APERA INSTRUMENTS EC20 Pocket Conductivity Tester Instruction Manual
- June 3, 2024
- APERA INSTRUMENTS
Table of Contents
APERA INSTRUMENTS EC20 Pocket Conductivity Tester
Battery Installation
Please install batteries according to the following steps. ***** Please note the correct direction of battery installation:
The Positive Side (“+”) OF EVERY SINGLE Battery MUST FACE UP.
**(WRONG INSTALLATION OF BATTERIES WILL CAUSE DAMAGE TO THE TESTER AND POTENTIAL HAZARDS!)**
(batteries are pre-installed)
Keypad Functions
- Short press——- < 2 seconds
- Long press——– > 2 seconds
|
- Short press to turn on, long press to turn off;
- When turned off, long press to enter setup;
- In mode setting, short press to change parameter;
---|---
|
- When turned on, long press to enter calibration mode.
- In calibration mode, short press to confirm calibration;
- In mode setting, short press to confirm parameter selection.
Complete Kit
Calibration
- Rinse the probe in distilled water and dry it with a clean tissue. Short press to turn on the tester.
- Long press to enter calibration mode; Short press to exit.
- Dip the probe into 1413 μS/cm calibration solution. Stir gently, leave it to stand, LCD displays (Diagram 3), short press to complete
- 1-point calibration. The tester returns to measuring mode, and calibration icon M appears at the bottom left of LCD.
- Rinse probe in distilled water and dry it. Follow the steps in 4.2-4.3 to complete 2nd point calibration in 12.88 mS/cm calibration solution, tester returns to measurement mode, calibration icons M H display on bottom left of LCD.
Diagram – 3
Conductivity Measurement
- Short press to turn on tester. Rinse probe in distilled water and dry it with a clean tissue to remove excess water.
- Stir the probe in the sample solution gently, leave it to stand. Get readings after the smile icon comes up and stays.
- Rinse off the tester thoroughly in distilled water after each test.
Notes
-
If it’s first time use or the tester hasn’t been used for a long time, we recommend soaking the probe in 12.88 mS/cm solution for 15-30 minutes to restore its sensitivity and speed up the response time.
-
The tester adopts 1413 µS and 12.88 mS standard calibration solutions. Users can use 1–2-point calibrations as needed. For most circumstances, calibrating in 1413 µS to complete 1st point calibration will meet testing requirements.
-
Unit Information: 1 mS/cm = 1000 µS/cm
Once the readings are greater than 2000µS/cm, the unit will automatically become mS/cm. -
The tester has self-diagnosis functions:
Symbol| Self-Diagnosis information| How to fix
---|---|---
Er1
| Wrong calibration solution, which exceeds the recognizable range of the meter.|
1. Check if calibration solution is correct Check if probe is damaged. Er2
| is pushed before measurement is stable ( comes up and stays)| Wait for the
smile icon to stay, and then short press
5. The tester has already been calibrated after manufacture. Usually, users can use the tester right away, or test it in the calibration solutions to test its accuracy. When error is large, calibrate it before using.
Parameter Setting
-
Parameter setting reference chart:
Symbol| Parameter Setting content| Code| Factory Default
---|---|---|---
P1| Select conductivity ranges| Aut-µS-mS| Aut
P2| Select Temperature Unit| °C – °F| °C
P3| Restore to factory default| No – Yes| No -
How to setup parameters:
When turned off, long press to enter setup → short press to switch P1-P2-P3 -
→ Short press , parameter flickering→short press to choose, short press to confirm parameter selection→Long press to switch off.
-
Parameter setting notes
-
Select conductivity ranges (P1):
Aut– All ranges: 0~199.9 μS/cm, 20~1999 μS/cm, 2.0~20.0mS/cm; Factory default is Aut. -
P2-Select temperature unit (°C-°F)
In P1 mode, press to enter P2, press , °C or °F flickering, press to choose °C-°F, press to confirm parameter selection. Long press to return to measurement mode. -
Restore to factory default:
Select Yes to restore the calibration to the theoretical values and parameter setting to original values. When meter’s calibration or measurement performs abnormally, this function can be adopted so the meter goes back to factory default setting and then users can conduct calibration or take measurements again.
-
Technical Specifications
Conductivity| Range| 0~199.9 µS/cm, 20~1999µS/cm,
2.0~20.00mS/cm
---|---|---
Resolution| 0.1/1 µS/cm, 0.01 mS/cm
Accuracy| ±1% F.S±1 digit
Calibration points| 1-2 points auto calibration
Automatic Temp. Compensation| 0-50˚C
Temp.| Range| 0-50˚C
Resolution| 0.1˚C
Accuracy| ±0.5˚C
Other Functions & Parameters
Indication of calibration points| MH| ****
Auto Power-off
| Power-off in 8 minutes if no operation
---|---|---|---
Indication of stable measurements|
| ****
Waterproof level
| ****
IP67, floats on water
Self-Diagnosis information| ****
Er1, Er2
| ****
Power Supply
| ****
AAA batteries*4
Low battery reminder
| Flashes to remind to replace batteries| ****
Battery Life
| ****
Up to 1000 hours of continuous operation
Dimensions/Weight
| ****
Instrument: 4031178mm/107g; Carrying case: 190165140mm/438g
Warranty
We warrant this instrument to be free from defects in material and workmanship
and agrees 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 from the delivery (a six-month limited
warranty applies to electrodes). Warranty period is the time limit to provide
free service for the products purchased by customers, not the service life of
the tester or electrodes.
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
Contact: info@aperainst.de
Website: www.aperainst.de
Tel. +49 202 51988998
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>