beautypg.com

General Tools and Instruments DCT2001 User Manual

Page 11

background image

4-3 Calibration procedures of Conductivity meter

The meter has been calibrated during manufacture.

However, it may be necessary to re-calibrate periodically.

Particularly when the instrument is used for a long period or

when the conductivity electrode is changed.

To re-calibrate the instrument, follow the procedures

shown below :

Range 1 ( 2 mS range ) calibration
1) Prepare a " 1.413 mS Calibration Solution ".

2) Immerse the head of " Conductivity Probe " ( 3-17, Fig. 1 )

into the 1,413 mS solution up to the immersion level.

3) Select the range to the " 2 mS " position.

4) Set the temperature coefficient factor value to " 2.0% per

"

5) At the same time push the following buttons together :

a. REC.( MAX./MIN. ) Button ( 3-3, Fig. 1 )

b. HOLD Button ( 3-4, Fig. 1 )
The upper display will show the flashing text of " CAL ".

The low display will show the flashing text of " 1.413 ".

6) Please release the two buttons when the display shows as

above and start flashing and then when the text stop

flashing, the range 1 will be calibrated to 1.413 mS

( There maybe a little deviation, and it is normal ).

*

After released two buttons but before the text (CAL,

1.413 ) stop flashing, if push the " HOLD Button " will

cancel the calibration procedures, the meter will return

to previous calibration value.

9