Pressure Measurement and Control Equipment

Pressure Gauges

Pressure gauges are mechanical instruments that indicate the pressure at the point of connection with a pointer and dial, without needing energy. The category covers dry bottom and back connection gauges, glycerine-filled stainless models, panel gauges, compound gauges and capsule diaphragm types measuring in millibar.

In all-stainless series the measuring element and connection are 316L; NS 100 and NS 160 dials measure with class 1.0 and the NS 63 dial with class 1.6 accuracy. Glycerine filling damps pointer oscillation but lowers the permissible medium temperature from 200 °C for the dry type to 100 °C.

Class 1.0NS 100 / 160

0…1600 barwidest scale (NS 160)

IP65degree of protection

+200 °Cmedium temperature (dry type)

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Main Applications

Monitoring negative pressure on pump suction with a compound gauge
Working pressure on compressors, air receivers and pneumatic lines
The 400–600 bar range on hydraulic units and presses
Panel gauges on machine and control panels
Millibar level on fans and air ducts with capsule types
IP65 stainless-case types outdoors and in wash-down areas

Technical Data

Measuring element	Bourdon tube, 316L stainless
Dial sizes	NS 63, 100, 160 mm; Ø40 and Ø50 types also available
Scale ranges	NS 63: 0…1 – 0…1000 bar · NS 100: 0…0.6 – 0…1000 bar · NS 160: 0…0.6 – 0…1600 bar
Accuracy class	NS 63: 1.6 · NS 100 / 160: 1.0
Steady pressure limit	NS 100 / 160: full scale · NS 63: 3/4 of full scale
Fluctuating pressure limit	NS 100 / 160: 0.9 × full scale · NS 63: 2/3 × full scale
Short-time pressure	NS 100 / 160: 1.3 × full scale · NS 63: full scale
Ambient temperature	−40…+60 °C (dry) · −20…+60 °C (glycerine)
Medium temperature	Max. +200 °C (dry) · +100 °C (glycerine)
Temperature effect	Max. ±0.4% / 10 K (of full scale)
Process connection	NS 63: G1/4 B · NS 100 / 160: G1/2 B
Protection / standard	IP65 (EN 60529) · EN 837-1

Material Options

Part	NS 63	NS 100	NS 160
Measuring element and connection	316L (connection 1.4571)	316L	316L
Movement	Stainless steel	Stainless steel	Stainless steel
Dial / pointer	White aluminium / black aluminium	White aluminium / black aluminium	White aluminium / black aluminium
Case	Stainless, pressure relief at 12 o’clock	Stainless, pressure relief at circumference	Stainless, pressure relief at circumference
Window	Polycarbonate	Laminated safety glass	Laminated safety glass
Accuracy class	1.6	1.0	1.0

Note: Technical data are from the manufacturer data sheet of the all-stainless Bourdon tube series; class, temperature and material values of brass-movement, panel and capsule gauges vary by model. On steam lines a siphon and a gauge cock must be fitted ahead of the gauge.

Advantages

Pressure reserve

NS 100 / 160 dials withstand 1.3 times full scale for short periods.
The scale can be chosen according to pressure fluctuations.

Oscillation damping

Glycerine filling reduces pointer vibration.
Reading becomes easier at pump and compressor outlets.

Pressure relief case

The stainless case has a pressure relief section.
Pressure that may build up inside the case is vented.

Dial variety

Dials from Ø40 to Ø160 mm.
Back connection panel models are available.

Construction and Design Features

316L Bourdon tube and connection
Stainless steel movement
White aluminium dial, black aluminium pointer
Stainless case with pressure relief; laminated safety glass or polycarbonate window
99.7% glycerine filling on the filled type

Send us the scale range, dial size, connection position and filling preference via the Request a Quote form and we will prepare the gauge together with siphon and cock.

How to Choose?

Set the full scaleSteady working pressure must not exceed 3/4 of full scale on NS 63 or full scale on NS 100 / 160.
Look at the pressure profileFor fluctuating pressure, observe the 0.9 × full scale limit on NS 100 / 160.
Choose the fillingUse glycerine-filled types on vibrating lines and dry types for media above 100 °C.
Choose dial and classFor more precise reading prefer NS 100 or NS 160 dials with class 1.0.
Match the connectionUse a cock or siphon with G1/4 for NS 63 and G1/2 for NS 100 / 160.