4 Gas Meter Detector | Wall Mount | USA NIST Calibration

Brand: FORENSICS DETECTORS
Model: FD-60-4GAS
User Manual (PDF): EN | DE | FR | ES | IT |
Application Guide: Blog explanation

Features:

• 🚀 INDUSTRIAL: High-quality 4 gas sensors for detecting oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S), and combustibles (LEL). Comes factory-calibrated.
• 🌎 USE: Alarm output to 2 x relay alarm-triggered switches to control fans or ventilation units.
• 🎆 FEATURES: Large LED alarm and buzzer.
• 💪 ROBUST: Dust-proof, water-resistant, and flameproof. 
• 🕵️ TRUSTWORTHY: 1-year limited warranty. Arrives with a signed and dated calibration certificate.  

Details: This is our heavy-duty 4-gas detector for continuous detection to ensure wellness and safety in confined work spaces, industrial operations, oil and gas, and manufacturing type of environments.  Also useful in water purification, treatment facilities, chemical plants, high-technology manufacturing, silos, underground operations, maritime, tanks, and other confined spaces where ventilation can be limited. This unit tracks the traditional 4 gases comprising O2, CO, EX LEL, and H2S, which are required for the paramount safety of personnel. The 4-gas meter comes with high and low alarm settings that simultaneously trigger relays to control and trigger power equipment such as fan control, ventilation, or additional alarms, sirens, or control panel switching. Additional features include a remote control up to 8 meters and relay alarm-triggered switches to control fans, pumps, or additional alarms. For those that just require a more basic 4-gas meter without the advanced multigas detector function, we recommend our 4-gas meter FD-4A. For those requiring a handheld 4-gas meter with a built-in pump, we recommend our FD-600-4GAS multigas detector. 

Included: 4-gas fixed wall-mount detector, user manual, remote control with battery, hex key to remove the cover, 24V power adapter to plug into a 110V outlet, and wiring. Arrives with a certified calibration certificate. 

Calibration Options:  
1. Professional Calibration: Serviced by Forensics
2. Calibration Guide: Calibrate It Yourself

Calibration Kit (needed to calibrate yourself - sold separately):
Calibration Gas (Multigas)
Calibration Gas Regulator (C10)
Calibration Cap
4 Gas Bump Gas
Tubing

Accessories & Parts (sold separately):
Gas Sensor Replacement (CO)
Gas Sensor Replacement (H2S)
Gas Sensor Replacement (O2)
Gas Sensor Replacement (EX)
Air Sampling Pump Kit
Alarm Extension Fixture

Specifications

Combustible Gas (LEL) Detection: 0 - 100% with 1% resolution
Oxygen (O2) Detection: 0 - 30% with 0.1% resolution
Carbon Monoxide (CO) Detection: 0 - 999 ppm with 1 ppm resolution
Hydrogen Sulfide (H2S) Detection: 0 - 100 ppm with 1 ppm resolution
Gas Sensor Type: Electrochemical (CO, H2S, O2) & Catalytic (EX LEL)
Gas Sensor Life: 2 - 3 years
Sampling Method: Natural diffusion (no pump)
Operating Pressure: 1.0 bar nominal (range: 0.8 to 1.2 bar)
Recommended Calibration Period: 12 months
Digital Output Datalogging: RS485 MODBUS (🛠️ Setup Guide)
Error: ≤ ± 5% F.S.
Response Time: <60 seconds
Alarm: LED & Buzzer
Audible Buzzer Alarm: ≥ 85 dB @ 1 meter
Store / Operating Temp: 0 to 122°F (−18 to 50°C)
Store / Operating Humidity: <95%RH
Explosion-Proof Grade: ATEX certified Ex d ⅡC T6 Gb (📋 PDF)
Protection Category: IP65
Power Supply: DC 24V ±15% (100–240V AC, 50/60 Hz)
Max Power Consumption: 20 W (LED ON and Buzzer ON)
Electrical Output: 2 x relay contacts, max power 50 W per relay
Dimensions: 7.9 × 7.1 × 3.5 inches (20 × 18 × 9 cm) 
Weight: 3 lbs (1.4 kg)
Threads: G1/2 male proof hose pipe, thread size M20 x 1.5 mm
Housing Material: Die-cast aluminum alloy
Calibration Location (USA): Los Angeles, California, USA
Calibration Standard (USA): USA NIST Traceable Gas Source
Calibration Location (Europe): Athens, Greece
Calibration Standard (Europe): European NPL Traceable Gas Source