APERA INSTRUMENTS EC700 Benchtop Conductivity Meter Installation Guide
- June 3, 2024
- APERA INSTRUMENTS
Table of Contents
EC700 Benchtop Conductivity Meter
EC700 Benchtop Conductivity Meter Instruction Manual
APERA INSTRUMENTS (Europe) GmbH
www.aperainst.de
v2.0
Table of Contents
1 Brief Introduction ………………………………………………………………………………………………- 1 1.1 Main Features
………………………………………………………………………………………………………. – 1 –
2 Technical Specifications……………………………………………………………………………………….- 1 –
3 Instrument Description ……………………………………………………………………………………….- 2 3.1 LCD Display
………………………………………………………………………………………………………….. – 2 3.2 Keypad
……………………………………………………………………………………………………………….. – 3 3.3 Connectors
………………………………………………………………………………………………………….. – 4 3.4 Stable reading display
mode……………………………………………………………………………………. – 4 3.5 Data storage, recall, and
deletion …………………………………………………………………………….. – 4 3.6 Max/Min Function
………………………………………………………………………………………………… – 5 –
4 Conductivity Measurement………………………………………………………………………………….- 5 4.1
Preparation………………………………………………………………………………………………………….. – 5 4.2 Conductivity
Electrode Information ………………………………………………………………………….. – 5 4.3 Information
regarding Calibration…………………………………………………………………………….. – 5 4.4 Conductivity
Calibration (take 1413 S as an example) …………………………………………………. – 6 4.5 TDS and
Conductivity …………………………………………………………………………………………….. – 6 4.6 Sample
Test………………………………………………………………………………………………………….. – 7 4.7 Parameter Setting
…………………………………………………………………………………………………. – 8 4.8 Conductivity Electrode’s
Maintenance ………………………………………………………………………. – 9 –
5 Complete Kit…………………………………………………………………………………………………… – 10 –
6 Warranty ……………………………………………………………………………………………………….. – 10 –
1 Brief Introduction
Thank you for purchasing Apera Instruments EC700 Benchtop Conductivity Meter.
This instrument is an outstanding combination of advanced electronics desin
and sensor technology. It’s the most economical choice of a reliable lab
benchtop conductivity meter.
Please read this maual carefully to properly use and maintain the meter. Apera
Instruments reserves the right to update the contents of this manual without
giving prior notices.
1.1 Main Features
· The meter has a built-in microprocessor chip, which enables intelligent
functions such as automatic calibration, automatic temperature compensation,
data storage, parameter setup, max/min reading display, etc.
· The advanced automatic calibration mode has calibration guide and self-
diganosis functions, automatically recognizing standard calibration solutions.
· The advanced digital processing technology intelligently improves the
meter’s response time and measuring accuracy with stable reading display mode
available.
· The kit comes with a combination conductivity electrode with temperature
sensor, measuring conductivity and temperature simultaneously, and allows for
automatic temperature compensation.
· IP54 dustproof and spillproof. Connectors are protected by silicone seal
caps, effectively ensuring the reliability and service life of the meter under
harsh environment.
· Detachable electrode holder and 3 bottles of conductivity calibration
solutions come with the kit for convenient use.
2 Technical Specifications
Range
Resolution Conductivity Accuracy
Temperature Compensation Electrode Constant Reference Temperature Temperature
Compensation Coefficient Calibration
Conductivity: 0-200.0 mS/cm, divided into 4 ranges: (0-199.9) S/cm, (200-1999)
S/cm,
(2.00-19.99) mS/cm,(20.0-199.9) mS/cm TDS: (0-100) g/lL devided into 4 ranges:
(0-99.9) mg/L, (100-999) mg/L, (1.00-9.99) g/L, (10.0-100.0) g/L
Conductivity: 0.1/1 S/cm; 0.01/0.1 mS/cm TDS: 0.1/1 mg/L, 0.01/0.1 g/L
±1.0% F.S ±1 digit
0 to 50 °C (Auto or Manual)
0.1/1/10 cm-1
25 °C
0.00-9.99%/ °C, default value: 2.00%/ °C
1-4 point Auto Calibration – 1 –
Temp. Others
Range Resolution Accuracy Data Storage Storage Content Power IP Ratings Size and Dimension
0 to 100°C; 32 to 212°F 0.1°C; 0.1/1°F ±0.5°C ±1 digit 50 groups
Numberings, Measurement, Unit, Temperature, Temperature Compensation Status
DC9V/300mA
IP54 dustproof and spillproof (240235103) mm/1kg
3 Instrument Description 3.1 LCD Display
(1) — Measurement mode
Figure-1
(2) — Measurement value
(3) — Calibration icons and numberings
(4) — Measurement unit
(5) — Temperature unit
(6) — The unit displayed during calibration
(7) — The value displayed during calibration, numberings for storage and recall, and reminder icons
(8) — Icons for data storage and recall — M+: store measuring data; RM: Recall measuring data
(9) — Temperature and reminder icons
(10) — Self-Diagnosis icons and numberings (11) — Temperature compensation
mode icons — ATC: Auto Temperature Compensation;
MTC: Manual Temperature Compensation (12) — Completed calibration icons (13) —
Stable reading icon (14) — Icons for maximum and minimum values
– 2 –
3.2 Keypad
Figure-2 3.2.1. Keypad operations Short press —– <1.5 seconds; Long press —–
1.5 seconds.
3.2.2 For keypad operation, please see Table-1. Table 1 Keypad operations and descriptions
Keypad Operation
Functions
Short Press
Short Press Long Press
Power on/off Select measuring mode: CondTDS. Enter parameter settingP1P2…P6.
Short Press
Enter Calibration mode Cancel any operation and go back to measurement mode
Short Press
Short Press Long Press
Short Press or
Long Press
Short Press
In calibration mode, press to conduct calibration In parameter setting, press
to confirm selection
Store measuring data
Recall stored measuring data
1. In manual temperature compensation mode, short press to change
temperature, long press to change quickly
2. In parameter setting mode, short press to change parameter and settings.
3. In recall mode, short press to change numberings, long press to change
quickly.
4. Buttons for max/min values (refere to section 3.6)
– 3 –
3.3 Connectors
Symbol COND TEMP DC9V
Connector Name Socket for conductivity electrode
Socket for temperature sensor DC9V power socket
Connector Type BNC RCA
2.5 direct type
3.4 Stable reading display mode
When the measuring value is stable, smiley face icon
appears on LCD, see
Figure-3. Please do not get the reading value or make calibration until the
icon appears and stays.
3.5 Data storage, recall, and deletion 3.5.1 Storage
When the measurement is stable, press
key, the meter displays
M+ icon and storage numberings on LCD, and stores the measuring data.
In Figure-4, the meter stores the first group of the measuring data. Press
again to keep storing.
3.5.2 Recall stored data
In the measurement mode, long press
key to recall the last stored
Measuring data. The meter displays RM icon and storage numberings.
In Figure-5, the meter is recalling the 28th stored measuring data.
Keep pressing
and
to recall successively the stored
measuring data. Press and hold
and to quickly recall the stored
measuring data. Short press
to go back to measurement mode.
3.5.3 Clear stored data
The meter can store 50 groups of data. Once the storage is full, if user
presses
again, the FUL icon will be displayed on LCD (see Figure-6).
The storage needs to be cleared in parameter setting P4 so as to keep storing
– 4 –
Figure – 3 Figure – 4 Figure – 5 Figure – 6
data. The numberings in M+ indicates the total number of stored data; The numberings in RM indicates the number of stored data in current mode (cond/TDS). For example, if 20 groups of data is stored in conductivity mode, and 10 groups in TDS mode, then the numberings for M+ will be “M+30” in both conductivity and TDS mode; the numberings for RM in conductivity mode would be “RM20”, in TDS mode “RM10”.
3.6 Max/Min Function
Use this function to display the maximum or minimum records out of groups of measuring data. In
measurement mode, press
, LCD will display flashing icons of “MAX/MIN”, indicating the meter has
entered the mode of recording maximum and minimum data. After testing, press
again, LCD will
alternately display the maximum and minimum value in the past measurements. Press
to go back to
regular measurement mode.
4 Conductivity Measurement
4.1 Preparation 4.1.1 Install the electrode holder
The electrode holder is comosed of a metal stand base, a supporting pole, and
a electrode clip. First, install the metal stand base to the meter (screw it
on). Please note that the metal base can be installed on either side of the
meter. Then install the supporting pole on the metal stand base, and then
install the electrode clip on the supporting pole.
4.1.2 Connect the power adapter
Plug the power adapter tightly into the DC9V socket. The power’s voltage
should meet the requirements listed on the power adapter.
4.2 Conductivity Electrode Information 4.2.1 Conductivity Electrode
The meter comes with the 2301T-F combination conductivity electrode (K=1.0)
with built-in temperature sensor, which enables the automatic temperature
compensation. The electrode’s housing adopts polycarbonate materials, which is
resistant to shocks and corrosion.
4.2.2 Electrode Connectors
The conductivity electrode has two connectors: the BNC connector connects the
conductivity sensor, the RCA connector connects the temperature sensor. Plug
these two connectors into `COND” and “TEMP” sockets. Please note do not pull
the cables in case of poor contact. Please keep the connectors clean and dry.
Refer to section 4.8 regarding how to properly maintain the Conductivity
electrode.
4.2.3 Use the Electrode
Stir the electrode for a few seconds after it’s dipped into the solution and
then let it stand still such that the bubbles inside the probe can be removed
and a stable measurement can be quickly obtained.
4.3 Information regarding Calibration 4.3.1 Conductivity standard solutions
The meter automatically recognizes calibration solutions. 1 point or multi-
points calibration (up to 4 points) can – 5 –
be adopted. The calibration icons stand for 4 different calibration points (
solutions), see Table-2:
Table-2
stands for two standard
Calibration icon
pH standard buffer series
4-Point calibration
84 S/cm 1413 S/cm 12.88 mS/cm 111.8 mS/cm
4.3.2 How often to calibrate
· We recommend to calibrate the conductivity meter once per month under normal
conditions. · If the requirement for accuracy is high or the temperature of
the test sample has a big difference to the
reference temperature (25 °C), we recommend to do the calibration once a week.
· Users can tell if the meter needs a calibration by testing the standard
calibration solutions. If the
measurements you get have a big difference to the standard value of the
calibration solutions, then a calibration is necessary. · For new electrodes
or the meter that has been restored to factory default setting, we recommend
to conduct 3-4 points calibration. For general uses, users can choose the
calibration solutions that are close to the test samples to conduct 1 or 2
points calibration.
4.4 Conductivity Calibration (take 1413 S as an example)
4.4.1. Rinse the electrode in distilled or pure water, allow it to dry, wash
with a little of standard solution and submerge it in standard solution. Stir
the solution briefly and allow it to stay in the solution until a stable
reading is reached.
4.4.2. Press
key to enter the calibration mode. The “CAL” icon will flash at
the top right, and the scanning and locking process of calibration solution will appear at the bottom right.
4.4.3. When the meter locks 1413 S, stable icon
will display on LCD. Press
key to complete calibration. “End” icon will show up and the meter will return
to measuring mode and
will show up on the bottom left (see Figure-7).
Note: pressing
before the reading being stable ( shows up and stays),
the Err4 self-diagnosis icon will appear (see section 6.5.2). 4.4.4. For multi-point calibration, please repeat clause 4.3.1-4.3.2 until all the calibration is done. The meter can repeat calibration in the same calibration solution until the stable value is reached.
Figure-7
4.5 TDS and Conductivity
4.5.1. TDS and conductivity is linear related. The conversion factor is
0.40-1.00. Adjust the factor from – 6 –
parameter P2.6. The factory default setting is 0.71 and please refer to
Section 7.4. The meter only needs to be calibrated in Conductivity mode, then
after calibration of conductivity, the meter can switch from conductivity to
TDS. 4.5.2. Adjust TDS conversion factor in parameter setting P4 according to
the data collected during testing and experience. Table 10 lists some
commonly used Conductivity and TDS conversion factors. This is for your
reference only.
Table 10 Conductivity and TDS conversion factors
Conductivity of solution
TDS conversion factor
0-100 S/cm
0.60
100-1,000 S/cm
0.71
1-10 mS/cm
0.81
10-100 mS/cm
0.94
4.6 Sample Test
4.6.1. Rinse conductivity electrode in distilled or pure water, dry it, and
submerge it in the sample solution. Stir
the solution briefly and allow it to stay in the sample solution until a stable reading is reached and
icon
appears on LCD, then get the reading value, which is the conductivity value of
the solution. 4.6.2. During the process of calibration and measurement, the
meter has self-diagnosis functions, indicating the relative information as
below: Table 8.
Table 8 Self-diagnosis information of conductivity measurement mode
Display Icons
Contents
Checking
1. Check whether conductivity calibration
Wrong conductivity calibration solution or solution is correct.
the meter recognition of calibration
2. Check whether the meter connects the
solution is out of range.
electrode well.
3. Check whether the electrode is damaged.
Press
key when measuring value is Press
not stable during calibration.
key after
icon appears.
During calibration, the measuring value 1. Shake the electrode to eliminate bubbles in
electrode head.
being unstable for over 3 minutes.
2. Replace with new conductivity electrode.
4.6.3. Factory default setting For factory default setting, please refer to parameter setting P7 (Section 4.7.2). With this function, all calibration data is deleted and the meter restores to the theory value. Some functions restore to the original value. When calibration or measurement fails, please restore the meter to factory default setting and then perform recalibration or measurement. Please note once set the factory default, all the data deleted will be irretrievable.
– 7 –
4.7 Parameter Setting
Symbol
Parameter setting content
Table-9 Parameter
P1
Select electrode constant
P2
Select reference temperature
Adjust temperature compensation P3
coefficient
P4
Adjust TDS Factor
0.1, 1.0, 10 15 – 30 0.00 – 9.99% 0.40 1.00
P5
Select temperature unit
–
P6
Clear stored data
No Yes
P7
Restore to factory default
No Yes
Factory default setting 1.0 25
2.00% 0.71
No No
4.7.1 How to do the parameter setting:
In measurement mode, long press
to enter parameter setting P1. Then press
or
to change
menu from P1 to P2…P7. For details, please see Table-10.
Table-10 Parameter Setting
P1 — Select electrode’s constant1.0–10.0–0.1
1. Long press
to enter P1
2. Press
, “1.0” flashes, press
to confirm
to choose 1.010.00.1; press
3. Press
to enter P2, or press
to return to measurement mode.
P2–Select reference temperature (25.0–18.0–20.0)
1. Press
, “25.0” flashes, press
or
to adjust temp. from 15
to 30; press to confirm.
2. Press
to enter P3, or press
to return to measurement mode.
P3–Adjust temp. compensation coefficient (0.00-9.99%)
1. Press
, “2.00” flashes, press
or
to adjust from 0.00-9.99;
press
to confirm.
2. Press
to enter P4, or press
to return to measurement mode.
– 8 –
P4–Adjust TDS Factor (0.40-1.00)
1. Press
, “0.71” flashes, press
press
to confirm.
2. Press
to enter P5, or press
or
to adjust from 0.40-1.00;
to return to measurement mode.
P5 –(°C–°F) 1. Press flashes, press
, “°C” flashes, press to confirm.
2. Press
to enter P6, or press
, “°F” flashes; when parameter to return to measurement mode.
P6 — Clear storage (No–Yes)
1. Press
, “No” flashes, press
to choose NoYes; press
to
confirm No– not to clear data storage; Yes–clear all data storage
2. Press to enter P7, or press
to return to measurement mode.
P7 — Return to factory default mode (No–Yes)
Press
, “No” flashes, press
to choose NoYes; Press
to
confirm, the meter returns to measurement mode. No– not return to factory default mode; Yes–return to factory default mode
4.8 Conductivity Electrode’s Maintenance
4.8.1. Always keep the conductivity electrode clean. Before taking a
measurement, rinse the electrode in pure water. It is recommended to rinse it
again in the sample solution. When submerge the electrode in solution, stir
the solution briefly to eliminate air bubbles and allow it to stay until a
stable reading is reached. Conductivity electrodes are usually stored dry. For
conductivity electrodes that haven’t been used for a long time, users should
soak the electrode in 12.88 mS calibration solution for 5-10 minutes, or to
soak it in tap water for 1 to 2 hours. Rinse the electrode in pure water after
measurement.
4.8.2. The sensing rod of Model 2301T-F conductivity electrode is coated with
platinum black to minimize electrode polarization and expand measuring range.
The platinum black coating adopted our special processing technology, which
improves the electrode performance and the firmness of the coating. If the
platinum black electrode is stained, gently clean the electrode with soft
brush in warm water containing detergent or alcohol.
– 9 –
5 Complete Kit
Content
5.1
EC700 Benchtop Conductivity Meter
5.2
2301T-F Plastic Combination Conductivity Electrode
5.3
Conductivity standard calibration solutions: (84S/1413S /12.88mS, 50ml for each)
5.4
9V Power Adapter
5.5
Electrode Holder
5.6
Instruction Manual
Quantity 1 1
1 for each
1 1 set 1
6 Warranty
We warrant this instrument to be free from defects in material and workmanship
and agree to repair or replace free of charge, at option of APERA INSTRUMENTS
(Europe) GmbH, any malfunctioned or damaged product attributable to
responsibility of APERA INSTRUMENTS (Europe) GmbH for a period of TWO YEARS
(SIX MONTHS for the probe) from the delivery.
This limited warranty does not cover any damages due to: Transportation,
storage, improper use, failure to follow the product instructions or to
perform any preventive maintenance, modifications, combination or use with any
products, materials, processes, systems or other matter not provided or
authorized in writing by us, unauthorized repair, normal wear and tear, or
external causes such as accidents, abuse, or other actions or events beyond
our reasonable control.
APERA INSTRUMENTS (Europe) GmbH Wilhelm-Muthmann-Straße 18, 42329 Wuppertal
Germany Email: info@aperainst.de | ww.aperainst.de | Tel. +49 202 51988998
– 10 –
References
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