So the encoder must have 1000 PPR, whichever way we calculate it. If we like,
we could also use a 500 PPR encoder with a 2× logic multiplier.
2. To measure 10 inches of travel to 0.01 inch resolution: Total count = 1000;
Resolution = 0.01 inch. If the encoder makes one full turn over the total travel, a
1000 PPR encoder can satisfy this requirement. At full travel, the encoder and
counter will read 9.99, which is within the stated tolerance of 0.01 inch.
Measuring Length with Wheels and Rolls
An encoder can also measure linear distance using a measuring wheel or roll. The
table below gives the calibration constant, K, that must be set on the counter or tach
readout in order to give the display resolution desired.
So the encoder must have 1000 PPR, whichever way we calculate it. If we like,we could also use a 500 PPR encoder with a 2× logic multiplier.2. To measure 10 inches of travel to 0.01 inch resolution: Total count = 1000;Resolution = 0.01 inch. If the encoder makes one full turn over the total travel, a1000 PPR encoder can satisfy this requirement. At full travel, the encoder andcounter will read 9.99, which is within the stated tolerance of 0.01 inch.Measuring Length with Wheels and RollsAn encoder can also measure linear distance using a measuring wheel or roll. Thetable below gives the calibration constant, K, that must be set on the counter or tachreadout in order to give the display resolution desired.
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So the encoder must have 1000 PPR, whichever way we calculate it. If we like,
we could also use a 500 PPR encoder with a 2× logic multiplier.
2. To measure 10 inches of travel to 0.01 inch resolution: Total count = 1000;
Resolution = 0.01 inch. If the encoder makes one full turn over the total travel, a
1000 PPR encoder can satisfy this requirement. At full travel, the encoder and
counter will read 9.99, which is within the stated tolerance of 0.01 inch.
Measuring Length with Wheels and Rolls
An encoder can also measure linear distance using a measuring wheel or roll. The
table below gives the calibration constant, K, that must be set on the counter or tach
readout in order to give the display resolution desired.
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