CONMONSense Range

CONMONSense Range is a Standalone, Permanent Mount, Ultrasound Sensor designed to integrate with standard industrial measurement systems

CONMONSense delivers precise, repeatable data about the health of your assets and electrical systems also in the most challenging environment.

Its resonant piezo element is optimized for ultrasound driven lubrication, mechanical fault detection, and monitoring the health of valves, steam, hydraulic systems and electrical defects.

Ultrasound is a true measure of the FITness of your facility. Most assets produce FRICTION, IMPACTING, and TURBULENCE as defect indicators. CONMONSense hears these phenomena at their inception and delivers an analog signal response to your connected measurement system.

With an output range from 4-20 mA (static and/or dynamic) or from 0-10 V, CONMONSense mounts permanently to any asset to provide continuous condition monitoring data.

Avoid unplanned downtime and put the safety of your plant and colleagues first.

CONMONSense Contact Sensor

Permanent contact/structure (IP65) sensor for continuous monitoring bearings lubrication, valves, steam traps, hydraulics systems and rotating assets, even the slowest ones.

CONMONSense Airborne Sensor

Airborne open (IP40) and enclosed (IP65) for inspection of electrical systems.

The design of this sensor allows precise and repetitive measurements to continuously monitor your electrical cabinet’s health. Put the safety of your plant and colleagues first.

Download the sensors datasheets

CONMONSense buying guide

CONMONSense Configuration Interface

Questions concerning CONMONSense Range

CONMONSense RSC (4-20 mA Sensor)

Can I use the 4-20 mA Sensor with Vigilant

How to connect the 4-20 mA sensor to my system (such as a PLC)?

Note that the sensor does need an external 24 VDC supply capable to deliver at least 40 mA.

CONMONSense wiring:

1 = 24 VDC Power supply (+)
2 = Current output (Iout)
3 = 0 V (-)
4 = Communication line (should be left floating if not used)

If your system has a dedicated 4-20 mA input, here is a possible wiring:

If your system does not have a dedicated 4-20 mA but has an analog voltage input, here is a possible wiring:

Note that these wirings are only used as example, you should refer to your system technical document to ensure a correct wiring with your installation.

How to convert the 4-20 mA output into sensor voltage?

Static mode:

Equation for each amplification:

Example: a static output current of 12 [mA] is the result of a sensor output voltage of (0.012 * 10) = 0.120 [V] or 120 [mV] or 101.5 [dB]_µV

Example: a static output current of 12 [mA] is the result of a sensor output voltage of (0.012 * 2.5) = 0.03 [V] or 30 [mV] or 89.5 [dB]_µV

Example: a static output current of 12 [mA] will result in a sensor output voltage of (0.012 / 1.6) = 0.0075 [V] or 7.5 [mV] or 77.5 [dB]_µV

Example: a static output current of 12 [mA] will result in a sensor output voltage of (0.012 / 6.3) = 0.0019 [V] or 1.9 [mV] or 65.5 [dB]_µV

Example: a static output current of 12 [mA] will result in a sensor output voltage of (0.012 / 25.1) = 0.00048 [V] or 0.48 [mV] or 53.5 [dB]_µV

Example: a static output current of 12 [mA] will result in a sensor output voltage of (0.012 / 100) = 0.00012 [V] or 0.12 [mV] or 41.5 [dB]_µV

Dynamic mode:

Equation for each amplification:

Example: a dynamic output current of 1 [mA] will result in a sensor output voltage of (0.001 * 208.25) = 0.20825 [V] or 208.25 [mV] or 106.3 [dB]_µV

Example: a dynamic output current of 1 [mA] will result in a sensor output voltage of (0.001 * 52) = 0.052 [V] or 52 [mV] or 94.3 [dB]_µV

Example: a dynamic output current of 1 [mA] will result in a sensor output voltage of (0.001 * 13) = 0.013 [V] or 13 [mV] or 82.3 [dB]_µV

Example: a dynamic output current of 1 [mA] will result in a sensor output voltage of (0.001 * 3.3) = 0.0033 [V] or 3.3 [mV] or 70.3 [dB]_µV

Example: a dynamic output current of 1 [mA] will result in a sensor output voltage of (0.001 / 1.2) = 0.00083 [V] or 0.83 [mV] or 58.3 [dB]_µV

Example: a dynamic output current of 1 [mA] will result in a sensor output voltage of (0.001 / 4.8) = 0.00021 [V] or 0.21 [mV] or 46.3 [dB]_µV

Note that the dynamic mode is an alternative output (AC) with a bias current (DC) of 12 [mA].

How to communicate with the 4-20 mA sensor?

In order to modify the internal amplification of the sensors or to switch from static to dynamic mode, a communication needs to be established between the system and the sensor.

Using a digital output

If your system has a digital output module you can connect one output to the sensor communication line using this kind of schematic:

Then simply generate pulses according to the CONMONSense datasheet in order to modify the amplification or the mode.

Using a serial communication

It is also possible to communicate using a serial communication with the following specifications:

Protocol: UART
Baudrate: 9600 bps
Data bits: 8
Parity: Even
Stop bit: 1

CONMONSense sensors are using a proprietary protocol described in the datasheet.

Guidelines for amplification control?

The best way to implement an amplification control is by following these simple rules:

Static mode

If the static output current (DC) is higher than 20 [mA] à decrease the amplification by one step (12 [dB])
If the static output current (DC) is lower than 4 [mA] à increase the amplification by one step (12 [dB])

Dynamic mode

If the signal peak is higher than 18 [mA] (or 6 [mA] if bias current is removed) à decrease the amplification by one step (12 [dB])
If the signal peak is lower than 13 [mA] (or 1 [mA] if bias current is removed) à increase the amplification by one step (12 [dB])

Note that the dynamic mode is an alternative output (AC) with a bias current (DC) of 12 [mA].