Reliable Pressure Indication with Built-in Electrical Control
An Electric Contact Pressure Gauge is designed for systems that need both clear pressure reading and automatic electrical control. It works like a traditional mechanical pressure gauge, but with adjustable electrical contacts inside the dial. When the pressure reaches a preset upper or lower limit, the contact can open or close a circuit to trigger an alarm, start or stop equipment, or send a signal to a control system.
This makes it a practical choice for pumps, compressors, hydraulic stations, water supply systems, boilers, and industrial production lines where operators need local pressure indication and automatic limit control at the same time.
Unlike a standard pressure gauge, this product does more than display pressure. Unlike a simple pressure switch, it also gives workers a visible pressure reading on site. That is why many buyers also search for it as a contact pressure gauge, pressure gauge with electric contact, or pressure gauge with switch contacts.
What Is an Electric Contact Pressure Gauge?
An electric contact pressure gauge is a mechanical pressure gauge equipped with electrical switching contacts. The pointer shows the actual pressure value, while the contact pointer is set to the required pressure limit. When the pressure pointer reaches the set point, the electrical contact changes state and sends a control or alarm signal.
It is commonly used for:
Pressure monitoring
Pressure alarm
Pump start and stop control
Compressor protection
Hydraulic system control
High and low pressure limit warning
Automatic equipment interlock
For many industrial systems, it is a simple and cost-effective solution because one instrument can handle both pressure display and switching control.
Key Features
1. Pressure Display and Alarm Control in One Gauge
The gauge provides local pressure indication while also supporting electrical signal output. Operators can check the pressure directly from the dial, and the system can respond automatically when pressure is too high or too low.
2. Adjustable Upper and Lower Limit Contacts
The contact set points can be adjusted according to the working condition. It can be used for high pressure alarm, low pressure alarm, or dual-limit pressure control.
3. Stable Mechanical Structure
The gauge uses a mechanical pressure sensing element, usually a Bourdon tube structure, to provide reliable pressure indication in daily industrial use.
4. Suitable for Pump and Compressor Control
When connected with a control panel, relay, or alarm device, the electric contact pressure gauge can help start or stop pumps and compressors based on preset pressure limits.
5. Clear Dial and Easy Reading
The large dial scale allows workers to check pressure values quickly during inspection, maintenance, and operation.
6. Multiple Connection and Range Options
Pressure range, dial size, thread connection, contact type, and electrical rating can be customized according to different working environments.
How Does an Electric Contact Pressure Gauge Work?
The gauge has two main pointer systems:
The measuring pointer moves according to the actual pressure of the medium.
The setting pointer is adjusted to the required pressure limit.
When the measuring pointer reaches the setting pointer, the internal contact is activated. The circuit can then be opened or closed, depending on the contact design. This signal can be used to trigger a buzzer, warning light, pump starter, control relay, or PLC input.
Common switching functions include:
Normally open contact
Normally closed contact
Upper limit control
Lower limit control
Dual contact control
Alarm signal output
For example, in a water pump system, the gauge can send a signal when pressure drops below the set value and stop the pump when the pressure reaches the upper limit.
Product Specifications
| Item | Specification |
| Product Name | Electric Contact Pressure Gauge |
| Other Names | Contact Pressure Gauge, Pressure Gauge with Electric Contact, Pressure Gauge with Switch Contacts |
| Pressure Type | Gauge Pressure |
| Measuring Element | Bourdon Tube |
| Dial Size | 60 mm, 100 mm, 150 mm or customized |
| Pressure Range | Vacuum, low pressure, medium pressure, high pressure ranges available |
| Contact Type | Single contact, double contact, upper/lower limit contact |
| Switching Function | Normally open / normally closed |
| Case Material | Steel, stainless steel or customized |
| Window Material | Glass or polycarbonate |
| Connection | Bottom connection, back connection |
| Thread Options | G1/4, G1/2, 1/4 NPT, 1/2 NPT or customized |
| Application Medium | Gas, water, oil and non-corrosive liquid media |
| Application | Pump control, compressor control, hydraulic systems, water treatment, industrial automation |
Note: Exact specifications can be customized according to pressure range, medium, temperature, vibration level, and control system requirements.Note: Exact specifications can be customized according to pressure range, medium, temperature, vibration level, and control system requirements.
Main Applications
Pump Control Systems
Electric contact pressure gauges are widely used in water pumps, booster pumps, fire pump systems, and circulating pump systems. They help monitor pressure changes and send control signals when pressure reaches the preset value.
Air Compressors
In compressed air systems, the gauge can be used for pressure indication and alarm control, helping protect equipment from abnormal pressure conditions.
Hydraulic and Pneumatic Systems
Hydraulic stations and pneumatic equipment often require stable pressure monitoring. The gauge provides a visible pressure reading and supports automatic limit control.
Boiler and Pressure Equipment
The product can be used in boiler auxiliary systems and other pressure equipment where pressure warning and on-site reading are required.
Water Treatment and Industrial Pipelines
For water treatment equipment, pipelines, and process systems, the electric contact pressure gauge helps operators monitor pressure and respond quickly to pressure changes.
Industrial Automation
When connected to relays, control panels, or PLC systems, the gauge can be part of a simple automatic pressure control solution.
Why Choose Our Electric Contact Pressure Gauge?
Our electric contact pressure gauge is built for practical industrial use. It is easy to install, easy to read, and flexible for different control requirements. Whether your project needs high pressure alarm, low pressure protection, pump start-stop control, or local pressure indication, we can provide suitable pressure ranges and connection options.
We support OEM and bulk orders for distributors, equipment manufacturers, pump system suppliers, and industrial control panel manufacturers.
Advantages for B2B Buyers
Custom pressure ranges available
Multiple thread and connection options
Suitable for pump and compressor systems
Clear dial for easy on-site reading
Can work with alarm devices and control panels
Stable performance for industrial pressure monitoring
OEM labeling and packaging available
Fast quotation based on technical requirements
How to Select the Right Electric Contact Pressure Gauge
Before ordering, please confirm the following details:
Required pressure range
Dial size
Thread connection
Bottom or back connection
Contact type: single contact or double contact
Switching function: normally open or normally closed
Working medium: water, air, oil, gas, etc.
Working temperature
Whether vibration is present
Electrical load and control system requirements
If you are not sure which model is suitable, send us your working pressure, medium, connection size, and control requirement. Our team can recommend a suitable configuration.
FAQ
What is the difference between an electric contact pressure gauge and a pressure switch?
An electric contact pressure gauge shows the pressure value on the dial and also provides an electrical switching signal. A pressure switch mainly provides switching output and usually does not offer the same clear local pressure indication.
Can this gauge control a pump automatically?
Yes. When connected with a relay or control panel, the electric contact pressure gauge can be used for pump start-stop control based on preset pressure limits.
Can the alarm point be adjusted?
Yes. The contact pointer can usually be adjusted to the required pressure value within the gauge range.
What contact types are available?
Common options include single contact, double contact, normally open contact, normally closed contact, upper limit contact, and lower limit contact.
What industries use electric contact pressure gauges?
They are used in water supply systems, pump stations, compressors, hydraulic systems, pneumatic systems, boilers, industrial pipelines, and automation equipment.
Can you customize the pressure range and connection?
Yes. Pressure range, dial size, thread type, connection direction, contact type, and case material can be customized according to project requirements.
Looking for a reliable Electric Contact Pressure Gauge for pump control, pressure alarm, or industrial automation? Contact us with your pressure range, thread connection, contact type, and working medium. We will recommend a suitable model and provide a fast quotation.
