JF-1A CONDUCTIVITY SENSOR
A440-010
December, 2005
6
2.0 INSTRUCTION FOR SAFE USE
The D-2 JF-1A Conductivity Meter reads conductivity in picosiemens/meter, fuel
temperature in ITS-90 degrees C, and fully compensated Conductivity in picosiemens/
meter per ASTM D 2624, Appendix X2 in liquid fuels and solvents. The sensor can be
used in a 2 wire 4-20 mA industrial control loop or in conjunction with a serial input
device using RS-232 IEEE Standard ASCII Serial Input Data. Optionally a 2 wire (4-20
mA) temperature interface can be added to allow remote monitoring of fuel
temperature.
WARNING:
Immediately switch off the sensor in the case of emergency!
Until the sensor is fully installed in a filled product line do
not energize sensor.
When using the sensor to measure combustible media,
observe the regulations concerning transport and storage
of combustible liquids.
Observe applicable national regulations for installation abroad.
Only Ex d approved cable entry devices (e.g. cable gland) shall
be used, with the apparatus.
Sensor is intended for use in product lines where the absolute
maximum physical conditions do not exceed the specifications
listed in Section 6.0.
CAUTION:
Sensors must be accessible at all times to facilitate operation
and maintenance. Do not obstruct or block clear access.
Only specially trained and authorized persons are permitted to
maintain and repair JF-1A Sensors and their peripheral
equipment.
Always depressurize the liquid end first before carrying out any
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