AQUAREAD 10401-00618 Black Box Mk2 Instruction Manual
- June 1, 2024
- AQUAREAD
Table of Contents
10401-00618 Black Box Mk2
Product Information
Specifications
-
Product Name: BlackBox™ Mk2 Multiparameter Water Quality Data
Converter -
Software Revision: 4.00 and above
-
Manufacturer: Aquaread Ltd
-
Address: Bridge House Northdown Industrial Park, Broadstairs
Kent CT10 3JP ENGLAND -
Phone: +44 1843 600 030
-
Website: www.aquaread.com
Product Usage Instructions
1. Software License Agreement
By using the BlackBox, its associated probes, and meter, you
agree to be bound by the terms and conditions of the software
license agreement provided by Aquaread Ltd. Ensure to read and
understand the agreement carefully before using the product.
2. Recycling
It is important to recycle electronic equipment responsibly. If
you need to dispose of the product, contact Aquaread Ltd for
instructions on how to return the end-of-life equipment for proper
recycling.
3. Safety Warning
Although the equipment provides indications about water quality,
it does not guarantee that water is safe for human or animal
consumption. Always treat suspect water before consumption to avoid
potential health risks.
4. Trademarks
The product is protected under trademarks owned by Aquaread Ltd.
Any unauthorized use of the trademarks is strictly prohibited.
FAQ (Frequently Asked Questions)
Q: Can the BlackBox detect harmful bacteria or toxins in
water?
A: No, the BlackBox cannot detect harmful bacteria or toxins. It
provides indications about water quality but does not ensure water
safety for consumption.
Q: What should I do if I am unsure about the water
quality?
A: If you are unsure about water quality, always treat suspect
water before consumption to minimize health risks.
Instruction Manual
for the
BlackBoxTM Mk2
Multiparameter Water Quality
Data Converter
(Software revision 4.00 and above)
Revision: S
Date: October 13th 2023
Aquaread Ltd
Bridge House Northdown Industrial Park
Broadstairs Kent
CT10 3JP ENGLAND
Phone: +44 1843 600 030 www.aquaread.com
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
PROPRIETARY NOTICE
The information disclosed within this document or separately supplied in
furtherance of this document includes proprietary rights of Aquaread Ltd.
Neither this document nor the information disclosed herein or of a
supplementary nature shall be reproduced or transferred to other documents or
used for any other purposes, except as specifically authorised in writing by
Aquaread Ltd. Copyright 2023 Aquaread Ltd. All rights reserved.
SOFTWARE LICENCE AGREEMENT
By using the BlackBox, its associated probes and meter, you agree to be bound
by the terms and conditions of the following software licence agreement.
Please read this agreement carefully.
Aquaread Ltd grants you a limited license to use the software embedded in the
devices (the “Software”) in binary executable form in the normal operation of
the products. Title, ownership rights and intellectual property rights in and
to the Software remain in Aquaread Ltd.
You acknowledge that the Software is the property of Aquaread Ltd and is
protected under British copyright laws and international copyright treaties.
You further acknowledge that the structure, organisation and code of the
Software are valuable trade secrets of Aquaread Ltd.
You agree not to decompile, dissemble, modify, reverse assemble, reverse
engineer or reduce to human readable form the Software or any part thereof or
create any derivative works based on the Software.
RECYCLING
Any product bearing this symbol must be handed over to an applicable
collection point for the recycling of electrical and electronic equipment. By
ensuring this product is disposed of properly, you will prevent possible
adverse consequences for the environment which could be caused by
inappropriate waste handling. Note: For return for recycling, please contact
Aquaread Ltd for instructions on how to return end-of-life equipment,
accessories, and all auxiliary items for proper disposal.
WARNING
Favourable indications made by this equipment do not guarantee water is safe
for human or animal consumption. This equipment can not detect the presence of
harmful bacteria or toxins. If in doubt, ALWAYS TREAT SUSPECT WATER PRIOR TO
CONSUMPTION. In no event will Aquaread Ltd be liable for any incidental,
special, indirect or consequential damages, whether resulting from the use,
misuse, miscalibration or inability to use this equipment, or from defects in
the equipment.
TRADEMARKS
Aquaread®, Aquameter® and Aquaprobe® are all trademarks of Aquaread® Ltd.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 2 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
Table of Contents
1. INTRODUCTION…………………………………………………………………………………………………………………………………………5
1.1. WHAT DOES IT DO?…………………………………………………………………………………………………………………………………….5 1.2.
THE BLACKBOX AND THE ENVIRONMENT……………………………………………………………………………………………………….5
2. WIRING OVERVIEW………………………………………………………………………………………………………………………………….6
2.1. THE MULTICORE CORE CABLE……………………………………………………………………………………………………………………..6
2.2. SDI-12 / MODBUS SELECTION……………………………………………………………………………………………………………………..6
2.3. SLEEP MODE WHEN CONFIGURED FOR MODBUS
OUTPUT………………………………………………………………………………….6 2.4. SLEEP MODE WHEN CONFIGURED FOR
SDI-12 OUTPUT……………………………………………………………………………………7
3. APPLICATION WIRING DIAGRAMS…………………………………………………………………………………………………………8
3.1. SDI-12 DIGITAL INTERFACE (ALWAYS
ON)…………………………………………………………………………………………………….8 3.2. SDI-12 DIGITAL INTERFACE
(AUTO SLEEP)…………………………………………………………………………………………………….9 3.3. SDI-12 DIGITAL
INTERFACE WITH SELF POWERED TELEMETRY AND EXTERNAL POWER……………………………………….10
3.4. MODBUS MASTER DIGITAL
INTERFACE………………………………………………………………………………………………………..11 3.5. 4-20MA CURRENT
LOOPS………………………………………………………………………………………………………………………….12
4. INSTALLATION………………………………………………………………………………………………………………………………………..14
4.1. CALIBRATING THE AQUAPROBE…………………………………………………………………………………………………………………..14
4.2. CONNECTING THE AQUAPROBE……………………………………………………………………………………………………………………14
4.3. IMPORTANT INFORMATION REGARDING DEPTH
MEASUREMENT…………………………………………………………………………14 4.4. NORMAL
OPERATION………………………………………………………………………………………………………………………………..14 4.5. LED
INDICATIONS……………………………………………………………………………………………………………………………………15 4.6. IMPORTANT
NOTES CONCERNING AP-6000, AP-7000 AND AP-PRO SELF CLEANING…………………………………………….15
5. TROUBLESHOOTING……………………………………………………………………………………………………………………………….17
6. DECLARATIONS OF CONFORMITY……………………………………………………………………………………………………….18
6.1. CE DECLARATION …………………………………………………………………………………………………………………………………..18 6.2.
UKCA DECLARATION ……………………………………………………………………………………………………………………………..19
7. TECHNICAL SPECIFICATION…………………………………………………………………………………………………………………20
8. SDI-12 DATA COMMUNICATION PROTOCOL……………………………………………………………………………………….21
8.1. DATA PACKET FORMATS……………………………………………………………………………………………………………………………21
8.1.1. Acknowledge Active…………………………………………………………………………………………………………………………21
8.1.2. Address Query………………………………………………………………………………………………………………………………..21
8.1.3. Change Address………………………………………………………………………………………………………………………………22 8.1.4.
Send Identification…………………………………………………………………………………………………………………………..22 8.1.5.
Start Measurement………………………………………………………………………………………………………………………….22 8.1.6.
Additional Measurements…………………………………………………………………………………………………………………22 8.1.7.
Start Measurement and Request CRC………………………………………………………………………………………………..23
8.1.8. Additional Measurements and Request
CRC………………………………………………………………………………………23 8.1.9. Start Concurrent
Measurement…………………………………………………………………………………………………………23 8.1.10. Additional
Concurrent Measurements……………………………………………………………………………………………..23 8.1.11. Start
Concurrent Measurement and Request CRC……………………………………………………………………………..24
8.1.12. Additional Concurrent Measurements and Request
CRC……………………………………………………………………24 8.1.13. Start
Verification…………………………………………………………………………………………………………………………..24 8.1.14. Service
Request……………………………………………………………………………………………………………………………..24 8.1.15. Send
Data…………………………………………………………………………………………………………………………………….25 8.1.16. Continuous
Measurements……………………………………………………………………………………………………………..25 8.1.17. Continuous
Measurements and Request CRC……………………………………………………………………………………25
8.2. BLACKBOX ADDRESS……………………………………………………………………………………………………………………………….25 8.3.
UNIT IDENTIFICATION……………………………………………………………………………………………………………………………….26 8.4.
MEASUREMENT COMMANDS……………………………………………………………………………………………………………………….26
8.4.1. AP-100…………………………………………………………………………………………………………………………………………..28 8.4.2.
AP-100 with Depth………………………………………………………………………………………………………………………….30 8.4.3.
AP-200…………………………………………………………………………………………………………………………………………..31
© 2023 Aquaread Ltd.
www.aquaread.com
Page 3 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
8.4.4. AP-200 with Depth………………………………………………………………………………………………………………………….32
8.4.5. AP-300…………………………………………………………………………………………………………………………………………..33 8.4.6.
AP-300 with Depth………………………………………………………………………………………………………………………….35 8.4.7.
AP-400…………………………………………………………………………………………………………………………………………..37 8.4.8. AP-400
with Probe………………………………………………………………………………………………………………………….38 8.4.9.
AP-500…………………………………………………………………………………………………………………………………………..39 8.4.10. AP-500
with Probe………………………………………………………………………………………………………………………..41 8.4.11.
AP-600…………………………………………………………………………………………………………………………………………43 8.4.12. AP-600
with Depth………………………………………………………………………………………………………………………..45 8.4.13.
AP-700…………………………………………………………………………………………………………………………………………47 8.4.14. AP-700
with Depth………………………………………………………………………………………………………………………..49 8.4.15.
AP-800(software version 3.53 and below) and
AP-900………………………………………………………………………51 8.4.16. AP-800 with Depth (software
version 3.53 and below), AP-900 with Depth & AP-1000……………………….53 8.4.17.
AquaPlus Probe…………………………………………………………………………………………………………………………….55 8.4.18.
AP-2000 and AP-700/800 (software version 4.00 and
above)……………………………………………………………..57 8.4.19. AP-2000 with Depth and AP-700/800
with Depth (software version 4.00 and above)………………………….59 8.4.20. AP-
Lite………………………………………………………………………………………………………………………………………..61 8.4.21.
AP-5000……………………………………………………………………………………………………………………………………….62 8.4.22. AP-6000,
AP-7000 & AP-Pro…………………………………………………………………………………………………………64 8.5. VERIFICATION
COMMAND………………………………………………………………………………………………………………………….66 8.6. CYCLIC
REDUNDANCY CHECK…………………………………………………………………………………………………………………….66
9. MODBUS COMMUNICATION PROTOCOL……………………………………………………………………………………………..67
9.1. ELECTRICAL INTERFACE…………………………………………………………………………………………………………………………….67
9.2. DATA FRAME FORMAT………………………………………………………………………………………………………………………………67 9.3.
COMMUNICATION SEQUENCE & TIMING……………………………………………………………………………………………………….67 9.4.
DATA PACKET FORMAT…………………………………………………………………………………………………………………………….68
9.4.1. Exception Responses……………………………………………………………………………………………………………………….68
9.4.2. Read Holding Registers……………………………………………………………………………………………………………………69
9.4.3. Read Input Registers……………………………………………………………………………………………………………………….69
9.4.4. Write Holding Register…………………………………………………………………………………………………………………….70
9.4.5. Write Holding Registers…………………………………………………………………………………………………………………..70
9.4.6. Report Slave ID………………………………………………………………………………………………………………………………71 9.5.
REGISTER MAP………………………………………………………………………………………………………………………………………..72 9.5.1.
Input Registers………………………………………………………………………………………………………………………………..73 9.5.2.
Slave Address…………………………………………………………………………………………………………………………………75 9.5.3. Serial
Communication Speed……………………………………………………………………………………………………………75 9.5.4. Serial
Communication Parity……………………………………………………………………………………………………………75 9.6. CYCLIC
REDUNDANCY CHECK…………………………………………………………………………………………………………………….76
© 2023 Aquaread Ltd.
www.aquaread.com
Page 4 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
1. Introduction This manual covers the setup, operation and maintenance of
the Aquaread BlackBox Mk2 at software revision 4.00 and above. If you are
installing an original BlackBox running software version 3 or less, revision P
of this manual should be requested directly from Aquaread. This manual should
be read in conjunction with the latest revision of the relevant Aquaread
Aquaprobe Instruction Manual.
1.1. What does it do? The Aquaread BlackBox is a data converter that allows
any model of Aquaread water quality probe (Aquaprobe) to be interfaced
directly to a third party processing, control or logging device. The distance
`A’ between the BlackBox and the Aquaprobe can be up to 100 meters.
With a choice of industry standard digital interfaces and two analogue
channels, the BlackBox offers a versatile and cost effective data collection
solution utilising any of the advanced range of Aquaread multiparameter
Aquaprobes.
The BlackBox features an integral barometric pressure sensor for automatic
depth and DO correction and can output up to thirty-three water parameters
plus barometric pressure on an SDI-12 or Modbus (RS485) Digital Interface. In
addition, there is an option (to special order only) for any two parameters to
be output on two independent 4 – 20mA analogue channels. Data is refreshed
every two seconds.
Low current consumption and a rugged aluminium case make the BlackBox
particularly suitable for long term unattended deployment.
For applications where water quality data needs to be collected remotely, the
BlackBox is again the answer. In this configuration, logging device is
replaced by a third party telemetry device that can transmit data to a remote
monitoring station anywhere in the world.
1.2. The BlackBox and the Environment The BlackBox is designed to be used
outdoors and is rated to IP67, that is to say it is waterproof but it is not
designed for submersion. Depth and Dissolved Oxygen measurements rely on the
ability of the BlackBox to read atmospheric pressure. If the unit is
submerged, the depth measurement feature will not work and the Dissolved
Oxygen readings will be erroneous.
Please note that the socket on the BlackBox is only waterproof when the
associated Aquaprobe plug is fitted. Without the plug fitted, water can enter
the socket. Damage caused to the socket by water ingress is not covered by
your warranty.
You may notice a small hole on the side of the unit. This is a waterproof vent
for the internal barometric sensor. Do not poke anything in this hole! Doing
so will cause major damage to the vent’s waterproof membrane and invalidate
your warranty.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 5 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
2. Wiring Overview
The BlackBox is supplied with a screened multicore cable for connection to a
variety of third party controller devices. This 6 core cable provides power in
to the BlackBox and serial data out. If you have chosen to order a unit with
the optional analogue channels, the BlackBox will be supplied with a 10 core
cable.
Any cable cores that are not being used MUST be trimmed back and insulated from oneanother, the power supply and ground. The screen (or shield) of the cable should be connected to chassis ground at the controller.
2.1. The Multicore Core Cable
The table below gives an overview of the cable core designations for the six
/ten-core power/data cable. If you have not requested activation of the
analogue channels, your BlackBox will be fitted with a six core cable. Please
refer to the individual application wiring diagrams in the next section before
making any connections.
Core Colour Red Black Blue Green White Yellow Brown Violet Orange Pink
Six / Ten Core Cable
Designation
Function
Power supply +ve
8V 18V DC +ve power supply input
Power supply ve
Power supply ground
RS485 – / SDI-12
RS485 (B) (Modbus) or SDI-12 I/O
RS485 +
RS485 + (A) (Modbus) I/O
Run/Sleep line
Power control line
SDI-12 / Modbus
SDI-12 / Modbus select line
4 – 20mA Loop 1
Optional Analogue current loop 1 supply
4 – 20mA Loop 1
Optional Analogue current loop 1 return
4 – 20mA Loop 2
Optional Analogue current loop 2 supply
4 – 20mA Loop 2
Optional Analogue current loop 2 return
2.2. SDI-12 / Modbus Selection
The yellow core is used to select between SDI-12 or Modbus (RS485) serial data
communications. Tying the yellow core to the +ve power supply will configure
the digital output as Modbus (RS485). Tying the yellow core to ground will
configure the digital output as SDI-12. Please note: the yellow core must not
be left floating.
2.3. Sleep Mode When Configured for Modbus Output
The white core can be used to put the BlackBox into a low power sleep mode. If
the white core is taken to a voltage above 6V, the BlackBox will run
continuously and readings will be refreshed every 2 seconds. If the white core
is taken to ground, the BlackBox will enter sleep mode.
When the white core is subsequently taken above 6V, the BlackBox will wake-up and reenter normal running mode but the data outputs will not be stable and valid for 40 seconds.
If an AP-6000, AP-7000 or AP-Pro is connected, the data outputs will not be stable and valid until 60 seconds after wake-up. In addition, these models all include a self cleaning system. The BlackBox MUST be either put to sleep or powered off between readings in order for the self cleaning system counter to function. See section See section 4.6. Important notes concerning AP-6000, AP-7000 and AP-Pro self cleaning.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 6 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
2.4. Sleep Mode When Configured for SDI-12 Output
When configured for SDI-12 output, sleep mode can be configured to work
automatically. If the white core is tied permanently to ground, the BlackBox
will stay in sleep mode unless woken up by a measurement request’ on the SDI-12 line. As soon as the data is ready to be sent (usually after 40 – 60 seconds), the BlackBox will issue aservice request’ to the controller. Once
the controller has read the data, the BlackBox will automatically re-enter
sleep mode.
If an AP-6000, AP-7000 or AP-Pro is connected, the unit MUST be either wired for automatic sleep mode or powered off between readings in order for the self cleaning system counter to function. See section See section 4.6. Important notes concerning AP6000, AP-7000 and AP-Pro self cleaning.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 7 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
3. Application Wiring Diagrams
3.1. SDI-12 Digital Interface (always on) In this configuration, the BlackBox
is permanently on and SDI-12 data is instantly available on request. See
section 8. for details of the SDI-12 data communication protocol.
If an AP-6000, AP-7000 or AP-Pro is connected, this configuration is not
recommended. See section 4.6. Important notes concerning AP-6000, AP-7000 and
AP-Pro self cleaning. for more details.
Core Colour Red Black Blue Green White Yellow Screen
Six Core Cable Usage
Designation
Connection
Power supply +ve 10V 14V DC +ve power supply input
Power supply ve Power supply ground
SDI-12
Controller SDI-12 I/O line
RS485 +
Must be isolated and left floating
Run/Sleep line
+ve power supply input
SDI-12 / Modbus Power supply ground
Screen / Shield
Power supply or chassis ground
In this configuration, power should be left on the BlackBox continuously.
If the controller has a switched output to control external devices, this can be connected to the white core (run/sleep line) and can be pulled to ground to put the BlackBox into sleep mode if power saving is required.
Please note: the white core must not be left floating.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 8 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
3.2. SDI-12 Digital Interface (auto sleep) In this configuration, the BlackBox
is usually in power saving (sleep) mode. Requests for data on the SDI-12 bus
will wake the BlackBox up and there will be a delay of up to 40 seconds before
data is ready.
If an AP-6000, AP-7000 or AP-Pro is connected, a self clean command may be
sent to the Probe after it is woken up. If so, this will add a further 20
seconds to the time taken for the readings to stabilise.
If an AP-6000, AP-7000 or AP-Pro is connected, see section 4.6. Important
notes concerning AP-6000, AP-7000 and AP-Pro self cleaning.
As soon as the data is ready to be sent, the BlackBox will issue a `service
request’ to the controller. Once the controller has read the data, the
BlackBox will automatically re-enter sleep mode. See section 8 for details of
the SDI-12 data communication protocol.
Core Colour Red Black Blue Green White Yellow Screen
Six Core Cable Usage
Designation
Connection
Power supply +ve 10V 14V DC +ve power supply input
Power supply ve Power supply ground
SDI-12
Controller SDI-12 I/O line
RS485 +
Must be isolated and left floating
Run/Sleep line
Power supply ground
SDI-12 / Modbus Power supply ground
Screen / Shield
Power supply or chassis ground
© 2023 Aquaread Ltd.
www.aquaread.com
Page 9 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
3.3. SDI-12 Digital Interface with Self Powered Telemetry and External Power
In this configuration, the telemetry or logging device connected to the
BlackBox is self powered from internal batteries but the BlackBox and
Aquaprobe are powered from an external battery, which can have a solar panel
attached if required in order to maintain charge.
The BlackBox is usually in power saving (sleep) mode. Requests for data on the SDI-12 bus will wake the BlackBox up and there will be a delay of up to 40 seconds (60 seconds for an AP-6000, AP-7000 or AP-Pro) before data is ready. During this time power will be drawn from the external battery. After the reading, the BlackBox will re-enter sleep mode.
Core Colour Red Black Blue Green White Yellow Screen
Designation Power supply +ve Power supply ve SDI-12 RS485 + Run/Sleep line SDI-12 / Modbus Screen / Shield
Connection 10V 14V DC +ve power supply input Power supply ground Controller SDI-12 I/O line Must be isolated and left floating Power supply ground Power supply ground Power supply or chassis ground
If the optional solar panel is to be used, the 12V battery should be sized at ~6Ah. If the solar panel is not going to be included, a larger 12V battery (such as a car or caravan battery) will be required, dependant upon the sampling rate and the proposed re-charge interval.
If an AP-6000, AP-7000 or AP-Pro is connected, see section 4.6. Important notes concerning AP-6000, AP-7000 and AP-Pro self cleaning.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 10 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
3.4. Modbus Master Digital Interface In this configuration, the BlackBox is
permanently on and Modbus data is instantly available on request. See section
9. for details of the Modbus data communication protocol.
If an AP-6000, AP-7000 or AP-Pro is connected, see section4.6. Important notes
concerning AP-6000, AP-7000 and AP-Pro self cleaning.
Core Colour Red Black Blue Green White Yellow Screen
Six Core Cable Usage
Designation
Connection
Power supply +ve 10V 14V DC +ve power supply input
Power supply ve Power supply ground
RS485 (-/B)
Controller RS485 (- or B) line
RS485 (+/A)
Controller RS485 (+ or A) line
Run/Sleep line
+ve power supply input
SDI-12 / Modbus +ve power supply input
Screen / Shield
Power supply or chassis ground
If the controller has a switched output to control external devices, this can be connected to the white core (run/sleep line) and can be pulled to ground to put the BlackBox into sleep mode if power saving is required.
If the BlackBox is put into sleep mode, then the white core is subsequently taken above 6V, the BlackBox will re-enter normal running mode but the data will not be stable and valid for 40 seconds. If an AP-6000, AP-7000 or AP-Pro is connected, the data outputs will not be stable and valid for up to 60 seconds after leaving sleep mode.
If an AP-6000, AP-7000 or AP-Pro is connected, see section 4.6. Important notes concerning AP-6000, AP-7000 and AP-Pro self cleaning.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 11 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
3.5. 4-20mA Current Loops
The two optional 4-20mA current loops are available to special order and are
factory programmable only. The required outputs from the two current loops
should have been specified at the time of ordering. If this was done, your
BlackBox will have been supplied with a ten core cable and the analogue
outputs will conform to your requested parameters and ranges.
In the configuration shown above, the BlackBox is permanently on and the current loops are permanently active. SDI-12 digital operation is also selected (yellow core).
Core Colour Red Black Blue Green White Yellow Brown Violet Orange Pink
Ten Core Cable Usage
Designation
Function
Power supply +ve
10V 14V DC +ve power supply input (see note 2)
Power supply ve
Power supply ground
RS485 – / SDI-12
RS485 (B) (Modbus) or SDI-12 I/O
RS485 +
RS485 + (A) (Modbus) I/O
Run/Sleep line
Power control line (see note 3)
SDI-12 / Modbus
SDI-12 / Modbus select line (see previous sections)
4 – 20mA Loop 1
Analogue current loop 1 supply (see note 1)
4 – 20mA Loop 1
Analogue current loop 1 return (see note 1)
4 – 20mA Loop 2
Analogue current loop 2 supply (see note 1)
4 – 20mA Loop 2
Analogue current loop 2 return (see note 1)
© 2023 Aquaread Ltd.
www.aquaread.com
Page 12 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
Note 1: The two 4-20mA current loop outputs are completely isolated from each other and from the rest of the BlackBox circuitry. Whilst the cores assigned to the two current loops are designated as supply and return respectively, they are, in fact, bi-polar and can be connected either way round.
Note 2: the BlackBox must have its normal power supply connected and the run/sleep line (white core) taken high in order for the current loop outputs to work. The current loop outputs operate independently from the digital output which can be used simultaneously if required.
If the controller has a switched output to control external devices, this can be connected to the white core (run/sleep line) and can be pulled to ground to put the BlackBox into sleep mode if power saving is required.
If the BlackBox is put into sleep mode, then the white core is subsequently taken above 6V, the BlackBox will re-enter normal running mode but the 4-20mA loops will not be stable and valid for 40 seconds.
If an AP-6000, AP-7000 or AP-Pro is connected, the 4-20mA loops will not be stable and valid for 60 seconds after leaving sleep mode.
If an AP-6000, AP-7000 or AP-Pro is connected, see section 4.6. Important notes concerning AP-6000, AP-7000 and AP-Pro self cleaning.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 13 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
4. Installation The BlackBox features an aluminium flange with four 5mm
(3/16″) mounting holes. The unit should be fixed using these mounting holes in
a sheltered position where it can not become submerged in water.
4.1. Calibrating the Aquaprobe Prior to use, the selected Aquaprobe should be
fully calibrated using an Aquaread Aquameter or an AP-PC Kit and a set of
calibration standards. See the latest revision of the relevant Aquaprobe
Instruction Manual for calibration procedures.
4.2. Connecting the Aquaprobe With the power switched off, the selected
Aquaprobe should be plugged into the socket on the BlackBox. When the power is
switched on, the bi-colour LED should light continuously in yellow for two
seconds to indicate the probe has been successfully recognised and
initialised. If the LED flashes red, this means there is a problem. Refer to
section 4.5. LED Indications for more information.
4.3. Important Information Regarding Depth Measurement Depth is measured in
the Aquaprobe by a pressure sensor mounted inside the body of the probe. The
depth measurement reference point on the Aquaprobe is the top row of holes in
the sleeve. Depth is calculated by subtracting the barometric pressure being
measured in the BlackBox from the water pressure being measured by the
Aquaprobe. The pressure differential, once corrected for temperature and
salinity (water density), is directly proportional to depth.
The depth measurement system uses the EC sensor to detect when the probe has
been placed in water. All the time the probe is measuring an EC of zero, the
depth will read zero and the depth zero datum will be kept updated.
For this reason, it is important to ensure the Aquaprobe is connected to the
BlackBox, power is applied and the BlackBox has been awake and has taken
readings (LED flashing yellow) before the Aquaprobe is lowered into the water.
Once a depth datum has been established, it will remain in the BlackBox memory
even if the power is cycled and will not be refreshed or overwritten until the
probe is once again measuring an EC of zero
4.4. Normal Operation Directly after the application of power, the BlackBox
will light the bi-colour LED yellow for two seconds then proceed to take
readings at two-second intervals. Each time a reading is taken, the LED will
give a single, short yellow flash. Each time the BlackBox communicates with
the controlling device, the LED on the BlackBox will light up yellow for ½ a
second.
So, during normal operation, you should see the LED give a brief yellow flash
every two seconds and a longer yellow flash periodically, depending on the
sample rate set up in the controller.
If the BlackBox is configured in `auto sleep’ mode, readings will be taken for
40 seconds from power-up before the unit enters sleep mode. During this
initial power-up period, the Aquaprobe should be out of the water in order to
establish the depth zero datum.
When in sleep mode, the LED will not flash.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 14 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
4.5. LED Indications
The BlackBox has a single, bi-colour LED positioned next to the probe socket.
This LED is used to indicate the status of the BlackBox by flashing at various
rates in either red or yellow. The chart below shows the possible combinations
and what they mean.
Sequence Short yellow flash every 2 seconds
Long yellow flash
Single red flash every two seconds Two short red flashes every 2 seconds Three
short red flashes every 2 seconds
What it means The BlackBox has just communicated with the Aquaprobe. The BlackBox has just communicated with the controller device.
Action Normal operation. No action required Normal operation. No action required
BlackBox can not read the Aquaprobe. See Troubleshooting below
The Aquaprobe’s pH electrode requires See Troubleshooting below and the
servicing or calibration.
Aquaprobe manual.
The Aquaprobe’s optical DO electrode See Troubleshooting below and the
requires servicing or calibration
Aquaprobe manual.
If a probe error condition occurs, the short yellow flash that indicates probe communication will be replaced by one of the three red flashing sequences.
4.6. Important notes concerning AP-6000, AP-7000 and AP-Pro self cleaning The
SDI-12 and MODBUS protocols do not have provision for activating the
Aquaprobe’s self cleaning mechanism.
The BlackBox Mk2 features a small, rotary, ten position switch, which allows
the installer to select the cleaning frequency.
To access the switch, remove the rubber bung from the top of the BlackBox and
carefully adjust the switch position using a terminal screwdriver. See the
cleaning table on the next page.
The BlackBox software includes a cleaning counter, which is incremented each
time the BlackBox is woken from sleep mode or the power supply to the BlackBox
is cycled.
If the BlackBox is being used in SDI-12 mode, it should be wired for Auto
Sleep mode. See section 3.2. SDI-12 Digital Interface (auto sleep). Each time
the logging device wakes the BlackBox from sleep mode by sending a reading
request, the cleaning counter will be incremented.
If the BlackBox is being used in MODBUS mode, it should be put to sleep
between readings by pulling the run/sleep line (white wire) low. Each time a
reading is required, the run/sleep line should be taken high and at this point
the cleaning counter will be incremented. If the run/sleep line is not toggled
between readings, the cleaning counter will not be incremented and the Probe
will not be cleaned.
In either mode, if the run/sleep line is tied permanently high, the only time
the clean counter will only be incremented is when the power supply to the
BlackBox is cycled.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 15 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
The rotary switch can be set to implement a cleaning cycle (wipe) after a prescribed number of counts (samples) as indicated in the table below.
Switch Position 0 1 2 3 4 5 6 7 8 9
Samples / Wipe 1 2 4 8 12 16 20 50
100 250
For example: If the switch is set to position 0, the cleaning system will be activated each time the BlackBox is woken from sleep or the power is cycled. If the switch is set to position 2, the cleaning system will be activated every fourth time the BlackBox is woken from sleep or the power is cycled, and so on.
So, if the sample interval is 15 minutes and the switch is set to position 4 (12 samples/wipe), the Probe will be wiped every three hours (12 x 15mins = 180mins).
The cleaning frequency should be set based on the conditions at the deployment site. If heavy soiling or algal growth is expected, clean every hour. If the deployment site is fresh clear water, cleaning once or twice a day should be sufficient.
Do not set the cleaning frequency higher than is necessary for the conditions as this will lead to unnecessary wear and tear on the cleaning system and Aquaprobe’s electrodes.
PLEASE REMEMBER: If you do not put the BlackBox to sleep or cycle the power between readings, the cleaning counter will not be incremented and the Aquaprobe will not be cleaned.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 16 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
5. TROUBLESHOOTING
This section details some of the common difficulties you may encounter when
using the BlackBox. Try all the suggested remedies. If your problem is still
unresolved, contact our Service Department.
Problem
Cause / Remedy
The unit may be in auto-sleep mode.
The BlackBox LED does not flash at all.
Power supply problem. Check all connections. The white power control wire may be grounded causing the unit to be permanently asleep.
The internal fuse may be blown. Remove lid and check fuse.
The BlackBox LED gives Probably a poor connection. Disconnect the Aquaprobe plug,
a single red flash even
ensure there is no debris or moisture in the plug and socket,
when the Aquaprobe is
then re-connect the plug ensuring it is fully inserted and that
connected.
the screw collar is fully tightened.
This means the pH electrode fitted to the probe has dropped
The BlackBox LED gives below 85% efficiency. Try cleaning the pH electrode and re-
a double red flash every calibrating as described in the relevant section of the
two seconds.
Aquaprobe manual. If that does not cure the problem, replace
the pH/ORP electrode.
This means the Optical DO electrode on the Aquaprobe
The BlackBox LED gives needs calibrating or the cap needs replacing. Perform a full
a triple red flash every
DO calibration, first at DO Zero then at 100% DO as
two seconds.
described in the relevant section of the Aquaprobe manual. If
that does not cure the problem, replace the Optical DO Cap.
The BlackBox is not being put to sleep or having the power
The Aquaprobe’s self
cycled between readings.
cleaning mechanism is The cleaning switch is set to too high a value.
not being activated
Refer to section 4.6. Important notes concerning AP-6000,
AP-7000 and AP-Pro self cleaning.
No output on the 4-20mA
current loops.
Current loops do not become live until 40 seconds after power on or wake-up. BlackBox not reading the Aquaprobe. Check LED indications.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 17 of 76
Aquaread BlackBoxTM Instruction Manual 6. DECLARATIONS OF CONFORMITY 6.1. CE Declaration
10401-00618 Rev S
© 2023 Aquaread Ltd.
www.aquaread.com
Page 18 of 76
Aquaread BlackBoxTM Instruction Manual 6.2. UKCA Declaration
10401-00618 Rev S
© 2023 Aquaread Ltd.
www.aquaread.com
Page 19 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
7. Technical Specification
Input Voltage
8V 18V DC.
Operating Temperature -5ºC 50ºC
~ 100mA (AP-Lite / AquaPlus / AP-700 – AP-2000 attached)
Input Current*
~ 130mA (AP-5000 or AP-6000, AP-7000 or AP-Pro attached)
(awake)
~ 330mA (AP-6000, AP-7000 or AP-Pro during self cleaning
cycle)
Input Current (asleep)
< 500µA
Protection Class
IP67 (must not be submerged due to barometric pressure sensor)
Dimensions
140mm x 65mm x 30mm (5.5″ x 2.6″ x 1.2″)
Weight
280g (10oz)
Connections
Probe socket & 1M screened power/data cable
Fixing
Aluminium flange with four 5mm (3/16″) mounting holes
Digital Interface
User selectable between SDI-12 and Modbus (RS485)
Update rate
All data is refreshed every 2 seconds when not in sleep mode
Current Loop Accuracy +/-0.2mA (represents +/-1.25% of FS digital value)
*Input currents are shown as approximate because current consumption varies with the number and type of optional electrodes fitted to the Aquaprobe.
Aquaread reserves the right to alter specifications without notice.
© 2023 Aquaread Ltd.
www.aquaread.com
Page 20 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
8. SDI-12 Data Communication Protocol SDI-12 is a standard for interfacing
data recorders with microprocessor-based sensors. SDI-12 stands for
serial/digital interface at 1200 baud. This section describes the protocol for
communications between the BlackBox and SDI-12 data recorders complying with
Version 1.3 of the SDI-12 standard.
8.1. Data Packet Formats The BlackBox responds to commands sent to it by an
SDI-12 data recorder. Command packets should have the format:
where: is the BlackBox address character (valid values are ASCII “0”-“9”,
“A”-“Z”, “a”-“z” & “?”)
Response packets have the format:
where: is the BlackBox’s address character
8.1.1. Acknowledge Active
This command allows the data recorder to check that the BlackBox is present on
the SDI12 bus.
Command Response
8.1.2. Address Query
This command allows the data recorder to obtain a sensor’s address character.
It must only be issued when there is just one sensor attached to the bus,
otherwise all sensors will respond, causing bus contention.
Command Response
?!
© 2023 Aquaread Ltd.
www.aquaread.com
Page 21 of 76
Aquaread BlackBoxTM Instruction Manual
10401-00618 Rev S
8.1.3. Change Address This command allows the data recorder to assign a new address to the BlackBox.
Command Response A!
is a new address to be assigned to the unit (1 character, value “0”-“9”,
“A”-“Z” or “a”-“z”)
8.1.4. Send Identification This command allows the data recorder to retrieve
some basic information about the BlackBox and the Aquaprobe attached to it.
Command Response
8.1.5. Start Measurement This command tells the BlackBox to start making a measurement.
Command M!
8.1.6. Additional Measurements This command tells the BlackBox to start making a measurement.
Command M