Dräger Polytron 8000 Serie Instrucciones De Uso página 15

6.2 Commissioning the gas detector
1. To prevent false alarms, turn off the alarm activation for
the gas detector (see "Turning the alarms on and off",
page 30).
2. Switch on the power supply.
 The device performs a start-up sequence (LCD/LED
test, software version, and initialization).
 The display indicates that the sensor will be ready for
measurement in hh:mm:ss (countdown). The device
transmits the maintenance signal. The fault relay is
activated.
 The sensor warms up. The maintenance signal on the
4 to 20 mA interface remains until the sensor has
warmed up. The length of the warm-up time depends
on the type of sensor and the ambient conditions.
Maximum warm-up time of a new sensor: See the
instructions for use of the sensor.
3. Check the date and time. Settings can be changed during
the sensor's warm-up time.
 After the sensor's warm-up time, the device switches
to normal operation. The display shows the current gas
concentration, the unit of measurement, and the
selected gas if applicable. The green LED is lit.
If the device is operated with a Dräger SensorAlive,
Dräger recommends setting the correct date and time.
The sensor's warm-up time is followed by the start-up
period of the Dräger SensorAlive. The sensor is ready for
measurement during this phase, but the self diagnostics
do not yet take place.
4. Adjust the device as necessary.
5. Turn on the alarm activation for the gas detector (see
"Turning the alarms on and off", page 30).
7 Operation
7.1 Control panel
The control panel contains
– buttons for navigating in the menu
– a display
– LEDs and associated symbols
The buttons for navigation have different functions depending
on the menu that is in use.
The instrument is operated with a magnetic wand. To do so,
the enclosure lid must be in place on the instrument. If the
enclosure lid is not in place, the magnetic wand may activate
two or more buttons at once (cross-talk).
Instructions for use |
Dräger Polytron
®
8000 Series
7.2 LEDs and symbols
The following symbols and LEDs can be found on the control
panel:
Symbol LED
Red
Yellow
Green
LED status
– If alarm A1 (pre-alarm) has been triggered, the red LED
will flash once
– If alarm A2 (main alarm) has been triggered, the red LED
will flash twice
– If an alarm is acknowledged before the reason for the
alarm has been rectified, the red LED will light
continuously to indicate that there is a fault.
7.3 Readings on the display
7.3.1 All devices
Symbol Explanation
An error message is present.
Additional information is available in the
Information menu.
A warning message is present.
Additional information is available in the
Information menu.
Maintenance signal is transmitted.
The set full scale deflection is exceeded at
the 4-20 mA interface.
The set threshold limit value is not met at
the 4-20 mA interface.
®
HART operation is active. Analog inter-
face is set to a fixed value and is not trans-
mitting any measurement signal.
Once the capacity of the data logger is
reached, the old data are overwritten by
new values ("roll" function).
Once the capacity of the data logger is
reached, no more data can be stored
("stack" function).
SIL SIL operation mode is activated.
Operation
Description
Alarm Triggered
Fault
Power on
.
.
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