Coal Flue Gas Desulfurization

Desulfurization is an important part of coal processing which keeps excessive amounts of sulfur dioxide from being emitted into the atmosphere, which could lead to acid rain.
A Red Meter Toro can make this process more efficient and accurate.

Next Gen measurment



Wet density of limestone slurry is measured by the Red Meter Toro in real-time as the slurry passes through the inlet into the sulfur dioxide absorber. The density of the inlet slurry must be within an allowable range to properly control the process, and a second Red Meter Toro can be placed on the outlet to ensure the absorption levels of the sulfur dioxide in the tower were adequate.


High limestone density is extremely detrimental to the performance of the flue gas desulfurization process, and can potentially lead to system shutdown if sulfur is not sufficiently attenuated in the absorption tower.

Intramedia density measurement instruments such as nuclear and ultrasonic devices must be regularly calibrated, and have wide margins of error. Nuclear devices incorporate additional costs such as import and transportation fees, as well as personnel costs associated with safety, certification, and maintenance.


+  No need to calibrate instruments for specific media characteristics
+  Eliminates regulatory or safety concerns that surround on-site radioactive materials
+  No maximum percent solids
+  Easy to use and install

Plug & Play

Each Red Meter Toro is calibrated on the factory floor before shipment. It is not necessary to recalibrate due to changes in your media characteristics.

Data Quality & Accuracy

Rather than inferring density, the Red Meter Toro takes data from multiple integrated sensors which are used to calculate density in real time.

Process Control

When using multiple Red Meter systems, process data is collected from multiple points within the process which enables statistical process control.

Easy To Use & Install

Designed to be simple and easy to use, the Red Meter Toro is a plug and play system which just works – empowering you to focus on what you do best. 


The Red meter delivers process intelligence that improves efficiency and increases bottom lines. Submit your details to request a live technical demonstration.