Model Number: 253-A001 RD-1400Ex Key Specifications/Special Features: Characteristics:Integration structure of explosion-proof, measured result can be directly worked out in azardous locationsExplosion-proof grade: Ex d II CT6Performance is stable and reliable: As detecting element is coated with glass film, it has strong shock resistance, good corrosion resistance, durable, small instrument drift small, stable and reliableComputerization: The instrument with single chip microcomputer has 4-20mA isolated DC linear standardOutput signal (can be set, to be specified when order), digital display, alarm function, a communication interface and moreNormal working conditions:

Environment temperatures: 0~40℃

The relative humidity: ≤ 80%

Atmospheric pressure: the average local atmospheric pressure (70-106kPa)

Radiation of the sun: no direct irradiation

Air velocity: less than 0.5m/s

Work location: the vertical position of ±5°

Vibration: only allow slight vibration or negligible vibration

Electric source: 220V ±22 V, 50Hz +/-1Hz

Gas sample temperatures: 5-40℃

Gas sample flow: 0.015m³/h (250mL/min)

Grounding: special grounding (earthing resistance should be less than 5 Ohms)

Output signal: 4-20mA isolated DC (load resistance is ≤ 550 Ω)

Alarm output: the low limit alarm and the high limit alarm can be set freely in the range of instrument

Alarm error is not more than the basic error

Alarm output contact capacity is 250V AC/1A or 30V DC/1A

Electromagnetic interference: no strong electromagnetic interference

Main technical parameters

• Explosion-proof grade: Exd II CT6
• The measuring range, minimum scale and basic error as shown in table 1
• Stability:
  • Zero drift: ≤basic error/24h
  • Span drift: ≤ basic error/24h
• Repeatability error: ≤1/2 basic error
• Communication interface: RS 485 (optional)
• Complete set of gas analyzer: one complete set of gas analyzer consists of analyzer, preprocess device and mounting support
• Normally we supply analyzer and preprocess device only, if buyer needs mounting support, please make special enquiry