All SS Diaphragm Sealed Pressure Gauge
With Direct Coupled ‘I’ Section Flange Type
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Special Features
- External zero adjustment (optional)
- Stainless steel case & measuring system
- Socket directly welded to case
- Dry and liquid filled version
- Standard followed EN 837-1 (for NS 100, 150)
- CE marking (as per PED 97/23/EC) (for NS 100 mm & 150 mm)
- The diaphragm is welded to the body to ensure separation of the filling fluid from the process medium
Application
- Diaphragm seals are designed to isolate the sensing element of pressure gauges and pressure switches from process fluids that they may be corrosive, viscous, sedimentous and / or with a high temperature.
- Chemical & Petrochemical industries
- For aggressive, hot, corrosive, environmentally hazardous or toxic media
- Food & beverage
- Pharmaceutical
- Process industry
Specifications
Standard Version : 100 mm, 125 mm & 150 mm
| Accuracy | ±1.0% of F. S. |
| Ambient temperature | -25°C to +65°C |
| Process temperature | -40°C to 200°C or as per fill fluid |
| Operating pressure range | 75% of Scale Value |
| Over pressure limit | < 100 bar : 125% of Max. Scale Value > 100 to < 250 bar : 115% of Max. Scale Value |
| Case & Bezel | AISI 304 SS (Bayonet Type) |
| Bourdon | AISI 316 SS or AISI 316L SS if NACE Option Select |
| Socket | AISI 316 SS (Directly Welded to Case) or AISI 316L SS if NACE Option Select |
| Movement | AISI 304 SS |
| Joints | Tig Argon Arc Welding |
| Protection | IP 68 |
| Dial | Aluminium, black graduation on white background |
| Pointer | Aluminium, black coloured Micrometer zero adjustable |
| Window | Toughened Glass |
| Blow off Disc | Neoprene |
| Gasket & Filling Plug | Neoprene |
Sealed Unit Specifications
| Seal type & Range | S53 = -1 to 0 kg/cm2 & 0 to 70 kg/cm2 (Standard) S38 = 100 kg/cm2 to 250 kg/cm2 |
| Instrument connection | 3/8” BSP (F) |
| Process connection | Flange |
| Fill fluid | Silicon Oil - DC 200 |
| Mounting | Direct (without capillary) or Remote Mounting With Capillary Optional |
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| Diaphragm | AISI 316L SS |
| Top Flange / Top Chamber | AISI 304 SS |
| Bottom Flange | AISI 316 SS |
| Nuts / bolts | AISI 304 SS |
| Sealing gasket | PTFE |
Dry But Fillable Version (Option DFG)
| Fillable Dampening Liquid | Glycerine 99.7% (Option - DFG) |
| Ambient Temperature | Maximum 65°C |
| Process Temperature | Maximum 65°C |
| Window | Plexi Glass |
| Other Features | Refer Specification of |
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| Standard Version |
Glycerine Filled Version (Option LFG)
| Accuracy | ±1.0% of F.S. |
| Ambient Temperature | Maximum 65°C |
| Process Temperature | Maximum 65°C |
| Window | Plexi Glass |
| Dampening Liquids | Glycerine 99.7% (others available as option) |
| Other Features | Refer Specification of Standard Version |
Temperature effect:
The variation of indication caused by effects of temperature is to be calculated by below formula; which is to be added in the specified accuracy while measurementFormula : ±0.04 x (t2 -11) % of F. S. where t1 = reference temperature (+20°C) and t2 = ambient temperature in °C.
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