MRU Instruments DM 401 Specifications

Double pass transmission measurement

Measures 0 ... 100 % opacity

or 10 ... 1,000 mg/m dust (*)

Power utilities

Refineries

Direct continuous measurement across stack

Chemical / Petrochemical

Small, lightweight & low operating costs

Incinerators

Simple installation, commissioning and operation

Cement plants

No moving parts – minimal maintenance

Iron and steel plants

PC based setup, control and data logging

Crematoria

Long-life green LED source

Electrostatic precipitators

High measuring accuracy

Filter bag houses

Opacity or mg/m3

Heat insulator gasket

Green LED light

Stack

Flange

Alignment gasket (rubber)

Heat insulator gasket

←

POWER

→

ALARM CONTACTS

Reflector

→

4 … 20 mA

←→

Modbus

←→

USB

Purge air inlet

1" BSP thread fitting

Purge air inlet

1" BSP thread fitting

DUST MONITORING SYSTEM

(*) after on site calibration according to VDI 2066

DM 401 is the ideal dust monitoring
instrument for continuous monitoring of
flue gas particulates in the
ducts/stacks/chimneys of industrial
combustion.

Flange

Alignment gasket (rubber)

The DM 401 is designed for use in multiple
industries including:

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FEATURES:

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Transceiver

Y-connector

Air filter

Blower weather cover

AIR BLOWER

Both the transceiver and reflector are supplied with

ambient air (blower unit).

This will prevent dust particle deposition on the

optical lenses by continuous purging

with clean ambient air and extend substantially

the maintenance free operation.