SKU: 29359625591

Dust Opacity Monitor - MRU DM 401 (short)

Sale price$4604.85 Regular price$5116.50
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

Dust Opacity Monitor - MRU DM 401 (short)* DM 401 BROCHURE * Description Product Overview The DM 401 (short) is a double pass dust opacity monitoring system used for continuous in situ measurement for use in a short optical path length 20" to 157" (0. 5m to 4m) Features Direct continuous measurement across stack Small, lightweight & low operating costs Simple installation, commissioning and operation No moving parts minimal maintenance PC based setup, control and data logging Long life green

* DM 401 BROCHURE *

Description

Product Overview

The DM 401 (short) is a double pass dust opacity monitoring system used for continuous in-situ measurement for use in a short optical path length 20" to 157" (0.5m to 4m)

Features

  • Direct continuous measurement across stack
  • Small, lightweight & low operating costs
  • Simple installation, commissioning and operation
  • No moving parts – minimal maintenance
  • PC based setup, control and data logging
  • Long-life green LED source
  • High measuring accuracy
  • Opacity or mg/m3 (*) after on site calibration according to VDI 2066

Double pass opacity and dust monitoring system used for continuous in-situ measurement.

Basic Equipment
  • Direct continuous measurement across stack
  • Small, lightweight & low operating cost
  • Simple installation, commissioning and operation
  • No moving parts – minimal maintenance
  • PC based setup, control and data logging
  • Long-life green LED source
  • High accuracy
  • Opacity or mg/m3 (*) after on site calibration according to VDI 2066
Technical Data
Measuring ranges
Opacity 0 … 100 % opacity
10 … 1,000 mg/m3 dust
(after on site calibration according VDI 2066)
Dimensions and other data
Data transmission galvanic isolated 4-20mA analog output
RS485 with Modbus RTU protocol
PC-Interface USB or RS485
Media only for non condensing flue gas
Accuracy +/- 2 %
Housing Aluminium die cast
Power supply 22…24 Vdc / 20W
Protection class IP 65
Weight appr. 10.72 lbs
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29359625591

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4.3 ★★★★★
Based on 19 reviews
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Verified Purchase
Jason G
Bozeman, US
★★★★★ 5
Ignore the “Frequently returned item” message!
Color: Walnut Color, Color: Walnut Color
I usually don’t write reviews but I thought I should for these shelves. I was a little skeptical on these based on the “Frequently returned item” message but I decided to give them a shot and I’m glad I did! These shelves are solid and well made, beautiful color, fit perfectly in the corner of my wall, and are easy to hang. I’m not sure why they are frequently returned but I will be ordering another set for my wife’s side of the room.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
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Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
Nice Shelves
Color: Acacia
Nice looking shelves and installed very easily.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
T
Verified Purchase
Thomas Selden
Cuba, US
★★★★★ 4
Good looking, quality control needs improvement
Color: Acacia
The shelves are fine but one of the mounting blocks was glued on backwards which meant the holes for countersinking the mounting screwed ended up on the wrong side. It was easy to drill new countersinks so no big deal but a star is docked for quality control. They are cheap and looks good so I can't complain much.
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Reviewed in the United States on December 6, 2025
M
Verified Purchase
Margaret S. Hastings
Lake Worth, US
★★★★★ 5
Lovely, space saving and easy to install
Color: Acacia
LOVE THESE SHELVES! So easy to install and they look fantastic in any room. Good price point and very stable. Love the color of the wood, perfect for small spaces.
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Reviewed in the United States on February 10, 2026
D
Verified Purchase
Douglas Collier
Belleville, US
★★★★★ 5
Good looking shelves
Color: Acacia
The shelves look great and are exactly what was needed for the application chosen. It wasn’t an issue for me, but the mounting hardware was missing. I always use my own wall anchors so it didn’t affect me, but it may have others.
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Reviewed in the United States on April 28, 2026

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