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2" Surface Mount Dial Dual Temperature Range Thermometers

DialTemp™ Surface Thermometers Dual Fahrenheit & Celsius Dials


Item# SUR-75

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $125.90
5-9 $119.61
10-24 $117.09
25-49 $112.05
50-99 $109.53
100+ $107.02

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Lead Time (If not in stock): 5 weeks
DialTemp™ Surface Thermometers Dual Fahrenheit & Celsius Dials SUR-75 SUR-75
  • Dual Fahrenheit and Celsius Dials
  • Quick Accurate Response
  • Magnets Provide Stable Mounting on Ferrous Surfaces

SUR-75 Model Options

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Process Temperature Range
Dial Diameter
Dual Range
Connection Type
Accuracy Value

  • Measurement Units °F/°C
  • Response Time Approximately 1 minute
Operating Instructions:
This unique, handy little gage is great for use in sensing the temperature of almost any surface. The bimetal sensing element is exposed to allow quick accurate response to surface temperature, but adequately shielded from damage by a protective cover and heat collector. For the most accurate reading this surface thermometer should be used in still air. Place the gage on the surface where you wish to know the temperature – dial face up with bimetal sensing element against the surface. The magnets will allow placement in any position on a ferrous surface. It can also be used on any other material with a horizontal surface. Allow about a minute for the sensing element to stabilize and then read the temperature. Higher or lower air temperatures surrounding the thermometer or a draft over the surface may slightly affect the temperature indicated.

Some Typical Applications:
Air ducts, boilers, cabinets, drums, engines, enclosures, fire boxes, manifolds, platens, plumbing, piping, refrigerators and many others.

Head Size: 5.08 cm (2')
Height: 1.27 cm (11/2')
Weight: 56.7 g (2 oz) approx
Dial: White background, blue marks and numbers
Case: Aluminum with optically clear crystal
Sensing Element: Precision calibrated bimetal coil
Accuracy: ±2% of full scale
Response Time: Approximately 1 minute
Mounting: Two magnets on back
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is this thermometer need to calibrate before installing?

Asked by: bentot
Hi Bentot! The thermometer does not need to be calibrated prior to being installed.
Answered by: AndrewA
Date published: 2020-10-07

Does the SUR-50 come with a calibration certificate?

Asked by: Tektronix
Thank you for your inquiry Tektronix. Unfortunately, the SUR-50 does not come with a calibration certificate.
Answered by: Application Engineer MC
Date published: 2021-10-08
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