The pressure sensor usually refers to the component-level product of non-standard mV signal output, which is the core component of the pressure transmitter. Due to the weak signal, the demand for an expander increases when the interval is long;
The pressure transmitter is also a pressure sensor in the written sense, but its output signal is a standard general signal, such as 4-20mA, 1-5V, etc., which can be transmitted remotely and can be matched with the standard appearance. At the same time, the pressure value has been calibrated, and the user only needs to set the range on the surface to use it.
Differences between transmitter and sensor:
As skills progress, the meaning of some skill words changes to the point that they are often misunderstood. Sensors are one such example.
Nowadays, people say that the sensor is composed of two parts, that is, the sensitive element and the conversion element. The sensitive element refers to the part of the sensor that can directly sense or respond to the measurement; The conversion element refers to the part of the sensor that converts the measured part of the sensor that is felt or echoed by the sensitive element into an electrical signal suitable for transmission or measurement. Since the output signal of the sensor is generally very weak, it needs to be modulated and amplified. With the development of integration skills, people have installed this part of the circuit and the power supply circuit inside the sensor. In this way, the sensor is able to output a usable signal that is easy to process and transmit.
In the past, when the skills were relatively backward, the so-called sensor refers to the sensitive element mentioned above, and the transmitter is the conversion element mentioned above.
There are many varieties of transmitters, and the transmitters used in the industrial control surface mainly include temperature transmitters, pressure transmitters, flow transmitters, current transmitters, voltage transmitters and so on.
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