Collection: Differential Thermostats

Differential Temperature Controllers

All of our differential controllers come with 2 x NTC sensors supplied. In most environments the sensor wiring can be easily extended using 0.5mm CSA cable. Sensors can be mounted directly to pipework where good conduction of heat is possible. The provided sensors are also suitable for general measurement in free air.

Options are available for different controller supply voltages. Novus controllers will operate on 12~24V or 100-240V depending on which model is selected. There are also options for RS485 communications which allow serial data exchange with the unit.

Where Are Differential Temperature Controllers Used?

This type of temperature control is suited to applications where the difference between the two measured values should trigger a control output or alarm. The objective in a control scenario is normally to maintain a certain difference between the two measurement points. When the differential is exceeded a control action is initiated via the built in relays.

Control applications include: solar heating, air destratification, grain drying, climate control in buildings and animal enclosures. Typically the outputs are wired to pumps, fans or valves. Either directly or via components such as contactors and relays.

Differential thermostats can also be used for general monitoring of two temperature sensors. Models equipped with RS485 can be linked to Data Loggers, BMS and SCADA systems to provide trending and historical logs.

Can You Supply Enclosures, Extension Cable & Spare Sensors?

We are frequently asked about the best methods to mount Differential Controllers. One of the simplest is to use a standard blank enclosure with suitable IP rating. We stock products from Wiska such as the 818A or Indubox 1308AR/W.

We also sell extension cable for the sensors (by the metre) and replacement sensors.