Technical Data

Tapered threads (such as PT and NPT) should be sealed using thread seal tape or thread sealant (anaerobic adhesive).
Parallel threads (such as PF and PS) should be used with gaskets (copper or PTFE) to ensure proper sealing.

Accuracy is the measurement error calculated based on the full-scale value shown on the dial.

In environments with low temperatures or significant climate changes, condensation may occur, making it difficult to read the instrument.
To prevent this, filling the instrument with a suitable liquid can effectively stop condensation on the window and ensure clear visibility of the readings.

For conductive media that cause severe wear on instruments (such as acids, alkalis, or cement), prolonged contact with the measuring area should be avoided. In harsh installation environments, adding a diaphragm can help protect the instrument and extend its service life.

The principle is based on two metal strips with different coefficients of thermal expansion bonded together to form a bimetallic strip. When the temperature changes, the metals expand at different rates, causing the strip to bend. The degree of bending corresponds to the temperature change and is mechanically converted into pointer movement, allowing temperature measurement.

The principle is based on the expansion properties of substances to measure temperature. Its main structure consists of a Bourdon tube, capillary tube, and sensing bulb within a sealed system.
When the temperature changes, the internal filling medium (liquid or gas) expands or contracts, and this change is mechanically transmitted to move the pointer, thereby displaying the temperature reading.

To ensure stable product quality, please follow the storage recommendations below:

1. Keep the gauge at room temperature in a dry environment. Avoid high temperature and humidity to reduce oxidation of metal components and yellowing of the filling liquid. Extreme temperature changes may cause the liquid to expand or leak.
2. As the internal mechanical structure of the pressure gauge is precise, it should be stored in a stable location to avoid dropping or strong vibration, which may damage the pointer or movement.
3. Keep away from acidic, alkaline, or corrosive gases to prevent deterioration of the dial window and internal component damage.
4. Avoid direct sunlight. Prolonged exposure may degrade the filling liquid or cause bubble formation, and the printed dial may fade, making it difficult to read.
5. Do not place heavy objects on the gauge, as this may lead to structural deformation.

When the pressure of a pressure gauge exceeds 200 bar (i.e., PS > 200 bar), it must comply with the Pressure Equipment Directive (PED) and bear the CE marking.
If the pressure is equal to or less than 200 bar (PS ≤ 200 bar), it is considered low-risk equipment and classified under "Sound Engineering Practice (SEP)," in which case CE marking is not required.