Tachometer with Hourmeter San Giorgio SG181 - 0-4000 rpm
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Technical specifications
Technical specifications
| Product use | Measures engine RPM and operating time |
| Measurement type | Engine load, runtime |
| Measurement subtype | Rotation speed, elapsed time |
| Display type | LCD |
| Measurement range | 0-4000 RPM |
| Measurement unit | RPM, hours |
| Power supply voltage range | 12/24 Vdc |
| Backlit | Oui |
| Panel cutout dimensions mm | 85 |
| Bezel color | Black |
| Mounting type | Flush-mounted |
| Ingress protection | IP67 |
| Communication protocol | Analog signal (W terminal) |
| Calibration method | UP and DOWN pushbuttons |
| Connector type | Screw terminal block |
| Integrated Functions | Hourmeter, Voltage display |
| Manufacturer Model | VSG10445/V |
| Max Input Signal Frequency | 5 |
| Min Input Signal Voltage | 10 |
| Number Of Connector Pins | 4 |
| Pointer Color | White |
Detailed description
Detailed description
The San Giorgio SG181 combines an analog 0-4000 rpm tachometer and an hourmeter on an LCD display. It allows monitoring engine RPM and operating hours from a single dashboard instrument.
Main Features
- fixed range: 0 to 4000 rpm;
- power supply: 12 or 24 V DC;
- cut-out diameter: 85 mm;
- RPM input: alternator W terminal or compatible inductive sensor;
- integrated hourmeter and LED lighting;
- connection via four-way screw terminal block: +, -, W, and lighting;
- IP67 protection rating according to the current Kent datasheet.
Installation and Calibration
For an installation with a W terminal, the SG181 must be calibrated by comparing the displayed RPM to a reference measurement, then adjusting the value with the UP and DOWN buttons. With an inductive sensor, the manual indicates a signal of at least 10 V peak-to-peak and a maximum frequency of 5 kHz.
The range manual mentions other factory-configurable scales. The SG181 / VSG10445-V reference sold here remains the 0-4000 rpm model.
Expert opinion
Expert opinion
« A simple tachometer for engines with W terminal »
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