Apera Instruments TDS20 User Manual

6. Notes
6.1 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 1
st
point calibration will meet testing requirements.
6.2 The tester has self-diagnosis functions:
Symbol
Self-Diagnosis information
How to fix
Wrong calibration solution, which
exceeds the recognizable range of
the meter.
1. Check if calibration solution is
correct
2. Check if probe is damaged.
is pushed before measurement
is stable ( comes up)
Wait for the smile icon to stay,
and then short press
6.3 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.
6.4 We recommend replacing new calibration solutions after 5-10 times of calibrations
to keep the solution’s accuracy.
7. Parameter Setting
7.1 Parameter setting reference chart:
Symbol
Parameter Setting Items
Code
Factory Default
P1
TDS Factor
0.40 to 1.00
0.71
P2
Select Temperature Unit
°C - °F
°C
P3
Restore to factory default
No – Yes
No
7.2 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.

Apera Instruments TDS20 Specifications

General

Brand	Apera Instruments
Model	TDS20
Category	Test Equipment
Language	English