Data Sheet |
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| Part No.: |
FV25A |
| Product: |
Reversible Marine Tachometer and Monitor |
| Product Range: |
Marine Tachometers |
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Specifications |
| SUPPLY: |
24V DC and 110 or 240V AC |
| DIMENSIONS: |
Card: 162 x 117 mm |
| RANGE SELECTION: |
DIL switch and pre-set pot |
| SENSORS: |
Magnetic or proximity |
| FREQUENCY RANGE: |
20Hz to 5 kHz |
| METER OUTPUT: |
0-10V (20mA max.) |
| RELAYS: |
Two - contacts rated 1 amp @ 240V AC resistive |
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Features
- Switchable frequency ranges via onboard DIL switch
- Meter drive output for multiple indicators
- Reversing relay contacts for alarms and interlocks
- Magnetic or Inductive proximity sensor versions available
- 24V power supply with AC mains add on module
- Centre zero or standard meter drive system
- Fused meter drive circuit
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Analogue speed indication with reversing interlock facility.
The FV25A Marine Tachometer is a heavy duty speed indication and monitoring system which is suitable for use with reversible machinery.
Sensing is carried out by two magnetic or proximity sensors operating in conjunction with a toothed wheel, symmetrically spaced bolt heads or similar ferrous parts. The sensors are mechanically arranged to give signals which identify the direction of rotation.
The control card processes the sensor signals and produces a voltage proportional to speed and direction. Isolated relay contacts are available which may be used for interlocking purposes.
When used with a centre zero meter the system becomes a complete reversible speed indication system.
Applications include; Marine Engine speed indications and monitoring, Rotational interlock for reversing machinery, Direction indication for variable speed drives, Mobile equipment monitoring systems. |
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