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Raspberry Pi I/O Cards and Accessories for Home, Industrial and Building Automation

Connecting Raspberry Pi to the Real World

PT100 Sensor for
RTD Data Acquisition Card
for Raspberry Pi

$10.00

  • Resistance at 0°C: 100 ohms
  • -50°C to 450°C temperature range
  • ±0.5°C Accuracy
  • 3-wire terminals with prong ends
  • 2 meter wires
  • Ø4mm x 30mm steel probe

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PT100 sensor for RTD Data Acquisition Card for Raspberry Pi

Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes. PT100 thermocouple has a platinum sensor and a resistance of 100 ohms at 0°C. The sensor has a wide operating range (from -50°C to 450°C) low drift and with a maximum error of 0.5°C is suitable for precision applications.

Since the platinum detecting sensor is suitable to contamination from various elements, the sensor in encapsulated in a thermally conductive metallic shield.

The PT100 is the perfect add-on to the RTD Data Aquisition Stackable Card for Raspberry Pi. One RTD card can read temperatures from 8 different PT100 sensors. Since the card is stackable to 8 layers, one Raspberry Pi can acquire data from 64 temperature sensors.

The RTD card uses two ADS1248 24 bit, delta sigma analog to digital converters. The cards are calibrated to 0.1% from the factory, and can be further calibrated up to 0.01% using a precision, 100 ohms resistor. An internal, hardware watchdog monitors the Raspberry Pi and forces a hardware reset through power cycling in case of software lockup.

The PT100 sensor comes with three 2 meter, braided wires. Since the RTD card is compensating the wire resistance, the wires can be extended to very long ranges without any loss of accuracy.

Temperatures can be read and processed using the Command Line functions or the Python Driver. A browser interface can easily be deployed using Node-Red.

PT00 Sensor

Weight50 g
Dimensions10 × 10 × 1 cm

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