JF-1A Conductivity Sensor
A440-010
December, 2005
23
Table 3
SYSTEM SPECIFICATIONS
ELEMENT
SPECIFICATION
Flow Range
0 – 7.0 M/s Max
Fuel Process Temperature -20 – 40 C (T4)
Environmental
Temperature
-20 to 60 C Operation
-40 to 80 C Storage
Power 2-Wire Input
24 VDC Minimum
38 VDC Maximum
Power 4-Wire Input
7 VDC Minimum
38 VDC Maximum
Pressure
150 PSIA Maximum
Usage
Class 1, Division 2
ATEX Certification
Type II 2G
EExd [ia] IIC T4
FM Certification
Pending
UL Certification
Pending
CONDUCTIVITY READINGS
The following table details current output readings for the JF-1A sensor with a
nominal 0-500 pS/M range representing 4 – 20 mA.
CONDUCTIVITY (Ps/M)
Current (mA)
Voltage * (Volts)
0.0
4.0
1.00
62.5
6.0
1.50
125.0
8.0
2.00
187.5
10.0
2.50
250.0
12.0
3.00
312.5
14.0
3.50
375.0
16.0
4.00
437.5
18.0
4.50
500.0
20.0
5.00
•
250 Ohm Voltage Sensing Resistor Used
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