Vibration-resistant model type BF


Product description

Possible areas of application

Vibration-resistant model type BF

Thermometer for use in applications exposed to strong vibrations, e.g. on large diesel engines. The glass insert is glued into a steel nickel plated tube and this is spring-mounted in the casing. Highest possible resistance to column separation. Available as Type 271 BF and 291 BF, display ranges 0...100 °C and 0...600 °C.



Nominal size 150 and 200 mm, aluminum, V-shaped, completely polished, gold-coloured anodized (or silver-coloured upon request). Numerals of reading scale printed on the right side. Printing black-colored for easy readability. Straight types adjustable to any desired viewing position and locked by brass nut, wrench size 22.

Glass inserts (Capillaries)
Capillary tube of solid glass, bar-shaped, prismatic (optic enlargement of the column, except for high temperature types), diameter approx. 8 mm, oval opening, with yellow background for mercury* and white background for blue fluid column. Scale is deeply burnt in black, thus being absolutely resistant. The main graduations, which correspond with the printing on the casing, are especially clearly outlined.

Thermometric liquid
For display range 0...120°C blue thermometric fluid (“Fü”); for display ranges starting at 0...300 °C only mercuryfilling is technically possible.

Immersion tube
Standard version made from steel. The diameter of the type “B” immersion tube is 12 mm; the wall thickness 1,5 mm.

Scale intervals and error limits
SIKA thermometers fulfil the requirements of DIN 16195 „Requirements and testing of industrial glass thermometers“. Scale intervals and error limits are defined in relation to the casing size and the display range.


* Legal advice

According to regulation no. 847/2012 of European Union, thermometers with mercury filling are only bound for export outside the EU. Placing them on the market inside the EU after April 10th, 2014 is prohibited. Concerned are industrial thermometers and glass inserts with display ranges 0…300°C and higher, only. In this case, we are recommending the use of our dial or digital thermometers.


Technical features

Technical features

Nominal size
150 mm
200 mm
Thermometer type Straight
Display ranges

0...100 °C
0...600 °C

Immersion tube length

63 mm
100 mm
160 mm
250 mm
Fixed male thread

G½ / SW27
G¾ / SW32
M20 x 1,5 / SW27
M27 x 2 / SW32

 Options (on request, at extra cost)

  • Other measuring ranges
  • Other immersion tube lengths and materials
  • Other connection threads
  • Silver-coloured casing
  • Thermometer completely free of non-ferrous metal
  • Limit thermometer with 1 pair of limit indicators - adjustable to any interval
  • Thermometer with sealing sleeve - reduces the penetration of moisture into the immersion tube (outdoor mounting, low temperature applications)



Contact us

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