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Fixed Gas Detection Controller WX 4

Fixed Gas Detection Controller WX 4

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Азербайджан, Баку
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  • 4-channel controller

  • 4-20 mA or Bridge sensor inputs

  • Programmable relays

  • RS-232/485 Modbus

  • Wireless options

  • Graphical display

  • Alarm strobe and horns optional



The WX 4 controller is designed to offer reliability and functionality.

  • Security mode allows for lockout of critical parameters

  • NEMA 4X/7 Enclosures

  • Non-volatile memory retains all configuration data

  • CSA Div 2 A,B,C,D and C22.2 No. 152 approved


The WX 4 controller can be configured in multiple ways to meet your application needs. It offers analog, digital, and wireless capability and comes standard with two programmable alarm relays.

  • Accepts four 4-20mA, bridge, or wireless inputs

  • Provides 4-20mA, ModBus RTU, or wireless outputs

  • Wireless Communication (opt)

  • Magnetic and Tripod mounting options available

  • Multiple enclosure options

  • Multiple power supply options including solar

  • Two programmable SPDT alarm relays and a common horn driver standard

  • Six programmable alarm relays (opt)

Easy to Use

The WX 4 is designed to offer the user convenient features and ease of use.

  • Touch Key and Non-Intrusive (magnetic) Operation

  • Graphic Display

  • Visual Alarm LEDs

  • Built-In Piezo Siren


  • Oil and Gas Industry

  • Offshore Drilling

  • Utilities and Power

  • Petrochemical Industry

  • Municipal Water and Waste Treatment

  • Food and Beverage Production


Wireless communication is becoming increasingly popular in gas detection, and it is sometimes the only way to ensure safety in existing infrastructure or remote locations. The WX 4 can be configured to accept wireless inputs from an OLCT 200 transmitter or communicate wirelessly to a compatible ModBus master device. Additionally, the WX 4's wireless option offers the following features:

  • 900MHz or 2.4GHz FHSS

  • 10mW - 1W Adjustable Tx Power

  • CSA Div 1 and DIV 2 Antennas

  • 256-bit Encryption

  • Indoor Range up to 3000' (900 meters)

  • Outdoor Range up to 10 miles (16 km)

  • -100dBm Receiver Sensitivity

  • Battery & Solar Powered Options



LCD (128 x 64 pixel) with backlighting


Six discrete LEDs for three common alarm levels, fault, calibration mode, and keypad function

Interface Buttons:

Five buttons - dual touch key and magnetic (non-intrusive)


• Four channels (either 4x 4-20mA or 4x bridge sensor)
• 4-20mA inputs are into 100 ohm impedance and include +power for each channel for routing power to 2-wire or 3-wire transmitters
• Bridge sensor inputs allow for adjustable sensor excitation and balance settings
• Up to 4 channels can be received wirelessly from an OLCT 200 transmitter configured with a wireless package


Opt. 4-channel 4-20mA output (max load 800 ohms @24VDC)


• Std. Two programmable 5amp, 30VDC or 250VAC resistive Form C
• Opt. Six programmable 5amp, 30VDC or 250VAC resistive Form C
• All relays are programmable and allow for voting based on the alarm state of each of the four channels


RS-232 or RS-485 ModBus RTU master or slave (9600 baud)

Power supply:

Std. 100-240 VAC / 24VAC 10W
Opt. 100-240 VAC / 24VAC 50W
Opt. 100-240 VAC / 24VAC 120W
Opt. Solar / Battery Power (see factory for availability)


• 900MHz or 2.4GHz FHSS (Frequency Hopping Spread Spectrum)
• 256-bit AES Encryption (meets FIPS-197)
• 10mW - 1W adjustable transmit power (900Mhz); 120mW (2.4GHz)


Non-Metallic Wall Mount:

NEMA 4X / IP66; for Div.2 Groups A, B, C, D
4.10" (358mm) H x 11.25" (286mm) W x 7.25" (184mm) D

Painted Steel Wall Mount:

NEMA 4 / IP66; for Div.2 Groups A, B, C, D
13.65" (347mm) H x 9.84" (504mm) W x 6.20" (158mm) D

Stainless Steel Wall Mount:

NEMA 4X / IP66; for Div.2 Groups A, B, C, D
13.65" (347mm) H x 9.84" (504mm) W x 6.20" (158mm) D

Explosion-Proof Aluminum Wall Mount:

NEMA 4/7, for Div.1 & Div. 2 Groups B, C, D
14.25" (362mm) H x 13.00" (330mm) W x 6.25" (159mm) D


Operating Temp:

-25°C to 60°C


0% - 90% Relative Humidity; Non-Condensing


CSA C22.2 No 152 for combustibles
CSA C22.2 No 1010.1 and ISA S82.02
UL 1604 / CSA C22.2 No 213 (Div 2 Groups A,B, C, D)
EN55011 and EN61000

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Fixed Gas Detection Controller WX 4
Fixed Gas Detection Controller WX 4
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