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Capsule Pressure Gauges
Wika Capsule Pressure Gauge Model 612.20.100, 0...250 mbar / 0...2500 mmWC, Dual Scale, 4" Dial, 1/2" NPT Lower Mount, 84272197
WIKA

Wika Capsule Pressure Gauge Model 612.20.100, 0...250 mbar / 0...2500 mmWC, Dual Scale, 4" Dial, 1/2" NPT Lower Mount, 84272197

Mfr. part no.
84272197
SKU
PW40-MBAR-250

Specifications

Measuring Range 0...250 mbar
Dial Size 100 mm / 4"
Process Connection 1/2" Male NPT
Accuracy Class Class 1.6 to EN 837-3
Case Material Stainless steel case with cam-ring (bayonet) bezel
Wetted Parts Copper alloy
Window Flat instrument glass
Ambient Temperature Range -20...+60 °C
Ingress Protection IP54
Media Compatibility Dry, non-aggressive gases that do not corrode copper alloy
Mounting Position Lower mount

Key Features

  • Capsule pressure gauge, industrial series model 612.20.100 for ultra-low pressures
  • Dual scale 0…250 mbar primary & secondary scale mmWC (red).
  • 1/2" NPT lower Mount process connection
  • Copper alloy capsule measuring system for dry, non-aggressive gases
  • Stainless steel case with cam-ring (bayonet) bezel and flat glass window
  • Accuracy class 1.6 to EN 837-3
  • Typical ambient temperature -20…+60 °C, medium temperature up to +100 °C
  • High resolution at low pressures for accurate draft and level indication
  • Made in Switzerland.

Description

The WIKA 612.20.100 capsule pressure gauge, belongs to the industrial low-pressure series designed for precise measurement of small positive pressures of dry, non-aggressive gases. A copper alloy capsule measuring system converts the low process pressure into a proportional movement, which is indicated on the large 100 mm dial with 0…250 mbar primary scale and red 0...2500 mmWC secondary scale. The stainless steel case with cam-ring (bayonet) bezel and flat instrument glass window provides robust protection for demanding plant environments. Design and performance follow EN 837-3, with an accuracy of class 1.6 and typical permissible temperature range from -20…+60 °C ambient and up to +100 °C medium. The 1/2" NPT lower Mount process connection simplifies installation on manifolds, impulse lines or panels, making this capsule gauge ideal for ventilation, filter monitoring, level indication using mmWC units and other low-pressure pneumatic applications.

Typical Applications

  • Draft and chimney pressure monitoring in boilers, heaters and flues
  • Filter and blower differential pressure indication at very low pressures
  • Sensitive low-pressure pneumatic control and monitoring
  • Level measurement in open tanks using mmWC indication at low ranges
  • Laboratory and environmental monitoring of ultra-low gas pressures

Documents

  • Wika Datasheet-84272197

    PDF, 47 KB

  • Wika-612.20 Model — Datasheet

    PDF, 575 KB

  • Wika-612.20 Model Technical Data

    PDF, 604 KB

  • Wika Pressure Gauge Operating — Instructions

    PDF, 383 KB

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