One-Point Rh Sensor Verification; One-Point Barometric Pressure Verification; One-Point Volumetric Flow Rate Verification - Thermo Scientific 5028i Instruction Manual

Installation
Acceptance Testing and Startup Procedures
One-Point RH Sensor
Verification
One-Point Barometric
Pressure Verification
One-Point Volumetric
Flow Rate Verification
2-6 Model 5028i Instruction Manual
For more information about the temperature sensor calibration, see the
"Calibration" chapter.
Record the ambient RH sensor reading from the Model 5028i and
compare to your NIST-traceable Hygrometer. The Model 5028i RH
sensor should compare within ±2% RH tolerance of your NIST-
traceable hygrometer. If the RH sensor performance is within this
tolerance, the acceptance test has passed.
Note The ambient temperature verification should be completed
prior to performing the RH-sensor verification due to a thermal
compensation applied to the RH-sensor. Furthermore, try to avoid RH
comparisons <30% RH and >80% RH.
If the RH sensor is slightly out of tolerance, ±3% RH, the acceptance
test should be classified as marginal. If the sensor performance is outside
this range, please perform a RH-sensor calibration.
For more information about the RH sensor calibration, see the
"Calibration" chapter.
It is recommended that the NIST-traceable hygrometer should also
compare well with the RH-measurement used within a gravimetric
laboratory that is part of a compliance program.
Record the Model 5028i barometric pressure sensor reading. This value
is in units of mmHg. If necessary, using the pressure unit conversion
(Table 2–1) to convert your NIST-traceable measurement to units of
mmHg for an appropriate comparison. The Model 5028i barometric
sensor should compare within ±10.0 mmHg tolerance of your NIST-
traceable barometer. If the Model 5028i sensor performance is within
this tolerance, the acceptance test has passed.
If the sensor is slightly out of tolerance, ±12 mmHg, the acceptance test
should be classified as marginal. If the sensor performance is outside this
range, please perform a sensor calibration.
For more information about the barometric pressure sensor calibration,
see the "Calibration" chapter.
The flow rate of the Model 5028i should be verified during this
acceptance test. Prior to this test it is important for the previous
temperature and pressure acceptance tests to be completed. Should the
ambient temperature, flow temperature or barametric sensors require
calibration, this should be done prior to the flow rate verification.
Press to return to the Diagnostics menu, and choose Flows.
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