Pressure Gauge
Pressure gauge, instrument for measuring the condition of a fluid (liquid or gas) that is specified by the force that the fluid would exert, when at rest, on a unit area.
Omika provide a variety of pressure gauges to cater to a range of industrial application :
Bourdon tube pressure gauge
An elastic (circled) measuring element (bourdon tube) will be soldered or welded into a socket; the free end being firmly closed. A change in pressure causes the measuring element into a deflection. This deflection of the free end of the bourdon tube is proportional to the applied pressure and will be transmitted to a rotary geared movement. This movement carries a pointer and indicates the pressure on a dial with 270° angle.
Bourdon tube gauges are used for the measurement of high pressure up to 1000 bar and vacuum to -1 bar of gases, steam and fluids. Accuracy is between ± 0,1% and ± 2,5% of full scale deflection. The bourdon tube can be made of brass, stainless steel or Monel in case of aggressive medium.
The ambient temperature shall be -40…+60°C; the medium temperature not higher than +60°C using brass connection and +200°C using “UNI” type gauges made of st. steel.
Pressure Gauge Specification
| Dial Size | 63 mm, 100 mm, 150 mm, 250 mm |
| Pressure Range | 0.6 / 1 to 2,500 Kg/cm2 (Bar) |
| -1 to 0/0.6/1.5/5 Kg/cm2 (Bar) | |
| Accuracy | 1%FS (1.6% for 63mm) |
| Pressure type | Gauge, vacuum and compound |
| Process Connection | Lower, Back |
| Material | Bourdon Tube : SS316 (Optional SS316L etc.) |
| Socket : SS316 (Optional SS316L etc.) | |
| Case & Bazel : SS304 (Optional SS316 etc.) | |
| Movement: SS304 | |
| Weather Protection | IP65 / IP66 / IP67 |
Diaphragm pressure gauge
A thin, concentrically corrugated diaphragm will be fixed between two flanges. The diaphragm will be loaded with the process pressure on one side and elastically deflects from its normal position. This way is proportional to the applied pressure and will be transmitted to a rotary geared movement. The movement carries a pointer and indicates the pressure on a dial with 270 angle. Diaphragm pressure gauges are used for the measurement of pressure up to 40 bar and vacuum to -1 bar of gases, steam and fluids. Accuracy is ± 1,6% of full scale deflection.
The diaphragm can be protected against aggressive medium using foils made of Tantalum, Hastelloy C etc. or PTFE-coating. The connecting part can be made or protected with suitable material, i.e. SS 316L, PP, PVC, PVDF etc. Diaphragm pressure gauges with open measuring flange are perfectly suited for high viscous, crystallizing and solid matter containing medium. Diaphragm pressure gauges can be easily supplied with an overload safety.
The ambient temperature shall be -20…+60°C; the medium temperature not higher than +100°C.
Diaphragm Seals Specification
| Type | Threaded / Sanitary / Flanged / Volumetric / I-Section |
| Material | Seal : SS316, SS316L , Inconel 600, Monel 400, Hastelloy C, Tantalum etc. |
| Bottom Chamber : SS316, SS316L , Inconel 600, Monel 400 etc. | |
| Flange : SS316, SS316L etc. | |
| Coating | PTFE, HALAR etc. |
