GMJA400-S-MOB Gas Detection Module for Quadruped Robots
Robotic & Mobile Payloads

GMJA400-S-MOB Gas Detection Module for Quadruped Robots

GMJA400-S-MOB

A pumped payload for quadruped robots: up to four gases plus temperature and humidity, IP66, 113 × 113 × 46 mm, about 500 g.

Overview

Quadruped robots carry instruments into places people should not walk: cable tunnels, storage yards, damaged structures, plant walkways at night. The MOB is the payload for that job. It measures 113 × 113 × 46 mm, weighs about 500 g, and mounts on the robot's back rail or a quick-release gimbal.

It monitors up to four gases plus temperature and humidity in one pass, sampling by pump through a sealed gas path at constant flow rather than relying on diffusion. That matters close to the ground, where dust and disturbed air would otherwise slow a diffusion sensor down.

The housing is IP66 and rated Ex ia IIC T4 Ga, with a vibration-tolerant structure tuned for the 1-3 Hz gait of a walking platform. Data leaves over UART, RS485, USB or standard ROS/ROS2 topics, with WiFi, Bluetooth, 4G and 5G optional, and the unit buffers at least 500,000 records locally for upload after the run.

Specifications

Values below are for the standard configuration. Gas, range, sampling mode, housing and output are set at order, so confirm against the datasheet before design freeze.

Target gas Up to 4 gases plus temperature and humidity: combustibles, toxics, VOCs, dust
Detection principle Electrochemical, NDIR, PID, catalytic bead, thermal conductivity, semiconductor
Sampling mode Pumped, sealed gas path with constant-flow sampling
Measuring range Configured per gas: 0-100 %LEL, 0-25/30 %VOL, ppm and ppb channels
Accuracy ±1 %FS to ±3 %FS
Response time T90 10-120 s, depending on sensor
Output signal UART / RS485 / USB / ROS2 topics; WiFi / Bluetooth / 4G / 5G optional
Power supply 3.3-24 V DC
Protection rating IP66
Dimensions 113 × 113 × 46 mm
Weight ≈500 g
Certification Ex ia IIC T4 Ga (China Ex)

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