[email protected] | Installation manual Omnicomm 2.0 terminals v2.2
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APPENDIX E
Recommendations for the selection of sensors to connect to universal inputs
of Omnicomm 2.0 Terminals
Types of physical quantities, measured by sensors, types of sensors that are suitable for such measurement
and input types are listed in Table 2.
Table 2
Measured value
Sensors/sensor types
Input type
Consumption of fuel, reagents,
fertilisers, etc.
Instantaneous
fl
ow meters with impulse
transmitters
Impulse
(Frequency-modulated
signal, the frequency of
which is proportional
to the measured or
recorded value)
Monitoring of additional engine
frequency or any other additional
equipment working from power take-
o
ff
drive
Proximity sensor that determines the
frequency of rotation of the shaft (pinion,
drive gear etc.)
Fuel level in the additional fuel tank or
in the tank with hydraulic
fl
uid
Sensor of physical quantities, fuel level
sensor
LLS-AF in frequency output mode
Counting frequent (more frequent than
the collection period) events:
lifting/lowering of excavator bucket,
counting the number of passengers in
public transport, unloading/loading
goods from/to a conveyor, etc.
Contact Switches, Proximity Sensors that
are triggered by each event
Fuel level in the additional fuel tank or
in the tank with hydraulic
fl
uid
Sensor of physical quantities, LLS-AF fuel
level sensor in the analog or frequency
output mode (connection method
recommended for LLS-AF)
Analog
(Voltage or current
signal, value of which
is proportional or
inversely proportional
to the measured value)
Temperature, pressure, humidity, etc.
Sensors of temperature, pressure,
humidity, etc. or analog converters with
output voltage or current signal
Turning on or o
ff
of additional
equipment (engine, burner,
attachments)
Proximity sensors, physical value sensor
(for example, pressure) or other signal
sources
Potential (Signal for
turning something on,
accompanied by the
emergence of certain
voltage (potential)
on a wire)
Counting of rare events (less frequent
than period of data collection):
passenger getting in a taxi, truck body
lifting, lowering of a plough, etc.
Contact Switches, Proximity Sensors
Please remember that before installing a new sensor, we recommend that you examine the vehicle and
check if any other sensor or signal that can provide you with information on the correct physical quantities
that were already installed there.
Analog temperature and pressure sensors are selected primarily based on their installation capabilities.
The design of the sensor should allow for its installation, and the measured value must be in the range of
the sensor. The sensor also must have a current or voltage output signal. If the sensor has resistance output
signal or output signal of another type, it must be used together with suitable normalising transducer.
Note: “normalising transducer” is an umbrella term for a group of devices that converts one output signal
into another, usually into a uniform current or voltage signal. They may have such additional functions as
