MDS Monitor Divert System

MDS Monitor Divert System in S/S Console

The MDS Monitor Divert System is a BLRBAC compliant Black Liquor solids monitoring system designed specifically for Black Liquor recovery boilers.

The MDS Monitor Divert System consists of two completely independent MPR E-Scan Hybrid-Digital refractometers with a separate monitor console that supervises the proper operation of each refractometer. The monitor constantly insures that all parameters remain within operational limits and applies the proper divert or alarm actions should a fault or low solids liquor be detected. A built-in printer records all actions with a date and time stamp. The entire system is designed to be user friendly with large daylight-readable color displays and an intuitive menu-driven interface.

Isolation Valves are also required to meet the BLRBAC guidelines and allow the refractometer sensing heads to be isolated from an active pipeline should maintenance be needed. The system closely monitors the position of these isolation valves to verify that the refractometers are in service.

MDS Monitor Divert System Wiring

All functions of the MDS Monitor Divert System are automatic. For example, should a refractometer fault occur the unit is electronically removed from service and an alarm is activated. Simultaneously the output signal is driven low to warn the operator to disregard this reading. The monitor system then isolates, displays the fault and provides a hard copy record on the built-in printer. Liquor diversion is now controlled by the refractometer in service.

Many features are incorporated into the MDS E-Scan. Besides providing a printout of all critical operations, the monitor unit will datalog error alarms, warning alarms, diverts, prism purge duration, comparator readings, etc. This valuable information can be useful in both preventive and predictive maintenance.

MDS Monitor Divert System Panel Mount

Other special features include:

  • Intelligent purge function- ensures the proper cleaning and extends prism life
  • Divert trending- provides an actual time left before a diversion when liquor solids are declining
  • Password protection- to protect critical software areas


The MDS Monitor Divert System is pre-wired and mounted on a panel for easy installation. All customer connections are made to a single terminal strip. Standard output is a 4-20mA for liquor concentration with relay contacts for liquor divert, alarms, and system error indicators. A remote divert input is also available. The system can be provided in an optional stainless steel enclosure with either a vortex-cooler or fan ventilation depending on the specified mounting location.

MDS Monitor Divert System with Isolation Valves and Purge Paks

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Contact Information

Electron Machine Corporation
15824 CR 450 West
P.O. Box 2349
Umatilla, FL 32784

Phone: (352) 669-3101
Fax: (352) 669-1373
E-Mail: sales@electronmachine.com


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