System Specifications |
Sensor Type | Continuous diffusion/adsorption
Matched-pair catalytic bead detector
Plug-in field replaceable |
Sensor Life | 3 to 5 years typical |
Measurement Range | 0-100% LEL (lower explosive limit) |
Accuracy/Repeatability | ±3% 0-50% LEL; ±5% 50-100% LEL |
Response/Clearing Time | T50 <10 seconds; T90 <30 seconds |
Zero Drift | <5% per year |
Outputs | Linear 4-20 mA DC
RS-485 MODBUS-RTU |
Electrical Classification | Explosion proof
CSA and US (NRTL)
Class I, Division 1, Groups B, C, D (Tamb = -40°C to +75°C)
Class I, Zone 1, Group IIB+H2
ATEX
II 2 G Exd IIB + H2 T4 Gb (Tamb = -40°C to +75°C) |
Ingress Protection | NEMA 4X, IP66 |
Safety Approvals | CCSAUS Performance to ISA 12.13.01-2000 and CSA 22.2 #152
ATEX
CE Marking
SIL2 Certified to IEC 61508 |
Warranty | Plug-in detector - 2 years
Transmitter - 2 Years |
Environmental Specifications |
Operating Temperature Range | -40°F to +167°F; -40°C to +75°C |
Storage Temperature Range | -40°F to +167°F; -40°C to +75°C |
Operating Humidity Range | 0-99% RH non-condensing |
Mechanical Specifications |
Dimensions | 7"H x 2.2" Dia.; 178mmH x 65mm Dia. (sensor assembly only)
11"H x 6.1"W x 3.75"D; 280mmH x 155mmW x 96mmD (with junction box)
Mounting holes (J-box) 5.5"; 140mm center to center |
Weight | 2 lbs; 0.907kg (sensor only)
6 lbs; 2.72kg (w/aluminum j-box)
9 lbs; 4.08kg (w/stainless steel j-box) |
Electrical Specifications |
Power Input | 11-30 VDC |
Power Consumption | Normal operation = 68mA (<1.7 watt)
Maximum = 85mA (2 watts) |
Inrush Current | 1.0A @ 24V |
RFI/EMI Protection | Complies with EN61000 |
Analog Output | Linear 4-20mA DC (1,000 ohms max loop load @ 24VDC)
0mA: All Fault Diagnostics
2mA: In-Calibration
4-20mA: 0-100% full-scale
22mA: Over-range condition |
Serial RS-485 Output | RS-485 ModbusTM RTU |
Baud Rate | 9600 BPS (9600,N,8,1 Half Duplex) |
Status Indicators | 4-digit LED display with gas concentration
Full-script menu prompts for AutoSpan, Set-up Options, and Fault Reporting |
Faults Monitored | Operating Temperature, Loop, Input Voltage,
Bridge Voltage, Zero, Sensor, Processor, Memory, Calibration |
Cable Requirements | Power/Analog
3-wire shielded cable
Maximum distance is 13,300 feet with 14 AWG
Serial Output
2-wire twisted-pair shielded cable specifically for use with RS-485 installations
Maximum distance is 4,000 feet to last sensor |
I/O Protection | Over-voltage, Miswiring, EMI/RFI Immunity |