PRESSURE MEASUREMENT

Laboratory test pressure gauges

Analog bourdon tube pressure gauges with particularly high measuring accuracy
For test and comparison measurements
Accuracies from ±0.6% FS to ±0.1% FS
Scale with fine graduation, balanced knife pointer

01.27 - Cl. 0,1
Case diameter: DS 250
Accuracy: ±0.1% FS
from 0...1 to 0...1,000 bar + -1...0 bar
(0...1600 bar in Cl. 0,25)
Die-cast aluminum housing
Anti-parallax mirror band

01.17 - Cl. 0,25
Case diameter: DS 160
Accuracy: ±0.25% FS
from 0...0.6 to 0...1,000 bar + -1...0 bar
Bajonet ring housing
Anti-parallax mirror band
Safety execution "S3"

01.15 - Cl. 0,6
01.16 - Cl. 0,6
Case diameter: DS 160
Accuracy: ±0.6% FS
from 0...0.6 bis 0...1,000 bar + -1...0 bar
Bajonet ring housing
Anti-parallax mirror band
01.16: safety execution "S3"

017.1.160 - Cl. 0,6
Case diameter: DS 160
Accuracy: ±0.6% FS
from 0...1 to 0...1,000 bar + -1...0 bar
Bajonet ring housing
Available ex stock

Information about analogue test pressure gauges

Precision pressure gauges are equipped with a Bourdon tube as the measuring element - either circular or helical, depending on the measuring range.

Bourdon tubes always have an oval cross-section (the cross-section must not be round). The tube wall thickness and the geometry of the cross-section determine the pressure measuring range.

If pressure is applied to the precision pressure gauge, it is greater on the inside of the Bourdon tube than on the outside. This causes the Bourdon tube material to change its oval cross-section towards a circular shape, causing the Bourdon tube to bend slightly and its free end to perform a linear movement. This spring movement is transmitted to a pointer mechanism via a pull rod. The pointer mechanism converts the linear movement into a rotary movement, which moves the pressure gauge pointer on the scale.