SSR20240409B02 PH Control Unit Vocational Education Equipment

SSR20240409B02 PH Control Unit Vocational Education Equipment

DESCRIPTION

This trainer provides a comprehensive experimental introduction to the fundamentals of control engineering using an example of flow control.

A pump delivers water from a storage tank through a piping system. The flow rate is measured by an electromagnetic sensor, which permits further processing of the measured value by outputting a standardised current signal. A rotameter indicates the flow. The controller used is a state-of-the-art digital industrial controller. The actuator in the control loop is a control valve with electric motor operation. A ball valve in the outlet line enables defined disturbance variables to be generated. The controlled variable X and the manipulating variable Y are plotted directly on an integrated 2-channel line recorder. Alternatively, the variables can be tapped as analogue signals at lab jacks on the switch cabinet. This enables external recording equipment

The unit should include feed tanks, pumps, stirrer, pH electrode, and flowmeters. Complete with the basic control instruments, connections, and all accessories

FEATURES

Specification
[1] trainer for control engineering experiments
[2] flow control process, equipped with standard industrial components
[3] flow rate measurement by electromagnetic sensor
[4] rotameter for direct observation of the flow
[5] generation of disturbance variables by ball valve with scale in outlet line
[6] control valve with electric motor
[7] digital controller, parameterisable as a P, PI or PID controller
[8] 2-channel line recorder
[9] process variables X and Y accessible as analogue signals via lab jacks 

Technical Data

Storage tank: 30L
Centrifugal pump
– power consumption: 250W
– max. flow rate: 150L/min
– max. head: 7m
– speed: 2800min-1
Rotameter: 0…1960L/h
Electromagnetic flow rate sensor: 0…6000L/h 
Control valve with electric motor
– Kvs: 5,7m³/h
– stroke: 5mm
– characteristic curve equal-percentage
– valve-opening position sensor: 0…1000 Ohm

Line recorder
– 2x 4…20mA
– feed rate 0…7200mm/h, stepped
Controller
– process variables X, Y as analogue signals: 4…20mA

Dimensions and Weight
LxWxH: 1000x700x1750mm
Weight: approx. 110kg Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase