1： Overview

The YTP-60B/100B/150B series diaphragm pressure gauge is suitable for measuring the medium pressure of highly corrosive, high viscosity, easily crystallized, easily solidified, and high-temperature liquids, gases, or particulate solid particles. It is also necessary to avoid direct entry of the measuring medium into the pressure instrument, prevent sediment accumulation, and ensure easy cleaning.

Diaphragm pressure gauges are mainly used as pressure instruments for measuring fluid media in the production processes of industrial sectors such as petroleum, chemical, synthetic fiber, dyeing, pharmaceuticals, and alkali food.

2： Measurement principle

When the pressure P of the measuring medium acts on the diaphragm, the diaphragm deforms and compresses the sealing liquid of the pressure gauge pressure measurement system, forming a P-P pressure. When the rigidity of the diaphragm is small enough, P is also very small, and the pressure formed by the pressure measurement system of the diaphragm pressure gauge is equal to the pressure of the measuring medium.

3： Temperature characteristics of diaphragm meter

Due to the fact that the diaphragm gauge system is filled with sealing liquid as the medium for transmitting pressure, it is affected by the temperature volume expansion coefficient of the sealing liquid, which causes the reading of the pressure instrument to increase with the temperature of the compressed part. 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 small range pressure instruments, the impact is more significant. The temperature error of the general compression part is not more than 0.1%/℃. Therefore, the overall temperature impact of diaphragm pressure instruments is generally the sum of the temperature impact of general-purpose instruments and the temperature impact of the pressure part of the diaphragm device.

4： Corrosion resistance of diaphragm meter

The corrosion resistance of diaphragm meters can be ensured by selecting appropriate materials for the diaphragm, flange, and sealing gasket in contact with the measuring medium. Diaphragm material: 0Cr7Ni12Mo2 (316); Monel alloy (Cu30Ni70); Hastelloy alloy (H276C); Tantalum (Ta) and fluoroplastic (F4).

Flange material: Stainless steel 0Cr17Ni12Mo2 (316); Stainless steel lined with fluoroplastic (316+F4)

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

5： External dimensions6： Selection label

□ --- Optional pressure gauge model

□ -- Diaphragm diaphragm separator type

L-threaded type (≤ 60MPa)

F-flange type (≤ 25MPa)

F10- I-shaped flange type (≤ 4MPa)

C-clip type (0.1-2.5MPa)

N-Nut type (0.1-2.5MPa)

Z-bolt type (1-25MPa)

H-Homogenizer (10-60MPa)

□ -- Connection code

0) Direct (measured medium temperature<80 ℃)

1) Angle shape (measured medium temperature<150 ℃)

2) Hard tube (measured medium temperature<200 ℃)

3) Hose (1 meter, 2 meters, 4 meters, 6 meters)

4) Heat sink (measured medium temperature<200 ℃)

5) Damper

□ -- Diaphragm material

316.316L, Hastelloy, Monel alloy, tantalum sheet, fluoroplastic

□ -- Measurement range

□ -- Flange standard code

Type of ML threaded isolator
7： Instrument type

External dimensions