hello,anyone. recently, i am working with the temperature sensor PT100. the temp range is 0-100 degrees celsius. and i want the output is 4-20mA. and i find that the XTR105 is a good selection for my project. i know how to calculate the value of the resistor. the datasheet has given me a lot of equation. but still i have some questions:
1: the word from the XTR105 datasheet "the XTR105 is available in DIP-14 and SO-14 surface-mount packages and is specified for the -40 degrees celsuis to +85 industrial temperature range", and i donnt understand the word clearly. and my understanding is that: the measure temperature range of PT100 is just -40 to + 85, but what i want to measure is 0-100, the desired temperature range(0-100) is beyond of the datasheeet temperature range(-45 to +85). i donnt know whether i am right.
2: From the datasheet, the IC output is 4-20 mA. that's to say, in the minimum temperature ,the output is 4mA, in the maximum temperature ,the output is 20 mA. but it doesn't
give the resolution. my mean is that: if the temperature is 50.1 degrees celsuis, what the XTR105 will output ?
i donnt konw whether you understand what i mean. looking forward to your reply.
thanks.
1: the word from the XTR105 datasheet "the XTR105 is available in DIP-14 and SO-14 surface-mount packages and is specified for the -40 degrees celsuis to +85 industrial temperature range", and i donnt understand the word clearly. and my understanding is that: the measure temperature range of PT100 is just -40 to + 85, but what i want to measure is 0-100, the desired temperature range(0-100) is beyond of the datasheeet temperature range(-45 to +85). i donnt know whether i am right.
2: From the datasheet, the IC output is 4-20 mA. that's to say, in the minimum temperature ,the output is 4mA, in the maximum temperature ,the output is 20 mA. but it doesn't
give the resolution. my mean is that: if the temperature is 50.1 degrees celsuis, what the XTR105 will output ?
i donnt konw whether you understand what i mean. looking forward to your reply.
thanks.