The only truly selective wall-mounted benzene monitor
• Fast and accurate detection of benzene down to 0.1 ppm
• Minute by minute sampling providing continuous real-time data
• Robust separation method ensures benzene specific readings
•I nternally regulated heating for stable operation at extreme temperatures
Best available photoionization (PID) detection
• PID independently verified as best performing on the market
• In-built humidity resistance with no need to compensate
• Anti-contamination design for extended field operation
• 2 year warranty when instrument registered online
Safety
• Clear display & visual alarms for indication of benzene levels
• Two user-definable independent alarm levels including optional real-time STEL calculation
• Two relay outputs provide an immediate warning alarm
• Meets ATEX & IECE, UL and CSA standards
Ease of Use & Service
• Modular design for ease of installation and servicing
• Service-free six months operation
• Simple two button interface for menu navigation
• No consumables
Applications Include
• Oil & Gas
• Petrochemical
• Chemical
• Health & Safety
• Offshore
Technical Specification
Sensor Type
• PID, 10.6 eV lamp coupledwith selective filtering
Selectivity
• Benzene specific within typicalpetrochemical matrix
Range
• 0 - 20 ppm
Measuring Frequency
• One minute
Lower Limit Of Detection
• 0.1 ppm
Accuracy
• 0.05 ppm or 10%, whichever is greater
Temperature Stability
• Internally heated
Sample Flow
• 200 ml/min
Display
Display
• Graphical BW LCD 64 x 128 pixels with back light
• Bright LEDs for normal operation, fault and alarm
• Two magnetic switches for menu operation
Hazardous Area Safety Approvals
• ATEX/IECEx: II 2G Ex d II B+H2 T4 Gb (-20 oC to +55 oC)
Ingress Protection Rating
• Designed to IP65 (cable gland dependant)
Humidity
• 0 - 100 % RH
Minimum Service Period
• Selective filter six months
• PID lamp one year
Cable Entry
• Two 3/4 NPT gland threads
Power
• Vin (nom) 24 V DC @ 3.2 A (recommended)
• Vin (max) 32 V DC @ 2.4 A
• Vin (min) 19 V DC @ 4.0 A
Communication
• Isolated 4-20 mA output
• Isolated RS 485 Modbus (simplex/half duplex or fully duplex)
• USB when lid removed with PC software
Data Storage
• On board MMC, minimum of six months
Relay Output
• Two isolated outputs, voltage free, 24 V DC @ 1.25 A
Weight And Dimensions
• 15 kg (33 lbs)
• 219 x 219 x 172 mm (8.6 x 8.6 x 6.8” approx.)
Gas Sample Line
• 10 m max length, PTFE, 6 mm OD, 4 mm ID
PID Response Factors
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