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H-B Instrument™ Durac™ Bi-Metallic Dial Thermometers

Features 1/2 in. NPT threaded connection and polycarbonate lens.

Manufacturer: h-b instrument™  B61310-3900

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Catalog No. S02681

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Description & Specifications


Accuracy 1%
Certifications/Compliance NIST
Dial Size (English) 1.75 in.
Dial Size (Metric) 44mm
Display Dimensions 1.75 in. dia. (4.4cm)
For Use With (Application) Petrochemical, oil and gas, waste water, pharmaceutical, compost, food and beverage storage and processing, asphalt, mining, utilities, automotive, marine, photographic
Immersion Length 50mm in liquids or 100mm in gas
Includes Stainless Steel probe, multilanguage statement of test and calibration, 0.5 in. NPT threaded connection, beaker clip with built in adjustment tool
Length (English) Overall 4.9 in.
Length (English) Probe 5 in.
Length (Metric) Overall 124mm
Length (Metric) Probe 125mm
Lens Material Polycarbonate
Material Metal
Subdivision 1°F
Temperature Range (English) 25° to 125°F
Temperature Range (Metric) Not Applicable

  • External adjustment allows for simple field calibration
  • For correct temperature reading, stem must be immersed at least 50mm in liquids and 100mm in gases
  • Each thermometer is individually packaged with a multi-language (English, French, German, Italian, Portuguese and Spanish) Statement of Test and Calibration

  • Part No 21596 features 3/8 in. NPT threaded connection which is ideal for industrial installations in tank or pipe lines
  • 1.7 in. dial size thermometers (except Part No 21596) do not have NPT threaded connections
  • They feature a beaker clip with built in recalibration adjustment tool