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Specially designed for air suspension and braking system, the single dial synchronously displays two independent air pressure data with an accuracy of 1.6 F.S. Compared with the installation of two single-needle instruments, 50% of the instrument panel space is saved, and millisecond-level pressure difference comparison is realized through red and black two-color pointers to ensure the balance of the gas path and supply large-scale demand.
Range:
0-200 PSI (0-14 Bar)
Size:
52mm (2-1/16 “)
Accuracy:
± 1.6% F.S
Using independent double Bourdon tube movement structure, single dial at the same time through the red, black two color pointer feedback two pressure. Compared with the traditional single needle scheme, the time for the operator to read the air path balance state is shortened by 60%, which effectively prevents the equipment from tilting or braking failure caused by unilateral air pressure imbalance.
Built-in reinforced copper alloy movement, the gear ratio is precisely calibrated, and the full range accuracy is controlled within ± 1.6% (ASME B40.1 Grade B). The gear clearance tolerance is less than 0.05mm, which reduces reading drift caused by backlash and ensures better than 98% data linearity in the range of 0-200 PSI.
For the high-frequency vibration environment of vehicles and heavy machinery, glycerin filling or mechanical dampers can be selected inside the watch body. Effectively absorb the mechanical vibration in the frequency range of 50Hz-2000Hz, prevent the pointer from shaking, reduce the mechanical wear rate of the movement by 70%, and extend the service life under harsh working conditions.
Equipped with 12V independent power supply LED backlight module, polycarbonate watch mirror with light transmittance up to 92% ensures uniform light distribution. At night or in low-light industrial environments, the reading sharpness is improved by 3 times, and the circuit life exceeds 50,000 hours.
The bezel is made of SUS304 stainless steel, with IP65 sealing design, effectively blocking dust and water vapor intrusion. Under the extreme temperature difference environment of -20°C to +60°C, the dial is not atomized and does not deform. It passes the 72-hour salt spray test and is suitable for outdoor construction machinery and coastal working environment.
The back provides two independent 1/8 “NPT or 1/4” NPT brass threaded interfaces, conforming to ANSI/ASME thread standards. It can be directly adapted to 95% of the mainstream air suspension control valve and air storage tank without additional conversion joints, and the installation efficiency is improved by 40%.
| Parameter item | Technical Specifications |
| Product Name | Dual Needle Air Pressure Gauge |
| Dial Size | 52mm (2 inches) / 60mm optional |
| Pressure Range | 0-150 PSI / 0-200 PSI / 0-220 PSI (Bar unit optional) |
| Accuracy Class | ±1.6% F.S (ASME B40.1 Grade B) |
| Wetted Parts | Brass Alloy |
| Case Material | Black electrophoretic steel/304 stainless steel bezel |
| Connection thread | 1/8″ NPT or 1/4″ NPT (dual rear interface) |
| Operating temperature | -20°C to +60°C (-4°F to 140°F) |
| Protection rating | IP54 (Standard Type) / IP65 (Oil-filled Type) |
| Backlight voltage | 12V DC (LED) |
Outstanding advantages compared to similar products:
Intuitive reading and space utilization: Compared with installing two independent single-needle barometers, this product integrates the pressure of Front/Rear or Tank/Spring into a single 52mm interface. This not only saves 50% of the opening area for the console, but also enables the operator to judge at a glance whether the left and right airbags or the front and rear air paths are balanced through the relative positions of the double pointers (such as “scissors difference”), without reading the numbers separately for mental calculation.
Dynamic response and anti-interference ability: Different from the signal delay existing in low-end electronic sensors, the mechanical Bourdon tube structure of this product provides real-time pressure feedback with zero delay. Combined with the optimized damping mechanism, when the air pressure changes rapidly (such as air suspension lifting), the pointer followability is 25% higher than that of the ordinary oil filling meter, and the problem of random code of the electronic watch in strong electromagnetic interference environment will not occur.
For retrofit vehicles, truck cabs and compact industrial control cabinets, compress the two-way monitoring requirements to a standard 2-inch hole, freeing up more space for switches or controllers.
For heavy truck driving and air compressor working environment, through high viscosity damping oil or mechanical damping structure, eliminate the pointer caused by resonance “virtual shadow”, to prevent the movement of internal hairspring due to metal fatigue fracture.
For long-distance transportation at night or dark room operation, the light guide plate technology is used to replace the direct light beads, providing soft and uniform backlight, and solving the problem that the glare of ordinary instrument lights affects driving safety or the brightness is insufficient and cannot be read.
It is suitable for enterprises that produce automobile air suspension kits. As the core monitoring component, this product helps the end user to accurately adjust the airbag pressure and ensure the balance of the vehicle’s driving posture. It is a standard component of the pneumatic control system.
Applicable to the purchaser responsible for the maintenance of the brake system of the commercial vehicle. It is used to monitor the pressure of the air storage tank of the dual-circuit pneumatic brake system, which meets the DOT vehicle safety inspection standard to ensure that the brake system has no leakage.
Suitable for engineers who design automated production lines or pneumatic presses. It is used to compare the pressure at the input end and the output end on the same panel (differential pressure monitoring), or to monitor the synchronous action of the two cylinders to ensure the consistency of the production process.
Suitable for RV, SUV and low lying car modification service providers. It is used for integrated instrument panel modification. It needs to provide multi-channel air path status display in limited cockpit space to enhance the sense of professionalism and technology of the interior.
Expected useful life
Based on ASME B40.100 standard test, the design life of the mechanical movement of this product is 100,000 full range cycles. The expected trouble-free operation time is more than 5 years under standard operating environment (no corrosive gas, temperature -20~60°C). A zero calibration check every 12 months is recommended.
Pre-sales and after-sales service
We offer a full 12-month warranty covering precision failures or leaks due to manufacturing defects. Provide 3D model files and opening size drawings before sales, and support OEM disk customization (Logo/scale). The after-sales team promises to respond to technical inquiries within 24 hours and complete the defective product detection and replacement process within 5 working days.
Normally, the red pointer and the black (or green) pointer are connected to two independent air inlets on the back of the meter. Users can customize the connection logic, for example, connect red to left/front airbag and black to right/rear airbag. The two pointers operate independently on the same dial without interfering with each other.
No need. This is the 1 purely mechanical instrument. It is directly connected to the NPT interface on the back of the instrument through the air pipeline to sense pressure. It does not require an electronic pressure sensor. Its response speed is faster than that of an electronic watch and its failure rate is lower.
The standard interface is 1/8 “NPT or 1/4” NPT external thread (see parameter table for details). If your trachea is a 1/4 “or 3/8” quick insertion tube (PTC), you need to purchase the corresponding “NPT to PTC” female connector for transfer.
Support. The meter is equipped with two wires for LED lighting, usually a red wire (positive 12V) and a black wire (ground). It is recommended to connect in parallel to the headlight switch or ignition switch (ACC) of the vehicle to start with the vehicle or turn on with the headlights.
Mechanical watches may have a slight zero offset after severe vibration during long-distance transportation. Some models are equipped with a surface adjustment screw or an internal exhaust plug (for oil filling gauges), which is usually solved by slightly loosening the exhaust plug to balance the internal and external air pressure. If the deviation exceeds 5%, please contact the after-sales replacement.
The oil-filled case is filled with glycerin, which is mainly used in high vibration environment (such as air compressor or racing car). The oil can dampen pointer vibration and lubricate the movement. Dry type is suitable for ordinary pneumatic control environment with less vibration, with lower cost and clearer reading (no oil refraction).
Specially designed for air suspension and braking system, the single dial synchronously displays two independent air pressure data with an accuracy of 1.6 F.S. Compared with the installation of two single-needle instruments, 50% of the instrument panel space is saved, and millisecond-level pressure difference comparison is realized through red and black two-color pointers to ensure the balance of the gas path and supply large-scale demand.
Range:
0-200 PSI (0-14 Bar)
Size:
52mm (2-1/16 “)
Accuracy:
± 1.6% F.S
Using independent double Bourdon tube movement structure, single dial at the same time through the red, black two color pointer feedback two pressure. Compared with the traditional single needle scheme, the time for the operator to read the air path balance state is shortened by 60%, which effectively prevents the equipment from tilting or braking failure caused by unilateral air pressure imbalance.
Built-in reinforced copper alloy movement, the gear ratio is precisely calibrated, and the full range accuracy is controlled within ± 1.6% (ASME B40.1 Grade B). The gear clearance tolerance is less than 0.05mm, which reduces reading drift caused by backlash and ensures better than 98% data linearity in the range of 0-200 PSI.
For the high-frequency vibration environment of vehicles and heavy machinery, glycerin filling or mechanical dampers can be selected inside the watch body. Effectively absorb the mechanical vibration in the frequency range of 50Hz-2000Hz, prevent the pointer from shaking, reduce the mechanical wear rate of the movement by 70%, and extend the service life under harsh working conditions.
Equipped with 12V independent power supply LED backlight module, polycarbonate watch mirror with light transmittance up to 92% ensures uniform light distribution. At night or in low-light industrial environments, the reading sharpness is improved by 3 times, and the circuit life exceeds 50,000 hours.
The bezel is made of SUS304 stainless steel, with IP65 sealing design, effectively blocking dust and water vapor intrusion. Under the extreme temperature difference environment of -20°C to +60°C, the dial is not atomized and does not deform. It passes the 72-hour salt spray test and is suitable for outdoor construction machinery and coastal working environment.
The back provides two independent 1/8 “NPT or 1/4” NPT brass threaded interfaces, conforming to ANSI/ASME thread standards. It can be directly adapted to 95% of the mainstream air suspension control valve and air storage tank without additional conversion joints, and the installation efficiency is improved by 40%.
| Parameter item | Technical Specifications |
| Product Name | Dual Needle Air Pressure Gauge |
| Dial Size | 52mm (2 inches) / 60mm optional |
| Pressure Range | 0-150 PSI / 0-200 PSI / 0-220 PSI (Bar unit optional) |
| Accuracy Class | ±1.6% F.S (ASME B40.1 Grade B) |
| Wetted Parts | Brass Alloy |
| Case Material | Black electrophoretic steel/304 stainless steel bezel |
| Connection thread | 1/8″ NPT or 1/4″ NPT (dual rear interface) |
| Operating temperature | -20°C to +60°C (-4°F to 140°F) |
| Protection rating | IP54 (Standard Type) / IP65 (Oil-filled Type) |
| Backlight voltage | 12V DC (LED) |
Outstanding advantages compared to similar products:
Intuitive reading and space utilization: Compared with installing two independent single-needle barometers, this product integrates the pressure of Front/Rear or Tank/Spring into a single 52mm interface. This not only saves 50% of the opening area for the console, but also enables the operator to judge at a glance whether the left and right airbags or the front and rear air paths are balanced through the relative positions of the double pointers (such as “scissors difference”), without reading the numbers separately for mental calculation.
Dynamic response and anti-interference ability: Different from the signal delay existing in low-end electronic sensors, the mechanical Bourdon tube structure of this product provides real-time pressure feedback with zero delay. Combined with the optimized damping mechanism, when the air pressure changes rapidly (such as air suspension lifting), the pointer followability is 25% higher than that of the ordinary oil filling meter, and the problem of random code of the electronic watch in strong electromagnetic interference environment will not occur.
For retrofit vehicles, truck cabs and compact industrial control cabinets, compress the two-way monitoring requirements to a standard 2-inch hole, freeing up more space for switches or controllers.
For heavy truck driving and air compressor working environment, through high viscosity damping oil or mechanical damping structure, eliminate the pointer caused by resonance “virtual shadow”, to prevent the movement of internal hairspring due to metal fatigue fracture.
For long-distance transportation at night or dark room operation, the light guide plate technology is used to replace the direct light beads, providing soft and uniform backlight, and solving the problem that the glare of ordinary instrument lights affects driving safety or the brightness is insufficient and cannot be read.
It is suitable for enterprises that produce automobile air suspension kits. As the core monitoring component, this product helps the end user to accurately adjust the airbag pressure and ensure the balance of the vehicle’s driving posture. It is a standard component of the pneumatic control system.
Applicable to the purchaser responsible for the maintenance of the brake system of the commercial vehicle. It is used to monitor the pressure of the air storage tank of the dual-circuit pneumatic brake system, which meets the DOT vehicle safety inspection standard to ensure that the brake system has no leakage.
Suitable for engineers who design automated production lines or pneumatic presses. It is used to compare the pressure at the input end and the output end on the same panel (differential pressure monitoring), or to monitor the synchronous action of the two cylinders to ensure the consistency of the production process.
Suitable for RV, SUV and low lying car modification service providers. It is used for integrated instrument panel modification. It needs to provide multi-channel air path status display in limited cockpit space to enhance the sense of professionalism and technology of the interior.
Expected useful life
Based on ASME B40.100 standard test, the design life of the mechanical movement of this product is 100,000 full range cycles. The expected trouble-free operation time is more than 5 years under standard operating environment (no corrosive gas, temperature -20~60°C). A zero calibration check every 12 months is recommended.
Pre-sales and after-sales service
We offer a full 12-month warranty covering precision failures or leaks due to manufacturing defects. Provide 3D model files and opening size drawings before sales, and support OEM disk customization (Logo/scale). The after-sales team promises to respond to technical inquiries within 24 hours and complete the defective product detection and replacement process within 5 working days.
Normally, the red pointer and the black (or green) pointer are connected to two independent air inlets on the back of the meter. Users can customize the connection logic, for example, connect red to left/front airbag and black to right/rear airbag. The two pointers operate independently on the same dial without interfering with each other.
No need. This is the 1 purely mechanical instrument. It is directly connected to the NPT interface on the back of the instrument through the air pipeline to sense pressure. It does not require an electronic pressure sensor. Its response speed is faster than that of an electronic watch and its failure rate is lower.
The standard interface is 1/8 “NPT or 1/4” NPT external thread (see parameter table for details). If your trachea is a 1/4 “or 3/8” quick insertion tube (PTC), you need to purchase the corresponding “NPT to PTC” female connector for transfer.
Support. The meter is equipped with two wires for LED lighting, usually a red wire (positive 12V) and a black wire (ground). It is recommended to connect in parallel to the headlight switch or ignition switch (ACC) of the vehicle to start with the vehicle or turn on with the headlights.
Mechanical watches may have a slight zero offset after severe vibration during long-distance transportation. Some models are equipped with a surface adjustment screw or an internal exhaust plug (for oil filling gauges), which is usually solved by slightly loosening the exhaust plug to balance the internal and external air pressure. If the deviation exceeds 5%, please contact the after-sales replacement.
The oil-filled case is filled with glycerin, which is mainly used in high vibration environment (such as air compressor or racing car). The oil can dampen pointer vibration and lubricate the movement. Dry type is suitable for ordinary pneumatic control environment with less vibration, with lower cost and clearer reading (no oil refraction).