TGL/TGK V-Form Glass Thermometer

Brand: KOBOLD Instruments, Inc.

Liquid-in-glass thermometers for machines are economical and rugged. The use of high-quality glass enables the thermometer to maintain a steady measuring accuracy and repeatability. The liquid-in-glass thermometers for machines comprise a rugged protective casing, an indicating capillary and the mounting fitting with rigid connection.

The protective casing is made of brass-colored anodised aluminium or of reasonably-priced gold-colored plastic for 150 mm lengths.

Scale numbering is black. The indicating capillary is backed in white with a wide easy-to-read indicating column filled with blue indicator fluid. The graduation is diffused into the glass and is thus resistant to aggressive service environments. The indicating accuracy is 1% of full scale value.

The capillary is manufactured from PTB approved thermometer glass, N16B or 8409 Supremax glass. The mounting fittings are delivered according to DIN form B with G ½ or ½" NPT external thread.

The bulbs are made of solid brass up to a maximum immersion length of 63 mm. The bulbs are hard soldered for longer immersion lengths. Max. operating pressure is 15 bar. The standard liquid-in-glass thermometers for machines are available in instrument lengths 200, 150 and 110 mm in straight and in 90° angular form.



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  • Air Conditioning & Refrigeration
  • District Heating Power Stations
  • Engine Manufacturing
  • Equipment & Plant Engineering
  • Heating Systems & Kilns

BSP Connection

  • G 1/2" Male

Bulb Material

  • Brass

Enclosure / Body Material

  • Aluminum
  • Plastic

NPT Connection

  • 1/2" NPT Male


  • 90° Angular Form

Supply Pressure - Maximum

  • psi: 217.557 (kPa: 1,500, bar: 15)

Temperature Range

  • -60° to 200° C (-76° to 392° F)


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