User's Manual

HBM: Business Document

Important

Even if the unit is installed correctly, the zero point adjustment made at the

factory can shift by up to approx. 0.5% of the characteristic value. 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 special 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 13, "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 Installation orientation

The torque flange can be installed with any orientation.

With clockwise torque, when using the voltage output mode a positive output

signal (0 V…+10 V) or when using the frequency output mode an output

frequency of 10 kHz … 15 kHz is present on the output (corresponding zero to

nominal torque load).

5.4 Installation options

There are basically two options for mounting the special torque flange: with or

without dismantling the antenna ring. 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).