Shanghai Zanke NY20 Series Mechanical Adjustable Pressure Switches

Principle and Structure

The built-in piston is connected to a precision spring. When the pressure changes, the expansion and contraction of the spring change accordingly. When the pressure reaches the set value, it triggers the preset mechanical structure and sends a switch signal. The raw material for the pressure-sensitive element: rubber is imported from the Federal Republic of Germany.

The working medium of the pressure switch is water, oil, or compressed air. The housing material of the pressure switch: galvanized steel and (304) stainless steel. For special user requirements, such as pressure switches matched with engineering excavators, they are delivered with protective sleeves and sealed connectors. The pressure switches produced are widely used in ships, railways, and engineering machinery as a successful alternative to imported products. When the system pressure is relatively high, a piston-type pressure switch is adopted, which consists of a piston seal ring, a piston cylinder, etc. Piston-type pressure switches can be used within a system pressure of 30MPa.

Features

These compact pressure switches are designed for OEM applications. They are ideal for high pressure-resistant equipment such as engineering machinery and marine valve remote control systems. The ultra-long volume-to-pressure ratio can be set at the factory or adjusted on-site.

Overpressure Safety

There are two types of overpressure safety for pressure switches: 30MPa and 60MPa. For pressure switches with an overpressure safety of 30MPa, the alarm pressure range is 0.035MPa to 10MPa; for pressure switches with an overpressure safety of 60MPa, the alarm pressure range is not specified.

Electrical wiring methods: Pressure switches with an overpressure safety of 30MPa have two wiring options: normally open or normally closed two-wire output. Pressure switches with an overpressure safety of 60MPa have wiring options: normally open or normally closed two-wire output.

Dimensions

• Black plastic sleeve

• 2-core socket: DT04-2P; 2-core lock: W-2P; 16 plug: 1060-16-0122

• Wire length: 150mm

• Wire (length 150mm): DJ7021-1.5-1

• Sheath

• Welding

• 74; 71

• S24 hexagon

• 57

• S24 hexagon

• M12x1.5

• S24 hexagon

• NPT1/8

• NPT1/8

Selection Table

Ordering Tips

After completing the selection, please recheck whether each item of the model is consistent with what you need, whether the range is correct, whether the output signal is correct, whether there are optional items, and whether accessories are missing.

Usage Notes

1. After receiving the product, please check whether the packaging and appearance are intact, and verify that the model and specifications are consistent with the product you purchased.

2. Before powering on, be sure to check whether the power supply voltage is correct and whether the wiring is correct. The company does not provide warranty for product burnout or load product damage caused by continuous errors.

3. Do not install with power on!

4. During installation, use a hex wrench. Do not install or disassemble with force. Otherwise, it is easy to damage the product, especially the threads and housing.

5. In case of abnormal phenomena, unless you have product adjustment equipment and skills, please contact our after-sales technical personnel.