ĐỒNG HỒ ĐO ÁP SUẤT DẠNG MÀNG WIKA 452.50 453.50

Applications

* With liquid filled case for applications with high dynamic pressure pulsations or vibration.

* Suitable in corrosive environments for gaseous, liquid or highly viscous media.

* Process industry: chemical/petrochemical, power stations, mining, on and offshore, environmental technology,mechanical engineering and plant construction.

Product features

* Wide selection of special materials

* PTFE wetted parts

* All stainless steel construction

* High overpressure safety

* Raised face flange

* Ideal for crystallizing media

Specifications

Design EN 837-3

Sizes: 4” & 6” (100 & 160 mm)

Accuracy class: ± 2.5% of span

Ranges:

Vacuum / Compound to 300 psi (20 bar)

Pressure from 6” H2O (16 mbar) to 100" H2O (250 mbar), 6" (160 mm) flange diameter

Pressure from 6 psi (400 mbar) to 360 psi (25 bar),

4” (100 mm) flange diameter

or other equivalent units of pressure or vacuum

Working pressure

Steady: full scale value

Fluctuating: 0.9 x full scale value

Overpressure safety: 5 x full scale value, max. 600 psi (400 bar)

Operating temperature

Ambient: -4°F to +140°F (-20°C to +60°C)

Medium: +212°F (+100°C) maximum

Storage: -40oF+158°F (-40cC to +70oC)

-4oF to + 158oF (-20oC to + 70oC) for

ranges ≤ 25"WC (60 mbar)

Temperature error: Additional error when temperature changes from reference temperature of 68°F (20°C) ±0.8% of span for every 18°F (10°K) rising or falling.

Weather protection:

Weather resistant (NEMA 3 / IP54)-dry case

Weather tight (NEMA 4X / IP66)-liquid-filled case

Pressure connection and lower diaphragm housing

1” 150# RF flange or

2” 150# RF flange

Case and upper diaphragm housing

Material: stainless steel

Case with blowout disk and stainless steel bayonet ring

Diaphragm element:

≤100” H2O (250 mbar): 316 stainless steel with PTFE lining

> 100” H2O (250 mbar): Duratherm (NiCrCo-alloy) with PTFE lining

Movement Material: stainless steel

Dial: White aluminum with black lettering

Pointer:

Black aluminum, adjustable-Type 452.50

Black aluminum, non-adjustable-Type 453.50

Window: Laminated safety glass with Buna-N gasket

Case fill:

Standard dry

Glycerine 86.5% - Type 453.50