Hog Fuel Moisture

Why Moisture Control Matters?

Hog fuel is wet wood material or waste. Essentially, it is a combination of some or all of the following: scrap wood of any species, wood shavings, sawdust, bark and needles. It is used as a feedstock for large industrial or small size utility boilers which have a capacity that usually exceeds that which is supplied by a single wood processing facility. Moisture content of hog fuel affects its burning efficiency and, consequently, the air/ fuel ratio of the boiler.

It is very important that the operator is aware of the moisture content of the feedstock at all times so control decisions can be made on real time information. Different boilers will have different optimum moisture requirements. Typically, the moisture content will not exceed 55% or be lower than 25%. Measurement Location Measurements are typically made on-line, with the gauge mounted approximately 8” above the feed conveyor at a location shortly after the hog fuel has been turned. For example, after the product has transferred from one belt to another. If dry and wet hog fuels are being blended to produce feedstock of a specific moisture value, it is important that they are well mixed so the on-line measurement is representative of the bulk.

Control Moisture Levels Properly

#hog fuel moisture


Our equipment never comes into contact with the product, allowing for less waste

zero drift

Our sensors are guaranteed not to drift over time – which saves time and money

closed loop

Create a closed-loop process by tying a moisture sensor into your PLC. Full control over the line!

no recalibrations

We’ve mastered the art of moisture sensors – your unit will never need to be recalibrated for the same product twice!

Stand Above the Competition

  • Typical accuracy is about ±0.2% moisture.
  • Typical analog range is 0-75% moisture.
  • Outputs can be adjusted to optimize PLC or recording requirements.

Competing technologies pale in comparison to the results and accuracy provided by MoistTech Corp:

  • Instant, non-contact, continuous moisture measurement.
  • Ability to monitor the product even with small gaps in product flow.
  • Unaffected by ambient light, ensuring accuracy.
  • Ideal for installations on chain conveyors and screw conveyors.

Dust from the product is not usually problematic. However, in extremely dusty environments, we recommend installing an air purge system to prevent material accumulation on the sensor’s window.


Installation Tips

Mounting the hog fuel moisture transmitter several inches above the conveyor enables continuous process monitoring. Users can control hog fuel moisture content manually or automatically during the combustion process.

Sensor calibrations, measurement wavelengths, algorithms, and optical requirements are factory pre-set. Typical accuracy is about ±0.2% moisture, with a typical analog range of 0-75% moisture. Outputs can be adjusted to optimize PLC or recording requirements.


We offer service and support throughout the world for our moisture measurement sensors and would be happy to connect you with a rep in your area. Contact us today for more information!

Understand the Process

Many biomass materials are produced as byproducts, residues or wastes from some other process, operation or industry. Most of these have a valuable energy content that can usefully be channeled into fuel.