Bühler technologies EMIDos Guía Rápida página 18

EMIDos
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
Check the entire gas system for leaks before switching on.
Dosing pump:
The dosing pump does not have a separate switch and starts
immediately when the supply voltage is switched on.
The device has a constant flow rate of 13 ml/h. Due to the low
flow rate a feed time, which varies by dosing line length (the
path from the acid container to the heat exchanger), is re-
quired. Die feed time is 5 min/m.
Capacitive sensor:
The operating voltage of the capacitive sensor is 10 to 36 V.
The capacitive sensor is controlled with two buttons. The
sensor must be calibrated on first use. Proceed as follows:
18 Bühler Technologies GmbH
Now feed the sensor
through the sensor
bracket (package 7).
When doing so, position
the first nut on the
smooth end of the sensor
bracket (without groove).
Now attach the second
nut to the sensor end
with the groove and in-
sert it in the groove (see
figure).
Now position the sensor
bracket with sensor on
the designated four set
screws on the container
bracket and secure. Use
the installation materials
from package 7.
If necessary, adjust the
height of the sensor by
loosening the external
hex nut. The sensor
depth can be adjusted by
screwing the sensor in or
out. Tighten the external
hex nut to secure the se-
lected position. Please
note the necessary empty
calibration of the sensor
in chapter "Operation
and control".
Empty calibration (always required)
Medium
Fig. 1: Schematics of the liquid level for empty calibration
The liquid level must be below the sensor for calibration.
Press the switch on the capacitive sensor as follows:
Hold the desired button for 2 to 6 seconds.
The LED will flash slowly whilst holding
the button. Once released, the LED will ex-
tinguish.
NO = normally open contact/NC = nor-
mally closed contact (when liquid level
drops)
The device hides the installation environment and restarts.
Prior calibrations will be erased.
6 Maintenance
Always observe the applicable safety- and operating regula-
tions when performing any type of maintenance. Please refer
to the original operator's manual on the included CD or online
at www.buehler-technologies.com for maintenance informa-
tion.
7 Service and Repair
Please refer to the original operator's manual on the included
CD or online at www.buehler-technologies.com for a detailed
description of the unit including information on
troubleshooting and repair.
BX450031 ◦ 08/2020