Brand: FORENSICS DETECTORS
Model: FD-4A
User Manual (PDF): EN | DE | FR | ES | IT |
Application Guide: Blog Explanation
Features:
- ⚛️ SENSOR: High-quality sensors are included in this 4-gas monitor to detect Oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S), and combustibles (LEL). Comes FACTORY-CALIBRATED.
- 🌇 DETECTION: Ultra-advanced nano-sensors for high fidelity. Zero and span calibration options.
- 📲 ALARMS: Adjustable audio, visual, and vibration alarms.
- 💪 STRONG: Shockproof, water-resistant, dustproof, and explosion-proof.
- 🕵️ TRUSTWORTHY: 1-year limited warranty. Arrives with a signed and dated calibration certificate.
Details: This is our most popular 4-gas personal monitor. This multi-gas detector includes multiple functions, high-quality sensors, a large LCD, and a backlight. This 4-gas monitor is robust for industrial use by utility workers, refinery workers, firefighters, maintenance engineers, and those who spend time in sewers and waterworks, underground storage tanks, oil rigs, tanks, and silos in the maritime industry. 4-gas monitors are essential in dangerous environments and confined spaces, and for anyone who needs personal protective equipment to monitor whether the atmosphere is breathable and safe. For those requiring a 4-gas meter with a built-in pump, we recommend our FD-600-4GAS multigas detector. If an external pump is required, we offer this unit with a multigas detector pump combo. The ultimate 4-gas monitor is our 4-gas data logger, and for stationary continuous monitoring, we have our 4-gas wall-mount monitor.
Included: Multi-gas detector, user manual, computer USB charging cable, charger, calibration cover, metal belt clip, nut to secure cap, and certified calibration and QA certificates.
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)
4 Gas Bump Gas
Tubing
Accessories & Parts (sold separately):
Gas Sensor Replacement (CO)
Gas Sensor Replacement (H2S)
Gas Sensor Replacement (O2)
Gas Detector Waterproof Case
Gas Detector Stand
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: Diffusive (no pump) | Optional external pump available
Operating Pressure: 1.0 bar nominal (range: 0.8 to 1.2 bar)
Recommended Calibration Period: 12 months
Datalogging: No
Analog Signal Output: No
Error: ≤ ± 5% F.S.
Response Time: ≤ 30 sec
Store / Operating Temp: 0 to 122°F (−18 to 50°C)
Store / Operating Humidity: <95%RH
Display Type: Backlit monochrome LCD
Power Source: DC 3.7V Li-ion battery, 2000 mAh
Alarm: LED, Buzzer, and Vibration
Audible Buzzer Alarm: ≥ 85 dB @ 1 meter
Explosion-Proof Grade: ATEX certified Ex ib IIC T4 Gb (📋 PDF)
Protection Category: IP65
Recommended USB Power Supply: 5V / 1A minimum (USB-A)
Charge Time: 4 hours
Operating Time: > 24 hours
Weight: 8.1 oz (230 g)
Dimensions: 5.1 × 2.6 × 1.2 inches (13 × 6.7 × 3 cm)
Housing Material: ABS Plastic
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