#53: IRt/c quick selection guide

1. How Large Is Your Target?

• If it is smaller than 2 cm (,8”), you must select either the micro IRt/c, micro IRt/c.4, IRt/c.2G, IRt/c.01, IRt/c.03, IRt/c.1x, IRt/c.3x, or focused model
• If it is smaller than 8 mm (.3”) you must select the IRt/c.3x or focused model
• If it is larger than 2 cm (.8”), select any of the sensors

2. How Close Can The Sensor Be Mounted?

• See Tech Note #36, Tech Note #41, and Tech Note #55 and use the field-of-view drawings showing the distance from the sensor versus the approximate diameters of the spot size.
• For example, the IRt/c.3x, at a distance of 3X has a spot size of 1X (at a distance of 1,5 meter, the spot size is 0,5 meter, at a distance of 1 foot, the spot size is 4 inches).
• See Tech Note #29 if you wish to position an IRt/c at an angle other than 90° from your target surface.
• If using a focused model, refer to individual model specifications for optimum distance.
  

3. What Is The Ambient Temperature Where The Sensor Is To Be Placed?

• If ambient is less than 70°C (160°F) choose any sensor
• If ambient is less than 85°C (185°F) choose any sensor except micro IRt/c, IRt/c.01 and IRt/c.03.micro IRt/c, IRt/c.01 and IRt/c.03
• If ambient is less than 100°C (212°F) choose any sensor except IRt/c.01 and IRt/c.03
• If ambient is greater than 100°C (212°F), see Tech Note #35 for air cooling flow requirements for the IRt/c Cooling Jacket Kit and IRt/c.XXX built-in air purge/cool system.
• If ambient is greater than 260°C (500°F), it is usually best to specify an IRt/c or IRt/c.2 sensor along with the Cooling Jacket Kit and utilize the water cooling feature. (Cooling the smaller sensors with water is less expensive over time, compared to cooling the IRt/c.5 with air.)

4. What Is Your Target Temperature?

• Use Temperature Selection Guide. See Tech Note #49

5. Choosing A Temperature Controller/Input Device?

• See Tech Note #37 and Tech Note #14 for help in selecting or using available thermocouple input devices