TurbiTechw² LR Instruction Manual
•
Protective gloves.
•
Cleaning Materials
Prior to taking any measurements, thoroughly wash any containers used.
9.3 Calibration Zero
To calibrate the sensor, switch off the inlet hose and remove the cleaning module. The cleaning
module is located in the top of the measuring cell and locates with a screwed collar. A location peg
makes sure the module is correctly aligned during replacement. When replacing the module ensure
the O-ring remains correctly situated.
A dry clean cloth is required to carefully wipe around the inside of the chamber to remove any moisture
and fouling. The importance of this stage cannot be over emphasised; even the smallest trace of
moisture on the windows will invalidate the solid reference value. It is also important to recognise that
placing the solid reference in the cell for prolonged periods will not obtain a stable result. Even within a
recently dried cell, moisture absorbed inside the flow cell acetyl will leach out and cause the windows
and solid reference to mist up, thus causing the reading to increase. To calibrate zero, place the solid
reference inside the flow cell with the blank sides facing forward and to the right (0 NTU mark to the
front). Turn the solid reference clockwise as far as possible (looking down on top of the cell) to ensure
consistency of positioning.
From the 7300w² Monitor, navigate to the Calibration menu as follows-
•
Press
to show the “MAIN MENU”.
•
Select “MEASUREMENT CONFIG” by pressing
and press
to accept.
•
Select “TurbiTechw
2
” by pressing
and press
to accept.
•
Select “SET ZERO” by pressing
and press
to accept.
•
The SET ZERO screen will be displayed, press
to move on.
•
The ZERO Calibration screen will be displayed.
•
Wait for the value to stabilise, then press
to accept.
•
Press
several times to return back to the DISPLAY screen.
•
Zero calibration is now complete.
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225769IM - Issue - 05 Issue Date 30/04/2019
M:01 CONFIG
M:01 Info
M:01 Title
M:01 Set Zero
M:01 Averaging
M:01 Remove
M:01 Units
M:01 Set Cal
SENSOR CONFIG
Sensor Status
Add Sensor
S:01 TurbiTechw
2
LR (0-30)
M:01 SET CAL
ZERO MEASUREMENT
M:01 Turbidity
S:01 TurbiTechw
2
LR (0-30)
SN: 400001
Press OK to contiue or MENU to Exit
M:01 SET CAL
Insert calibration standard into cell
and wait for measurement to stabilise
Press OK to contiue or MENU to Exit
0.02
NTU
