NovaLynx Corporation produces a variety of temperature sensors including heat flux sensors used in air, soil, and water. The company's various temperature sensors feature operating ranges of -40 to 140F, 0F to 300F, -50C to 100C, and -50C to 50C.

Campbell Scientific designs and manufactures soil heat flux sensors that feature nominal resistance of 2 W, a temperature range of -30 to 70C, and measurement range of plus or minus 2000 W m2. The self-containing soil heat flux sensors feature expected accuracy of plus or minus 3 percent of reading. The company also produces heat, vapor, and CO2 flux sensors including open-path or closed-path gas analyzers, fine wire thermocouples, and krypton hygrometers.

Dynamax Inc. produces self-calibrating heat flux sensors for soil heat flux measurement applications. These sensors feature nominal resistance of 2 h, a temperature range of -30 to 70C, and measurement accuracy of plus or minus 3 percent.

Kipp & Zonen manufacture scintillometers that measure atmospheric turbulence by delivering surface heat fluxes and evapo-transpiration data. The company's LAS MKll scintillometer can derive sensible heat fluxes spanning distances of 100 m to 4.5 km.

Avalon Corp. designs soil heat flux sensors that measure heat flow in soils. The sensors feature accuracy of plus or minus 5 percent and a temperature range of -40 to 80C. The sensors thermopile is encapsulated in high thermal conductivity epoxy, which prevents ground potential pickup.