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5.2-1 HART Resistor Selection
The PCL1200 can be set-up so that the 250 ohm resistor required for
Hart configuration devices resides inside the PCL1200. Enabling the
PCL1200's internal 250 ohm resistor eliminates the need to manually
add a series resistor during a Hart calibration process.
NOTE:
When the PCL1200's internal 250 resistor is enabled, maximum
load driving capability drops from 1000 ohms @ 20mA to 750 ohms
@20mA.
Enable/Disable Procedure
1. Remove the battery cover and remove the 2 screws that are at
the top of the case.
2. Remove the 2 screws on the bottom or lower portion of the case.
3. Gently remove the top half of the case from the bottom.
4. Figure 10a. shows the location of the Hart jumpers.
5.3 Measuring Pressure
Note:
The OMEGA Pressure Module connector 700mA needs to be
purchased to connect pressure module to calibrator.
Note:
The PCL1200 is compatible with OMEGA Calibrator Pressure
Modules. The accessory PCL-PMA is required for pressure measurement.
Note:
Pressure is not read from modules with frequency or pulse train
mode enabled.
Warning!
To avoid a violent release of pressure in a pressurized system, shut off the
valve and slowly bleed off the pressure before you attach the pressure
module to the pressure line.
Caution
To avoid mechanically damaging the pressure module, never apply more
than 10 ft-lb. of torque between the pressure module fittings, or between
the fittings an the body of the module.
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Summary of Contents for PCL1200
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