• Beijing Zetron Technology Co., Ltd
    Hello, I already used the equipment in an aluminum smelting plant in Mexico and I was surprised by the function of your company's laser device.
  • Beijing Zetron Technology Co., Ltd
    Good gas leak detection instrument !!! High accurate test values :D
Contact Person : Lisa Niu
Phone Number : +86 15699785629
Whatsapp : +8615699785629

Zetron MUNI MP420 Portable Multi Gas Detector Compact Diffusion Type For Industrial Hygiene

Place of Origin China
Brand Name Zetron
Certification CE
Model Number mPower MUNI MP420
Minimum Order Quantity 1 pcs
Price USD 368/set- 460/set
Packaging Details carton
Delivery Time 14 work days
Payment Terms Western Union, MoneyGram
Supply Ability 1000 Piece/Pieces per Month

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Product Details
Product Name 4 In 1 Multi Gas Detectors CO/H2S/O2/LEL Gas Analyzer Function Portable Gas Detector
IP Rating IP 68 Size 4.33 X 2.36 X 1.10 In (110 X 60 X 28 Mm)
Weight 8 Oz (230 G) Temperature -4° To 122°F (-20°C To 50°C)
Humidity 0% To 95% Relative Humidity (non-condensing)
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IP 68 portable multi gas detector


Compact Diffusion portable multi gas detector


IP 68 portable multi gas analyzer

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Product Description
mPower MUNI MP420
4 In 1 Compact Multi-Gas Detectors
The MUNI MP420 is a compact and lightweight 4-gas detector for worker safety in hazardous locations with four standard sensors for oxygen (O2), combustibles (LEL), carbon monoxide (CO), and hydrogen sulfide (H2S). Alternative sensors include low power infrared methane (CH4), sulfur dioxide (SO2) and hydrogen cyanide (HCN). The detector is housed in a rugged enclosure with no moving parts. Its battery power provides 24 hours of operation for a standard 4-gas detector and extended run time when using a low power infrared sensor. Simple 2-button operation provides ultimate ease of use and significantly reduces user training time. To save users money, sensors are not interchangeable and must be specified at the time of purchase.
• Various models for basic confined space entry (CSE) compliance, plus SO2 and HCN sensors.
• Diffusion sampling
• Compact, robust, lightweight & wearable
• Auto backlit LCD with large numeric digits
• Easy-to-navigate menu with two buttons
• Up to 4 replaceable sensors out of 8 choices; non-interchangeability reduces monitor cost
• Battery operation 24 hours with pellistor LEL sensor or extended time with low-power infrared LEL sensor
• Two-color status indicators on regular self-diagnosis of sensor, battery and circuitry
• Wide angle LED alarms
• 1000 Events log
• Combination charge adapter / micro-USB PC interface cable
• IP-68 weather ingress rating
• Optional BLE wireless connectivity
• Optional MuniDock for convenient bump & calibration
• Durable double-shot outer case
4.33 x 2.36 x 1.10 in (110 x 60 x 28 mm)
8 oz (230 g)
Standard LEL (Pellistor), O2-LF (Pb-free), CO and H2S
Alternatives CH4 (NDIR), O2 (Galvanic), SO2 and HCN
Replaceable but not interchangeable
Rechargeable Li-ion pack: ≥ 24 hours (with Pellistor) or extended run time (with NDIR)
Direct Readout
Real-time reading of gas concentration
Visual compliance indicator
Battery status
STEL, TWA, peak and minimum values
Segment LCD, 1.75 x 1.25 in (44 x 32 mm) with LED backlight for enhanced readability
2 operation keys
Manual calibration. MuniDock or Calicase allows automatic bump test and calibration
Wireless remote alarm notification, audible (95dB@30cm), vibration, visual (flashing bright red LEDs), and on-screen indication of
alarm conditions Man Down Alarm with pre-alarm and real-time remote wireless notification
1000 Events (Software allows printing of Calibration Certificate)
Charging and Communication
Charging with AC adapter or cable to PC
PC comm for data download, monitor setup & firmware upgrades via cable, optional BLE (Bluetooth Low Energy), or MuniDock
-4° to 122°F (-20°C to 50°C)
0% to 95% relative humidity (non-condensing)
IP Rating
Safety Certifications
UL/cUL: Class I, Div 1, Group A, B, C, D
T4, -20°C ≤ Tamb ≤ +50°C
EMC directive: 2004/108/EC
ATEX II 1G Ex da ia IIC T4 Ga
2-year including sensors
3-years with NDIR-LEL/O2-LF/H2S/CO
Sensor Range Resolution Response Time (t90)

1. Combustible (LEL)

  • Pellistor
  • NDIR
  • 0-100%LEL
  • 0-100% LEL CH4
  • 15 sec
  • 30 sec

2. Oxygen (O2)


  • Lead-free
  • Galvanic
0-30%Vol 0.1%Vol
15 sec

3. Hydrogen Sulfide (H2S) or

Hydrogen Cyanide (HCN)





15 sec
45 sec

4. Carbon Monoxide (CO) or

Sulfur Dioxide (SO2)





15 sec
30 sec



* Sensors are replaceable but NOT interchangeable (including lead-free and galvanic oxygen). Sensor configuration must be decided at time of purchase because each configuration has a unique circuit board.


The detector is widely used in petroleum, chemical industry,environmental protection, metallurgy, refining, gas, biochemical medicine, agriculture, fire protection, Archaeology and other industries and places that need safety monitoring for toxicity and harmfulness, explosion prevention.
Zetron MUNI MP420 Portable Multi Gas Detector Compact Diffusion Type For Industrial Hygiene 0