Answer / carl_ellis

To determine the density/specific gravity of the oil:

Weigh an empty, clean measuring cup. The larger the volume of the
measuring cup, the better the precision.

Fill the measuring cup with the oil to a marked level, say, 500mL.

Weigh the measuring cup and oil.

Subtract the weight of the measuring cup.

The ratio of the weight of the oil to the weight of an equivalent volume of
water (1 gram/mL) is the oil's specific gravity: weight oil/weight of water

Carl Ellis
Measure First

generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

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