9
TRANSDUCER SPECIFICATIONS
MAXIMUM TORQUE CAPACITY
See full scale values below
OUTPUT VOLTAGE (Vo)
2 Millivolts per volt at maximum torque capacity
BRIDGE RESISTANCE (Rbr)
700 ohms (nominal) can be used with 350 and 700 ohm strain gage equipment*
TRANSDUCER CABLE
Cannon No. KPTO6AJ149P (mates with Cannon No. KPTO6AJ149S or equivalent)
CALIBRATION INSTRUCTIONS
CALIBRATION VALUES
GEAR TRAINS FULL SCALE VALUE
& ANGLE HEAD
FT. LBS.
Nm
104P
167.1
226.6
204P
178.3
241.8
304P
189.5
256.9
10M & K
40.0
54.2
20M & K
42.9
58.1
30M & K
45.5
61.7
In order to calculate the calibration value for the system in % full scale, the following formula may be used:
% FS = Rbr
1
1
------------------ X ----- X -----
2(Rcal) + Rbr Vo
2
Where Rcal = Calibration Resistor Value in ohms of the torque monitor used.
The following is an example of a 40 series right angle tool with a 10M gear train, angle head and a torque monitor with a
110,000 ohm calibration resistor.
The values are: FS = 40.0 ft. lbs.
Rbr = 700ohm
Vo = .002
Rcal = 110,000ohm
700ohm
1
1
% FS = --------------------------- X ------ X ----- = 79.3%
2(110,000ohm) + 700ohm .002
2
Calibration Value = 40.0 (.793) = 31.7 ft. lbs.
*Calculated calibration value should be doubled if a torque monitor designed for use with a 350ohm bridge resistance
transducer is used.
A
A
B
B
C
C
D
D
BLACK
GREEN
RED
WHITE
TOOL RECEPTACLE
CABLE CONNECTORS
R
WIRING DIAGRAM
E
E
F
F
(+) SIGNAL
(-) SIGNAL
SHIELD
(+) EXCITATION
(-) EXCITATION
Ro/2
Rm/2
R
R
R
t
C
t
C
Ro/2
Rm/2
Rcal
R= Gage Resistance
Rm= Modulus Resistor
Ro= Output Scaling Resistor
Rm & Ro may be omitted
Rcal= Shunt Calibration Resistor
NOTE: CALIBRATION VALUES MAY BE ADJUSTED TO
COMPENSATE FOR LOSSES THROUGH GEAR TRAINS
AND ANGLE HEADS.
