Loop Alarms™ Process/Alarm Switches accept inputs from thermocouples (1290), RTDs (1490). SPDT relay outputs can be set for latching or non-latching, direct or reverse action and high or low function. Output behavior is easily programmable via switches. Mount in standard 11-pin sockets.

SPECIFICATIONS
Isolation: 1500 Volts RMS between input, outputs and power.
Power Supply: 85-265 VDC/VAC, 50-400 Hz.
Setpoints: Adjustable from 0-100% of span.
Deadband: Adjustable from 0.25-100% of span.
Drift: ±0.02% /°C typical, ±0.05% /°C maximum.
Ambient Operating Temperature: 32 to 131°F (0 to 55°C) non-condensing.
Input Impedance: (1290) 3 megohms, Current input=10 ohms.
Search Current (1490): Cu 10O = 5 mA. Plt 100O, Ni100O, Ni120O = 500µA. Plt 500O, NiFe 1000O, NiFe 2000O = 100 µA. Plt 1000O = 50µA.
Relay Output: SPDT, one set per setpoint, 5A @ 250 VAC resistive.
Latch Circuit Reset: Automatic at power up. Manual with reset switch.
Lead Compensation Error (1490): 0.02%/O.
Indicators: One dual color LED per setpoint; red = On, green = Off.
Open Thermocouple Protection (1290): Selectable upscale or down-scale.
Dimensions: Including socket pins, 2-3/8" W x 3-7/16" H x 1-3/4" D (60.3 W x 87.3 H x 44.4 D mm). ACCESSORIES -- See "Ordering" Page

481-0164 Socket.