In order to make pressure gauge suitable to measure the mediums with strong cauterization, high temperature, high viscosity, easy solidifying, and with solid suspended matter, pressure gauge need to avoid the measured mediums coming into normal pressure gauge directly and to avoid precipitation, we need to adopt diaphragm seal pressure gauges which made up of diaphragm isolation and normal pressure gauge.

WYM-X Diaphragm Seal Pressure Gauge is designed for pressure measurement that media does not directly contact instrument's measuring system and the pressure is transmitted through oil filled diaphragm seal unit. The sealed diaphragm would not raise a dead corner or area where residue may be left, which is universally used for sanitary applications. Plus the media is not contacted directly with the gauge sensor, so this type as well is suitable for high temperature and easy to block condition. This series are used to measure the pressure or loading pressure of each kind of liquid medium with cauterization, without freezing, or non-crystallization. This series products are mainly used in petroleum and chemical industry, basic industry, chemical fiber, dyeing chemical, pharmacy, food and dairying.

The gauge is made up of measurement system (including flange connection head, ripple diaphragm), turnable display parts (including connection rod, needle, dial), and crust (including crust and cover ring). The crust is made up of proof structure with good seal performance. The working principle is basic on the spring element. Under the pressure from measured medium, the diaphragm will transfigure accordingly, referring to the connection rod to make the turnable part circle and blow up, then the needle will display the data. When the pressure of measured medium affect the diaphragm, which make the diaphragm transfiguration, and then compress the sealed liquid in pressure measuring system, pressure P-△P is formed. When the rigidity of diaphragm is small enough, △P will be very small also, the pressure which the pressure measuring system formed will be very near to the pressure of measured mediums.

Because it is filled with sealed liquid as the medium for pressure transmitting, when the temperature of pressured part raised, the displayed temperature will raise accordingly due to the inflating modulus, the temperature affection has relationship with the inflating modulus of sealed liquid, diaphragm rigidity and the temperature of pressured part, especially for the pressure gauges with low measure span.

SPECIFICATIONS

Normal Size:  63(2.5’), 75(3’), 100(4’), 150(6’), 200(8’)

Accuracy Class: 1.6% or 2.5%

Diaphragm Connection: Thread, Flange, Hygienic Clamp

Protection Degree: IP54

Diaphragm material: 316LSS, 316LSS+PTEE coated, Hastelloy alloy, Titanium, Monel

Wetted material: 304SS, 316LSS, PVC or PTFE

Filling liquid: Silicone oil, fluorocarbon oil, Food oil

Tube: Stainless steel or copper alloy

Case: steel or stainless steel

Window (Lens): Polycarbonate

Sensing Element: Copper alloy or Stainless Steel

Pointer: Black painted aluminum; Dial Plate: Aluminum alloy

Single or dual scale: psi, kpa, mpa, bar, kg/cm2 or customized

Operation Temperature: -40~+70℃

Relative humidity: ≤90%

Temperature affection: when the difference is 20±5℃, the additional error should be 0.4%/10℃ or smaller.

Working Location: upright installation