The SEC 1500 and 2000 are digital gas detectors, that are designed to detect one of a number of gases, display the concentration of that particular gas and provide an alarm when gas concentration reaches a preset level. These detectors will operate as a stand alone gas detector with its own relay output and LED display. An industry standard 4-20 mA output enables the detector to be connected to an analog system, such as PLC, DCS and TMR systems.
The operating parameters (relay action, alarm set values, sensor configuration, etc.) can be viewed or changed using the SEC 2500 Hand Held Programmer or SEC Supervision Plus software. The 2500 can communicate anywhere on the network with any detector using either an infrared link, an RS-485 data highway or by plugging directly into any detector.
An RS-485 digital output enables the detector to communicate to a PC running Supervision Plus software. The detector network is formed by connecting a single twisted shielded pair of cable wires, reducing cabling and installation costs.
The SEC 1500 and 2000 retain operating parameters and calibration settings when powered down. An on board microprocessor provides continuous self diagnostics and identifies problems using fault codes. Four operation 8 amp SPDT relays respond to Low, Mid and High gas alarms as well as any fault conditions.
Features
The SEC 1500 is designed for non-hazardous environments
The SEC 2000 is designed for hazardous environments
Low cost installation
Over 20 different gases can be detected
CSA/NRTL approved
Combustible detector is UL approved
Industry standard 4-20 mA output
RS-485 digital output
User friendly, one person calibration
Provides continuous self diagnostics
Relays can be set to turn on alarms, shut doors, turn on fans, etc.
Specifications
Specification
SEC 2000
SEC 1500
Detection Method
Combustible Gas: Catalytic-LEL, Solid State-ppm
Combustible Gas: Catalytic-LEL, Solid State-ppm
Toxic Gases: Electrochemical, Solid State
Toxic Gases: Electrochemical, Solid State
Oxygen: Galvanic
Oxygen: Galvanic
Sampling Method
Diffusion, optional sample draw pump
Diffusion, optional sample draw pump
Alarms
Visual indication and relay contacts for low, mid, high and fault
Visual indication and relay contacts for low, mid, high and fault
Output (Digital)
RS-485 LAN
RS-485 LAN
Output (Analog)
4-20 mA, max 1000 ohm load at 24 VDC supply voltage
4-20 mA, max 1000 ohm load at 24 VDC supply voltage
Relay, Type & Rating
8 amps @ 250 VAC, 8 amps @ 30 VDC
8 amps @ 250 VAC, 8 amps @ 30 VDC
Relay Operation
Selectable latching or non-latching, selectable normally energized or normally de-energized (except fault), selectable alarm relay off delays, manual relay control
Selectable latching or non-latching, selectable normally energized or normally de-energized (except fault), selectable alarm relay off delays, manual relay control
Operating Voltage
24 VDC, operating range 18 to 32 VDC (measured at detector head)
24 VDC, operating range 18 to 32 VDC (measured at detector head
AFC International, Inc.
PO Box 894, DeMotte, IN 46310
715 SW Almond St, Ste C, DeMotte, IN 46310
800-952-3293 219-987-6825 Fax 219-987-6826 eMail: sales@afcintl.com
