Stainless steel diaphragm pressure gauge

The YTP-60/100/150 diaphragm pressure gauge is suitable for measuring the pressure or negative pressure of various fluid media with certain corrosiveness, viscosity, and non crystalline or non solidified properties. Different materials of membranes can be selected according to the different requirements of the measuring medium for corrosion resistance.

Instruments with stainless steel shells can be used in harsh working environments.

Diaphragm pressure gauges are suitable for measuring the pressure of media with strong corrosion, high temperature, high viscosity, easy crystallization, easy solidification, and solid floating substances. In situations where it is necessary to avoid direct entry of the measuring medium into the universal pressure instrument and prevent sediment accumulation and easy cleaning, a diaphragm gauge consisting of a diaphragm isolator and a universal pressure instrument system should be used.

Diaphragm pressure gauges are mainly used to measure the pressure of fluid media in the production processes of industrial sectors such as petrochemicals, alkali production, chemical fibers, dyeing, pharmaceuticals, food, and refrigeration.

structural principle

When the pressure P of the measuring medium acts on the diaphragm, the diaphragm deforms [2], compressing the sealing fluid of the pressure measuring system of the pressure instrument to form a pressure of P - △ P. When the rigidity of the diaphragm is small enough, Δ P is also very small, and the pressure formed by the pressure measuring system of the pressure instrument is close to the pressure of the measured medium.

Stainless steel diaphragm pressure gaugeMain technical indicators

Due to the fact that the diaphragm pressure gauge system is filled with sealing liquid as the medium for transmitting pressure, the temperature expansion coefficient of the sealing liquid causes the reading of the pressure instrument to increase as the temperature of the compressed part rises. The temperature effect is related to the expansion coefficient of the sealing liquid, the stiffness of the diaphragm, and the temperature of the compressed part, especially for low range pressure instruments, the impact is more significant. The temperature error of the general compression part is not more than 0.1%/℃.

1: Accuracy level 1.6/2.5

2: Measurement range:

Unit MPa: 0-0.06; 0-0.1； 0-0.16； 0-0.25； 0-0.4； 0-0.6； 0-1.0； 0-1.6； 0-2.5； -0.1-0； -0.1-0.06； -0.1-0.15； -0.1-0.3； -0.1-0.5； -0.1-0.9； -0.1-1.5； -0.1-2.4MPa

Unit KPa: 0-1.6; 0-2.5； 0-4； 0-6； 0-10； 0-16； 0-25； 0-40； 0-60； -1.6-0； -2.5-0； -4-0； -6-0； -10-0； -16-0； -25-0； -40-0； -60-0； -0.8-0.8； -1.2-1.2； -2-2； -3-3； -5-5； -8-8； -12-12； -20-20； -30-30KPa

3: Diaphragm material 304/316/PTFE

4: Internal filling working fluid: (1) silicone oil (2) filled according to customer requirements

5: Working conditions: (1) Temperature environment temperature -20~+55 ℃, etc

(2) Work pressure static load: used up to 3/4 of the measurement upper limit value

Alternating load: used up to 2/3 of the measurement upper limit value

Short term pressure: used up to the upper limit of measurement

6: Connection size: (1) Threaded connection: M20 * 1.5 (G3/8 ″ G1/2 ″)

(2) Flange connection A: Standard JB81-5 "Flat Welded Steel Flanges" of the Ministry of Machinery Industry

B: Standard of the Ministry of Chemical Industry for Acid Resistant Flat Welded Steel Flanges

C: Our company's flange standards

D: Customize according to user needs

7: Outer diameter of instrument panel: 60mm, 100mm, 150mm

8: Model and form

YTP-60/100/150BF/ML, Threaded connections are used to measure the pressure of highly corrosive media. For example, hydrochloric acid, ******, etc.

YTP-60/100/150BF/MF, Flange connections are used for pressure in highly corrosive, viscous, and easily crystallizable media.

Explanation of Corrosion Resistance

1. The corrosion resistance of diaphragm pressure gauges can be ensured by selecting appropriate materials for the diaphragm, flange, and sealing gasket in contact with the measuring medium.

2. Diaphragm material: 0Crl7Nil2Mo2 (316); Monel alloy (Cu30Ni70); Hastelloy alloy (H276C); Tantalum (Ta) and fluoroplastic (F4).

3. Flange material: Stainless steel 0Crl7Nil2M02 (316); Stainless steel lined with fluoroplastic (316+F4).

4. Sealing gasket material: Nitrile rubber; Fluororubber; Silicone rubber and fluoroplastics.

Stainless steel diaphragm pressure gaugeModel Example Introduction

示例： Y-100BF/SR/MF（A）316/4MPa/50-4.0HGJ46

The universal instrument is a Y-100BF stainless steel pressure gauge, with an SR heat dissipation connection type. It uses an open convex flange MF isolator (flange) made of carbon steel and a diaphragm made of 316 stainless steel. The measurement range is 0-4MPA, and the flange standard is 50-4.0HGJ46.

Ordering Instructions

1. Please indicate the model, name, measurement range, joint thread size, and accuracy level when placing an order.

2. If there are special requirements, please specify them in detail when placing an order.

The selection of diaphragm material for diaphragm pressure gauges: HC, HB, TA diaphragms should be lined with PTFE for strong acid media, and 316L diaphragms should be used for strong alkali media.