FP7002/FP7002A Flow/Temperature Transmitter
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Section 4 - Calibration Cont.
4.2 Temperature Calibration
Equipment Required:
12-18 Vdc Regulated Power Supply
Type-K Thermocouple Probe (such as OMEGA Model: KTSS-HH)
Multimeter (such as OMEGA Model: HHM290)
Small potentiometer adjustment tool
Calibration Procedure:
1. Unscrew and remove the protection head cover.
2. Make wiring connections to the transmitter as shown on page 7.
3. Apply power and allow the unit to warm up for 10 minutes.
4. Place a reference temperature probe next to the body of the
paddlewheel flow sensor with the unit removed from the flow line
and lying on a work bench.
5. Connect the reference probe to a thermometer and allow the reading
to stabilize for a few minutes. Record the reference probe reading as
“Rtemp”
6. Calculate the correct current output that the transmitter should have
for the ambient temperature your flow sensor and reference probe
are exposed to using this formula.
0.16 x Rtemp + 4 = output setting
Example:
If your reference probe is reading 23.4°C
0.16 x 23.4 + 4 = 7.74 mA
7. Adjust potentiometer P3 for the correct current output you calculated
above.
8. Calibration complete.
