Fisher 244ER, 244EH manual Grounding, Configuration

Rosemount Models 244EH and 244ER PC-Programmable Temperature Transmitters

Grounding	The transmitter will operate with the current signal loop either floating
	or grounded. However, the extra noise in floating systems affects many
	types of readout devices. If the signal appears noisy or erratic,
	grounding the current signal loop at a single point may solve the
	problem. The best place to ground the loop is at the negative terminal
	of the power supply.
	The transmitter is electrically isolated to 500 V ac rms, so the input
	circuit also may be grounded at a single point. When using a grounded
	thermocouple, the grounded junction serves as this point. Do not
	ground the current signal loop at more than one point.
	NOTE
	Do not ground the signal wire at both ends.
CONFIGURATION
	The Models 244EH and 244ER are designed to be configured using a
	Model 244EC Configuration Interface connected to a Microsoft
	Windows-compatible PC running the Models 244EH and 244ER
	Configuration Software program. Configuration parameters include:
	•	Sensor type
	•	Number of wires
	• 50/60 Hz filter selection
	•	Engineering units
	• Upper and lower range values
	•	Damping value
	•	Tag
	•	Intermittent Sensor Detect
	Each configuration parameter is explained in the on-line help provided

with the software. To access the on-line help, either click the HELP button on the main configuration window (see Figure 3-1) or choose a topic from the HELP menu.

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