AC-7400 Analog Controller


The AC-7400 Controller is a versatile wired monitor that comes standard with DC power and can be configured with AC power supply. Four relays can be individually set up to the full scale of the channel and may be set up to either latching or non-latching. Supports 12 individual 4-20 mA wired sensor assemblies that can monitor and display a variety of toxic gases, leading to safer working environment.

The AC-7400 controller represents the latest leading edge technology in fixed gas detection today.


12 Channel Wired Monitor That Supports Any 4-20 mA Wired Sensor
12 to 35 VDC Operating Voltage with an Optional AC Power Supply
Operating Temperature Range of -40ºC to +70ºC
Graphical LCD with LED Backlight
5 Push-Button Interface (ADD, MENU, SUB, SCAN/ HOLD and RESET/ESC)
4 Individually Configurable Alarm Set-Points – Four Front Panel ALARM LED Indicators (Red); 4 Dry- Contact Relays (4 Amps Maximum per Relay)
Status LEDs for Power and Fault – Multi-Color Status Light; Amber Fault LED for Indicating System Faults
Output options: Wet contact DC fault terminal, relay 4 can optionally be configured as a fault relay, RS-485 Modbus
NEMA-4X Standard fiberglass enclosure with clear window
1-Year limited hardware warranty


Petrochemical plants
Water & wastewater treatment plants
Pulp & paper mills
Manufacturing facilities
Semiconductor plants
Chemical plants



General Specifications

Product Specifications
Product Type12 Channel wired gas monitor controller
Operating Voltage12V to 35V DC or 120V AC
Current Draw300 mA maximum (8 channel) 325 mA maximum (12 channel)
ProtectionPower electromagnetic interference (EMI) filter 4-20 mA surge suppression RS-485 and RS-232 surge suppression
Display Screen160 x 104 Resolution graphical LCD screen transflective (sunlight readable) with LED back light
Interface5 Push-buttons (MENU, ADD, SUB, SCAN/HOLD and RESET/ESC)
Product Mounting4 Mounting feet, 6 in. W x 12-1/4 in. T (included) maximum mounting bolt/screw size of 5/16 in. (8mm) diameter
Temperature Range-40°C to +70°C
Product CompatabilityM2A, S2, GD-70D, T2A T3A, VOC Pro transmitters
Wired (Analog) Input12 analog inputs, 4-20mA
Relays• 4 Dry-contact relays with 4 amp replaceable fuses • Fault terminal • Optional to disable alarm relay • Latching and non-latching relay settings
Enclosure MaterialsNEMA-4X enclosure with clear window
Product Dimensions12 in, L x 10 in. W x 6 in. H (Max. dimensions with attachments)
Total Weight12.15 lbs
Harware Warranty1-Year limited

Order Form