This CNG pressure gauge provides a local pressure indication. Listed YC-series variants also have electrical outputs for compatible controllers or indicator modules. Confirm the exact model, dial range and output characteristic before ordering.
Pressure indication and fuel quantity are different measurements. Cylinder pressure can support a fuel-level indication, but temperature and gas conditions affect the relationship. Do not treat a pressure reading as an exact remaining-fuel measurement.
Product Specifications
The ordered model determines the mechanical and electrical specifications. Confirm each option against the product drawing and technical sheet.
| Application | Pressure indication in a compatible CNG system |
|---|---|
| Listed Standard Diameter | Approximately 50 mm; confirm drawing dimensions |
| Listed Case Options | Black steel case with PC sensor cover; confirm supplied construction |
| Window Options | Polycarbonate or glass; confirm variant |
| Dial Range | Confirm the actual scale; available range information must match the ordered variant |
| Permitted Working Pressure | Request the operating limit and application conditions separately from the dial range |
| Accuracy | Confirm the applicable class, error definition and temperature conditions |
| Supply Voltage | 5 V DC or 12 V DC according to the electrical model |
| Electrical Output | Model-specific characteristic; see the reference table below |
| Pressure Connection | Confirm thread standard, size, male/female form and sealing method |
The dial endpoint is not automatically the allowed continuous working pressure. Request operating limits, overload limits and applicable inspection records for the selected gauge.
Which YC-Series Electrical Model Do You Need?
YC-series models use different supply voltages and output directions. Match the gauge to the controller input. Do not substitute models solely because their housings or connectors look similar.
The following table lists the supplied electrical reference values. Confirm the meaning of the pressure tolerances, output tolerances, loading conditions and pressure reference before using these values for calibration.
| Model | Supply | 40 ±10 bar | 70 ±10 bar | 110 ±10 bar | 150 ±10 bar |
|---|---|---|---|---|---|
| YC-01 / 5V | 5 V DC | 4 V | 3 V | 2 V | 1 V |
| YC-02 / 12V | 12 V DC | 9.6 V | 7.2 V | 4.8 V | 2.4 V |
| YC-03 / CB01 | 12 V DC | 1.3 V | 2.3 V | 3.3 V | 4.3 V |
| YC-04 / CB02 | 12 V DC | 3.7 V | 2.7 V | 1.7 V | 0.8 V |
| YC-05 / CB08 | 5 V DC | 3.8 V | 2.8 V | 1.8 V | 0.8 V |
| YC-06 | 12 V DC | 0.8 V | 1.8 V | 2.8 V | 3.8 V |
These points do not define the full transfer curve. Request the complete characteristic, permitted supply range, pin assignment and output-load requirements. Do not extrapolate beyond the documented range.
How Should the Thread Be Selected?
The connection must match the mating component and sealing design. A general list of BSP, NPT, PF or PT options does not identify the thread supplied with one gauge.
Exact thread designation and size
Male or female connection
Parallel or tapered thread form
Required sealing surface and seal
Permitted mounting orientation and tightening instructions
A similar thread diameter does not establish compatibility. Request the connection drawing before selecting adapters or installing the gauge.
Which Accuracy and Test Records Should Buyers Request?
Accuracy must be stated with its definition and applicable conditions. Confirm the accuracy class, applicable standard and permitted error basis for the ordered model.
Pressure calibration: Reference equipment, test points, rising/falling readings and acceptance limits.
Electrical output: Supply voltage, pressure points, output load and measured values.
Leak testing: Test medium, pressure, duration and result.
Environmental claims: Applicable temperature or vibration test conditions.
Traceability: Product model, batch or serial reference and inspection date.
Test documents should cover the ordered gauge. Review our certification information and request applicable records.
What System Details Must Be Matched?
The mounting location and controller determine the required gauge configuration. Confirm the pressure circuit, mechanical connection and electrical input requirements. Engine cylinder count does not determine gauge compatibility.
Pressure circuit and expected operating range
Mating valve or regulator connection
Controller or indicator model
Required supply and output curve
Connector, wiring and mounting requirements
The gauge is one component of the complete CNG system. See our conversion kit component guide for system context.
Frequently Asked Questions
Are all YC-series models powered by 12 V?
No. The listed range includes 5 V and 12 V versions. Check the exact model and wiring instructions. Do not apply vehicle battery voltage to a model specified for a different supply.
Can one YC model replace another?
Replacement requires both mechanical and electrical checks. Compare range, thread, supply voltage, output curve and controller calibration before selection.
Does a 400 bar dial mean continuous operation at 400 bar?
No continuous operating limit is established by the dial endpoint alone. Request the rated operating conditions and permitted pressure limits.
Can the pressure reading show exact remaining fuel?
Pressure is not a direct measurement of remaining fuel mass. Temperature, gas conditions and the system's indication method affect the displayed estimate.
Are industrial gauge sizes included in this product?
Industrial applications require a separate specification review. Provide the medium, range, process connection and environmental requirements rather than assuming the vehicle version is suitable.
Who should install and inspect the gauge?
Qualified CNG personnel should follow the supplied instructions. Confirm the correct pressure connection, sealing method and electrical wiring. Request approved inspection intervals.
Request a CNG Pressure Gauge Quotation
Send the required range and YC-series electrical model for a matched offer. Include the existing gauge label, dial photograph, thread details, controller model, supply voltage and quantity.
Confirm the exact specification before payment. Request the connection drawing, output characteristic, accuracy definition, included accessories, warranty, price and delivery lead time.
