BALLUFF sensor selection description

What are the considerations for the selection of BALLUFF sensors?

How much accuracy does the BALLUFF sensor require, factors that determine accuracy, nonlinearity, hysteresis, non-repetition, temperature, zero offset scale, and temperature effects. But mainly by nonlinearity, hysteresis, non-repetition, the higher the accuracy, the higher the price.

To determine the pressure of the BALLUFF sensor, first determine the maximum value of the measured pressure in the system. Generally, you need to select a transmitter with a pressure range that is about 1.5 times larger than the maximum value. This is mainly because in many systems, especially in water pressure measurement and processing, there are peaks and constant irregular up and down fluctuations that can damage the pressure sensor. A sustained high pressure value or slightly exceeding the transmitter's calibrated maximum will shorten the life of the sensor, which will also reduce accuracy. A buffer can then be used to reduce the pressure glitch, but this will reduce the sensor's response speed. Therefore, the pressure range, accuracy and stability should be fully considered when selecting the transmitter.

What kind of output signals mV, V, mA and frequency output digital output is required for the BALLUFF sensor? The choice of output depends on various factors, including the distance between the transmitter and the system controller or display, whether there is “noise” or other Electronic interference signals, whether the amplifier, the position of the amplifier, etc. are required. The most economical and effective solution for transmitters with mA output for many OEM devices with short distances between transmitter and controller.

BALLUFF sensor temperature range, usually a transmitter will calibrate two temperature segments, one of which is the normal operating temperature, the other is the temperature compensation range, the normal operating temperature range means that the transmitter is not under working conditions The temperature range at the time of destruction may not reach the performance index of the application beyond the temperature compensation range. The temperature compensation range is a typical range smaller than the operating temperature range. In this range, the working transmitter will definitely meet its performance specifications. Temperature changes affect its output in two ways, one is zero drift, and the other is the full-scale output. For example: +/-X%/°C of full scale, +/-X%/°C of reading, +/-X% of full scale over temperature range, +/-X% of reading within temperature compensation range If there are no such parameters, it will lead to uncertainty in use. The change in the output of the transmitter is caused by a change in pressure or by a change in temperature. Temperature effects are the most complex part of understanding how to use the transmitter. If you need to amplify the output signal, it is best to use a transmitter with built-in amplification. For long-distance transmission or strong electrical interference signals, it is best to use mA-level output or frequency output. In the environment with high RFI or EMI specifications, besides the need to note the choice of mA or frequency output, special protection or filters should be considered.

The type of excitation voltage output signal selected by the BALLUFF sensor determines how the excitation voltage is selected. Many transmitters have built-in voltage regulation, so their supply voltage range is large. Some transmitters are quantitatively configured and require a stable operating voltage. Therefore, the operating voltage determines whether or not to use a sensor with a regulator. When selecting a transmitter, consider the operating voltage and system cost.

Whether the BALLUFF sensor requires an interchangeable transmitter to determine if the required transmitter can accommodate multiple operating systems. This is generally important, especially for OEM products. Once the product is delivered to the customer, the cost of the customer's calibration is considerable. If the product is interchangeable, even changing the transmitter used will not affect the overall system.

The package of the BALLUFF sensor, the package of the transmitter, is often easily overlooked as its frame, however this will gradually reveal its shortcomings in later use. When purchasing the transmitter, you must consider the working environment of the transmitter in the future, how to humidity, how to install the transmitter, whether there will be strong impact or vibration.

The BALLUFF sensor needs to be stable after working overtime. Most transmitters will “drift” after over-employment, so it is necessary to understand the stability of the transmitter before purchasing. This pre-work can reduce future use. There will be troubles in the middle.

Is there a short-distance connection between the BALLUFF sensor and other electronic devices? If a long-distance connection is used, is it necessary to use a connector?