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Sensor/Heater Evaluation Board |
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Summary of Specification
- 12Vdc, 60W power requirements
- 3 x 3 inch board dimension
- -200C to +200C Monitored sensor range
- 0.05C sensor resolution
- 2 wire or 4 wire RTD sensor connection
- 45W heater (30V @ 2A max)
- SPI communication interface
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| Description |
The sensor board provides the ability to evaluate an RTD sensor.
Easy connections facilitates the evaluation of a 2 wire or 4 wire RTD sensor.
Contact Us for pricing and any custom hardware or software requirements.
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Sensor
- PT100 RTD, -200°C to +200°C, firmware corrections for Alpha = 0.00385 100 ohm RTDs.
- Accuracy (Thermometry): ±0.1°C
- Resolution: ±0.05°C or better
- Sampling rate: 10 per second
- Both analog and digital filtering of the RTD/converted values
- The RTD will be interfaced via a 4 wire connection (allowing use of 2 or 4 wire RTDs)
- Power from 12V battery (operating voltage 10 to 13.8 VDC)
- 3 square inches board dimension
- SPI output protocol/coding
- Wiring distance 1 to 6 feet
- Host microcontroller preferred: PIC24FJ256GB110 SPI interface Mode 0,0 or Mode 1,1
- Method of calibrating the sensor on board and through SPI interface by the host.
Heater
- Heating Element: 30V at 2A initial, typ: 45W
- uP controlled PWM, DC/DC converter to convert 12V to variable 0-30V in steps of 1V
- Heater voltage to be controlled via commands from the host microcontroller
- Heater nominal resistance at room temp: 19-20 ohms
- Maximum heater (full ON) voltage: approx 30 VDC
- Fuse (on circuit board) 3 amps
- Terminal blocks or suitable rugged connectors on PCB for connecting RTD and Heater Power
- 100 mil berg male header connector to directly connect to the host microcontroller board
- 12V battery power will be supplied by the host board through the mating header.
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