Model IR3 & IR4 Infrared Temperature Thermometers

Up To 20:1 Distance-to-Target Size Ratio, Thermocouple Input

The Model IR3 and IR4 Infrared Thermometer utilizes infrared technology for precise, non-contact temperature measurement. For standard applications, the 12:1 distance to target ratio on the IR3 provides accurate measurements within 2% of reading. When measuring smaller objects or at greater distances, the 20:1 distance to target ratio of the IR4 can provide measurements within 1% of reading. Both models have single point laser sighting for aligning the beam to the target. In addition, both models can display maximum, minimum, differential and average temperature measurements. Adjustable emissivity allows the thermometers to measure the temperature of most surfaces without any external calculations. A K-type thermocouple can plug into the handle of the thermometers in order to take surface and internal temperatures simultaneously. Audible alarms can be used for safety checks.

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

Model Description Usually Ships* Price Order
Price: $117.00
Infrared temperature thermometer. $117.00 Order
Ships: 2-3 Weeks
Price: $185.00
Infrared temperature thermometer. 2-3 Weeks* $185.00 Order


Measurement Range:
-76 to 932°F (-60 to 500°C).
Operating Range:
Ambient: 32 to 122°F (0 to 50°C).
IR3 ±2% of reading or 4°F (2°C), IR4 ±1% of reading or 1.8°F (1°C), whichever is greater.
Response Time:
1 second.
Distance to Target:
12:1 (IR3), 20:1 (IR4).
Emissivity Range:
0.95 adjustable; 0.05-1.0.
Additional Input:
Type K.
Power Requirements:
(2) AAA alkaline batteries, included, user replaceable.
Battery Life:
180 hours (without laser or LCD backlight).
6.3 oz (179 g) with batteries.
Agency Approvals:




What is emissivity?
The ratio of energy emitted by an object to the energy emitted by a blackbody at the same temperature. The emissivity of an object depends upon its material and surface texture:a polished metal surface can have an emissivity around 0.2 and a piece of wood can have an emissivity around 0.95.

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