Meggitt Sensing Systems

Meggitt Sensing Systems

Hazardous area sensors

The following products or series are intrinsically safe or have an intrinsically safe option.

Vibration transmitters

Low-power, low-voltage

LPA100T low-power, low-voltage sensor
Built-in temperature sensor

Standard certified sensors

376
376E/CC726E intrinsically safe accelerometer and charge amplifier system
High temperature vibration sensor
712E/CC712E
Full size performance in a compact sensor
766 certified high frequency sensors
Broad frequency response
780A-IS compact accelerometer
Certified intrinsically safe sensor
786A-M12-IS certified accelerometer with M12-style connector
General purpose vibration sensor with M12 connector
376E/CC726E Intrinsically safe accelerometer and charge amplifier system
Intrinsically safe accelerometer and charge amplifier system
786A-D2 general purpose accelerometer
Non-incendive certified

4-20 mA certified sensors

Communication modules

The following products or series are intrinsically safe or have an intrinsically safe option.

376
376E/CC726E Intrinsically safe accelerometer and charge amplifier system
Intrinsically safe accelerometer and charge amplifier system
376E/CC726E intrinsically safe accelerometer and charge amplifier system
High temperature vibration sensor
712E/CC712E
Full size performance in a compact sensor
766 certified high frequency sensors
Broad frequency response
780A compact accelerometer
Full size performance in a compact sensor
780A-IS compact accelerometer
Certified intrinsically safe sensor
786-500-D2 high output accelerometer
Low frequency Class I Division 2 accelerometer
786-500-IS certifed high output accelerometer
Low frequency Class I Div 1 vibration sensor
786A standard accelerometer
General purpose vibration sensor
786A-D2 general purpose accelerometer
Non-incendive certified
786A-M12 accelerometer with M12-style connector
General purpose vibration sensor with M12 connector
786A-M12-IS certified accelerometer with M12-style connector
General purpose vibration sensor with M12 connector
786F accelerometer with integral cable
General purpose vibration sensor
786T low cost accelerometer with internal temperature sensor
787A standard accelerometer, side exit
General purpose vibration sensor
793 premium accelerometer
General purpose vibration sensor
793L premium accelerometer
Low frequency vibration sensor
793V/793V-5 velocity output sensor
Piezovelocity transducers (PVT)
797 premium accelerometer, side exit
General purpose vibration sensor
797L premium accelerometer, side exit
Low frequency vibration sensor
797V premium side exit velocity sensor
Piezovelocity transducer (PVT)
893V general purpose velocity output sensor
Piezovelocity transducer (PVT)
LPA100T low-power, low-voltage sensor
Built-in temperature sensor
PC420A-EX series
PC420A-IS series
PC420V-EX series
PC420V-IS series
PC421A-IS series
PC421V-IS series
PC423A-IS series
PC423V-IS series

 


UNITED STATES — FACTORY MUTUAL (FM)
Division 1, Classes I, II, III, Groups A, B, C, D, E, F, and G

In the United States, Article 500 of the National Electrical Code (NFPA 70) defines the following divisions:

Division 1 Hazardous concentrations of flammable gases, vapors—or combustible dusts in suspension—continuously, intermittently, or periodically present under normal conditions.

Divsion 2 Volatile flammable liquids or gases are present, but are normally confined within closed containers or the flammable vapors are normally prevented by positive mechanical ventilation and from which they can escape only under abnormal operating or fault conditions. Combustible dusts are not normally, nor likely, to be thrown into suspension.

Following are typical flammable gases, vapors, mists and ignitable dusts, fibers and filings. They are classified according to the spark energy required to ignite the most easily ignitable mixture with air.

  • Class I
    • Group A Acetylene
    • Group B Hydrogen
    • Group C Ethylene
    • Group D Propane
  • Class II
    • Group E Conductive Dust (metal dusts)
    • Group F Carbonaceous Dust (coal dusts)
    • Group G Non-Conductive Dust (grain dusts)
  • Class III
    • Fibers
    • Flyings (material larger than dust that are not normally in suspension in air)

CANADA — CANADIAN STANDARDS ASSOCIATION (CSA)
Division 1, Class I, Groups A, B, C, and D

In Canada, Section 18 of the Canadian Electrical (Code C22.1), the standards are similar in concept to the United States standards although different procedures are used to match a barrier to a hazardous area instrument.


UNITED KINGDOM & EUROPE
Zones 0-2, Groups I, IIA, IIB, IIC

In Europe, CENELEC standard EN 50 014 defines the following zones:

  • Zone 0 Hazardous gas atmosphere is continuously present or is present for long periods of time (ia apparatus only)
  • Zone 1 Hazardous gas atmosphere is likely to occur during normal operation (ia or ib apparatus only)
  • Zone 2 Hazardous gas atmosphere is not likely to occur during normal operatings, or will only occur for short periods of time (ia or ib apparatus only)

Following are typical flammable gases, vapors, and mists. They are classified according to the spark energy required to ignite the most easily ignitable mixture with air.

  • Group IIC Acetylene, Hydrogen
  • Group IIA Propane
  • Group IIB Ethylene
  • Group I Methane (firedamp)

AUSTRALIA—SAFETY IN MINE TESTING & RESEARCH STATION
Zones 0-2, Groups I, IIA, IIB, IIC

In Australia, the standards are similar in concept to the European CENELEC standard EN 50 014, which defines the following zones:

  • Zone 0 Hazardous gas atmosphere is continuously present or is present for long periods of time (ia apparatus only)
  • Zone 1 Hazardous gas atmosphere is likely to occur during normal operation (ia or ib apparatus only)
  • Zone 2 Hazardous gas atmosphere is not likely to occur during normal operatings, or will only occur for short periods of time (ia or ib apparatus only)

Following are typical flammable gases, vapors, and mists. They are classified according to the spark energy required to ignite the most easily ignitable mixture with air.

  • Group IIC Acetylene, Hydrogen Group IIA Propane
  • Group IIB Ethylene Group I Methane (firedamp)

FRANCE—INSTITUT NATIONAL DE L’ENVIRONNEMENT INDUSTRIEL ET DES RISQUES
Zones 0-2, Groups I, IIA, IIB, IIC

In Europe, CENELEC standard EN 50 014 defines the following zones:

  • Zone 0 Hazardous gas atmosphere is continuously present or is present for long periods of time (ia apparatus only)
  • Zone 1 Hazardous gas atmosphere is likely to occur during normal operation (ia or ib apparatus only)
  • Zone 2 Hazardous gas atmosphere is not likely to occur during normal operatings, or will only occur for short periods of time (ia or ib apparatus only)

Following are typical flammable gases, vapors, and mists. They are classified according to the spark energy required to ignite the most easily ignitable mixture with air.

  • Group IIC Acetylene, Hydrogen Group IIA Propane
  • Group IIB Ethylene Group I Methane (firedamp)

 

 

Meggitt Sensing Systems, 20511 Seneca Meadows Parkway Germantown, MD 20876
1-800-WILCOXON (1-800-945-2696)    T: 301-330-8811    F: 301-330-8873
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