Overview
| brand | Shanghai Automation Instrument | model | CYW-152BFZ II |
| material quality | Stainless steel | temperature | -20 ℃~80 ℃ |
| accuracy | two point five | pressure | 0kPa~100kPa |
| install | screw thread | display | Pointer |
| producing area | Shanghai | quantity | nine hundred and ninety-nine |
Product Details
Product Introduction
CYW-152B and CYW153B stainless steel differential pressure gauges (hereinafter referred to as instruments) are suitable for measuring the differential pressure, flow rate, and other parameters of various liquid (gas) media in the process flow of industrial departments such as chemical, chemical, metallurgical, power, and nuclear power. The instrument structure is all made of stainless steel, and the measurement system (double corrugated pipes and connecting components) and pressure system (including joints, conduits, etc.) are made of special austenitic stainless steel, which has strong corrosion resistance and resistance to the impact of working environment erosion. The overall structure design of the instrument is reasonable, with advanced technology, small volume, light weight, good stability, long service life, novel appearance, and strong adaptability. There are two types of connection forms for instrument connectors: parallel (which can be directly connected to a three-valve manifold) and oblique, which can adapt to the matching installation of different users.
Main technical parameters
1. Measurement range of differential pressure, nominal working pressure, accuracy level, and joint thread size:
Measurement range of differential pressure | Nominal working pressure | Accuracy class | Joint thread size | ||
0-10 | KPa | sixty | KPa | two point five | M20 * 1.5 NPT1/2 |
0-16 | one hundred | ||||
0-25 | one hundred and sixty | ||||
0-40 | two hundred and fifty | ||||
0-60 | four hundred | ||||
0-100 | six hundred | ||||
0-0.16 | MPa | one | MPa | ||
0-0.25 | one point six | ||||
0-0.40 | two point five | ||||
0-0.60 | four | ||||
0-1 | six | ||||
0-1.6 | ten | ||||
0-2.5 | ten | ||||
2. Material of the pressure system and casing:
Part Name | Material grade (code) |
Joints, conduits | 0Cr17Ni12Mo2 (316) |
corrugated pipe | 00Cr17Ni14Mo2 (316L) |
Case, cover, and ring | 0Cr18Ni9 (304) |
3. Appearance and installation dimensions: see Figure 1, Figure 2, and Figure 3
4. Operating environment temperature: -40~70 ℃
5. Anti working environment vibration: V.H.3 level
6. Weight: approximately 1.5kg
7. Instrument casing protection level: IP54
8. The technical performance of the instrument meets the enterprise standard Q/YXBM831-1997 "Stainless Steel Differential Pressure Gauge"
Structural Principles
The instrument adopts a double corrugated pipe structure, where two corrugated pipes are installed symmetrically on both sides of the "I" shaped bracket. The upper and lower ends of the I-shaped bracket are respectively movable and fixed ends, and the middle is connected by a spring plate; Two corrugated pipes are parallel and connected to the high and low pressure joints on the watch case using conduits; The gear transmission mechanism is directly installed at the fixed end of the bracket and connected to the movable end of the bracket through a pull rod; The dial is directly fixed to the gear transmission mechanism.
The working principle of the instrument: Based on the use of two corrugated pipes with the same stiffness as the pressure sensing components, they are forced to generate the same concentrated force on the movable support under the same measured medium. Due to the fact that both sides of the spring plate do not deflect under equal torque, the support is still in its original position, and the gear transmission mechanism does not move, so that the pointer still points to the zero position.
When different pressures are applied (usually the high-pressure end is higher than the low-pressure end), the force acting on the movable support by the two corrugated pipes is not equal, causing corresponding displacement to be generated and driving the gear transmission mechanism to drive and amplify. After the pointer deflects, the differential pressure value between the two is indicated.
Instructions for use
1. The instrument should be installed vertically at the same level as the measuring point, otherwise additional errors caused by liquid level differences must be included as appropriate.
2. The instrument connector marked with "H" represents the high voltage end, and the connector marked with "L" represents the low voltage end.
3. When measuring differential pressure, the differential pressure value of the instrument can be used within 75% of the upper limit of the base range, and the maximum static pressure value of the system should not exceed the maximum static pressure value specified by the instrument.
4. As shown in Figure 4, a balance (safety) valve (valve 1) should be installed in front of the high and low pressure input ports of the instrument during installation, and should be in the open position. After all valves 2 and 3 are opened, the balance valve should be closed.
5. Before use, the instrument should carefully verify the degree of erosion caused by the tested medium to avoid early corrosion damage to the bellows.
During regular maintenance of instruments, if it is necessary to open the meter cover, special tools should be used for maintenance.
7. When the indication error of the instrument increases due to temperature changes and directly affects the accuracy of measurement, the protective plug boss on the shell can be cut off.
Ordering requirements
When ordering instruments, users must indicate:
1. Model and name, differential pressure range, maximum static pressure, Unit of measurement, accuracy level;
2. Materials of joints and corrugated pipes;
3. Joint thread size: M20 × 1.5 or 1/2NPT;
4. Special requirements, such as filling the case with liquid or other requirements, can be resolved through negotiation.
Note: Three valve manifolds can be customized on behalf of users (valves 1-3 in Figure 4)