Xylem F 900-3 User Manual
SenTix® 940
SenTix® 940-3
SenTix® F900
SenTix® F 900-3
pH electrode with gel electrolyte
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Operating manual
SenTix
Note
The latest version of the present operating manual can be found on the
Internet under www.WTW.com.
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Copyright © Weilheim 2010, WTW GmbH
Reprinting - even as excerpts - is only allowed with the explicit written
authorization of WTW GmbH, Weilheim.
Printed in Germany.
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SenTix General information
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 communication 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
WTW Model Reference
elektrolyte
SenTix
SenTix
SenTix
SenTix
®
940 Gel Fiber Yes Plastic shaft
®
940-3 Gel Fiber Yes Plastic shaft
®
F 900 Gel Fiber Yes geringe Temperaturempfindlichkeit,
®
F 900-3 Gel Fiber Yes geringe Temperaturempfindlichkeit,
Junction NTC Special fatures
Iod/Iodid-Referenzsystem
Iod/Iodid-Referenzsystem
Measurement and application characteristics
WTW model pH measuring range Allowed
temperature
range
SenTix
SenTix
SenTix
SenTix
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®
940 0.000 ... 14.000 0 ... 80 °C < 1 GOhm Field
®
940-3 0.000 ... 14.000 0 ... 80 °C < 1 GOhm Field
®
F 900 0.000 ... 14.000 0 ... 80 °C < 1 GOhm Field
®
F 900-3 0.000 ... 14.000 0 ... 80 °C < 1 GOhm Field
Membrane
resistance at
25 °C
Typical application
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