AI-Tek Instruments TACHTROL 3 User Manual

FPR = Diameter x π = 36 x 3.1416 = l l3.0973 in. Converted to Feet = 9.425 where FPR = feet
per revolution
C5 = 9.425
C12 = X 6
4. Have the Analog Output Drive an Auxiliary 0-20mA meter with a range of 600 to lOOOrpm.
20mA
0mA
0 600 rpm 1000 rpm
C6 = 600
C7 = 1000
C12 = 1 X 6
5. Go to an Alarm Condition when the speed drops below 600rpm and automatically come out of
Alarm when it returns to 660rpm (Underspeed Failsafe)
6. Go to an Alarm condition when the speed rises above lOOOrpm and automatically come out of
Alarm when it returns to 950rpm (Overspeed Failsafe)
C8 = 600
C
9 = 1000
C
10 = X 0 5 1 0
C12 = 1 X 0 1 6
autoranging to two decimals, right only
underspeed failsafe
overspeed failsafe
analog output is 0 - 20 mA
Dual Channel Operation
Suppose you are using the tachometer as an elongation monitor in a paper mill. Elongation is the
change in length of the paper at the outgoing roller. The diameter of the roller plus twice the thick-
ness of the belt at each end of the process is 36 inches. The sensors are reading from 48 tooth gears.
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AI-Tek Instruments TACHTROL 3 Specifications

General

Brand	AI-Tek Instruments
Model	TACHTROL 3
Category	Measuring Instruments
Language	English