Fieldpiece ATIR3 Infrared Temperature Accessory Head

• Great for fast surface temperature measurement
• Select Degree F or Degree C Designed for HVAC/R, the Non-contact Infrared
• Select °F or °C
• Measures temperature without contact

The Fieldpiece ATIR3 Non-contact Infrared Temperature Accessory with Laser Sight, collects infrared energy (IR) and converts it to a mVDC signal that is proportional to the temperature being measured. The temperature measured is the average of all the temperatures in the 8:1 cone of viewability. The closer you are to the target, the smaller the area measured. The further away, the larger the area. The digital, non-contact ATIR3 converts the Fieldpiece “Stick” series meter, or electronic handle to a one-piece infrared, or IR, thermometer.

Designed for HVACR professionals, the Non-contact Infrared Temperature Accessory with Laser Sight, model ATIR3, measures infrared energy in it’s cone of view and converts it into temperature readings on your meter using the mVDC scale.

Auto off

When the ATIR3 is turned on and the auto off is switched on, you must hold MEAS to read temperature.

When auto off is switched off, the temperature will continue to be read until you move the power switch off. The MEAS button does nothing when auto off is disabled. It is particularly useful to have auto off disabled when data logging with the DL3.

Cone of view ability

The ATIR3 takes it’s measurement from a circle of a size determined by a simple ratio of 8:1. The diameter of this circle is 1/8 the distance between the target and the tip of the ATIR3. For example, if you’re standing 16 feet from your target, the size of the circle you’re taking the average temperature of will be 2 feet wide.

IR temperature measurement

When something is hot, it radiates infrared (IR) energy. The hotter it is, the more infrared energy. If there's enough of it, you can feel it. The ATIR3 infrared accessory head collects infrared energy from a cone-shaped viewing area and measures the total amount of energy collected. The ATIR3 converts the total energy measured to a temperature. Distance doesn't matter because the further you go from the target, the increase in area "seen" by the sensor exactly balances the loss of energy collected from a given area.

If you want to get the temperature of something small, such as a pipe, you must get close enough so the pipe takes up the whole viewing area circle. Otherwise the pipe and the background temperatures will be averaged into the reading.

The accuracy of many infrared temperature measuring systems is adversely affected by ambient temperature.

You need to be aware that if the target surface is reflective enough, it may reflect infrared from other objects. For example, if you take a reading of a shiny metal surface, the infrared energy of your face may reflect enough energy off the surface to affect the reading.