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vGauge Remote Sensor Units support several types of resistive pressure senders in different ranges
Senders vary resistance with changes in pressure usually with resistance increasing as pressure rises. A pull up circuit supplies the bias voltage via a single wire with the ground return path via sender body to system ground. In some cases, a separate ground terminal can be ordered for isolated ground systems
The main difference between senders is pressure range with operational ranges from 30 PSI to 400 PSI the most common. These versatile senders are used for Engine OIL, FUEL, Transmission OIL, Water Pumps, and more.
Resistive senders are effected by long wire runs which can increase the overall load. With min pressure resistance in the 10-14 Ohm range, the effect of lead resistance can become noticeable. These effects can be easily compensated via adjustments in calibration tables. Another effect of resistive senders is no-linear response curves which can cause very quick changes at end of operating ranges. Calibration tables can help reduce some of these effects.
Some common senders available are listed with associated calibration tables.
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