Product Description：
Product name : Diaphragm and capsule pressure gauges
Nominal size (NS) : ■ Ø 100 mm [4″] ■ Ø 160 mm [6″]
Accuracy class : 1.6% or 2.5%
Case material : ■ Stainless steel 1.4301 (304) ■ Stainless steel 1.4571 (316 Ti)
Shake resistance grade : V.H.4
Movement ：Stainless steel
Window ：Laminated safety glass
Type of measuring element ：Diaphragm element
Diaphragm element: ■ Stainless steel 316L, for span ≤ 0.25 bar ■ NiCr alloy (Inconel), for span > 0.25 bar
Applications:
■ For measuring locations with increased overload
■ With liquid-filled case suitability for high dynamic pressure loads and vibrations
■ For gaseous, liquid and aggressive media, also in aggressive environments
■ With open connecting flange also suitable for contaminated and viscous media
■ Process industry: Chemical industry, petrochemical industry, oil and gas, power generation, water and wastewater technology, machine building and general plant construction.
Special features
■ Case and wetted parts from stainless steel
■ Wide choice of special materials
■ High overload safety up to the 10-fold full scale value
■ Process connection thread or open flange
■ Scale ranges from 0 … 16 mbar
Temperature effect of diaphragm pressure gauge
Diaphragm pressure gauge is affected by temperature with sealing liquid membrane expansion coefficient stiffness and pressure parts temperature. In the use of temperature deviation 20±5℃ , changing rate of maximum value affected by the temperature is not greater than 0.1%℃ , flexible takes (far) is not greater than 0.1 + 0.025% (L- transmitting pressure conduit length m ) , appropriate sealing work fluid is chosen according to the use of different environment.
| Sealing Liquid | Sealing liquid choice for reliability and safety , suitable liquid is chosen according to purposes . | ||||
| Sealing Liquid | Temperature Range | Specific Weight g/cm3 | Volume Coefficient 1/℃ | Use | |
| Heavy Viscous | -10～200℃ | 1.07 | 0.95*10-3 | high temperature | |
| Low Viscous Silicone | -30～100℃ | 0.94 | 1.08*10-3 | general use | |
| Glycerin Solution | -5～100℃ | 1.27 | 0.61*10-3 | food use | |
Corrosion Resistance
Corrosion resistance is ensured through proper selection and measurement of the medium contact part of the diaphragm , the flange and the sealing gasket materials. .
Material : OCR17NI 12MO2(SU316L) , onel alloy , hartz alloy , ta , f4 .
Flange Material : SUS304 , SUS316 ,Lined with four fluorine.
