Thermopile Sensor Application Circuit

A thermocouple is an electrical device consisting of two dissimilar electrical conductors forming an electrical junction a thermocouple produces a temperature dependent voltage as a result of the thermoelectric effect and this voltage can be interpreted to measure temperature thermocouples are a widely used type of temperature sensor.

Thermopile sensor application circuit.

Thermopile detector for the desired device and performance. Thermopile sensors application note te connectivity sensors an thermopile sensor page 10 2018 4 reference sensor the reference sensor is used to measure the temperature of the sensor. The thermopile sensor consists of a series of 116 thermoelements forming a sensitive region size of 545 µm diameter. It is needed according the formula describing the thermopile voltage in figure 1.

Energy water gas monitoring of power station search for fluid leaks control of storage reservoirs detection of occupants in room materials control of chimney stacks. Thermopile infrared ir non contact temperature measurement sensors are available with various lens and filters allowing use in multiple applications from industrial pyrometers to climate controls and medical devices. For starters take a look at a thermopile amplifier design that was developed by neil albaugh who used by an applications engineer in this department for many years. The circuit was designed at least a decade ago and used the opa335 auto zero op amp.

There are lots of cool applications they can be used for including motion sensors temperature probes fire alarms heat flow detectors robot sensors forge temperature monitors or low resolution thermal. Commercial thermocouples are inexpensive interchangeable. It provided very high performance in the circuit. The following typical applications will help you when selecting the type of thermopile sensor.

A thermopile is an electronic device that converts thermal energy into electrical energy it is composed of several thermocouples connected usually in series or less commonly in parallel such a device works on the principle of the thermoelectric effect i e generating a voltage when its dissimilar metals thermocouples are exposed to a temperature difference. Application circuit circuit 1. The sensor is hermetically sealed into a to 5 metal. Application hints temperature calculation and compensation the heimann sensor integrated module htia consists of a fast response thermopile sensor and an asic as specific integrated circuit for the signal processing and on chip calibration.

R2 5v a1 a3 a2 adder vout c3 r9 r8 c2 thermopile thermopile r1 r7 c1 2 4 r13 r10 r11 r12 5v c4 reference. Heimann thermopile modules are non contact thermometers comprising a high sensitive thermopile sensor and a signal conditioning circuit in the same housing. The thermopile modules can be supplied factory calibrated to a defined object temperature range with or without internal temperature compensation reducing ambient temperature influence or. To reach enough accuracy a reference sensor in a thermopile component must be.

A reference sensor is designed into the package as a reference for compensation.