User's Manual

12
Important
Even if the unit is installed correctly, the zero point adjustment made at the factory can shift
by up to approx. 2% of the sensitivity. If this value is exceeded, we advise you to check the
mounting conditions. If the residual zero offset when the unit is removed is greater than 1%
of the sensitivity, please send the transducer back to the Darmstadt factory for testing.
5.2
Conditions
on
site
The torque flange must be protected against coarse dirt particles, dust, oil, solvents and
humidity.
There is wide ranging compensation for the effects of temperature on the output and zero
signals of the transducer (see Chapter "Specifications"). If there are no static temperature
ratios, for example, because of the temperature differences between the measuring body
and the flange, the values given in the specifications can be exceeded. In this case, ensure
static temperature ratios by cooling or heating, depending on the application. As an
alternative, check if thermal decoupling is possible, e.g. by means of heat radiating
elements such as multiple disc couplings.
5.3
Mounting position
The torque flange can be mounted in any position.
With clockwise torque, the output frequency is, depending on the option, 60 - 90 kHz, 10 -
15 kHz or 240 - 360 kHz). With HBM amplifiers or with the voltage output option, a positive
output signal (0 V -+10 V) is present. In the case of the speed measuring system, an arrow
must be attached to the stator housing to clearly define the direction of rotation: If the
measurement flange moves in the direction of the arrow, connected HBM measuring
amplifiers deliver a positive output signal.
5.4
Installation options
In principle, there are two possibilities for torque flange mounting: with the antenna ring
complete or dismantled. We recommend mounting as described in Chapter 5.4.1. If
mounting in accordance with Chapter 5.4.1 is not possible, (e.g. in the case of subsequent
stator replacement), you will have to dismantle the antenna ring. It is essential in this case
to comply with the notes on
assembling the antenna segments (see Chapter 5.4.2).
Version b 13.01.2015 HBM: public