A typical example in the field of power generation is processing temperature sensor signals to monitor the turbine, generator, and shaft temperature in facilities such as reservoir hydroelectric power plants:
Accurate temperature measurement is essential for operating a hydroelectric plant. It protects the plant from premature wear, damage, and failure due to increased friction. This is detected through temperature.
Analog signal processing in non-intrinsically safe applications
In electrotechnical systems, electromagnetic or high-frequency disturbance variables can adversely affect the transmission of often sensitive measured value signals. This applies in particular to the weak signals delivered by the sensors.
With our signal conditioners and measuring transducers, you can handle the entire interference-free signal transmission from the sensor level to the control level.
MINI Analog Pro signal conditioners with plug-in connection technology
Interference-free signal transmission and easy handling Advantages
- Modern circuit technologies with a maximum deviation of up to 0.05%
- Rapid readiness for use on site with products already preconfigured to your application before leaving the factory
- Step-by-step commissioning or maintenance of the application using plug-in connection terminal blocks with disconnect function
- Simple, uninterrupted multimeter current measurement via integrated service sockets
- Configuration baseline via DIP switches as well as advanced configuration and monitoring via software or MINI Analog Pro app
Highly compact MINI Analog Pro signal conditioner and measuring transducer
Process value recording without malfunction
In process engineering systems in particular, the sensor and control level are connected to each other via sometimes very long cables. The resulting risk of negative influence on measurement signals is high. As a result, deviations arise that can have a significant impact on the entire measurement chain. Signal conditioners and measuring transducers, in this case from the MINI Analog Pro product family, provide a remedy.
Typical examples here are:
Flow monitoring and signaling using a 4-way signal conditioner
The freely adjustable 4-way signal conditioner with switching output enables you to set the parameters for your application according to your specific requirements. The transistor output is available as a threshold switch, for example for controlling signal devices. You can configure eight different switching behaviors.
Flow monitoring using a 3-way signal conditioner
The 3-way signal conditioners with fixed values represent a price-optimized alternative in multi-channel standard applications.
Level monitoring using a repeater power supply
The repeater power supply supplies the transmitter located in the field and electrically isolates the input signal from the output signal. The device can be used in both isolator and repeater power supply operation.
The HART-transparent repeater power supplies also make it possible to configure and monitor the devices in the field via HART.
Level monitoring using a threshold value switch
With the frequency converter with limit value functionality you can acquire and monitor analog signals from 0 to 24 mA or from 0 to 12 V.
Frequency signals of between 0 and 11 kHz and PWM signals from 0 to 100% are possible on the output side. In addition, the output can also be operated as a switching output, which means that two switching thresholds can be set independently of one another.
Pressure monitoring using a passive isolator
Since the output-loop-powered measuring transducer is supplied via the current loop of an active analog input module, no additional auxiliary power is required. On the input side, you can connect analog signals from 2 to 40 mA or from 50 mV to 30 V.
Temperature measurement using a resistance thermometer with temperature transducer
The freely adjustable temperature transducer enables you to connect resistance thermometers and remote resistance-type sensors with 2-, 3-, and 4-conductor connection technology. The individual measured temperature values are converted into a linear and freely adjustable current or voltage signal.
It is possible to connect additional sensors (resistance thermometers, such as PTC/NTC) via a self-definable characteristic curve. This offers a high degree of flexibility.
Temperature measurement using a thermocouple with temperature transducer
The freely adjustable temperature transducer enables you to connect various thermocouples. The individual measured temperature values are converted into a linear and freely adjustable current or voltage signal.
It is possible to connect further sensors (mV signals) via a self-definable characteristic curve. This offers a high degree of flexibility.
Potentiometer measurement using a measuring transducer
The configurable potiposition transducer with automatic potentiometer detection is used to connect potentiometers from 0 ... 100 Ω to 0 ... 100 kΩ. The individual position values are converted into a linear and freely adjustable current or voltage signal.
Real-world examples
In machine building and systems manufacturing, the rotational speeds of motors, such as separators, are often monitored with tachometers.
A separator uses centrifugal force to separate substances into their constituent parts. Here, the rotational speed of the motor and the drum must be monitored.
MINI Analog Pro signal conditioners and measuring transducers convert the digital signal of the inductive sensors used for the application into an analog output signal and prepare it for the controller.
Sensors that generate sensitive signals in the mV range are used in offshore wind power generation systems. Examples here include monitoring the rotor blades for stretching or icing.
The signals are acquired by MINI Analog Pro signal conditioner and measuring transducers, converted, and transferred into a digital communication protocol.
A classic example for shipbuilding is the temperature monitoring of engines.
Measuring the temperature of oil in a pipeline is typical for these applications.
To do this, the temperature sensors are mounted directly on the pipeline. The sensor signal is acquired by our temperature transducers, converted accordingly, and transmitted to the PLC.
In sewer system management, it is important to monitor basin capacities. This primarily involves using two-wire level sensors that are supplied by repeater power supplies. At the same time, the sensor signals are acquired by the repeater power supply, galvanically isolated, and transmitted with amplification to the control system.
Another example is the flow meter at the inlet pipes leading from the sewage system into the treatment plant. The acquisition is done via electromagnetic flow meters (EMFs), which are connected to the control system via UI signal conditioners and measuring transducers.
The HART signal is a common communication standard here.
In the pharmaceutical industry, all process data must be monitored continuously. These include, for example, pressure, temperature, flow, and speed. Valves and other actuators must also be controlled. Signal conditioners and measuring transducers isolate, convert, amplify, and filter the signals in a safe range, evaluate them, and control actuators.
One example is flow measurement and control in dosing systems.