Grain Dryers

The concept of grain drying is relatively simple with different types of systems incorporating:-
  • A large fan and burner which forces heated air into a void beneath a vented floor of an area into which up to 20,000 bushels of grain have been stored.  The hot air flows through the vents and up through the grain.  Vertical augers may continuously mix the grain in an attempt to ensure uniform drying.
  • Continuous flow systems (Horizontal or Vertical) - whereby wet grain is exposed to heated air which is forced into a plenum area and equally distributed through individual columns of metal mesh walls.

In all grain drying systems regular and detailed maintenance is essential to aid continuous uninterrupted operation of the dryer.

There are many potential alarm conditions that can be generated during the use of a grain dryer:

  • Very fine particles of grain may build up close to the open flame burner and cause reduced air flow or improper sensor operation
  • Where a malfunction of temperature control equipment allows a burner to continue operation after the grain is dry, elevated temperatures capable of igniting the grain can occur
  • Mechanical failure of fan bearings, auger bearings or gearboxes can cause frictional heating capable of igniting the grain
  • Collapse of the grain bin floor allows grain to be in close proximity to the burner plenum
  • When conditions dictate that extremely high moisture grain be harvested, the grain can sometimes be damaged during the process.  The damaged grain has more fine particles than that harvested at times of lower moisture content
  • Worn or improperly adjusted harvesting equipment can cause excessive damage to the grain
  • In all types of grain dryers the possibility of over-heating at electrical connections can be an additional source of ignition


Digital (LHS) & Analogue Linear Sensing

The means to locally monitor for temperature changes (rise or fall) at "point of risk" and at ANY /ALL locations along an installed length of temperature sensitive cable - regardless of environmental conditions.

Fibre Optic Linear Temperature Sensing

Line detection of temperature change and rate of rise along multi -kms lengths of small diameter fibre optic cable. It provides high performance near real time temperature Sensing and Alarm functionality with standard communication interfaces.

Proline 'Nero' Water & Moisture Detection

Rapid detection of the smallest of leaks within Industrial, Commercial Environments by a recoverable cable. Designed to provide 24 hours/day x 7 days/week continuous monitoring of areas where even the smallest of leaks can prove disastrous. Essential where undetected leakages can cause serious damage to today’s complex electrical, communications and computer networks.



A U.K. registered Company with hands-on product development, global market & application experience dating from the 1970's.

Proline equipment conforms to all NFPA 72 and EN54 standards requirements for linear detection.

Pneumatic, Digital, Analogue, Fibre Optics, Measuring Point System, Aspirating Systems...regardless of your linear detection requirement PROLINE will be happy to assist you.