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1. Introduction
R718CK2 (nickel-chromium-nickel silicon thermocouple): its use temperature is -40 ~ +375
℃
, with good linearity, large
thermoelectromotive force, high sensitivity, stability, can not be used directly at high temperature for sulfur, reducing or reducing
It is not recommended for use in weak oxidizing atmospheres in oxidizing alternating atmospheres and in vacuum.
R718CT2 (copper-copper-nickel thermocouple): its use temperature is -40 ~ +125
℃
, it is used in the temperature range of
-40
~0℃
, and the stability is better.
R718CR2 (precious metal thermocouple): Its temperature is 0 ~ +1100
℃
. The R type thermocouple has the highest accuracy, the
best stability, wide temperature range and long service life in the thermocouple series. It has good physical and chemical
properties, good thermoelectric potential stability and high oxidation resistance at high temperatures, and is suitable for oxidizing
and inert atmospheres.
LoRa Wireless Technology:
LoRa is a wireless communication technology dedicated to long distance and low power consumption. Compared with other
communication methods, LoRa spread spectrum modulation method greatly increases to expand the communication distance.
Widely used in long-distance, low-data wireless communications. For example, automatic meter reading, building automation
equipment, wireless security systems, industrial monitoring. Main features include small size, low power consumption,
transmission distance, anti-interference ability and so on.
LoRaWAN:
LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and
gateways from different manufacturers.
