Specifications and Features

RayngerST
ST20 and ST30 ProPlus Target Spot Sizes
D:S = 12:1 at Focus Point
Specifications
Temperature Range
ST20 Pro -32 to 400˚C (-25 to 750˚F)
ST30 Pro -32 to 545˚C (-25 to 950˚F)
Accuracy 1% or ±1˚C (±2˚F), whichever is greater above 23˚C (73˚F)
@ 23˚C (73˚F) ambient ±2˚C (±3˚F) @ -18 to 23˚C (0 to 73˚F)
operating temperature ±2.5˚C (±4˚F) @ -26 to -18˚C (-15 to 0˚F)
±3˚C (±5˚F) @ -32 to -26˚C (-25 to -15˚F)
Repeatability ≤±0.5% or ≤±1˚C (±2˚F) whichever is greater
Response Time ≤0.5 second (95% of reading)
Ambient Operating Range 0 to 50˚C (32 to 120˚F)
Power 9V Alkaline or NiCd Battery
Weight 320g (11oz)
Features ST20 Pro ST30 Pro
Distance to Spot (D:S) 12:1 12:1
Emissivity pre-set at 0.95 pre-set at 0.95
Laser Sighting single point offset 8 point circular
MAX Temperature Display ✔✔
Display Hold (7 seconds) ✔✔
LCD Backlight ✔✔
Display Resolution 0.2°C (0.5°F) 0.2°C (0.5°F)
Hard Carrying Case ✔✔
Options/Accessories
• Nylon Holster
• NIST Traceable Calibration Certificate
Raytek, the Raytek logo, and Thermalert are registered trademarks
of Raytek Corporation.
©2001 Raytek Corporation, Printed in USA, 3/01 Rev. A
Specifications subject to change without notice. 3-1022
Worldwide Headquarters
Raytek Corporation
Santa Cruz, CA USA
Tel: 1 831 458 1110
800 866 5478 (U.S. and Canada only)
Fax: 1 831 425 4561
www.raytek.com
5710 Kenosha Street
Richmond, Illinois 60071 USA
Phone: +1 (815) 678-2211
FAX: +1 (815) 678-3961
Internet: www.watlow.com
e-mail: info@watlow.com RIC-20-0401

For Sales and Ordering Contact: For Service and

Warranty Contact:

Your Authorized Watlow Distributor Is: