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Extra functions for panel- and rail-mount monitors

An Amalgamated Instrument product story
Edited by the Engineeringtalk editorial team Apr 20, 2004

The PM4-RS panel-mount monitor and the RM4-RS DIN-rail-mount monitor have been enhanced to allow them to be used in many different display modes.

The PM4-RS panel-mount monitor and the RM4-RS DIN-rail-mount monitor, manufactured by Amalgamated Instrument Co (AIC), have been enhanced to allow them to be used in many different display modes.

The instruments can be programmed to operate in the following modes.

Direct display mode displays ASCII strings from most devices.

In poll mode up to eight characters can be sent to request data (can communicate with most devices).

Arithmetic mode accepts data from up to eight RS485 or RS422 sources and combines the data arithmetically (available for AIC products).

Scanning mode scans up to eight inputs from other AIC products and displays the value with an indication of which input is being viewed.

A special mode allows the PM4-RS or RM-RS to act as a slave display when connected to a TP488 eight-channel scanning monitor.

In comma separated mode the PM4-RS or RM4-RS will accept up to eight display values sent sequentially and separated by a comma.

The values can be manually scanned or set to display automatically.

Wind speed and direction (NEMA) mode is a specialised mode used only with the model WS-MMW-005 solid state wind speed/direction sensor.

Wind speed and wind direction displays are toggled using the pushbuttons on the front of the instruments.

Setpoint/alarm relays in the PM4 or RM4 monitors can be set against the input channels.

This allows alarms to be raised in a control room, for example, as well as at the source.

These enhancements give a lot more control and information than mere repeater or mimic displays and will find wide spread use in situations where critical parameters need to be monitored and critical situations alerted remotely.

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