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600adjustable Air Differential Pressure Switch - China

price: contact company for price

I. Install Switch Body

Please check if the switch body is leaking. If so, it is damaged and cannot be installed. The switch body should be installed on a vertical stable flat. And it should be near the pressure connection site as much as possible. It will decrease the distance for pressure connection and improve the performance.

1. Installing position:

Vertically installed and P1 & P2 downward as Fig. 1 is the best way. It can eliminate the possible condensing, and it is the factory-calibrating position.

- Can be installed horizontally when the environment does not have any condensing. On this way, Fig. 2 is recommended. The cover is upward and the switch value should plus about 20pa.

- When it can only be installed as Fig. 3 (does not recommend this way), the switch value should minus about 10pa.

2. Fasten with screws:

For the product with ear installation, fasten the 3 screws (max. φ4mm) directly into the ear on the installation flat. Do not fasten the screws too much. Otherwise, the switch could be damaged.

For the product without installing ear, it must be installed with the “U” shape bracket. This bracket is standard accessory and was connected with the switch body in factory. Simply fasten the 3 screws (max. φ5.4mm) into any 3 holes of the bracket on the installation flat.

II.Pressure Connect

Do not let the pipe to be tied as a knot, especially when the pipe passes edges and corners. Otherwise, the switch cannot work.

1. Insert the 2 pressure connection parts as Fig. 4 with the long side (60mm) into the prepared holes. Each part should be installed with 2 screws. Be sure to airproof the holes after installing.

2. Connect the plastic pipe. The standard accessory is 2m long with inner φ6mm. Cut the pipe as short as possible to connect the ports P1 & P2 on the switch and the short side of Fig. 4 parts. P1 is high port on the bottom of the switch and P2 is low port on the switch body as Fig. 5.

-After connecting the pipe, please check if the connecting is tight. And it should be inspected on daily maintenance. The switch cannot work if it is leaking.

600Adjustable Air Differential Pressure Switch

III.Electrical Connect

The operating technician should be trained and operate regularly.

Be sure to DISCONNECT the external power before electrical wiring. Otherwise, possible damage or even electric shock could happen.

1. The switch body as Fig. 6 is under the plastic cover.

And the contact principle is:

1: Com

2 Normal Close Contact

3 Normal Open Contact

2.Pressure/Differential Pressure setting

The field adjustable scale indicates the set point. It means the contact will actuate when the applied (differential) pressure increases to it. This scale is accurate only when the switch is installed vertically with the P1 and P2 ports download as Fig. 1. When the applied (differential) pressure falls down below the set point, the contact will restore to the original status.

-open the upper cover.

-screw the printed scale dial ( A in Fig. 6) to required set point. It should be operated with a “一” shape screw driver.

-wire the screw terminals 1, 2 or 3 as required.

-restore the cover closely.

IV. Test

Be sure to start testing after the upper cover is closed. Use instruments if needed. Increase the applied (differential) pressure slowly. When it arrives the set point, the contact actuates. Then decrease the (differential) pressure slowly. When it is lower than the set point, the contact will restore to the original status. Please note the dead band characteristics for this product. If the actuations are correct, the installation and all pressure/electrical connections are finished correctly.

The max. working differential pressure is 7500Pa. If over pressured, the switch will be damaged.

V. Dimensions


Company Contact:


  • Phone: 13120322487

  • Address: Yang Ming Square,10 Xiao Ying Rd.,Chao Yang Distri, Beijing, China

  • Email: Email


Published date: July 11, 2013 -

  • Business Description: Beijing Jamedoorla Technology Co.,Ltd., founded in 2001, is a

    professional instrument supplier. Companies adhering to the world

    advanced technology level, it is Shared with clients continuously

    strengthen cooperation with foreign well known manufacturers, imported

    high quality instruments and recommend to the user. As the world's many

    famous instrument manufacturers in China agent (American DWYER, ARTI

    KANOMAX Japan plus field, RION) companies to provide relevant measure

    pressure, temperature and humidity, wind speed, noise, and other indoor

    environment testing instruments products. Widely used in hvac, clean

    room clean, biotechnology, electronic semiconductor chip industry, food,

    pharmaceutical, aerospace and other fields.

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