Mercaptan Gas Detector | USA NIST Calibration

  • Sale
  • Regular price $995.00


Model: FD-90A-CH4S
User Manual:
Click Here
Blog Article: Click Here


  • ⚛️ DETECT: Ultrasensitive, Mercaptan (CH4S) gas detector, 0 - 10 ppm with 0.01 ppm resolution. Comes FACTORY-CALIBRATED.
  • 🌷 ACCURATE: Electrochemical cell sensor with accuracy ≤ ± 10% F.S. and response time T < 30 sec. Zero and span calibration options. 
  • 🎆 ALARMS: Adjustable audio, visual, and vibration alarms. Alarms include digital time stamping and logging. Temperature, battery, and time tracking.
  • 💪 STRONG: Shockproof, water-resistant, dustproof, and explosion-proof. Belt clip, charger, cable, and case included.
  • 🕵️ TRUSTWORTHY: ** 1-year limited warranty ** Arrives with calibration and QA certificates ** Product tested and verified in the USA ** 

Details: This is our professional Mercaptan (CH4S) gas detector by FORENSICS with advanced functions that comes factory-calibrated. Mercaptan is sometimes referred to as mercaptan, methyl mercaptan, or methanethiol. Its chemical formula is presented as CH4S, MeSH, or CH3SH. Mercaptan is used as a gas odorant; an intermediate in the production of pesticides, jet fuels, and plastics; and in the synthesis of the amino acid methionine. Because methyl mercaptan is a gas a ambient temperature, the most likely exposure routes are inhalation and dermal.  It has pungent garlic, rotten cabbage, or a skunk-like odor. OSHA PEL is recommended at 10 ppm over 8 hours and NIOSH recommended exposure is 0.5 ppm over 10 hours. 

Included: Gas detector, belt clip, sling, English manual, USB charging cable, calibration cover, and USA NIST calibration certificate.

Accessories (sold separately): 
Calibration Gas (H2S) (Surrogate Gas 5ppm H2S : 10ppm CH4S is used for calibration)
Calibration Gas Regulator (C10) 
Gas Sensor Replacement (email us)
Pump and Probe
Gas Detector Hard Case
Gas Detector Pouch
Gas Detector Stand
Gas Detector Calibration Service (single gas)

Mercaptan (CH4S) detection: 0 - 10 ppm with 0.01 ppm resolution
Accuracy: ≤ ± 10% F.S.
Response time: less than 30 sec
Indication: LCD indicates the time, concentration, temp, and battery state
Alarm: Indication of alarm and low voltage with LED, sound, and vibration
Operating temperature: 0F - 122F
Operating humidity: less than 95% RH non-condensing
Voltage: DC 3.7V Li-battery 1500 mAh
Working time: > 24 hours
Charging time: 4 hours
Sensor life: 2 - 3 years
Protection category: IP65
Weight: about 130 g (including battery)