A-20
Section 4 Model 199 Differential Pressure Unit (DPU)
Calibration Setup
The test equipment required to calibrate the Model 199 DPU, when attached
to an indicator or switch is shown in Figure 4.1.
All Barton instruments using the Model 199 DPU as actuator are calibrated at
the factory.
All DPUs sold as replacement units or as actuators for other applications are
checked for accuracy prior to shipment.
Normally, the DPU is calibrated after installation on a specic instrument.
Refer to the separate instrument manual for specic calibration procedures.
Figure 4.1—Calibration setup
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