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Figure 1.
Avoiding Overpressure Damage
Applying pressure in excess of the BURST PRESSURE
specified on the pressure module can destroy the pressure
module. Burst pressure is 3X full scale.
Avoiding Corrosion Damage
To avoid damaging the pressure module from corrosion, use
it only with specified media as shown below:
High: any medium that is compatible with type 316
stainless steel.
Low: dry, noncorrosive gasses only.
Recommended Measurement Technique
For best results, it is recommended that the module be
pressurized to full scale and then vented to zero pressure
(atmosphere) prior to zeroing and making measurements.
Low range pressure modules may be sensitive to
gravity. For best results, pressure modules 30 psi
and below should be held at the same physical
orientation from the time they are zeroed until the
measurement is complete.
Model
Range
Fluke-700P22
0 to 1.0000 psi
0 to 6.8900 kPa
0 to 6.89 E-2 bar
Fluke-700P23
0 to 5.0000 psi
0 to 34.000 kPa
0 to 0.3400 bar
Fluke-700P24
0 to 15.000 psi
0 to 100.00 kPa
0 to 1.0000 bar
1.
Use of pressure zero function is required to achieve these specifications. Contact your Fluke Service Center for upgrade of your Fluke 701 or
Fluke 702 V1.0, V1.1, or V1.2 Calibrator.
2.
Available pressure units (inHg, kg/cm
3.
Accuracy specifications apply for 1 year for 0 to 100% of full span from 0 to 50 C. Typical uncertainty is 1% of full span from
-10 C to 0 C.
4.
Maximum non-destructive pressure: 3X maximum rated pressure, including common mode pressure.
5.
Maximum common mode pressure: 3X maximum rated pressure.
6.
Specifications reflect a confidence interval of 95%.
Note
Table 1. Specifications
2
Gage or
Differential
Nonisolated
Differential
Differential
Differential
2
, mmH
0) are determined by the calibrator being used.
2
Pressure Calibration Kit
The Fluke-700PCK Pressure Calibration Kit makes it possible
to calibrate pressure modules at ambient temperature with a
precision pressure calibrator better than the module
specification. A 386 or better PC and Windows
are required. The kit is an optional accessory available from
your distributor or Fluke.
Performance Test
If you need to check that the pressure module meets its
accuracy specification, use a dead weight tester or suitable
pressure calibrator. The accuracy of the dead weight tester or
pressure calibrator should be significantly better than the
700P2X Series pressure specification. Proceed as follows to
verify that a pressure module is operating within
specification:
1.
Read the pressure value with no externally applied
pressure to make sure the 0% of scale is correct. When
reading the pressure, press the ZERO key to remove
any zero offset.
The pressure ZERO function is available on Fluke-
701 and Fluke-702 calibrators with V1.3 or higher
software. Contact your Fluke Service Center for
upgrade of earlier calibrators.
2.
Connect the pressure module to a dead weight tester.
3.
Set the dead weight tester to 20% of the pressure
module's full scale value.
4.
Make sure the reading agrees with the dead weight
tester value within the specification in Table 1.
5.
Set the dead weight tester to 40, 60, 80, and 100% of
full scale and compare the respective readings.
6.
If temperature sensitivity is of concern, repeat steps 1
through 5 at various controlled temperatures.
1
(% of full span)
Isolated or
Reference
Uncertainty
(23
3 C)
Isolated
0.100%
Isolated
0.025%
Isolated
0.025%
Note
Stability
Temp
(1 Year)
(0 to 50 C)
0.020%
0.030%
0.010%
0.015%
0.010%
0.015%
3.1 or later
®
Total
3
Uncertainty
0.150%
0.050%
0.050%
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