Product Description：

Product name : Capsule Pressure Gauge

Nominal Size (mm) :  4 ½” (115 mm)

Accuracy Class : Grade A per ASME B40.100 (corresponds to indication accuracy ±2.5 %)

Pressure Element &Movement Material:  Copper alloy or stainless steel

Scale Ranges : 0 … 25 mbar to 0 … 600 mbar or all other equivalent vacuum or combined pressure and vacuum ranges

Pressure Limitation Steady: Full scale value Fluctuating: 0.9 x full scale value

Process Connection : Copper alloy or Stainless steel 316L Lower mount, ¼ NPT or ½ NPT (male)

Permissible Temperature :

Ambient : -20 … +60 °C (-4 … 140 °F)

Medium: ≤ 100 °C (212 °F)

Temperature Effect : When the temperature at the measuring system deviates from the reference temperature +20 °C (+68 °F): max. ±0.6 %/10 K of full scale value

Window : Clear non-splintering plastic, sealing from NBR

Applications:

■ Process industry: Plant construction, chemical industry, petrochemical industry, power plants, mining, on-/offshore and environmental technology

■ For gaseous, dry and aggressive media, also in aggressive environments

■ Capsule pressure gauges uses capsule to measure micro pressure sensor , measure the corrode the copper alloy , micro pressure and negative pressure of the gas without explosion danger , widely applied to boiler ventilating , gas pipeline , burning device and other similar devices .  According to the guide system and the shell , all stainless steel capsule pressure gauge adopts stainless steel material ,used in corrosion resistance to demand higher on all kinds of gas  medium in the process of micro pressure and negative pressure measurement.

Special Features:

■ Safety version with solid baffle wall designed in compliance with the requirements and test conditions of ASME B 40.100

■ Low scale ranges from 0 … 25 mbar to 0 … 600 mbar ■ Nominal size 4 ½” (115 mm) ■ Robust, glass-fibre reinforced case

Description

High-quality capsule pressure gauges and have been designed especially for increased safety requirements within the process industry.The capsule measurement principle is particularly suitable for low pressures. On pressurisation, the expansion of the capsule element, proportional to the incident pressure, is transmitted to the movement and indicated.

The glass-fibre reinforced case offers the necessary stability for reproducible measurements, even under aggressive ambient conditions.

Theory

It is made of measuring system ( including joints , corrugated box, etc.) , the transmission mechanism ( including the pull rod mechanism , the gear transmission mechanism., indicating parts ( including pointer and dial ) and the shell (including casing , lining and table glass ). The operation principle is based on the corrugated bellows under pressure measured medium to produce the corresponding elastic deformation , then through and to amplify the transmission gear transmission mechanism , gradualle by pointer fixed on gear shaft measured value on the dial indicator .And the instrument with zero device can easily adjust the zero.

Main Parameters