The single-needle pressure gauge is primarily used for measuring pressure in locomotive air compressors, hydraulic systems, or air reservoirs. Its operating principle is based on the deformation of a Bourdon tube under the action of medium pressure. This deformation is transmitted and amplified through a mechanical linkage, driving the pointer to deflect across the calibrated dial to indicate the measured pressure value.
This pressure gauge features an axial structure and is capable of measuring two identical or different pressures simultaneously. It is equipped with a ring-shaped LED light source positioned at the top of the dial, providing soft illumination that enhances visibility and facilitates observation during nighttime operation.
Item | Specification |
Measuring Range | 0 ~ 1200 kPa |
Accuracy Class | Class 1.0 |
Operating Temperature | -40°C to +70°C, with relative humidity not exceeding 95% |
Temperature Influence | When ambient temperature deviates from 20°C ±5°C, additional error ≤ 0.4%/10°C |
Illumination Voltage | DC 110V ±20% |
Dielectric Strength | 1500V / 50Hz, duration 1 minute |
Standard Compliance | Complies with GB/T 1226-2010 (General Pressure Gauge Standard) |
