Instruments
Electrical Gauges: Precision Monitoring
This category includes 17 electrical gauges, with display sizes ranging from 5-inch (117 mm) large-face gauges, 85 mm GPS speedometers, and 80 mm tachometers, up to a 52 mm (2-1/16") gauge series. The products are intended for OEM / ODM integration and OEM / aftermarket applications on heavy-duty trucks, commercial buses, industrial equipment, generator sets, and commercial marine vessels. The series is built on stepper motor and air core movements with PCB circuit design, paired with dedicated sensors for oil pressure, coolant temperature, fuel level, and air pressure, with applications covering engine RPM measurement, oil pressure monitoring, coolant and oil temperature monitoring, fuel level display, voltage and current monitoring, and brake air pressure monitoring.
EW80531
• Electrical Voltmeter (Air Core Movement)
• 8–16 VDC Air Core Voltage Measurement
Technical Specifications
|
Diameter |
2-1/16" (Ø 52 mm) |
|
Movement |
Air Core Movement |
|
Full-Scale Range |
8 – 16 VDC |
|
Accuracy |
±3% of full scale |
|
Standards |
Compliant with JIS D0204 |
|
Service Life |
8 V to full-scale: 30000 cycles |
|
Backlight |
Incandescent lamp |
|
Operating Voltage |
12 / 24 VDC |
|
Automotive-Grade Operating Temperature Range |
-40°C to +85°C |
|
Storage Temperature |
Per SAE J1810: -65°C to +85°C |
|
Ingress Protection |
IP67 (front side) |
Product Description
Overview
The EW80531 is a 52 mm (2-1/16") electrical voltmeter with an air core movement and PCB circuit design. Measurement range 8–16 VDC with ±3% accuracy, for battery voltage and charging system monitoring on commercial vehicles, heavy-duty equipment, and generator sets, in both OEM dashboard integration and aftermarket replacement applications. OEM / ODM customization is available on request.
Compliant with JIS D0204. 30000-cycle service life, incandescent (LAMP) backlight, and automotive-grade -40°C to +85°C operating temperature.
Key Features
▸ Battery and Charging Monitoring
8–16 VDC range for monitoring battery and charging system status.
▸ Dual-Voltage Compatibility
Operates on 12 / 24 VDC vehicle systems.
▸ Air Core Movement
Smooth pointer motion under higher-frequency vibration conditions.
▸ Customizable Specifications
Display layout and measurement ranges can be configured per OEM requirements.
Applications
For voltage monitoring on heavy-duty trucks, buses, coaches, agricultural machinery, construction equipment, forklifts, generator sets, and commercial marine vessels. Supports both OEM integration and aftermarket upgrades.