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Automated Pressure Calibrator
HART Operation
55
Run a Pressure Device Program
1. When a pressure program configuration is ready, push to start the test.
As the test runs, the Product controls the pressure to the setpoint. Once at
the setpoint and the pressure stabilizes (Ready is shown), the dwell
countdown timer will start.
2. Once the dwell is finished, use the Jog Knob as fine adjustment to make sure
the value on the pressure device reaches the displayed UUT reading.
3. Push when the reading becomes stable and reaches the setpoint.
4. After the Run step finishes, test results show on the display. Push page up or
page down if it has multiple pages.
A test report file named “XXXX (DATE) _XXXX(TIME).csv” is stored in the
internal mass storage disk. Use a USB cable connected to the chassis to copy
the data report.
HART Operation
The HART function of the product allows for calibration and testing of many
HART-enabled devices such as transmitters. The EMM uses Universal Practice
Commands and many Common Practice Commands that allow the user to
change parameters and easily make adjustments to the HART device. Some
HART devices require the use of specific device drivers in order to make
changes to parameters which the EMM is not equipped with. In this case, use of
a field communicator such as the Fluke 754 Documenting Process Calibrator is
necessary.
Pressure Transmitter Instructions
The Product tests, troubleshoots, and calibrates analog as well as “smart”
pressure transmitters with HART functionality. Pressure transmitters are usually
classified as an “analog” transmitter or a “smart” transmitter.
Analog Transmitters
Analog transmitters are fairly basic and let the user make two adjustments to
calibrate:
1. Zero the transmitter by adjusting the LRV (Lower Range Value) of the
transmitter to the zero pressure point that will supply an output of 4 mA.
2. Adjust the URV (Upper Range Value) of the transmitter to the upper working
pressure that will supply an output of 20 mA.
These transmitters are usually adjusted with a screwdriver by turning two
potentiometers on the top or side of the transmitter. The Product helps in the
calibration of these analog transmitters by providing an accurate, easy to control
source of pressure while also precisely measuring the analog 4-20 mA signal.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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