Key Features

• Microprocessor based.
• Certified ATEX II 2 G Ex d IIC T6.
• Features Dual detectors and Temperature compensation.
• Outputs/Interface: 4-20mA Analogue Output, voltage-free relay contacts, and RS485 digital interface.
• Includes an Alphanumeric dot-matrix display which indicates gas concentration and instrument status.
• "One Person" calibration, configurable using magnetic switches without declassifying the hazardous area.

Applications

• Oil refineries.
• Chemical processing.
• Offshore platforms.
• Gas processing and pipelines.
• Oil and gas storage depots and Tank farms.
• Petrochemical industry.

Technical Specifications

Specification	Value
Full-Scale Range	0-100% LEL (Lower Explosive Limit)
ATEX Certification	II 2 G Ex d IIC T6 (Tamb -20 degrees C to +60 degrees C)
Supply Voltage	Nominal 24Vdc (operates from 20Vdc to 35Vdc)
Power Consumption	2W nominal, 2.3W maximum
Response Time (T90)	Typically less than 30 seconds
Analogue Output Load	500 Ohms maximum
Operating Temperature	-20 degrees C to +50 degrees C
Repeatability	+/- 2%
Recommended Calibration Interval	12 months (depending on application)
Enclosure Material	Aluminium pressure die-casting, chromated with blue epoxy finish

RS485 Digital Interface

• Operating Mode: Slave mode, half duplex, polled (Modbus protocol TBA).
• Maximum Units on Loop: 100.
• Relay Contacts: SPST, NO, 125V @ 0.5A (30V DC @ 1A) each for A1 & A2.