Teledyne Detcon FP-624D Combustible Gas Sensor
Bulk Orders
Model FP-624D is a “Smart” gas detection sensor designed to detect and monitor combustible gas in air over the range of 0-100% LEL (lower explosive limit) using matched-pair catalytic bead technology.
Model FP-624D features Detcon’s MicroSafeTM intelligent electronics, nonintrusiveoperator interface and comprehensive fault diagnostics. The sensor transmitter features an advanced universal design that fits all existing Detcon matched-pair catalytic bead sensors dating back more than 20 years. The sensor assembly includes the detector in stainless steel housing, a base connector board, an explosion proof enclosure (available in aluminum or stainless steel), a plug-in control transmitter circuit, and a splashguard with integral cal port. The packaging is Explosion Proof (Class I, Division 1, Groups C & D).
Model FP-624D is equiped with a standard analog 4-20 mA current signal equivalent to the sensor range of detection, RS-485 serial communications port, 2 alarm relays and 1 fault relay, one-man remote calibration, self-adjusting zero and span, and LED indicators for fault, alarm, and calibration status. Detcon’s combustible gas sensor has an infinite shelf life and is supported by a 2-year warranty.
Order Guide Specify junction box options (below)
PN 966-524520-100 – Model FP-624D in Aluminum Junction Box
PN 966-52452B-100 – Model FP-624D-316SS in Stainless Steel Junction Box
APPLICATIONS:
- Oil and Gas Drilling Rigs
- Oil and Gas Production Sites
- Offshore Production Platforms
- FPSOs
- LNG/CNG Plants
- Refining and Petrochemical
- Pulp and Paper Mills
- Waste Water Treatment Plants
FEATURES:
- Performance Certified to CSA 152
- cCSAus for Class I, Division 1, Groups C & D
- Transmitter design fits all existing Detcon Catalytic Bead Sensors dating back 20 years
- Compatible with PLCs, SCADA, DCS, via 4-20 mA, and/or RS485, and/or alarm relays
- Sensor status and parameters accessible via RS-485 (Modbus™)
- Menu programmable relays standard (two alarms plus fault)
- Simple menu driven calibration – less than 3 minutes
- LED display and LED indicators for FAULT and CAL status
- Plug-in field-replaceable transmitter
- Long sensor life: averaging +5 years in harsh offshore drilling/production environments
- High resistance to poisons such as sulfides, chlorides, silicon-based contaminants etc.
- Low power consumption (less than 3.5 watts versus 8+ watts on competitive brands)
- Extensive Fault diagnostics
SYSTEM SPECIFICATIONS:
Sensor Type
Matched-pair catalytic bead
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
HART (optional)
3 Relays (alarm 1, alarm 2, & fault)
Contacts rated 5 amps
Electrical Classification
Explosion proof
CSAus
Class I, Division 1, Groups C, D (Tamb = -25°C to +40°C)
Class I, Zone 1, Group IIB
cCSA
Class I, Division 1, Groups C, D (Tamb = -40°C to +40°C)
Class I, Zone 1, Group IIB
Performance Approvals
CSA C22.2 #152
Safety Approvals
cCSAus
Ingress Protection
NEMA 4X, IP66
Warranty
Sensor: 2 year warranty
Transmitter: 2 year warranty
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature Range
-40°C to +40°C; -40°F to 104°F (CANADA)
-25°C to +40°C; -13°F to 104°F (USA)
Storage Temperature Range
-40°C to +75°C; -40°F to +167°F
Operating Humidity Range
0-99% RH non-condensing
Operating Pressure Range
Atmospheric ±10%
MECHANICAL SPECIFICATIONS:
Dimensions
10”H (including splashguard) x 6.1”W x 4.3”D
254mmH x 155mmW x 109mmD
Mounting holes (J-box) 5.5”; 140mm center to center
Weight
6 lbs; 2.72kg (w/aluminum j-box)
9 lbs; 4.08kg (w/stainless steel j-box)
ELECTRICAL SPECIFICATIONS:
Power Input
12 – 28 VDC
Power Consumption
Normal operation = 68mA (<1.7 watt)
Maximum = 87mA (2 watts)
RFI/EMI Protection
Complies with ISO 92.0.01
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
Status Indicators
4-digital LED display with gas concentration
Full-script menu prompts for AutoSpan,
Set-up Options, and Fault Reporting
4 LEDs for Alarm 1, Alarm 2, Fault, and Calibration
Relay Outputs
Alarm 1, Alarm 2, and Fault
5A @ 250VAC
5A @ 30VDC
Faults Monitored
Loop, Input 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
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