Scope Of Supply; Application - HBM TTS Mounting Instructions

TTS
1

Scope of supply

• Transfer torque wrench (measuring head, lever, connecting elements) in
aluminum case
• Square adapter with external square shaft for test object (square size see
specifications for the respective nominal (rated) torque)
• DKD-R 3-7 calibration certificate
• Connecting cable, with Lemo
connector on amplifier side, length 3 m
2

Application

The transfer torque wrench is used as a transfer standard for calibrating
torque wrench calibrating devices.
Generally, when a torque wrench calibrating device is used, torque is gener-
ated by exerting force on the lever of the torque wrench to be calibrated (e.g.
the triggering torque wrench to be used in the workshop). When calibrating
the torque wrench calibrating device, on the other hand, a transfer torque
wrench (the indicating torque wrench) is inserted into the calibrating device
instead of a torque wrench in need of calibration. The torque is generated in
the same way as for normal use, so that the measurement conditions for the
calibrating device are identical. This is of particular importance with respect to
the parasitic loads acting at the same time as the actual calibration torque,
namely lateral force and bending moment.
The design of the TTS transfer torque wrench is adapted to German Calibra-
tion Service guideline DKD-R 3-8
wrench calibrating devices.
To conform to the strict requirements regarding the traceability of a transfer
standard, a transfer torque wrench must be calibrated in an accredited cal-
ibration laboratory (in Germany, this is a DKD laboratory). This is why each
TTS from HBM is delivered with a DKD calibration certificate in accordance
with guideline DKD-R 3-7
1)
Guideline DKD-R 3-8 "Statische Kalibrierung von Kalibriereinrichtungen für Drehmomentschraubwerk-
zeuge" (Static calibration of calibrating devices for torque tightening tools), published by the German Cal-
ibration Service.
2)
Guideline DKD-R 3-7 "Statische Kalibrierung von anzeigenden Drehmomentschlüsseln" (Static calibration
of indicating torque wrenches), published by the German Calibration Service.
A1571-1.2 de/en

connector on transducer side, 15-pin Sub D
1)
, which regulates the calibration of torque
2)
.
25
HBM