MM1500 Strain Gauge (Bridge) Input Single Alarm

Description

The MM1500 monitors the DC input signal from a strain gauge bridge and trips a dpdt, 5 A relay when the input exceeds the desired level. Normal operation has the relay energized for the non-alarm condition and de-energized for an alarm condition.  This provides a fail-safe alarm condition for loss of power to the module. The alarm has a set of red/green LEDs to indicate alarm status.

A deadband adjustment allows a deadband of 0.5% to 100% of span to be set into the module. The deadband is symmetrical about the setpoint.

With the latching option, the alarm has no deadband control.  Once the limit has been reached, the alarm latches and power to the module must be momentarily interrupted to reset the alarm.

The module includes filtering and conditioning to reduce susceptibility to transients and noisy operation. They also provide a well regulated excitation voltage for the strain gauge and a high quality differential preamplifier to condition the low level output from the bridge.

Download MM1500 Brochure

Download MM1500 Manual

Features

	Provides a DPDT Relay Contact Closure at a Preset Strain Gauge Bridge Input
	0.5 mV/V to 1 V/V Input Span
	Standard Fail-safe Operation
	Red and Green LED Alarm Status Indicators
	Adjustable Deadband
	Latching Alarm Available
	Unlimited* Choice of Input Ranges
	Choice of Power Options
	10 + 5 Year Warranty

Typical Applications

Weight and pressure control, monitoring or warning.

Mounting

The module is designed to plug into a standard 11-pin relay socket.  Part number MP011 is a molded plastic socket suitable for mounting on a flat surface or 2 3/4 inch wide PVC snap track (TRK48).  Use CLP-1 hold-down clip if needed.  A Killark HK Series explosion-proof housing with dome and 11-pin sockets is available (HKB-HK2D-11).  A DIN rail mounted socket (P/N DMP011) is available for 35mm symmetrical rail.

Specifications