5.39. SENSOR

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Fig. 5.39.1 Schematic of a Wanda Sensor

Purpose

Measures a quantity from the hydraulic system and sends the values via signal lines to other components.

Procedure

After obtaining the hydraulic solution at each time step, the measured quantity is sent to the output channel.

Parameters

Description

input

unit

range

default

Remarks

Sequence number

Real

Meas location

Real

[m]

Offset in sensor height

Remarks

The output channel is located at the centre of the sensor circle.

Sensors can be used to measure hydraulic quantities (eg. head, discharge, velocity) or component specific quantities (eg. valve position, pump speed)

Examples

Figure 3 presents three sensors measuring different quantities along a pipeline:

  • The left sensor is connected to a hydraulic node and is set to measure pressure head.

  • The middle sensor is connected to the downstream end of a pipe and is set to measure discharge (the sensor could also have been connected to the upstream end).

  • The right sensor is connected to a valve and is set to measure the head loss across the valve.

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Fig. 5.39.2 Schematic of a Wanda model where three sensors measure different quantities on a pipeline.