User's Guide

MUNI User’s Guide
4
1. General Information
The MUNI MP420 is a compact and lightweight 4-gas detector for worker safety at hazarous
locations, with four standard sensors for oxygen (O
2
), combustibles (LEL), carbon monoxide
(CO) and hydrogen sulfide (H
2
S). Alternative sensors are lead-free oxygen (O
2
), low power
infrared methane (CH
4
), sulfur dioxide (SO
2
), and hydrogen cyanide (HCN). The detector is
packaged in a robust housing with no moving parts. Its battery power offers 2 work shifts of run
time (24 hours) for a standard 4-gas detector, and extended duration when using a low-power
infrared sensor. The simple, 2-button operation results in ultimate ease of use and significantly
reduced time spent training the user.
1.1 Main Features
• Various models for basic confined space entry (CSE) compliance, plus SO
2
and HCN
sensors.
• Diffusion sampling
• Compact, robust, lightweight & wearable
• Auto backlit LCD with large numeric digits
• Easy-to-navigate menu with two buttons
• 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
• Replaceable sensors & battery
• Optional BLE wireless connectivity
• Optional MuniDock for convenient bump & calibration
• Durable double-shot outer case
NOTE
Due to continuous improvement of our products, this manual may not reflect all of the latest
updates in software, firmware and hardware for the instrument received.