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_____________________________________________________________________________________________________________________ 
Absolute Measurement Ltd. (T/A CMC Controls) 
t: (0) 1732 763278 

| e

[email protected]

 | w: absolutemeasurement.co.uk

 

Unit 19 

| Silver Birches Business Park | Aston Road | Bromsgrove | B60 3EU 

 

 

 

3

 

Transducer Instruction Manual 

Range:   

Ultra 

Type: 

 

CLT 

Revision:   

V1.0 

 

2.2 

Installation Precautions 

 
To  ensure  proper  installation  and  operation  of  the  tension  system,  the  following  steps  should  be 
performed in sequence - always install, orientate and firmly bolt down the transducer 

BEFORE

 installing 

the tension sensing roller. 
 

Welding

.  Unplug  the  cable  connector  from  the  transducer  before  any  electric  welding  is  undertaken  on 

the machine. 
 

Transport.

 It is recommended that the tension sensing roller is removed from the transducer before the 

machine is transported to prevent excessive shock being transmitted through to the transducer. 
 
Failure to carry out these precautions could seriously damage the transducer and invalidate the warranty. 

2.3 

Mounting Surface Preparation 

 
The mounting surface for the transducer should be rigid, flat and clean. Prepare the machine frame or 
mounting surface by removing any loose paint, rust, scale, burrs etc. 

2.4 

CLT-SCM Installation 

 

 

 

 

 

 

 

Rotate the transducer so that the tension resultant force is in line with the 

"LOAD LINE"

 label as shown 

alongside, then 

SECURELY

 tighten the mounting bolt. The cable connector should bisect the web wrap 

angle. 
 
The  mounting  bolt  must  not  bottom  in  the  transducer,  the  depth  of  the  mounting  hole  in  the  CLT-SCM 
transducer  is  14mm.  Check  that  there  is  clearance  between  the  mounting  bolt  and  the  bottom  of  the 
transducer  mounting  hole.  Fixings  are  available  from  CMC Controls  if  they  have  not  been  supplied  with 
the order, request Part Number 0594 or 0595. 

Summary of Contents for CLT

Page 1: ...Transducer Instruction Manual Range Ultra Type CLT Revision V1 0 ...

Page 2: ...f Transducer Mounting Location 2 2 2 Installation Precautions 3 2 3 Mounting Surface Preparation 3 2 4 CLT SCM Installation 3 2 5 CLT FLCM Installation 4 2 6 CLT PBCM Installation 4 2 7 CLT BRCM Installation 4 2 8 Sensing Roller Installation 5 2 9 Temperature Compensation and Shaft Expansion 6 2 10 Hazardous Area Installation Intrinsic Safety 6 2 11 Single Transducer Operation 6 3 Transducer Force...

Page 3: ...ch convert this force into an electrical signal This signal is a combination of tension force and sensing roller dead weight The dead weight of the roller is zeroed out electrically in the indicator or controller leaving the tension force signal only to be amplified to give a true display of measured tension 2 Installation 2 1 Selection of Transducer Mounting Location The transducer must be mounte...

Page 4: ...moved from the transducer before the machine is transported to prevent excessive shock being transmitted through to the transducer Failure to carry out these precautions could seriously damage the transducer and invalidate the warranty 2 3 Mounting Surface Preparation The mounting surface for the transducer should be rigid flat and clean Prepare the machine frame or mounting surface by removing an...

Page 5: ... The cable connector should bisect the web wrap angle Secure the transducer firmly to the machine frame with four mounting bolts 2 6 CLT PBCM Installation Mount the transducer and fix firmly to the machine frame with two fixing bolts Loosen but do not remove the four socket head screws retaining the lockplate on to the rear of the transducer Rotate the transducer body so that the tension resultant...

Page 6: ... a choice of adaptors with bores of 17 20 25 30 and 35mm diameter to accept a shaft to which a tension sensing roller or guide pulley can be mounted as shown below Two set screws at 90 degrees are used to hold the shaft in place The tension sensing roller or guide pulley should be dynamically balanced when the roller speed exceeds 300 RPM as excessive vibration can damage the transducer Any out of...

Page 7: ... are passive components and are classified as simple apparatus by EN 50014 Strain gauge transducers load cells will be damaged if subjected to the 500 volt insulation test required by EN 50020 To comply with Intrinsic Safety regulations the body of the transducer must be bonded to the IS earth using 4 square millimetre green yellow insulated cable Consult CMC Controls for more information NOTE It ...

Page 8: ...s or tension snatches may cause permanent damage The ultimate overload capability before breakage is 300 bearing damage may occur before this 4 1 High Output Signal With No Tension 1 Check for correct wiring to the transducer 2 Check cables and connectors for good continuity with an ohm meter do NOT use a megger 3 The transducer may have too low a MWF replace with a higher MWF transducer or reduce...

Page 9: ...ducer mounting 2 Check that the shaft clamp and transducer mounting bolts are secure 4 5 Transducer Strain Gauge Resistance The transducer has semiconductor strain gauges in a full bridge configuration The gauge resistances measured at room temperature with no load are shown in the table below Measurements taken between the following wires Corresponding M12 Connector Pins Target Resistance Alumini...

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