R20
Bourdon tube pressure gauge, stainless steel with alarm contact
Service intended
These alarm contacts are intended to make or break an electrical control circuit relative to the position of the instruments pointer.The functions of the different contacts may be chosen depending on application. Points of contact actuation are adjustable over the full extension of the scale graduation. For points with high, dynamic load, fast load alternation and pressure peaks or vibration we recommend a special oil filled type (only available with round case model).

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Downloads |
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Technical Details
Operating instructions Type I Inductiv contact
Operating instructions Type E Electronic contact
Operating instructions Type M Magnetic snap-action contact
Operating instructions Type S Sliding contact |
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Alarm contacts |
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Sliding contact |
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Magnetic snap-action contact |
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Electronic contact for SPS |
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Inductive contact |
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Pneumatic contact |
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Technical data |
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Construction |
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EN 837-1 - Code S1 |
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Case |
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Ø 60, 100, 160 and 250 mm stainless steel with pressure relief |
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Degree of protection |
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IP 54 per EN 60 529 / IEC 529 |
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Pressure connection |
Ø 60 mm : G1/4B, 316L
Ø 100, 160 and 250 mm : G1/2B, 316L |
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Pressure element |
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Stainless steel 316L |
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Movement |
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Stainless steel |
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Pointer |
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Aluminium, black |
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Dial |
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Aluminium, white, Scale and lettering black |
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Window |
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Laminated safety glass |
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Accuracy class |
Ø 60 mm : 1,6
Ø 100, 160 and 250 mm : 1,0 |
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Temperature error, Tref 20°C |
Rising temperature : +0,3% FS / 10 K
Falling temperature : -0 ,3% FS / 10 K |
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Ambient temperature Tmin / Tmax |
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- 25°C ... + 60°C |
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Medium temperature Tmax |
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+100°C |
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Working pressure |
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Steady : 1,0 x full scale value
Fluctuating : 0,9 x full scale value
Short time : 1,3 x full scale value
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Optional extras |
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see: Technical Details |
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Chemical seals |
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