ĐỒNG HỒ ĐO ÁP SUẤT WIKA 433.50

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” H
2O (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, not exceeding 600 psi (40 bar)
Operating temperature
Ambient:        -4°F to +140°F (-20°C to +60°C)
Medium:         +212°F (+100°C) maximum
Storage:         -40°F...+158°F (-40°C to +70°C)
                        -4°F...+158°F (-20°C to +70°C)
                        for ranges ≤ 25” H2O (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 (IP65) - liquid-flled case
Case and upper diaphragm housing
Material: stainless steel
Case with pressure relief disc and stainless steel bayonet ring
Pressure connection and lower diaphragm housing
Material: 316L SS
Lower mount (LM)
½” NPT female
Diaphragm element
≤ 100” H2O (250 mbar): 316 SS with PTFE lining
> 100” H2O (250 mbar): Inconel® (NiCr-alloy) with PTFE lining
All ranges with FPM (Viton) sealing gasket
Movement
Material: stainless steel

• 
  White aluminum with black lettering
  Pointer
  Black aluminum, adjustable - Type 432.50
  Black aluminum, non-adjustable - Type 433.50
  Window
  Laminated safety glass with Buna-N gasket
  Case fill
  Standard dry
  Glycerine 86.5% - Type 433.50

Optional extras
* 10X overpressure safety, max. 600 psi (40 bar)
* Underpressure safe to -30”Hg (-1 bar)
* Silicone or fluorolube case flling
* Special connections limited to wrench flat area
* Open flange connections (300# ASME maximum)
* Instrument glass or acrylic window
* Cleaned for oxygen service
* Extended media temperature to +392°F
* Exotic metal or PTFE lining for open flanges
* Alarm contacts switches (magnetic or inductive)
* Special process connections
* Custom dial layout