eutech-instruments waterproof c401 colorimeter 사용자 설명서

Calibration: Chlorine, Free & Total

 

 

C401/301/201/102/101 

 

 

 

24

1. 

Prepare a Chlorine standard in the 4.1-5.0 ppm Cl

2

 range, measure 

and record the concentration value. 

2.  Ensure the meter is switched off. Press and hold the ZERO key 

while switching the meter on by pressing the ON/OFF key.  The 
meter will momentarily flash the model number and then display the 
CAL annunciator at the top left corner of the screen indicating the 
instrument is in calibration mode. 

3. 

Press the MODE key repeatedly until [CL-F] (for calibrating Chlorine 
Free), or [CL-T], (for calibrating Chlorine Total), is displayed. 

OFF

ON

ZERO

MODE

Press Mode to select 
test  parameter of 

“CL-F” for Free 
Chlorine or “CL -T” 

for Total Chlorine

 

4.  Press the READ/ENTER key to confirm the selected test. The 

meter will display [bLNK] indicating it is 
waiting for a blanking sample.  

5. 

Select a clean vial, unscrew the cap and fill with deionised water to 
the line on the vial. Replace the cap, ensuring it is screwed on 
finger tight to the vial. 

6. 

Ensure the outside of the vial is clean, dry and absent of any marks 
or finger-prints. Gently push the vial fully into sample well of the 
instrument, whilst aligning the ▼ mark on the vial with the ▲ mark 
on the meter. 

7. 

Press the ZERO key to blank the meter to that vial; the meter will 
display [ZERo] whilst this is taking place. 

8.  Remove the blanking vial from the meter. The meter displays 4.1 

ppm, with the CAL annunciator on the top left corner. 

9.  Use the MODE key repeatedly to select the concentration of the 

prepared calibration standard in the 4.1 - 5.0 ppm range. 

MODE

ZERO

ppm

Press Mode to 

select calibration 

point from 4.1 ppm 

to 5.0 ppm in an 
incremental circular 

manner.