Acrylonitrile gas detector – LEL sensor transmitter, flameproof, ATEX, Zone 1, 2

Acrylonitrile gas detector Smart S series, monitoring LEL concentration in ambient air or in ducts. It is flameproof or explosion proof sensor transmitter with ATEX and safety integrity level SIL 2 certified for hazardous area Zone 1, 2 installation. It is ideal for installation in solvent warehouse, paint booth, fertilizer unit, chemical plants, refinery, manufacturing units and so on

It is available with LCD Display, on-board relay contacts, flashing alarm LEDs, auto diagnostic watch dog, non-intrusive calibration, with industry standard linear analog output.

Description

Acrylonitrile gas LEL detector – flameproof sensor transmitter – ATEX, SIL 2, Zone 1, 2

online, continuous detection and monitoring of LEL and flammable monitoring of acrylonitrile gas / vapour in air or gas stream ducts, flameproof / explosion proof certified Zone 1, 2 – ATEX, SIL 2, with / without display, contact relays, flashing alarm LEDs, RS485 serial interface with Modbus RTU protocol

Model: S2XX7

Acrylonitrile is a colorless, liquid, man-made chemical with a sharp, onion- or garlic-like odor. It can be dissolved in water and evaporates quickly. It is a highly poisonous compound used widely in the manufacturing plastics, adhesives , synthetic rubber, and acrylic fibers.

Acute (short-term) exposure of workers to acrylonitrile has been observed to cause mucous membrane irritation, headaches, dizziness, and nausea.

SMART S series acrylonitrile gas sensor transmitter is highly robust, industrial grade, flameproof or explosion proof instrument for LEL concentration detection. The instrument can be installed for flammability level or LEL detection of acrylonitrile vapour or leakage in all industrial and commercial area eg. chemical plant, solvent manufacturing unit, polymer industry, manufacturing plants, warehouse etc

The detector can be installed at walls, surfaces or in ducts for monitoring in gas or air sample. It is ATEX EEx’d’ certified with SIL 2 safety integrity level for hazardous area installation Zone 1 and 2.

The sensor transmitter offers linear, proportional analog output in industry standard current signals, over measuring range of 0 ~ 100% LEL (lower explosive limit). The detector works on highly sensitive catalytic bead based pellistor sensor cell, with low response time. It has unique feature of auto diagnostic watch dog with zero point tracking feature. Due to its 10-bit microprocessor based control unit, it offer high accuracy over long term. The detector is also equipped with sintered filter with flashback arrestor for enhanced safety.

Acrylonitrile gas LEL sensor transmitter - detector ATEX, SIL 2, Zone 1,2
Acrylonitrile gas LEL sensor transmitter – detector ATEX, SIL 2, Zone 1,2

Key Features:

  • Catalytic bead based Pellistor sensor cell with low flash energy
  • 10-bit microprocessor control unit
  • Non-intrusive one-man calibration via hall effect switches
  • ATEX certified explosion proof / flameproof, suitable for Zone 1, 2 gas explosion installation
  • Linear, proportional analog industry standard current output
  • Continuous system self-diagnosis with watch dog
  • Flashback arrestor with sintered filter
  • Auto Zero point tracking to zero point compensation
  • SIL 2 HW TUV certified
  • RS485 serial interface with Modbus RTU communication (optional)
  • 1 or 3 relay output module (optional)
  • System and alarm LED indicators (optional)
  • Modbus RTU communication over RS485 serial interface

 

Acrylonitrile detector for explosion proof area - LEL detection, ATEX, SIL 2 certified for Zone 1, 2
Acrylonitrile detector for explosion proof area – LEL detection, ATEX, SIL 2 certified for Zone 1, 2

Technical Specifications:

  • Measuring Parameters: LEL or flammable concentration of acrylonitrile gas (3.00% v/v)
  • Sensor Technology: Catalytic bead based pellistor sensor cell
  • Measuring range: 0 ~ 100 % LEL
  • Response time (t90): < 30 sec
  • Control unit: 10 bit microprocessor based
  • Warm up time: < 5 mins
  • Auto zero point tracking for drift compensation
  • Power supply: 24V DC
  • Ingress protection: IP65
  • Enclosure: Stainless steel (for sensor cell), anti-static epoxy coated metal alloy (for transmitter)
  • Output: linear, proportional 4-20mA
  • Mounting: wall, duct, pipeline
  • Safety integrity level: SIL 2
  • ATEX marking:
    • CE 722 Ex II 2G EEx d IIC T6
    • CE 722 Ex II 3G EEx nA IIC T6
  • Optional: LCD Display, alarm LEDs, potential free relay contacts
  • Hazardous area: Zone 1, 2

Application:

  • Polymer, polyvinyl manufacturing
  • Manufacturing plants
  • Chemical plants
  • Petrochemical units, polymer
  • Warehouse, chemical storage
  • Water treatment