Apera Instruments Salt20 User manual

Salt20 Pocket Salinity Tester
Instruction Manual
APERA INSTRUMENTS (Europe) GmbH
www.aperainst.de

1. Battery Installation
Please install batteries according to the following steps. Please note polarity:
“+” (anode) is upward; “-” (cathode) is downward
Note: This salinity meter measures practical salinity converted from electrical
conductivity (NaCl Concentration). It does not measure absolute salinity.
2. Keypad Functions
■Short press------- < 2 seconds
■Long press-------- > 2 seconds
1. Short press to turn on, long press to turn off;
2. When turned off, long press to enter setup;
3. In mode setting, short press to change
parameter;
1. When turned on, long press to enter
calibration mode.
2. In calibration mode, short press to confirm
calibration;
3. In mode setting, short press to confirm
parameter selection.
Diagram - 1

3. Complete Kit
4. Calibration
4.1 Rinse the probe in distilled water and dry it. Short press to turn on the tester.
4.2 Long press to enter calibration mode; Short press to exit.
4.3 Dip the probe into the calibration solution. Stir gently, leave it to stand, LCD
displays , short press to complete 1-point calibration.
The tester returns to measuring mode, and calibration icon appears at the button
left of LCD.
5. Salinity Measurement
5.1 Short press to turn on tester. Rinse probe in distilled water and dry it.
5.2 Stir probe in the sample solution gently, leave it to stand. Get readings after the
smile icon comes up and stays.
6. Notes
6.1 The tester has self-diagnosis functions:
Diagram - 2

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 isdamaged.
is pushed before
measurement is stable (
comes up)
Wait for the smile icon to stay,
and then short press
6.2 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.
7. Parameter Setting
7.1 Parameter setting reference chart:
Symbol
Parameter Setting content
Code
Factory Default
P1
Select salinity unit
ppt –g/l
ppt
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.
7.3 Parameter setting notes
a) Select salinity unit(P1):
Optional units: ppt –g/l, factory default is ppt.
b) 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.
c) 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.
8. Technical Specifications
Salinity
Range
0 –10.0 ppt
Resolution
0.1 ppt
Accuracy
±1% F.S
Calibration points
1 point auto calibration
Automatic Temp. Compensation
0-50˚C
Temp.
Range
0-50˚C
Resolution
0.1˚C
Accuracy
±0.5˚C
9. Other Functions & Parameters
Indication of calibration
points
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
1000 hours
Dimensions/Weight
Instrument: 40*31*178mm/107g;
Carrying case: 190*165*140mm/438g

10. Warranty
We warrant this instrument to be free from defects in material and workmanship and
agrees to repair or replace freeof charge, at optionof 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 probes). This warranty does not apply to defects
resulting from actions such as misuse (violation of the instructions in this manual or
operations in the manner not specified in this manual), improper maintenance, and
unauthorized repairs. Warranty period is the time limit to provide free service for the
products purchased by customers, not the service life of the tester or probe.
Apera Instruments reserves the right to update the information in this manual without giving notice in
advance.
APERA INSTRUMENTS (Europe) GmbH
Wilhelm-Muthmann-Straße 18
42329 Wuppertal, Germany
Contact: [e-mail]
Website: www.aperainst.de
Tel. [phone]