Brand: FORENSICS DETECTORS
Model: FD-90A-THT
User Manual (PDF): EN | DE | FR | ES | IT |
Application Guide: Blog explanation
Features:
- 🎆 THT Gas: Professional and accurate Tetrahydrothiophene (THT) gas detector, 0 - 50 mg/m3 with 0.1 mg/m3 resolution.
- ⚛️ DETECT: Electrochemical NANO-GAS sensor.
- 🎆 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: A professional Tetrahydrothiophene (THT) gas detector by FORENSICS with advanced functions that comes factory-calibrated. Tetrahydrothiophene gas detectors (THT chemical formula is C4H8S) are used to prevent exposure to toxic or harmful THT gas concentrations. Used for spot checks, restricted access, and personal safety. THT gas is utilized as an insecticide, a natural gas odorant, and a solvent in the chemical industry. High concentrations of tetrahydrothiophene exposure can cause headaches, dizziness, weakness, convulsions, and giddiness. Tetrahydrothiophene can give you stomach pain, diarrhea, and the flu. THT gas detectors are useful for anyone who may be exposed to Tetrahydrothiophene gas, including anyone who will be in an environment where natural gas is present. Tetrahydrothiophene is also identified as Thiophene, Tetrahydro-, Thiophane, Thiolane, and Thiacyclopentane. OSHA does not state any PEL or TWA for Tetrahydrothiophene gas. Neither does EPA, NIOSH, nor ACGIH.
The only reference for Tetrahydrothiophene gas comes from the German body called the MAK Commission. MAK values are derived by the “DFG Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area”, better known as the “MAK Commission”. The German Research Foundation (DFG) has mandated this independent body to determine the current state of research relating to the health risks posed by substances and materials used at the workplace and to advise public authorities accordingly. MAK value = 183mg/m3 (50 ppm), peak limitation.
Included: Tetrahydrothiophene gas detector, belt clip, sling, user manual, USB charging cable, calibration cover, and certified calibration certificate.
Calibration Options:
1. Professional Calibration: Serviced by Forensics
Calibration Kit (needed to calibrate yourself - sold separately):
None available. Must be calibrated by Forensics Detectors via our Gas Detector Calibration Service.
Accessories (sold separately):
Pump and Probe
Gas Detector Hard Case
Gas Detector Pouch
Gas Detector Stand
Gas Sensor Replacement (please email us)
Specifications
THT Detection: 0 - 50 mg/m3 with 0.1 mg/m3 resolution
Recommended Calibration Period: 12 months
Sampling Type: Diffusive (no pump). Optional external pump available.
Gas Sensor Type: Electrochemical Gas Sensor
Gas Sensor Life: 2 - 3 years
Error: ≤ ± 5% F.S
Response Time: < 30 sec
Indicators: LCD indicates the time, concentration, internal electronics temperature tracking, and battery level
Alarm: LED, Buzzer, and Vibration
Datalogging: No
Store / Operating Temp: 0°F - 122°F (-18°C to 50°C
Store / Operating Humidity: <95%RH
Voltage: DC 3.7V Li-battery 1500 mAh
Working Time: > 24 hours
Charging Time: 4 hours
Explosion Rating: ATEX certified Ex ib IIC T4 Gb (PDF)
Weight: 5 oz / 140 g
Dimensions: 4.3 x 2.3 x 1.7 inches (10.9 × 5.8 × 4.3 cm)
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






