



Actisense
Actisense Engine Monitoring Unit, Analogue to NMEA 2000, standard configuration
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Actisense EMU-1 is a specialised analogue-to-NMEA 2000 gateway that digitises the output of traditional analogue engine gauges and senders, letting any NMEA 2000 display monitor the engines on a vessel. It reads a wide range of parameters and shares them across the network, so you can add modern engine monitoring without replacing existing analogue instrumentation.
Each EMU-1 provides six gauge inputs, four alarm inputs, two tacho inputs and two user-definable auxiliary inputs, and can monitor two engines that share a common ground where each has three or fewer gauges. The same inputs can instead read fluid levels in up to six tanks, with a configurable instance identifying each tank, and the built-in engine-hours log records running time from the tacho inputs into non-volatile memory. A PC-based configuration tool tailors the unit to the specific engine it is working with, giving a flexible solution across many makes and models.
Housed in a sealed polycarbonate case rated to IP66 with expanded silicone foam gaskets and a waterproof vent, the EMU-1 is fully NMEA 2000 certified, connects via an M12 male backbone connector and mounts to a bulkhead, with an optional DIN rail kit available.
PRODUCT DETAILS
- Converts analogue engine gauge and sender signals to NMEA 2000 messages
- Six gauge, four alarm, two tacho and two auxiliary inputs
- Monitors up to two engines sharing a common ground with one unit
- Can instead read fluid levels in up to six tanks with configurable instances
- Logs engine hours from tacho inputs into non-volatile memory
- PC-based configuration tool suits many engine makes and models
- Fully NMEA 2000 certified with M12 male backbone connector
- Sealed polycarbonate case rated to IP66
- EMU-1 Engine Monitoring Unit
- Pluggable screw terminal connectors
- Self-tapping stainless steel mounting screws
- Quick start guide
No exploded diagram available for this product.
No compatible transducers listed for this product.

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No compatible products found.
Power Supply
| Supply Voltage | 9 to 35V DC |
| Supply Current | Typically < 25mA @ 12V DC |
| Supply Protection | Continuous reverse polarity protection and load dump protection (meets SAE J1113) |
| Supply Connector | Pluggable 2-way screw terminal, 3.5mm pitch |
| Supply Voltage (NMEA 2000 Port) | 9 to 29V DC |
| Supply Current (NMEA 2000 Port) | < 20mA @ 12V DC from NMEA 2000 bus |
| Load Equivalency Number (LEN) | 1 |
| Supply Protection (NMEA 2000 Port) | Continuous reverse polarity protection |
NMEA 2000 Port
| Compatibility | Fully NMEA 2000 certified |
| Speed / Baud Rate | 250kbps |
| NMEA 2000 Connector | M12 Male (A coded) connector |
Gauge Inputs
| Voltage Range | 0 to 35V DC |
| Input Impedance | > 50kΩ |
| Sender Current Feed | 0, 4 or 18mA |
| Accuracy | <= 2% |
| Input Connector | Pluggable 6-way screw terminal, 3.5mm pitch |
| Input Protection | Overvoltage protection to ±40V |
Alarm Inputs
| Voltage Range | 0 to 37V DC |
| Input Impedance | > 50kΩ |
| Threshold Voltage | Configurable, default is 5V |
| Alarm Polarity | Configurable, default is alarm on low input |
| Accuracy | <= 2% |
| Input Connector | Pluggable 4-way screw terminal, 3.5mm pitch |
| Input Protection | Overvoltage protection to ±40V |
Tacho Inputs
| Voltage Range | ±3 to ±60V |
| Input Impedance | > 100kΩ to ground |
| Input Pulse Range | 4 to 30,000Hz |
| Accuracy | <= 1% |
| Sender Compatibility | Ignition coil, alternator ("W", "R" or "AC") terminal, hall effect, VR or inductive sender |
| Threshold | Automatically adjusts to signal level |
| Input Connector | Pluggable 4-way screw terminal, 3.5mm pitch |
| Input Protection | Can withstand an ignition pulse to ±500V |
Engine Log
| Engine Hours | 2 separate engine hour logs internally connected to the tacho inputs. Hours are logged when RPM is present, stored in non-volatile memory |
Mechanical
| Housing Material | Polycarbonate |
| Protective Lid Material | Polycarbonate |
| Sealing Materials | Expanded silicone foam gasket, closed cell polyurethane splash guard and ePTFE waterproof vent |
| Dimensions | 127mm (L) x 106mm (W) x 48mm (H) |
| Weight | 250g |
| Mounting | 4 x 3.5mm lugs to allow panel mount with self-tapping s/s screws (included), optional DIN rail mount (DIN-KIT-1) |
Approvals & Environmental
| Certification | Fully NMEA 2000 Certified |
| EMC | EN 60945 (sections 9 & 10) |
| Environmental Protection | IP65 (PCB housing) |
| Operating Temperature | -20°C to +55°C |
| Storage Temperature | -30°C to +70°C |
| Recommended Humidity | 0 - 93% RH |
| Guarantee | 3 years (5 years if registered) |



