NXM Series

Multi Gas Detectors

H₂S, CO, O₂ and LEL

Nextteq's NXM Series of Multi Gas Detectors -

notably some of the most reliable detectors in the industry

Nextteq®'s NXM Series

4-gas monitors for worker protection

in hazardous environments

easy-to-use, dependable, and rugged

A man is running wires in a warehouse and has a Nextteq® NXM Series Multi Gas Detector clipped to his vest.

Nextteq’s new rugged and wearable NXM 4-gas portable monitor simultaneously detects up to four gases, including hydrogen sulfide (H2S), carbon monoxide (CO), oxygen (O2) and combustibles (LEL).

Operation: Easy-to-use operation, easy-to-read LCD display, and fast response helps protect workers and overall operations from potential hazards. To alert the user of unsafe conditions, the NXM series has audible, visual, and vibrating alarms including default or user defined high/low alarm set points as well as STEL and TWA alarm set points for toxic gases.

Options: The NXM series includes your choice of LEL sensor of either catalytic bead (Pellistor) or NDIR type sensor. The NDIR version provides increased run time and an LEL sensor that is immune to poisoning and can be used in inert (low O2) environments.

Data storage: Obtaining data is key and the NXM detector comes with both Event and Data logging. Event logging includes 30 events, 30 calibrations, and 30 bump tests. Data logging includes 2 month’s worth of continuous data storage of 1-second intervals, 24 hours a day, 7 days a week.

NXM Flyer & Spec Sheet

Ordering Options and Alarm Levels Presets

Note: All alarms can be modified

NX90222 NXM-P	NX90221 NXM-IR	Gas		Measuring Range	Resolution	Low Alarm	High Alarm	STEL	TWA	Cal Gas [Conc]
X	X	CO	ppm	0-500	1 ppm	35	100	200	35	100 ppm
X	X	H2S	ppm	0-100	0.1 ppm	10	20	15	10	25 ppm
X	X	O2	%vol	0-30	0.1% vol	19.5	23.5			18 % vol
X		LEL (Pellistor)	%vol	0-100	1% LEL	10	20			50% LEL
	X	LEL NDIR	%vol	0-100		10	20			50% LEL

Question to Dr. Duffy, PhD., CIH

What is the difference between
Calibration and Bump Testing?

The basic definition of a bump test is that it determines if the unit can detect and alarm in the presence of the target gas, while calibration assures that the unit is accurate. The bump test assures the unit is functioning while a calibration assures that the unit is accurately reading the target gas concentration.

Occupational Safety and Health Administration (OSHA) states that “it is essential to keep records of all device testing and maintenance.” If a user experiences a reportable event with a portable NXS detector for example, then OSHA may require to see a history of all bumps and calibrations during the year prior to the incident. Testing and maintenance data can track other valuable information as well and new technology (like the NX IR link and software, or the NX docking station and software) makes record-keeping easier and more valuable than ever.

Dr. Duffy, PhD., CIH

NXM Approvals

A world map showing NXM Series Multi Gas Detector Approvals.

CSA: Class I, Division 1, Groups A, B, C, and/or D, T4 Ex ia IIC T4 Ga

Class I, Zone 0, AEx ia IIC T4 Ga

ATEX II 1 G Ex ia IIC T4 Ga

IECEx Ex ia IIC T4 GaNew Paragraph

Data Management

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Nextteq's NX-IR-Link is designed to communicate to the NXM portable using Nextteq's IR-Link interface software for calibrating, bump testing, and event management.

Nextteq's NXM Docking Station is designed to calibrate and bump test up to four NXM portables simultaneously, helping to reduce time. It provides bump testing, event management and calibration from a simple to use multi-unit station.

Both options maintain all important event logs that demonstrate users are working within company requirements and you can obtain the following key data:

Each alarm event (30 events) records the following event details: