Sourcing Pressure Transducers from China for IoT & Industrial
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Pressure transducers from China split mainly into MEMS piezoresistive and capacitive types, each with different accuracy, drift, and cost trade-offs. Specs that decide fit are full-scale range, accuracy class measured against IEC 61298, and IP rating for the sensing port — IP67 is common for industrial and outdoor IoT. Both domestic and international manufacturers supply these, so verifying the actual sensing element matters as much as the housing.
When you source a pressure transducer the spec that bites is accuracy over temperature and long-term drift, not the headline accuracy at one point — a cheap MEMS part can read well at 25°C and wander badly across a process range. We check the IEC 61298 accuracy statement, the compensated temperature range, and the IP rating against the real mounting environment.
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FAQ
MEMS piezoresistive or capacitive — which should I source?
Piezoresistive MEMS is cheaper and handles wide ranges well, while capacitive tends to offer lower drift and better low-pressure accuracy. Choose based on your range, accuracy class, and media; for most IoT and industrial monitoring, piezoresistive is the cost-effective default.
How is transducer accuracy specified and verified?
Accuracy is stated against standards like IEC 61298, usually as a percentage of full scale including non-linearity, hysteresis, and repeatability. Ask for the calibration certificate and verify drift specs over the compensated temperature range, not just a single-point figure.
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