M420 - Översikt - METTLER TOLEDO

M420 - Utgångna varor

For Hazardous Area Applications.

The M420 transmitter series stands for reliability in loop-powered applications. When your process requires the highest safety level for pH, oxygen and conductivity  measurement, the M420 brings you the best performance and the advantages of the state-of-the-art ISM technology* for efficient maintenance.

Utgått sedan: Dec, 2016

Ersatt med: M400 2-tråd

Process M400 2-Wire Transmitter

- for Hazardous Area Applications across the Chemical Industries

Intelligent Sensor Management (ISM), global hazardous area approvals and the rugged design of the M400 2-wire transmitter series provide outstanding operating reliability and process safety. These features ensure the M400`s suitability for use across the chemical industries. Easiest handling and on-site or remote access over HART to advanced ISM predictive diagnostics tools leads to reduced operating costs and increased process uptime.

The M400 2-wire transmitter is a single-channel, multi-parameter unit for pH / ORP, oxygen and conductivity measurement. Thanks to the mixed-mode input, which allows the use of analog or ISM sensors, the M400 2-wire offers a unique and smooth transition from analog to digital technology.


Dokumentation - M420


Application Note: pH Control in Sour Water Stripping
In petroleum refining, so called sour water (process water that contains dissolved hydrogen sulfide – H₂S) is produced in various processes. Due to en...
In-line O2 Measurement for Inertization Control
For safety reasons, some chemical reactions take place in an inert gas environment where the amount of oxygen present is tightly controlled. The METTL...
Ensuring Safety in Reactor and Centrifuge
Critical reaction and extraction stage in an API production process can be ensured safe with inline gas-phase oxygen sensing technology which eliminat...

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Tillbehör - M420

Specifikationer- M420

Specifikationer - M420
ISM Plug and Measure™, DLI, ACT
Protection IP 67
Approvals CE, ATEX / IECEx / FM/CSA, Zone 1 / Cl I Div 1 (pending)
Temperaturområde - 20 °C to 65 °C (- 4 °F to 149 °F)
Digital ingång/utgång optional: HOLD and CONTROL
User Interface LC display, 7 segment with icons, backlit (white)
Ström ut 2nd passive current output optional
Service Interface IrDA
Kort beskrivning for pH, O2, conductivity
Parameter pH/ORP, DO, O2-gas, konduktivitet
Kommunikation HART®
Klassificering av riskfyllda områden ATEX, IECEx, CSA, FM
Typ av sensor Analog eller ISM
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