superheat6k
Well-known member
Following the issue with my starboard engine seizure I am now as a part of the overhaul / repair / reinstatement project equipping the engines with a dedicated monitoring system. This will be based upon the Industrial Controller we use in my business for our Water Chillers because it offers an extensive range of Input channels and Output relays, is very accurate, runs on 12vdc, and (for me anyway) is relatively low cost.
It produces the data for export in a Bacnet or Modbus format, although I have found a device that can convert Bacnet to NMEA2000. This might be needed for the display, although I am looking at a Wifi Tablet option
Here is my list of parameters so far. 32 inputs is the qty of the base controller plus 1 expansion board (16 each). Those marked V are virtual inputs derived from other parameters - I can create lots of these as needed, extra to the base 32 channels.
Not quite resolved the tacho pulse converter to 0-5VDC, although we are neaely there on the DC shunt 75 mV to 0-5VDC signal.
For the flow switch on the seawater side (the most crucial part for me) I have found a 32mm paddle in the US, but I am considering a far simpler and smaller flow switch on the shaft seal bleed line.
Once it is established a separate data router will give me full two way connectivity.
Anything here missing or perhaps superfluous ?
It produces the data for export in a Bacnet or Modbus format, although I have found a device that can convert Bacnet to NMEA2000. This might be needed for the display, although I am looking at a Wifi Tablet option
Here is my list of parameters so far. 32 inputs is the qty of the base controller plus 1 expansion board (16 each). Those marked V are virtual inputs derived from other parameters - I can create lots of these as needed, extra to the base 32 channels.
Not quite resolved the tacho pulse converter to 0-5VDC, although we are neaely there on the DC shunt 75 mV to 0-5VDC signal.
For the flow switch on the seawater side (the most crucial part for me) I have found a 32mm paddle in the US, but I am considering a far simpler and smaller flow switch on the shaft seal bleed line.
Once it is established a separate data router will give me full two way connectivity.
Anything here missing or perhaps superfluous ?
Common | Port | Stbd | Sensor type | Fitting | Qty | Alarm | Critical alarm | RO for alarms | |
| Engine RPM | Yes | Yes | Pulse counter ? | - | 2 | No | |||
| Oil pressure | Yes | Yes | 100 PSI | 1/8" NPT | 2 | Yes < 1 bar | Yes | 1 | |
| Engine on by OP > 0.5B (run hours) | Yes | Yes | User Logic | - | No | 2 Virt | |||
| Sump temperature | Yes | Yes | T100 | 1/4” well into front drain plug | 2 | Yes > TBA | Gen | ||
| FW temperature cooler in | Yes | Yes | T100 | TBA - Header tank ? | 2 | Yes > 96oC | Yes | 1 | |
| FW temperature cooler out | Yes | Yes | T100 | 1/2” Well at return inlet | 2 | Yes > TBA oC | 1 | ||
| FW Cooler D T | Yes | Yes | User Logic | - | 2V | No | |||
| Exhaust elbow temp | Yes | Yes | T100 | T B A | 2 | Yes > TBA | Yes | 1 | |
| Gear oil pressure | Yes | Yes | 500 PSI | M10 x 1 F to 1/8” NPTF | 2 | Yes < TBA | 1 | ||
| Gearbox temp | Yes | Yes | T100 | 3/8” NPSF to 1/4” well | 2 | Yes > TBA | 1 | ||
| Seawater flow | Yes | Yes | Digital | 32mm hose | 2 | Yes when off AND Oil press > 1 Bar | Yes | 1 | |
| Voltage | Yes | Yes | Voltage divider cct | - | 2 | < 11 volts | 1 | ||
| Alternator amps | Yes | Yes | ? DC amps | - | 2 | No | |||
| Seawater inlet temp | Yes | Yes | T100 | Well into SW strainer | 2 | No | |||
| Inlet manifold press (turbo boost) | Yes | Yes | 30 PSI | 1/8” NPT on inlet manifold | 2 | No | |||
| Engine room temp | Yes | T100 | Dangle | 1 | Yes > TBA | Yes | 1 | ||
| Outside temp | Yes | T100 | Under door rail | 1 | No | ||||
| Cabin temp | Yes | T100 | Somewhere | 1 | No | ||||
| Bilge pump on | Yes | Digital relay | 1 | On pulse count | 1 | ||||
| FW pump on | Yes | Digital relay | 1 | On pulse count | 1 | ||||
| Fridge temp | Yes | T100 | 1 | Yes > 8oC | 1 | ||||
32 | 12 |
for 5mins that was, still scary!! 
