Cleco 55NLTVC Series, Operation & Service Manual

7

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 ohm  (nominal) can be used with 350 and 700 ohm strain gage equipment*

TRANSDUCER CABLE

Cannon No. PTO1A0P (mates with Cannon No. PTO1A0S or equivalent)

CALIBRATION INSTRUCTIONS

    ANGLE HEAD SIZE          FULL SCALE VALUE (FS)

               FT. LBS.              Nm

M

  95.7

           129.8

P

  99.3

           134.6

T

118.5

           160.7

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 55 series right angle tool, a "P" head and a torque monitor with a 110,000 ohm calibration
resistor.

The values are:    FS    = 99.3 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 = 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.

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