Manual

SenTix General information
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ba75844e02 04/2010
General information
Automatic sensor
recognition
The sensor electronics with the stored sensor data is in the connecting head
of the electrode. The data include, among other things, the sensor type and
series number. With each calibration, the calibration data is written in the
sensor and the calibration history is recorded. The data is recalled by the
meter when the sensor is connected and is used for measurement and for
measured value documentation. Storing the calibration data in the sensor
ensures that the correct slope and asymmetry are automatically used if the
sensor is operated with several meters.
The digital transmission technique guarantees the failure-free communi-
cation with the meter even with long connection cables. If the sensor firmware
is enhanced by WTW, it can be updated via the meter.
Technical Data
General data
Measurement and application characteristics
WTW Model Reference
elektrolyte
Junction NTC Special fatures
SenTix
®
940 Gel Fiber Yes Plastic shaft
SenTix
®
940-3 Gel Fiber Yes Plastic shaft
SenTix
®
F 900 Gel Fiber Yes geringe Temperaturempfindlichkeit,
Iod/Iodid-Referenzsystem
SenTix
®
F 900-3 Gel Fiber Yes geringe Temperaturempfindlichkeit,
Iod/Iodid-Referenzsystem
WTW model pH measuring range Allowed
temperature
range
Membrane
resistance at
25 °C
Typical applica-
tion
SenTix
®
940 0.000 ... 14.000 0 ... 80 °C < 1 GOhm Field
SenTix
®
940-3 0.000 ... 14.000 0 ... 80 °C < 1 GOhm Field
SenTix
®
F 900 0.000 ... 14.000 0 ... 80 °C < 1 GOhm Field
SenTix
®
F 900-3 0.000 ... 14.000 0 ... 80 °C < 1 GOhm Field