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Raytek ST25 Portable infrared thermometer for automotive diagnostics.

Temperature variances can indicate common mechanical and electrical problems. Diagnose them faster, safer and easier with the Raytek ST25 AutoPro, the non-contact infrared thermometer specially designed for the automotive professional. Raytek's ST25 AutoPro features SmartSight - two lasers merge into a single laser point to indicate a half inch (13mm) target, an ideal spot-size for small area measurements often required for automotive diagnostics. AutoPro can read temperatures up to 535°C, and can accurately measure in low light conditions, illuminating the work area with a built-in LED flashlight. AutoPro also features an illustrated, step-by-step user manual with detailed instructions for many common automotive diagnostic procedures, including engine misfires, exhaust and emissions, cooling systems and heating and air conditioning systems. Get the thermometer designed especially for automotive technicians - the Raytek ST25 AutoPro.

  • For use in many applications
  • Smartsight: Bright dual laser sighting system that merges into a single laser point when the unit is at the optimal distance from the object being measured
  • Specifically designed for today's automotive, diesel and transportation technicians
  • Bright illumination flashlight: White LED that conveniently illuminates the work area when the trigger is pulled
  • Removable, powerful magnet, attached to the base of the unit for handy, safe storage
  • Maximum temperature display
  • Includes backlit LCD Display
  • Tripod-mountable
  • Hard Case
  • Includes Illustrated Manual

Typical Applications
Typical Applications

Spot size

The relationship between distance and spot size is 16:1 at the focus point (200mm: 13mm or 8 inches: 0.5 inch). As the distance (D) from the object decreases or increases, the spot size (S) of the area measured by the unit becomes larger. The spot sizes indicate 90%-encircled energy.

Temperature Range:-32 to 535°C (-25 to 999°F)
Accuracy:(assumes ambient temperature of 23°C (73°F))
–32 to –26°C (-25 to -15°F):±3ºC (±5ºF)
-26 to -18°C (-15 to 0°F):±2.5ºC (±4ºF)
-18 to 23°C (0 to 73°F):±2ºC (±3ºF)
23° to 510ºC (73º to 950ºF):±1% of reading or ±1ºC (±2ºF), whichever is greater
Above 510ºC (950ºF):±1.5% of reading
Repeatability:¡¾0.5% or ¡Â ¡¾1¨¬C (¡¾2¨¬F), whichever is greater
Response Time:¡Ü 0.5 second (95% of reading)
Spectral Response:8-14µm
Emissivity:Pre-set at 0.95
Ambient Operating Temp:0 to 50ºC (32 to 120ºF)
Relative Humidity:10-90%
Storage Temperature:-20 to 60ºC (-13 to 158ºF) without battery
Weight/Dimensions:360g (12oz) 205 x 160 x 55mm (8x6x2 in)
Power:9V Alkaline or NiCd Battery
Battery Life (Alkaline):4 hrs w/laser, flashlight & backlight on
20 hrs w/laser, flashlight & backlight off
Laser (Class II):SmartSight™ dual laser sighting system
Typical Distance to Target:200 mm-600 mm (8 inches to 2 feet)
Distance to Spot (D:S):Optimized for use at 8 inches
Approximately 16:1 at focus point
Display Hold:7 seconds
Temperature Display:ºC or ºF selectable
Display Resolution:0.2ºC (0.5ºF)
Work area illumination:Bright white LED (7100 millicandle)
Warranty:1 year
Additional Options:NIST Traceable Calibration Certificate

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