Transducer Specifications; Calibration Instructions - Cleco 55NJLT Operation & Service Manual

MAXIMUM TORQUE CAPACITY
OUTPUT VOLTAGE (Vo)
BRIDGE RESISTANCE (Rbr)
TRANSDUCER CABLE
R= Gage Resistance
Rm= Modulus Resistor
Ro= Output Scaling Resistor
Rm & Ro may be omitted
Rcal= Shunt Calibration Resistor
ANGLE HEAD SIZE
M
P
T
In order to calculate the calibration value for the system in % full scale, the following formula may be used:
% FS = Rbr
------------------ X ----- X -----
2(Rcal) + Rbr
Where Rcal = Calibration Resistor Value in ohms of the torque monitor used.
The following is an example of a 55 series right angle tool, a "P" head and a torque monitor with a 110,000ohm calibration
resistor.
The values are: FS
Rbr = 700ohm
Vo
Rcal = 110,000ohm
700ohm
% FS = --------------------------- X ------ X -----
2(110,000ohm) + 700ohm
Calibration Value = 99.3 (.793) = 78.7 ft. lbs.
*Calculated calibration value should be doubled if a torque monitor designed for use with a 350ohm bridge resistance
transducer is used.
6

TRANSDUCER SPECIFICATIONS

See full scale values below
2 Millivolts per volt at maximum torque capacity
700 ohms (nominal) can be used with 350 and 700 ohm strain gage equipment*
Cannon No. PTO1A0P (mates with Cannon No. PTO1A0S or equivalent)
Rm/2 Ro/2
R
R
t C
t
C
R R
Rm/2

CALIBRATION INSTRUCTIONS

FULL SCALE VALUE (FS)
FT. LBS. Nm
95.7 129.8
99.3 134.6
118.5 160.7
1 1
Vo 2
= 99.3 ft. lbs.
= .002
1 1
.002 2
WIRING DIAGRAM
A A
WHITE
B B
BLACK
C C
GREEN
D D
RED
E E
Ro/2
F F
= 79.3%
TOOL RECEPTACLE
CABLE CONNECTORS
(+) EXCITATION
(-) EXCITATION
(+) SIGNAL
(-) SIGNAL
SHIELD
Rcal