HQ New tool for Waterproof PT100 Platinum Resister Temperature Sensor

Detail HQ New tool for Waterproof PT100 Platinum Resister Temperature Sensor

hai kak. Mohon maaf untuk minimal order 20 ribu ya kak baru bisa kita proses, diluar ongkirSTOCK = 6 pcs

100% brand new and high quality
Color: As the picture shows
Instruction:(See last picture)
R2, R3 and R4 and Pt100 sensor measuring bridge, in order to guarantee the
stability of the bridge output voltage signal input voltage of bridge by TL431
to 2.5 V. Differential signal was obtained from the bridge after two stage
operational amplifier input microcontroller. A bridge bridge arm with adjustable
resistor R3, by adjusting the R3 can adjust the difference voltage signal input
to the op-amp, is often used to adjust the zero point. Amplifying circuit adopts
the integrated operational amplifier LM358, in order to prevent the single-stage
the nonlinear error of too much magnification, amplifying circuit using two
stage amplifier, as shown in figure 5.1, former level is about 10 times, after
the level is about 3 times. Changes in 0 ~ 100 degrees temperature, when the
temperature rises, Pt100 resistance, input amplifier circuit of differential
signals, amplifying circuit of Av output voltage corresponding to rise. Note:
although the bridge section have been TL431 regulated, but the whole module
voltage VCC must be stable, or as the VCC fluctuations, operational amplifier
LM358 working voltage fluctuation, Av output voltage fluctuations, then finally
lead to the result of the A/D conversion, the measured results jump up and down
Temperature rang: -20 ~ 500
Allowable deviation: (2.5)
Sensor Dia: 4 X 30
Cable Length: 0.5m
External Shielding: Insulated Shielding
Internal Insulation: Fiberglass
Quantity: 1 Pc

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