Xylem Sentix F 900-3 - Manual (Page 4)

Commissioning, measuring, calibration SenTix
12 ba75844e02 04/2010
Shaft dimensions, material, electrical connection
Connection cable
Accuracy of the IDS measuring technique
Commissioning, measuring, calibration
Commissioning Prepare the electrode for measuring as follows:
z Remove the watering cap from the electrode tip. Possible salt deposits in
the area of the watering cap do not affect the measuring characteristics
and can easily be removed with deionized water.
Note
Please keep the watering cap. It is required for the electrode to be stored.
Always keep the watering cap clean.
z Remove any gas bubbles behind the pH membrane by shaking.
z
Connect the electrode to the meter.
z Calibrate the electrode according to the operating manual of the meter
and observe the following rules while doing so:
WTW model Shaft Electrical connection
Length
[mm] Ø [mm] Material Combination
electrode
connection Meter con-
nection Cable
length
SenTix
®
940 120 12 PPE/PS Fixed cable Digital plug 1.5 m
SenTix
®
940-3 120 12 PPE/PS Fixed cable Digital plug 3 m
SenTix
®
F 900 120 12 COC Fixed cable Digital plug 1.5 m
SenTix
®
F 900-3 120 12 COC Fixed cable Digital plug 3 m
Diameter 4.3 mm
Smallest allowed
bend radius Fixed installation: 20 mm
Flexible use: 60 mm
Plug type Socket, 4 pins
Measured parameter Accuracy (± 1 digit)
pH ± 0,004
U [mV] ± 0,2
T [°C] ± 0,1