EN
14392029.02 08/2020 EN/DE
Operating instructions magnetostrictive level transmitter, models FLM-xAI, BLM-TAI (Ex)
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5.3 Adjustment
For variants with HART
®
protocol, the settings described in the following can also be made
conveniently remotely without having to open the probe head.
5.3.1 Measuring span on the level transmitter
For the adjustment of the 4 mA and 20 mA points on the level transmitter, there are two
buttons (
and
) and a light-emitting diode (LED) in the connection area of the probe
head.
Maximum measuring span (factory-set):
4 mA at the probe foot and 20 mA at the probe head
The measuring span can be set individually for adjustment to the respective vessel.
Minimum distance of 10 mm must not be breached! If this minimum distance is breached,
the display direction of the level transmitter reverses automatically (empty quantity
measurement).
Through the adjustment, the specification of the measured value can also be inverted, e.g.
the level transmitter can be set with a maximum measuring span with 4 mA at the probe
head and 20 mA at the probe foot.
1. Unscrew the probe head cover
using an open-ended spanner.
2. Hold down the 4 mA button
or 20 mA button
for a period of at least 3 seconds. The
green LED starts to blink.
Adjustment of the measuring span
5. Commissioning, operation
