Pressure Transmitters 050D series
Operating Instructions
- English - V1.0
PN-TI118-EN-14-1/8
Hengesbach GmbH & Co. KG
·
Schimmelbuschstr. 17
·
40699 Erkrath
·
Tel. +49 (0) 21 04 / 30 32-0
·
Fax +49 (0) 21 04 / 30 32-22
·
www.hengesbach.com
4.3
Restoring factory settings
Resetting the factory settings returns the device to its delivery state. Hold the
and
key depressed simultaneously. Whilst continuing
to hold the keys depressed, the status LED extinguishes and then after c. 5 s will alternate between green and red. This signals that the
reset of the factory settings gas been successful. You can release the keys - the transmitter will continue with the factory settings.
Hold the
and
keys
depressed
Status LED
extinguishes
Initialisation
phase (5s)
Status LED flashes
green and red
Release the
and
keys
4.4
Reading the status LED in measuring mode
The status LED in the device head interior provides information as to which operating area the process (and thus the device) currently finds
itself. In addition to the analogue output current, it issues optical feedback regarding current operation. The following flash patterns and
their significance are explained here:
Status LED illuminates green
The current process pressure is located within the operating thresholds set
for the transmitter. The output current is proportional to the measuring
value. The transmitter is in its optimum transducer mode.
Status LED flashes green
The current process pressure is located outside the operating thresholds
set for the transmitter. The transmitter has left its optimum working area.
The output current still follows the measurement signal in a linear fashion.
Status LED flashes red
The process pressure has exceeded or is below the set measuring threshold
so that the output current is already restricted. The current is either 3.8mA
or 21mA, depending on whether the pressure has been exceeded or
undercut.
Status LED illuminates red
Device malfunction or damage. The process pressure can no longer be
measured or could be faulty. The output current is held at 22mA in order to
signal the transmitter outage.
The transmitter allows a shortfall of -1.25% (3.8mA) of the measuring range set and excess of +6.25% (21mA). The
output signal is linear to the process pressure within these thresholds. Outside these thresholds, the transmitter
begins current limitation.
