Mighty Module Model DIS972
AC Input Process Indicator

	Provides 4 1/2 Digit Display, Red or Green LEDs
	Display Calibrated in Engineering Units (V, mA, %, etc.)
	Proportional to AC Input
	Fully Isolated Output and/or 0, 1, or 2 Alarms (Optional)
	Alarm Setpoints Adjustable Without Disturbing Transmitter Output
	Fail-safe Alarm Operation
	LED Alarm Status Indicator
	Adjustable Deadband
	50 mV or 1 mA Minimum Input Span
	Unlimited* Choice of Input/Output Ranges
	Fits Standard 1/8 DIN Cutout
	Rated NEMA-4X, Splashproof and Corrosion Resistant When Properly Installed
	5 + 5 Year Warranty

Description

The DIS972 provides a display, optional isolated DC output voltage or current proportional to an AC input signal, and optional alarm setpoints. The units include filtering and conditioning to reduce susceptibility to transients and noisy operations. The digital display utilizes an auto-zero dual-slope integrating A/D converter for accuracy and stability.  All controls are accessible by removing a gasketed front access panel. The display controls are wide-ranging so that they can be calibrated to display engineering units. Decimal point selection is made with a switch, also accessible from the front.

A complete set of engineering unit labels is sent with each DIS.  Once the display has been adjusted to read the correct engineering units, the alarm setpoints can be adjusted without test equipment and without disturbing the output voltage or current.

Either setpoint may be displayed by use of the SP CAL switch.  Each setpoint has an LED to indicate alarm status. The alarms have adjustable deadbands. Terminations are made to a screw terminal connector on the rear of the case.

Typical Applications

AC process indication, control, monitoring of electrical devices such as motors, pumps or heaters, etc.

Mounting

The DIS is designed to be mounted from the front of a panel through a standard horizontal 3.62 x 1.77 inches (1/8 DIN) cutout. Two mounting cam-screws secure the DIS to the panel.

Specifications

INPUT RANGE Voltage   select any range from 0 to 250 V rms max     (min span 50 mV) Current   select any range between 0 to 5 A rms     (min span 1 mA, internal shunt) INPUT IMPEDANCE Voltage   200 kilohms Current Input 100µA 1 mA 10 mA 100 mA 1 A 5 A Shunt Value 1000 OHM 100 OHM 10 OHM 1 OHM 0.1 OHM 0.01 OHM OUTPUT RANGE Voltage   select any range between ±10 V     10 mA max load     (min span 0.2 V) Current   select any range from 0 to 20 mA max     24 V compliance**     (min span 1 mA) RELAY CONTACTS (spdt) Resistive Load:   5 A max, 150 W max,   240 VAC max, 30 VDC max Inductive Load:   1/8 HP max at 120/240 VAC SETPOINT each alarm 0 to 100% of span DEADBAND 0.25% to 100% of span RESPONSE TIME 1 sec typical ISOLATION Output/Input   >500 megohms Breakdown Voltage   >600 VAC rms

DISPLAY Digit Size   .56 inch LED, 4 1/2 digits, ±19999 Decimal Point   ±1.9.9.9.9 Control Range   Zero     ±19999   Span     min span 10     max span 20000 Display Update   3/sec ACCURACY ±0.1% of span LINEARITY Display   ±0.01% of span Output   ±0.025% of span OUTPUT RIPPLE <0.1% of span   (peak to peak) COMMON MODE REJECTION 120 dB, DC to 60 Hz OPERATING TEMPERATURE  14ºF to 140ºF -10ºC to 60ºC TEMPERATURE STABILITY ±(0.02% of span +30 µV)/ºC max POWER 115 VAC ±10%, 50/60 Hz   (4 W max) 230 VAC ±10%, 50/60 Hz   (4 W max)

* Within specified range limits.

** Compliance:  The sum of the voltage drops in the output loop cannot exceed 24 V at rated current 
    (1200 ohms at 20 mA).