APERA INSTRUMENTS 5053 Bedienungsanleitung Seite 2

Ⅰ. Technical Parameters:
1. Range：0 ~ 20.0 %
2. Resolution: 0.1%
3. Accuracy：±2%FS ±one world
4. Temperature compensation range：0 ~ 60°C (automatic), no temperature display.
5. Automatic：1 point calibration (50.0 mS/cm)
6. Power：AAA Batteries x 2，for more than 100 consecutive hours.
7. Dimension and Weight：39×25×176mm / 87g
8. Waterproof Grade：IP57
Ⅱ. Operations:
1. Calibration：Wash the electrode with pure water and shake off the water on the electrode,
place it into 50.0 mS calibration solution, still it after stirring until the reading is stable. Repeat
the above operation several times until the reading value is displayed repeatedly. Press the
key for about 2 seconds until the icon "
The calibration is done after several seconds.
2. Measurement：Wash the electrode with pure water and shake off the water on the electrode,
place it into the sample solution, still it after stirring, and take the reading when the value is
stable.
3. Wash the electrode with pure water and shake off the water on the electrode, then replace
the electrode cap on it.
III. Notes:
1. The meter has been calibrated before delivery. Generally, user can use it directly. Under
normal situations, calibrate once every 1-2 months.
2. If the electrode is stained, please clean it by warm water with detergent or alcohol. Please do
not wipe it to avoid damaging the platinum black coating on the electrode surface.
3. The meter is automatically power off under no-operation condition next 10 minutes.
4. Please replace the battery when the icon "
IV. 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 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 advanced notice.
5053 Salinity Pocket Tester Operation Manual
" appears on LCD, then "50.0 mS" is twinkling.
" appears on LCD.
APERA INSTRUMENTS (Europe) GmbH
Wilhelm-Muthmann-Straße 18, 42329 Wuppertal Germany
Email: info@aperainst.de | www.aperainst.de
Tel. +49 202 51988998