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Gas Leak and Flame Detectors, Analyzers, Alarm Devices and Calibration Gas



$3,108.42     Availability: 2 Weeks
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RC SYSTEMS 90-50 (1)

RC Systems ViewSmart 400 4-Channel Gas Detector Integral Alarm Controller with standard 2x 5A SPDT relays, with 6 x optional alarm relays, in standard CSA approved, Class I, Division 2 - NEMA 4X non-metallic enclosure. 120VAC or 24VDC power supply. Modbus interface. Optional 4 x 3-wire bridge or 4 x 4-20mA input channels board.

Part# with Options:        90-50
Price with Options:        3,108.42


Enclosure Options
(1) Enclosure Options for RC Systems ViewSmart 400
Serial Interface
(2) Serial Interface for RC Systems ViewSmart 200/400
(3) Input for RC Systems ViewSmart 400
(4) Output for RC Systems ViewSmart 400
Alarm Relays
(5) Alarm Relays for RC Systems ViewSmart 200/400
Power Supply
(6) Power Supply for RC Systems ViewSmart 200/400
Audible Alarm
(7) Audible Alarm for RC Systems ViewSmart 200/400
Visual Alarm
(8) Visual Alarm for RC Systems ViewSmart 200/400

Availability 2 Weeks  ]

The ST-90 Quad Channel Controller provides simultaneous display and alarm functions for four monitored variables. Easy to configure and user friendly, the ST-90 Quad can function as a critical alarm controller for toxic gases, combustible gases, vibration, tank levels and other process values.


  • Accepts inputs from up to four 4-20mA sensors transmitters for long distance interfacing. Generates 24VDC external device power for transmitters and other devices
  • Three adjustable independent alarm levels per channel. “Relay Acknowledge” feature allows silencing of external audible devices during existing alarm conditions.
  • Graphic LCD readout displays monitored data as bar graphs, engineering units, and 30 minute trends. Alarm LED’s flash when new and become steady after acknowledged.
  • Two standard SPDT common alarm relays are configurable for HIGH and WARN or FAULT alarm conditions. Optional discrete channel alarm relays are also available.
  • Modbus® master/slave RS-485 serial port interfaces to Modbus® devices such as PCs, PLCs, DCS, and other RC Systems controllers
  • Cal Mode offers pushbutton zero/span calibration for direct sensor interface applications.
  • Authorization mode allows locking of critical configuration variables.
  • Touch and magnetic keypad are standard for non-intrusive operation in potentially hazardous locations
  • Enclosures Include: Non- Metallic, Epoxy Coated Steel, 316 SS, NEMA 4X, NEMA 7 Explosion-Proof wall mount packaging options available
  • Certified to CSA C22.2 NO. 152 for combustible detection and Class I, Division 2, Groups A,B,C,D
  • Non-volatile memory retains all configuration data indefinitely.
  • RS-485 Modbus® master/slave port for up to 128, devices to be multidropped on a single data highway for interrogation by another Modbus® master
  • Six additional 5 amp SPDT discrete channel alarm relays available (two are standard)
  • 4-20mA outputs, event log, strobe lights and audible annunciators also available
  • 50 and 120 Watt 24VDC power supplies available

INPUTS Available inputs include 4-20mA with precision 100 ohm terminating resistor (0-2 Volt inputs may be accepted by removing the socketed terminating resistor) and bridge sensor inputs with adjustable sensor excitation and balance settings
STANDARD ALARM RELAYS (STANDARD) Two programmable, 5 amp 30VDC or 250VAC resistive Form C
ANALOG OUTPUTS (OPTIONAL) 10 bit 4-20mA output. Max load 800 ohms with nominal 24VDC power supply
DISCRETE ALARM RELAYS (OPTIONAL) Six 5 amp 30VDC or 250VAC resistive Form C
SERIAL PORT (OPTIONAL) Master/Slave RS-485 port equipped with Tx / Rx LED’s
Protocol is Modbus® RTU
DISPLAY 128 x 64 pixel graphic LCD with backlight displays bar graphs,trends, and engineering units. Six discrete LED’s indicate alarm status, CAL MODE, keypad activity
POWER SUPPLY 100-240 VAC / 10-30 VDC are standard primary power supplies
APPROVALS CSA C22.2 No 1010.1 and C22.2 No.152 for combustibles and ISA S82.02; UL 1604 / C22.2 No 213 (NEMA 4X = Division 2 Groups A,B,C,D, EN55011 and EN61000 (CE Mark)
90-12 = NEMA 7 Division 1 Group B,C,D

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RC Systems ViewSmart 200 2-Channel Gas Detector Integral Alarm Controller with standard 2x 5A SPDT relays, with 6 x optional alarm relays, in standard CSA approved, Class I, Division 2 - NEMA 4X non-metallic enclosure. 120VAC or 24VDC power supply. Modbus interface. Optional 2 x 3-wire bridge or 2 x 4-20mA input channels board.




RC Systems ViewSmart 6400 Digital Gas Detection CONTROLLER with 16, 32, 48 or 64 channels and LCD display of 320x240 pixels. Centralize display and alarm functions. User-friendly and visually powerful. UL and CSA approved for Class I, Division 2. NEMA 4X, NEMA 4X Stainless Steel, full 19" Rack mount and NEMA 7 wall-mount options. 5 amp resistive Form C relays. Optional 4-20mA inputs/outputs and RS-485 serial port.


> 4-CHANNEL :    1 Items found.


Prosense S-DP4 Gas Detector Controller, Alarm Panel for Up to 4 Analog 4-20 mA gas detectors. Monitors explosive (LEL) and toxic(ppm, %VOL), Alarm and Fault LED indicators for each detector and buzzer. Fault, Alarm1, Alarm2 and AUX Relays. Optional Modbus RS485 output and Alarm/Fault Relays for each channel. Polycarbonate Housing, IP66