Calibration Procedures; Flow Calibration - Omega FMA1700A User Manual

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NOTE: OVER TIGHTENING WILL DEFORM AND RENDER THE RFE DEFECTIVE.
It is advisable that at least one calibration point be checked after re-installing the
inlet fitting-See section (g).
IT IS NOT RECOMMENDED TO ATTEMPT TO DISASSEMBLE, OR REPAIR
MAXIMUM FLOW RATE SERIES MODELS 50 L/min, 100 L/min, 200 L/min,
500 L/min or 1000 L/min. DISASSEMBLY NECESSITATES RE-CALIBRATION.
7.

CALIBRATION PROCEDURES

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NOTE: REMOVAL OF THE FACTORY INSTALLED CALIBRATION SEALS AND/OR
NOTE: REMOVAL OF THE FACTORY INSTALLED CALIBRATION SEALS AND/OR
ANY ADJUSTMENTS MADE TO THE METER, AS DESCRIBED IN THIS SECTION,
ANY ADJUSTMENTS MADE TO THE METER, AS DESCRIBED IN THIS SECTION,
WILL VOID ANY CALIBRATION WARRANTY APPLICABLE.
WILL VOID ANY CALIBRATION WARRANTY APPLICABLE.
7.1

Flow Calibration

OMEGA7 Engineering Flow Calibration Laboratory offers professional calibration
support for Mass Flow Meters, using precision calibrators under strictly controlled
conditions. NIST traceable calibrations are available. Calibrations can also be per-
formed at customers' site using available standards.
Factory calibrations are performed using NIST traceable precision volumetric
calibrators incorporating liquid sealed frictionless actuators. Generally, calibra-
tions are performed using dry nitrogen gas. The calibration can then be corrected
to the appropriate gas desired based on relative correction [K] factors shown in
the gas factor table - see Appendix 2. A reference gas, other than nitrogen, may
be used to better approximate the flow characteristics of certain gases.
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