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Core Features and Advantages
Precise and Reliable Electrical Contact Control
High-Precision Contact Action: Employing magnetically assisted electrical contacts or a double-contact design reduces the impact of electric arcs, ensuring stable contact switching and preventing malfunctions.
Adjustable Upper and Lower Limit Settings: Users can flexibly adjust the pressure control range via the setting pointer on the dial, enabling automatic alarms or equipment start/stop (such as water pumps and air compressors).
Stable Signal Output: Moderate contact capacity (typically AC 220V/380V, 3A–5A) allows direct driving of small and medium-sized relays or contactors, simplifying the control system.
Safety and Ease of Maintenance
Electric Shock Protection: The all-steel casing is well-grounded, reducing the risk of leakage and ensuring operational safety.
Clear Display and Operation: The large dial design makes pressure values and contact settings clearly visible, eliminating the need to open the casing to adjust settings.
Low Maintenance Requirements: Robust construction and long contact life (typically exceeding 100,000 cycles) reduce replacement frequency.
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Frequently Asked Questions
Q
What materials are used in the construction of this pressure gauge?
The case, ring (cover), connection, Bourdon tube element, and movement are all made of stainless steel, ensuring excellent corrosion resistance and durability. The pointer is aluminum alloy with a black finish, and the dial plate is white aluminum with black graduations for clear readability.
Q
What is the thread size and connection location of this pressure gauge?
The gauge uses a 1/2" BSP thread with a lower connection location, making it compatible with a wide range of standard industrial pipe fittings and easy to install in most systems.
Q
What voltage and current ratings do the electrical contacts support?
The electrical contacts typically support AC 220V/380V with a current rating of 3A–5A. This allows direct driving of small and medium-sized relays or contactors without requiring additional signal conditioning equipment.
Q
How do I adjust the upper and lower pressure limit settings?
The pressure control range can be adjusted directly via the setting pointer on the dial face — no need to open the casing. This makes setup quick and safe, allowing operators to define the alarm or start/stop thresholds for connected equipment such as pumps or compressors.
Q
How long is the expected service life of the electrical contacts?
The electrical contacts are designed for long-term reliability, typically exceeding 100,000 switching cycles. This robust construction significantly reduces maintenance frequency and lowers the total cost of ownership over the product's lifetime.
Q
Is this pressure gauge suitable for use in refrigeration and HVAC systems?
Yes. This gauge is well-suited for refrigeration and air conditioning applications. It can monitor refrigerant pressure in real time and trigger automatic system regulation or protective shutdowns when pressure deviates from the set range, helping to protect compressors and other critical components.
Accuracy Instrument
