Overview and advantages of temperature transmitter

Overview and advantages of temperature transmitter

Temperature transmitter is essentially a form of amplifier, which can filter, adjust and enhance the signal, so as to better receive the signal digital output where the temperature is read. This can be routed through twisted pair to any place where the temperature needs to be displayed or recorded.

Historically, it has been normal for temperature sensors to be directly connected to display or data recording equipment. However, engineers are increasingly aware of the advantages of using temperature transmitters. These include:

Improve signal integrity, especially over long distances. The use of shielded twisted pair can provide higher EMI resistance.

Standardized output. Unlike direct wired outputs, 4 to 20 mA signals are compatible with most data acquisition, recording and display systems, enabling hardware standardization

Improve accuracy. Reducing the Ma output to a portion of the sensor range can improve resolution and produce higher accuracy. In addition, some transmitters can detect thermocouple drift and give an alarm before a problem occurs.

Wiring is cheap. Thermocouple extension wires are usually made of the same material as the equipment itself, so they are more expensive and fragile than standard twisted pair wires. Twisted pair is easier to "pull out", and the cost per foot is lower, which can save a lot of cost from the perspective of the long hospital.

Simplify maintenance. Twisted pair cables are easier to stand in harsh environments, so cable breaks and short circuits are less common, and if they do occur, they are easy to detect. "Smart" transmitters can send diagnostic information so that technicians can understand the problem before they start tracking wiring and finding faults.