Meriam M4 Series Precision Calibrator Data Logger Manual Manuel d'utilisateur télécharger pdf (Page 37)

ZM4 Instruction Manual 9R87-B June 2012

Applications

The M4 is designed to power up a transmitter to calibrate the pressure

channel and channel and mA output. The unit under test should be isolated

from the process and taken out of the loop before starting the calibration.

Please make sure you have the proper sensor and range before starting the

calibration. The Full Scale range of the sensor is displayed next to the sensor

location in the current engineering units.

To calibrate the transmitter under test, insert test leads into the bottom of the

M4. Observe loop polarity using the color coded standard banana jacks (Red

+) and (Black -). If the loop requires power, the M4 will source 24V and

measure the mA in the loop. The 24V source mode is located under the VMA

setup menu. Field devices with compliance voltage about 19V may not be

able to be calibrated. See the load line curve under specifications.

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Meriam M4 Series Precision Calibrator Data Logger Manual Manuel d'utilisateur Page 37