Pg09 Diaphragm Type Steel Pressure Gauge with Bourdon Tube Gauge

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: PG09
• Measuring Range: Medium-pressure Gauge
• Type: Resistance to Vibration
• Accuracy: 1
• Display: Pointer
• Application: Industrial, Civil
• Structure: Fluid Column Pressure Gauge
• Connection Type: Radial Direction
• Function: Local Indication Type
• Installation Structure: Direct Mounting
• Features of Measurement Medium: General Pressure Gauge
• Indicating Pressure Reference: General Pressure Gauge
• Diaphragm Material: Ocr 17n I 12mo2 (316L); Monel Alloy (Cu30n I 70)
• Flange Material: Ss316: Ss316+F4
• Sealing Gasket Material: Nitrile Rubber, Fluorine Rubber, Silicone Rubber,
• Accuracy.: 1.5%; 2.5%
• Range: 1kpa ~2.5MPa
• Transport Package: Wooden Case or Carton
• Specification: SGS, GMP
• Trademark: U-ideal
• Origin: Tianjin, China
• HS Code: 90262090
• Production Capacity: 3000PCS/Month
• Package Size: 30.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 3.000kg

Product Description

Product Description

The corrosion resistance of the diaphragm pressure gauge

Diaphragm gauge corrosion resistance performance can be assured by the appropriate choice of the wet part diaphragm, flange and sealing gasket materials.
Diaphragm material: OCr 17N i 12Mo2 (316L); Monel alloy (Cu30N i 70); HC(H276C);
Tantalum (Ta) and fluorine plastic (F4).
Flange material: SS316; SS316+F4
Sealing gasket material: Nitrile rubber, fluorine rubber, silicone rubber, fluorine plastics.

Working principle
The measured medium pressure P produced to diaphragm, and diaphragm appear deformation, compress pressure gauge sealing liquid, and generate P-DP pressure. If the rigid good enough, then DP is small. Then the measure pressure is similar to the measure medium pressure.

Diaphragm gauge liquid level difference
More than other type, the diaphragm gauge with soft tube type, due to the pressure sensing part installation position is different than ordinary type, this type will create liquid level difference influence value P.

Diaphragm-seal pressure gauge
Diaphragm pressure gauge the temperature influence is related to the amount of sealing liquid expanding coefficient diaphragm stiffness and affected by the temperature of the pressure parts. When the temperature deviated from 20+/- 5 ° C, rigid rod influence <0.1% ° C, and soft type (remote mounting type) influence is < 0.1%+/-0.025L% ° C, (L - pressure conduit length m). Diaphragm type pressure gauge's sealing liquid should be choose carefully according to the different environment.
The choice of sealing liquid
To ensure the diaphragm pressure gauge reliability and safety, should select a suitable sealing liquid according to different application.

seal liquid	pressure part temperature	density g/cm 3	coefficient expansion 1/°C	Service
High viscosity silicone oil	-10~200  °C	1.07	0. 95X10 3	high temperature
low viscosity silicone oil	-30~100 °C	0. 94	1.08X10- 3	ordinary
glycerin liquor	-5~100 °C	1.27	0. 61X10 3	food
Plant Oil	-5~100 °C	0. 93	1.03X10- 3	food
fluorocarbon oil	-30~150 °C	1.93	0. 75X10- 3	oxygen, hydrogen

The choice of the diaphragm part corrosion resistant material

Corrosive fluid	anti-corrosion material
	tin-bronze (QSn6.5-0.4)	SUS316	(Ta)	Monel (Ni70Cu30)	hastelloy (HG)	PTFE (F4)
sulphuric (H2S04)	V	D	O	V	V	V
Nitric (hno3)	X	V	O	X	V	V
(HCL)	D	X	O	X	V	V
Phosphoric (H3P04)	V	V	O	V	V	V
acetic (CH3C00H)	V	V	O	V	O	V
NaOH	D	O	D	O	O	V
(Na2CO3)	O	O	O	O	V	V
NaHCO3	V	O	O	O	O	V
CL2	dry:V  wet:X	dry:V wet: X	O	dry:V  wet: X	V	V
Br2	dry: D  wet:X	dry:X wet: D	O	dry:O wet: X	O	V
NH3	X	V	X	X	O	V
Sea water (30%NaCL)	V	V	O	O	O	V
Instruction: OBest   Dconditional use   V_usable     X_ unusable

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