Industrial Scientific Ventis MX4 Four-Gas Monitor

The Ventis MX4 is a portable multi-gas monitor that detects up to four gases including LEL, O₂, CO, and H₂S. It features user-replaceable sensors, a backlit LCD, and datalogging capability. The device operates for up to 20 hours on a rechargeable battery and is IP66/67 rated for dust and water resistance. It is certified for use in hazardous environments with CSA, ATEX, and IECEx approvals.

Product Info Related Products

Gases Detected	Up to 4 gases (CH4, O2, CO, CO/H2 low, H2S, NO2, SO2)
Sensor Types	Catalytic Bead (CH4), Electrochemical (others)
Measuring Ranges	Combustibles: 0–100% LEL (1% incr) CH4: 0–5% vol (0.01% incr) O2: 0–30% vol (0.1% incr) CO/CO(H2 low): 0–1000 ppm (1 ppm incr) H2S: 0–500 ppm (0.1 ppm incr) NO2/SO2: 0–150 ppm (0.1 ppm incr)
Battery Life (Typical @ 20°C)	Slim Li-ion: 18 hr (no pump) Li-ion: 12 hr (no pump) Extended Li-ion: 20 hr (no pump), 12 hr (with pump) AAA Alkaline: 8 hr (no pump), 4 hr (with pump)
Alarms	LEDs, 95 dB audible at 30 cm, vibration
Temperature Range	–20°C – 50°C
Humidity Range	15% – 95% RH, non-condensing
Display	Backlit LCD
Certifications	ATEX, IECEx, UL, CSA, MSHA, ANZEx, INMETRO, etc.
Ingress Protection	IP66/67
Pump Option	Available (Slide-on or Integral)
Pump Draw Distance	Up to 50 ft
Dimensions (No Pump)	103 × 58 × 30 mm
Dimensions (With Pump)	172 × 67 × 66 mm
Weight (No Pump)	182 g
Weight (With Pump)	380 g
Case Material	Polycarbonate with rubber overmold
Languages Supported	16 languages including EN, FR, ES, DE, ZH, JA

Detect up to four gases with a wide range of sensor options
Select alarm set points, set latch alarms, disable instrument shutdown while in alarm, and more
Save time and reduce human error with maintenance and usage data available from iNet Control software
Available with or without an integral pump, or with the Ventis Slide-on Pump for ultimate flexibility
Non-pumped instruments compatible with 12-hour, 18-hour, or 20-hour batteries