Practical Instrument Electronics 850 - Manual (Page 32)

Page 30
Pr
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Read RTD Sensors
Choose this function to measure temperatures with an RTD
probe, sensor or any device that output an RTD signal.
Move the power switch w to READ then Double Click the
EZ-DIAL knob to get into the Double Click Menu. Turn the knob
to scroll through the settings and press the knob to make your
selection. Select RTD for the FUNCTION, °F or °C for the UNITS
and RTD (Choose from one of Platinum 100Ω, or 1000Ω, Copper
10Ω or 50Ω, Nickel 120Ω or 110Ω curves). Note: Pt 100Ω 3850
is the most common RTD type. You must also select the WIRE
MODE for 2W, 3W or 4W to match the 2, 3 or 4 wires on the RTD
sensor.
Disconnect all wires from the sensor and connect the PIE
820-ELITE to the inputs of the device using 2, 3 or 4 wires.
Signals above the maximum scale are limited by protection
circuitry with “OVER RANGE” flashed on the display and the red
OVERLOAD LED lit.
The PIE 850 measures the input signal and constantly updates
the display with the current reading. Move the EZ-CHECK switch
q to MAX to see the highest reading and to MIN to see the
lowest reading. Press and hold the knob e to clear the MAX and
MIN readings.
83.0
°C
2 1 + - 3 RTD -
Pt 100
α
=3850