Measurement Specialties 9116 user manual User Software

Pressure Systems, Inc. Model 9116 User’s Manual

●The Re-Zero calibration command (Calculate & Set Offsets) will automatically shift the calibration valve unless the option is disabled with the Set Operating Options (‘w’) command. The valve will be placed in the CAL position (with a small delay) before taking Re-zero data. Afterwards, the valve will be placed in the RUN position.

●Zero (offset) and Span (gain) correction terms are not automatically saved in transducer nonvolatile memory. If they are not saved using the Set Operating Options (‘w’) command, they will be lost when module power is turned off. Verify that new coefficients produce valid data before saving them.

●When Span calibrating a multi-range unit, attach the calibration pressures to the individual measurement input ports of the range being calibrated and not to the CAL input port. Use of the common CAL input may result in over-pressuring lower range channels. When sending the Calculate and Set Gain (‘Z’) command, ensure that the position field bits are set only for those channels that are attached to the calibration pressure.

●When using the standard Calculate and Set Gain (‘Z’) command, the module firmware assumes, by default, that each particular transducer’s full-scale pressure is present at its pneumatic/hydraulic input. All internal calculations of gain correction are based on the exact full scale pressure being applied to the transducers. If it is not possible to provide this exact pressure (as when using a dead weight tester), the alternate form of this command should be used. This allows the host to specify the exact upscale pressure applied to the transducers being calibrated.

●When using the standard Calculate and Set Offsets (‘h’) command, the module firmware assumes, by default, that each particular transducer’s zero pressure is present at its pneumatic/hydraulic input. All internal calculations of zero correction are based on an input pressure of 0.0 psi. If it is not possible to provide this exact pressure (as when calibrating an absolute pressure transducer), the alternate form of this command should be used. This allows the host to specify the exact minimum pressure applied to the transducers being calibrated.

6.3User Software

For a complete description of all NetScanner™ System (and your Model 9116) software, please refer to the NetScanner™ Unified Startup Software (NUSS) User’s Manual.

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