Pressure Gauges

diaphragm sealed

MICRO diaphragm seals are used wherever it is necessary to avoid direct contact of the pressure gauge with the measured medium, like 1) The process fluid being measured would contain solid particles or viscous which would normally clog the pressure element. 2) Pressure element materials capable of withstanding corrosive effects of certain fluids are not available. 3) The process fluid might freeze due to changes in ambient temperature and damage the element. This is a common occurrence in the chemical, petrochemical, food and paper industries or wherever special process technique takes place. Chemical seals transmit the pressure from a process fluid to a pressure instrument and act as an isolating element. In most cases pressure instrument is directly mounted on the diaphragm seals, but the separation is possible through installing a flexible connection line or capillary tube between diaphragm seal and pressure instrument. As the entire system is filled, the connection between the pressure sensor and pressure instrument can't be separated. Both parts are sealed to avoid tampering

(Confirming to EN-837-3 & IS-3624)

Nominal size

Ø 50, 63, 100, 115, 150, 200, 250 & 300 mm

Accuracy

±1% of FS (From 1 to 70 bar)
±1.6% of FS (≥ 100 bar) (±1% Optional)
±1.6% of FS (For Vacuum)
Case & Bezel SS 304 Case with Snap Action bayonet lock type bezel
(SS 316 Optional)
SS 304 Case with Crimped Bezel (Hermetically Sealed)
(For Ø 50, 63 & 100 mm Optional)
Ingress Protection IP 65 as per EN 60 529 or IS/IEC 60 529
IP 68 as per IS/IEC 60 529 for Ø 100 & 150 mm-Optional
Pressure element — Bourdon Tube SS 316 / SS 316L / SS 316Ti (Monel 400 Optional)
(< 100 bar ’C’ shape / ≥ 100 bar helical shape)
Over pressure limit ≤ 100 bar - 125% of FS
> 100 bar < 600 bar - 115% of FS
> 600 bar < 1600 bar - 110% of FS
Movement SS 304 (SS 316 optional)
Socket SS 304 / SS 316 / SS 316L (Monel 400 Optional)
Dial Aluminium —Pre-coated White with black marking
Pointer Aluminium —Black Finish Center / Micro Zero Adjustment
Window 4 mm thick Toughened Glass
(Safety / Shatter Proof Optional)
Transparent Acrylic Window for Hermetically Sealed
Glycerin Filled Case
Joints Argon welded
Sealing gasket Neoprene Rubber (EPDM Optional)
Nitrile Rubber for Glycerin Filled Case
Blow out protection Neoprene Rubber (EPDM Optional)
For Ø 50 & 63 mm : On Top of Case
For ≥ Ø 100 mm : On Back of Case
Pressure relief Top of Case with Vent Valve (On Request)
Sealed Unit Upper Chamber : SS 304 (Standard) / SS 316
Diaphragm : SS 316L (Standard) / Hastealloy C
/ (Welded to Monel / Tantalum / Nickle (200/400) /
Upper Chamber) PTFE Coating protection/Other on request
Lower Chamber : SS 316 (Standard) / SS 316L / Tantalum
/ Monel / Hastealloy C / PTFE or PFA
Coating or Lining (3mm) protection
Transmitting Fluid : Silicon Oil (Standard) / Halocarbon /
Glycerin / Vegetable Oil etc.
Process Connection 1/4”/ 3/8”/ 1/2”/ 3/4”/ 1”/ 1 ”/ 2” BSP / NPT /
BSPT (Male), M20 X 1.5 (Male)
1/2” / 3/4” / 1” / 1 ” / 2” / 3” Flanged / I-Section
Flanged (Others on Request)
Permissible temperature Ambient : -25'C to 65'C
Process : Maximum 150'C (Direct Reading)
Maximum 3500C (Remote Reading)
Type of mounting Bottom Connection Direct Mounting
Back Connection Direct Mounting
Bottom Connection Surface Mounting with Capillary
Extension
Back Connection Panel Mounting with Capillary Extension
Back Connection Bracket Mounting with Capillary Extension
Pressure range -30” Hg … 0 … 1000 bar
Optional Available features
Liquid Fillable Case / Glycerin (99.7%) Filled Case
Solid front case (Safety Pattern) for 100 & 150 mm
External Zero Adj. for ≥ Ø 100 mm
Electrical Contact for 100 & 150 mm
Cooling Tower Assembly
Over Range Protection above pressure Range
Flushing Arrangement (1/4” NPT Plug)
Welded Compact Seal up to Pressure range 70 bar
Phenolic Solid Front safety design case for 115 mm
Coming soon...

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