M100 Head Mount Transmitter for Rugged Installations
M100 Head Mount Transmitter

M100 Head Mount Transmitter

Small Footprint – Big Possibilities

The M100 is the world's first head mount transmitter for analytical measurements. Thanks to Intelligent Sensor Management (ISM) technology, the M100 requires neither a display nor a local operator interface and is therefore extremely compact as well as sturdy.

The M100 is a single-channel, multi-parameter unit for pH/ORP, conductivity, and dissolved oxygen measurement.

Specifications - M100 Head Mount Transmitter
ISM features Plug and Measure, DLI, ACT, TTM
Housing material Upper part: Die cast aluminum; Lower part: Stainless steel
Enclosure IP 66, NEMA 4X
Approvals ATEX / IECEx Zone 1, CSA Class I; II, III Div 1, Class 1, Zone 0, NEPSI Ex Zone 1
Supply voltage 14 – 30 VDC
Analog output 1 × 4 to 20 mA (loop powered), galvanically isolated
Communication HART®
Analog input 1 × 4 to 20 mA (for pressure compensation)
Digital input 1, switching transmitter in HOLD state


Sensor compatibility
<p>&nbsp;</p>ISM 1-wire pH, amperometric oxygen and conductivity sensors

Ordering information
Designation<b>Order No.</b>
M100 head mount transmitter M100 / 2XH M20 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 30 026 578<br>M100 / 2XH NPT ¾" &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 30 246 352

Features and Benefits

Low installation costs
Rugged construction and compact design allow direct installation next to the process. M100 offers a versatile solution for both hazardous and nonhazardous area installations.

Predictive maintenance
Easiest handling and on-site or remote access over HART to advanced ISM predictive diagnostics tools leads to reduced maintenance costs and increased process uptime.

Simple Plug and Measure operation
With iSense, the key tool of ISM, sensors can be precalibrated via a PC or portable device then connected to the M100. Therefore, a user interface in the field is no longer necessary.


  • Multi-parameter transmitter
  • Compatible with major asset management tools
  • Small footprint for installation flexibility


Instruction Manuals

Operating Instructions for Head Mount Transmitter M100
These operating instructions offer important notes on handling of the M100 transmitter of METTLER TOLEDO. A prerequisite for safe work is compliance w...

Quick Setup Guides

Quick Setup Guide Transmitter M100
The M100 is a 2-wire head mount transmitter for analytical measurements with HART communication capabilities. The M100 is a single-channel, multi-para...

Bus Communication Info

M100 2XH DTM Setup V1.00.0003
HART, DTM for PACTware ™: Version 4.x


Webinar: Small Footprint Installation for Hazardous Areas
The continuous, real-time information that in situ analyzers provide has huge advantages over lab analyses of grab samples, and in the end leads to mu...


The world's first head mount analyzer transmitter
Watch the video to see how easy in-situ analysis becomes with the M100 head mount transmitter.
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M100 Head Mount Transmitter


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M100 Head Mount Transmitter
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