PT100 Sensor Technical information:
As for the thermocouple, we split the word: Pt and 100. Pt is the chemical symbol for Platinum, 100 is the resistance in Ohm of the Pt100 at 0 °C. The resistance changes (fearly linear) with temperature are: 0.385 Ohm/°C for European and 0.392 Ohm/°C for American elements. So, by measuring the resistance we can calculate the temperature. Never use a European Pt100 with an American instrument unless you know that it is set for the right conversion factor (usually called 'alpha'). In english a Pt100 is also called a RTD element, meaning Resistance Temperature Detector.
An RTD or Pt100 sensor is connected with two, three or four wires to the measuring device. we learned that we are in fact measuring resistance to determine the temperature. Now when measuring the resistance of the sensing element, we also measure the resistance of the leads and cables used. This gives an error! To compensate for this, the three wire type (bridge) is used, giving enough accuracy in most industrial applications. Even better accuracy is possible with a four wire Pt100 (laboratory applications). Our Pt100 panel mounted indicators have an offset compensation when using two wire sensors.
If you want high accuracy, for example better then 0.5°C between 0 and 100°C, go for the Pt100.
we have supply to Europe market more than 5000pcs per month ,all heaters use the best material ,and before sending each pcs all use fully test ,Quality assurance period 1year!
for delivery time :
quantity 50-100pcs 3days
for delivery sending ,we can use by DHL UPC TNT FEDEX for big order can sending by air ,to Europe the time just need 2 to 4days ,means form order to after get just need 5 to 7days for <500pcs orders.
for packing :all use Vacuum bag packagingVacuum bag packaging and cardboard boxesShockproof cotton
for marking:use the laser marking (Can be marked in accordance with customer requirements ,Only the name or Logo of the customer, refused to use the third party company name or Logo and model )