PR 20

At a Glance

In the Flameproof Model PR 20, the movement of the diaphragm, and hence the movement of the piston magnet is converted into appropriate calibrated rotary movement of the pointer through a magnetic connection. This type of diaphragm model is used in applications where no migration of the media from high pressure side (HP) to low pressure side (LP) is permitted.
Approval: Model PR 20 is Ex d IIC T6 IP66 approved.


Accuracy ±2% of the FSD (Ascending)
Migration Minor from high to low port
Range 0-0.075 to 0-4 bar
0-1 to 0-60 psi
First marking on scale 20% of the FSD
Sensing element Diaphragm
Wetted Parts Body material, SS 302 spring, ceramic magnet & seals
Case Material Stainless steel (SS 304)
Dial size Inch: 4.5, 6.0
mm: 115, 150
Mounting Direct or 2” horizontal / vertical pipe mounting bracket
Maximum working pressure 100 bar/ 1500psi
Maximum process temperature 80°C/ 175°F
Body material SS316 attached to flameproof aluminum enclosure
Seals Buna-N, Viton & EPDM ‘O’ Rings
Window Standard: Float glass
Optional: Toughened glass, acrylic & safety glass
Connection Standard: ¼” NPT(F)
Optional: ¼” BSP (F)
Porting In-line
Over range protection Up to the max. working pressure from high & low side
Protection for gauge & switch IP 66 / NEMA-4
Electrical connection ½” NPT (F) for 2 conduit ports at bottom, left and right 40 degrees from center line
Weight Approximately 2.5kg
+91 98 2304 3051
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