Measuring Procedure And Output Signal; Deployment Location Conditions; Ambient Temperature; Moisture And Corrosion Protection - Tecsis F1301 Betriebsanleitung

Betriebsanleitung/Operating manual
F1301/F13C1
4.2

Measuring procedure and output signal

The force acting in the measuring direction causes the measuring spring
to become elastically deformed and therefore also the welded-in thin-
film cell. This deformation generates a resistance change in the
individual bridge resistors. If the measuring bridge is now supplied with a
feed voltage, a measuring signal that is proportional to the force occurs
at the bridge output. This signal can either be output directly (c=2 mV/V)
or supplied as a standardised 4-20mA or 0-10V output signal with the
aid of integrated amplifiers.
5

Deployment location conditions

5.1

Ambient temperature

The temperature range of -20°C to +80°C that is specified in the data
sheet applies with regard to deployment. The specified error limits are
not guaranteed outside this temperature range.
Temperature gradients in the force transducer must be avoided if
possible. One-sided or local heating of the force transducer can cause
large measuring errors.
The temperature errors specified in the data sheet always relate to the
entire measuring device up to the plug or the end of the cable
(including the integrated amplifier).
5.2

Moisture and corrosion protection

Tropical climates and condensation are not a problem because the
transducers comply with protection class IP 67 in accordance with
EN 60529:1991+A1:2000 / IEC 529.
The entire measuring spring is made from stainless steel. The amplifier
casing with plug connection is made from aluminium. The design of the
accessory cable also complies with protection class IP 67.
5.3

Deposits

Dust, dirt and other object must not be allowed to form deposits in such
a way that they create a force short-circuit to the measuring spring,
which would falsify the measuring signal.
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