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DGI-TT7 Electrochemical Gas Detector

Brand: Detcon Inc

The MultiTox DGI-TT7-E gas detectors employ a wide array of sensor types. 

The device has been designed for ease of operation and maintenance. 

The DGI-TT7-E are constructed from a common housing and electronics with the detection properties being determined by the type of sensor (cartridge) used. 

A wide range of cells are available, including hydrogen sulfide, ammonia and carbon monoxide to name a few. The cells are intrinsically safe protected, and may be replace with the detector powered. 

The intelligent, microprocessor driven unit is fully configurable using a wireless handheld terminal (TLU) or optionally via HART giving true flexibility to the installer. 

Parameters such as relay operation and alarm levels are all set via the TLU, hazardous area approved handheld unit. 

The unit may be interfaced directly with a wide range of panels, controllers and PLC’s etc. 

The device offers HART Protocol 7th edition output as an option.

Specifications

Brand

Approvals & Certifications

  • ATEX - II 2 G Ex dia IIC T6 Gb (-40° to 65° C)
  • IEC Ex dia IIC T6 Gb, LCl 12
  • ISO 9001: 2008

Communication

  • HART

Consumption

  • 0.7 W Normal
  • 4.5 W when Heating

Display

  • 4-Digit LED with Automatic Intensity Adjustment

Electrical Connectors

  • Shielded Cable

Enclosure, Body Material

  • 316L Stainless Steel

Environmental Protection

  • IP66

Humidity

  • 0 to 95 % Relative Humidity, Non-Condensing

Load Impedance

  • 700 ohms

Measuring Range

  • 0 to 10 ppm - Cl2
  • 0 to 10,000 ppm - H₂
  • 0 to 100 ppm - H₂S, NH₃, CO, NO, SO₂, HCl
  • 0 to 1000 ppm - NH₃, CO, H₂,
  • 0 to 20 ppm - H₂S, NO₂, SO₂, Cl2,
  • 0 to 2000 ppm - H₂
  • 0 to 25 ppm - O₂
  • 0 to 5 ppm - O₂
  • 0 to 50 ppm - H₂S, NH₃, Cl2, HCl, HCN

Media

  • Gas

Operating Temperature

  • -20° to 50° C (-4° to 122° F)

Output

  • 4-20 mA

Power Requirement

  • 18-28 Vdc

Relay Output

  • 1 A / 30 V

Response Time

  • < 20 to < 160 seconds

RFI/EMI Protection

  • Complies with EN 50270

Span & Zero Effect

  • < 3 %

Storage Temperature

  • -40° to 70° C (-40° to 158° F)

Temperature Range

  • 0° to 20° C (32° to 70° F) - Cartridge/Cell

  • Chemical Plants
  • Offshore Drilling & Production Platforms
  • Processing & Storage Plants
  • Refineries

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