Aqua Scope HEALWE02 Warm Water Heating Monitor Instruction Manual

: June 16, 2024
: Aqua-Scope

Table of Contents

Aqua Scope HEALWE02 Warm Water Heating Monitor
Specifications
Product Description
Battery Operation
Technical Data
Support and Contact
FAQ
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Aqua Scope HEALWE02 Warm Water Heating Monitor

Specifications

Product Name: LoRaWAN Warm Water Heating Monitor (HEALWE02)
SKU: HEALWE02
Version: 2.0.0

Product Description

The Aqua-Scope monitor for hot water heating systems records the temperature and pressure of the water in the heating circuit. of the water in the heating circuit. It can be installed either in the flow or in the return.

The device consists of two parts

Main housing for signal processing and radio communication with battery compartment.
The external sensor head is connected to the water pipe. The stainless steel sensor head has a silicon sensor mounted in silicone oil for highly accurate and low-noise pressure measurements in a wide operating range. The measuring range for pressure is between 1 and 10 bar. The sensor values are converted into digital values directly in the measuring head to suppress interference from the connection to the main housing. In addition, the temperature of the liquid medium is measured directly at the stainless steel diaphragm and is therefore very precise.

The sensor can send an alarm message if freely definable threshold values are exceeded or not reached. The sensor’s polling frequency can be set between 0.1 seconds and several minutes and defines the battery life. For a measuring interval of 1 second, a battery life of approx. 10 years is calculated. The device communicates via LoRaWAN as a Class A device and can also be operated as a Class C device via configuration parameters

The device is powered either via an external power supply with a USB-C power supply unit or via an optional internal ER26500 battery (Bobbin Cell C).
Both the sensor head (IP67) and the main housing (IP65) are waterproof and can be used outdoors or in particularly humid and/or dirty environments.

Installation
The sensor head is screwed into 1/4 inch inspection openings of the existing warm water pipe system.

Reset to Factory Default State
The factory default state is indicated by the LEDs blinking green/red. Please push the button after the initial buzzer beep (but not earlier!) and keep it pushed for 5 seconds. After 5 seconds you hear a low-frequency sound. Now release the button! This reset sequence will delete all settings including network access credentials

Pairing with the LoRaWAN Network
Please register the device with its three keys with your LoRaWAN server before commissioning. You will find the Device EUI printed on the device. Enter this key plus your registered email address on https://aqua- scope.com/lora to obtain the missing keys. The email address is the account email from Aqua-Scope Shop purchases or the data is provided by your Point of Sale

Functions and Usage

Every 15 minutes (when mains powered) or every hour (when battery operated) the device reports the following sensor values:

The pressure of the water,
Temperature of the water right at the sensor head.

The sensor values can be accessed in the Aqua-Scope App or they are reported into the network when integrated into third party systems. The device offers a low watermark and a high watermark threshold that can be defined using the mobile app. If the valued are exceeded an under-pressure or overpressure alarm is issued.

Besides the water-related alarms, the device also reports certain device- related conditions as alarms:

No external sensor head connected
Head present but no contact to water
Battery Low
Mains Power lost
Bad communication network quality

All these alarm conditions are monitored continuously. Alarms are indicated on the device with red LED and buzzer sound (both can be disabled in the app) and they are reported into the Aqua-Scope Cloud and shown in the Aqua-Scop App. If the alarm condition disappears the alarm is reversed but will remain in green color in the app for information. Swiping them in the app’s home page finally deleted them. Further alarm reactions such as email, push notification or even a voice call can be defined in the AquaScope App.

LoRaWAN Payload Commands (Payload Format)
LoRaWAN commands can be daisy chained into the payload up to the defined maximum payload size of 51 bytes. This means that all commands sent to a defined number of bytes in the payload is required to avoid misinterpretation of command and/or command values in the receiver side. All uplink and downlink commands use FPort=10.

Uplink Command Hardware Version Report: 0x03 – HW – CAP_MSB CAP_LSB (4 Byte): This command reports the hardware version and a bitmap of the capabilities of the device. It is sent unsolicited as the first command during boot-up and as a replying command to downlink command Hardware Version Get. HW is a single byte indicating the version of the hardware. The bitmap indicates the different capabilities of the device.
Uplink Command Configuration Report: 0x04 – IDX – VAL_MSB – VAL_LSB (4 Byte): This command reports a configuration parameter of the device: IDX is the number of the configuration parameter. The 16 Bit VAL is the parameter itself. Configuration parameters are always 16 Bit values. The table below describes the configuration parameters and their values.
Uplink Command Sensor Report: 0x06 – ID – VAL_MSB – VAL_LSB (4 Byte): This command reports sensor values. The ID indicates the sensor type and defines the format of the 16-Bit VAL. The sensor types of this devices are listed below.
Uplink Command Firmware Version Report: 0x0a – VER_MSB VER_2 VER_3 VER LSB (5 Byte): This command reports the 32-bit value of the current firmware. It is sent unsolicited as the first command during boot-up and as replying command to downlink command ‘Hardware Version Get’.
Uplink Command Alarm Report : 0x0b – STATE – TYPE – VAL_MSB – VAL_LSB (5 Byte): This command reports the start and end of alarms. The STATE-Byte indicates the status of the alarm (0x01 = active, 0x00 = inactive). The TYPE Byte indicates the type of alarm and defines the content of the 16-bit VAL. Possible alarm IDs and the values reported are listed below.
Uplink Command Battery Report: 0x12 – VOLT – BAT_MSB – BAT_LSB (4 Byte): This command reports the status of the battery. VOLT is the measured voltage of the battery in 100 mV steps, the BAT value is the consumption of the current battery – as counted inside the system – in mAh.
Downlink Command System Command: 0x01 – CMD (2 Byte): This command sends a system command to the devices. CMD defines the type of command:
CMD = 0x01 : System restart
CMD = 0x02: System Reset – back to factory default
Downlink Command Hardware Version Get : 0x03 – (1 Byte): This command calls for a Hardware Version Report sent upstream
Downlink Command Configuration Set: 0x04 – IDX – VAL_MSB – VAL_LSB (4 Byte): This command allows setting configuration parameters of the device: IDX is the number of the configuration parameter. The 16 Bit VAL is the parameter itself. Configuration parameters are always 16 16-bit values. The table below describes the configuration parameters and its values.
Downlink Command Sensor Get 0x06 – ID (2 Byte): This command requests the report of sensor values. The ID indicates the sensor type. The sensor types of the devices are listed below.
Downlink Command Alarm Clear: 0x0b – TYPE (2 Byte): This command clears an alarm. TYPE is the type of alarm to be cleared. Type = 0 clears all active alarms. For other types of alarms to be cleared please refer to the uplink command 0x0b.
Downlink Command Configuration Get 0x14 – IDX (2 Byte): This command allows reading the configuration value IDX. The device will respond with an upstream command ConfigurationReport

LoRaWAN Sensor Types
The following sensor types are supported by the Aqua-Scope Monitor.

0x01: Temperature: VAL is temperature in 1/10 Degree Celsius, (2-complement). Example: 0x06
0x01 0x00 0xCD = > Temperature: 0x00CD = 205 = 20.5 C., 0x06 0x01 0xFF 0xEA => Temperature 0xFFEA = -20 = -2 C
0x03: Uptime: VAL is the number of hours after the last boot
0x10: Water Pressure: VAL is the unsigned water pressure in mBar. Example: 0x10 0x011 0x0D 0x48 => Pressure 0x0D48 = 3400 = 3.4 Bar.

LoRaWAN Alarm Types
The following alarm types are supported by the Aqua-Scope Monitor.

1 (0x01): Flood Sensor Tripped. VAL is 0x01 or 0x00.
2 (0x02): Freeze/Frost Danger. VAL is actual temperature.
4 (0x04): Water Underpressure. VAL is actual water pressure.
6 (0x06): Water Overpressure. VAL is actual water pressure.
12 (0x0c): Battery Low. VAL is 0x01 or 0x00.
13 (0x0d): Lost Mains Power. VAL is 0x01 or 0x00.
14 (0x0e): Sensor Head not connected to main device. VAL is 0x01 or 0x00.
15 (0x0f): Sensor Head not in contact with water. VAL is 0x01 or 0x00.

LoRaWAN Configuration Parameters
All Configuration Parameters are 2 Byte values that can be set and read out using LoRaWAN ‘Configuration Get’ and ‘Configuration Set’ commands. Here is an overview of the configuration parameters currently used:

Parameter 1 (0x01): System Register (Default: 0x5bfe = dec 23550)
The bitmap defines the general behavior of the device. Bit = 1 means function enabled, bit = 0 means function disabled

0x0001 (Bit 00) : Main Processor in Sleep Mode
0x0002 (Bit 01) : LORAWAN communication
0x0004 (Bit 02) : Wifi communication
0x0008 (Bit 03) : Serial communication
0x0020 (Bit 05) : Buzzer active
0x0040 (Bit 06) : LED active
0x0400 (Bit 10) : n.n.
0x0800 (Bit 11) : high frequency (1) versus low frequency(0)
0x1000 (Bit 12) : base operation interval MSB
0x2000 (Bit 13) : base operation interval
0x4000 (Bit 14) : base operation interval
0x8000 (Bit 15) : base operation interval lsb

When a High-Frequency Bit is set to 1: 4 MSB defines an interval in 2 * ms from 2 -32 ms (val 1 – 16). When a High-Frequency Bit is set to 0: 4 MSB defines interval as 125 ms power of x, ranging from x = 1 = 125 ms to x = 14 = 2048 sec = 34 min, x=15 is not allowed.

Parameter 6 (0x06): Over-Pressure Alarm threshold (Default: 0x1f40 = dec 8000)
An overpressure alarm is sent as an uplink message when the current pressure exceeds this threshold. The threshold value is automatically set 24 hours after initial setup during calibration and may change from time to time as a result of ongoing calibration. The value is accepted in mBar.

Parameter 7 (0x07): Under-Pressure Alarm threshold (Default: 0x07d0 = dec 2000)
A heavy flow alarm is sent as an uplink message when the current pressure falls below this threshold for a certain time. The threshold value is automatically set 24 hours after initial setup during calibration and may change from time to time as a result of ongoing calibration. The value is accepted in mBar.

Parameter 19 (0x13): Alarm Enable/Disable (Default: 0xd806 = dec 55302)
The bitmap defines which alarm type is active and will cause an alarm status command 0x0b. Bit = 1 means the function is enabled, and bit = 0 disables the function. The different alarm types are shown in the section ‘LoRaWAN Alarm Types’.

Parameter 29 (0x1d): Reporting Interval (Default: 0x0384 = dec 900)
This parameter defines the interval in seconds the device automatically reports sensor values and heartbeat as an uplink message.

LED-Signals

All colors blinking: device boots up
Yellow blinking: Devices try to connect to the network
Red fast blinking (mains powered) or steady: Alarm green/red blinking: factory default
3 times green blinking plus buzzer: Device connected to network successfully and is ready to work
Blue glowing (mains powered) or all LEDs off (battery operated): The device is operating

Battery Operation

If the device is battery-operated all focus in on extending battery life. The battery life depends on several factors:

Presence of a Pressure Reduction Valve: If a PRV is present the device will draw significantly less power and the battery life extends at least by a factor of 2.
Interval of status reporting. In mains power mode the device will report its status every 20 seconds and receive commands from the app/Cloud. In battery mode, the device wakes up every hour only.
Hence, every command such as opening/closing of the valve or setting certain parameters will be executed with delay.
All status data such as the temperature of water, consumption, etc. are only reported once per hour (in mains every 15 minutes)
The stand-by animation of blue LED glowing is turned off in battery mode.

You find an estimation of the battery lifetime in the app under ‘Devices’. With PRV the battery will last about 8…10 years, without PRV the lifetime is about 4 years.

Scope of Delivery

Water Monitor main device (without battery)
Pressure sensor head with 80 cm cable
3/8 Inch water pipe connector (T-shaped)
One external flood sensor with cable
USB-C power cable and power supply
19 mm wrench to unfasten and fasten the 3/8 Inch connections of the pipe connector
Manual

Technical Data

Power Supply: External USB Power Plug 5 V/ 1A
Battery: Bobbin Cell C ER26500, Lithium-Thionyl Chloride
B ESP32-WROOM_32E (Xtensa Dual Core 32 Bit, 240 MHz, 520 KB RAM)

Wireless Connection
WIFI ESP Built-in 2.4 GHz 802.11 b/g/n, bitrate in ‘n’ mode up to 150Mbps

Lora: SX1261, EU868 MHz, SF 7-12, TX16 dBm, RX: – 147 dBm @ 300 bps, Class A
Pressure Sensor Head:
Range : 0 … 1000 kPa (10 bar)
Overload: 150 Percent of maximum pressure
Connection: G ¼ “ female
Communication: I2C
Precision:
Built-in High-Precision Temperature Sensor
Dimensions (Main): 91 mm x 91 mm x 30 mm
Weight (Main Device): 105 gr
Weight (Sensor Head): 140 gr
Protection: Main Device: IP 65, Sensor Head: IP 67
User Interface: 4 colored LED, single touchless button
Environmental Conditions:
Shipment and Storage: -65 °C … 125 °C
Operation: – 20 °C … 50 °C
Rel. Humidity: 0…90 %

Support and Contact

Should you encounter any problem, please allow us to address it before returning this product. Please check our website www.aqua-scope.com and particularly the support section for answers and help. You can also send a message to info@aqua-scope.com.

While the information in this manual has been compiled with great care, it may not be deemed an assurance of product characteristics. Aqua-Scope shall be liable only to the degree specified in the terms of sale and delivery. The reproduction and distribution of the documentation and software supplied with this product and the use of its contents is subject to written authorization from Aqua-Scope. We reserve the right to make any alterations that arise as a result of technical development.

Phone: +372 (0) 6248002
Email: info@aqua-scope.com
Web: www.aqua-scope.com

Declaration of Conformity
Aqua-Scope Technology OÜ, Sakala 7-2, 10141 Tallinn, Republic of Estonia, declares that this radio-emitting device works on the following frequencies:

Hereby, Aqua-Scope Technology OÜ declares that the radio equipment type HEALWE02 complies with Directive 2014/53/EU. The full text of the EU declaration of Conformity is available at the following internet address: www .aqua-scope.com/ce

Disposal Guidelines

Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities. Contact your local government for information regarding the collection systems available.
If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging health and well-being.

FAQ

How often does the device report sensor values?
The device reports sensor values every 15 minutes when mains powered or every hour when battery operated.

How do I reset the device to the factory default state?
To reset the device to the factory default state, push the button after the initial buzzer beep and keep it pushed for 5 seconds. After 5 seconds, you will hear a low-frequency sound. Release the button to complete the reset sequence.

How do I pair the device with the LoRaWAN network?

To pair the device with the LoRaWAN network, register the device with its three keys on your LoRaWAN server before commissioning. You can find the Device EUI printed on the device. Enter this key along with your registered email address at https://aqua-scope.com/lora to obtain the missing keys.