JUMO PINOS L02, Operating Manual

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2 Introduction
2 Introduction
2.1 Description
The JUMO PINOS L02 flow sensor measures and monitors flow velocities of liquid media. The measure-
ment method is based on the calorimetric measuring principle and does not include any moving parts
which can influence the flow profile negatively. The measuring principle is based on the cooling of a heat-
ing element. Due to the flow behavior of the liquid, heat is taken from the temperature probe. The higher
the flow velocity, the higher the heat emission of the heating element. The resulting measured value can
be output via an analog output of 4 to 20 mA or open or close a switching output. A device version with
analog and switching output is also available. Both output variants can be configured for the output of
the flow velocity or the medium temperature. The status of the device is displayed using 3 LEDs.
The JUMO PINOS L02 can be used for a nominal pressure up to 75 bar and in an admissible flow range
of 0 to 300 cm/s.
To allow for simple startup of the flow sensor, it is equipped with a micro USB interface while a setup
program is also available as an accessory. A switching point can be set on-site using a push-button on
the user interface. The push-button can also be used for flow calibration if the process requirements (for
example, medium, flow velocity) do not correspond to the default settings. Due to its robust design with
protection type IP65/67, the flow sensor can also be used in difficult environmental conditions.
The main areas of use are the monitoring of cooling water circuits, pumps, heat exchangers, lubrication
circuits, leakage monitoring for process lines, and dry-run protection for pumps.
Type 406041