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Operation
When operating in accordance with BVS 13 ATEX G 001 X
and PFG 14 G 001 X, consideration must be given to the
following special conditions:
– Polytron 8200 CAT:
– When streaming the DQ or LC sensor with air
containing measured gas, measured values may
increase by up to 32 %.
These values may increase by up to 70 % when
operating with the DQ remote calibration adapter.
– The transmitter with LC sensor must be operated in
combination with a control unit that indicates over
range with a latching signal. Internal transmitter alarm
relays are not permitted.
– The transmitter with LC sensor must be adjusted with
its sensor in the standard operating position.
– False alarms may be triggered during the warm up
period of the LC sensor.
– Polytron 8100 EC:
Minor changes to the concentration may see the setting
time t20 of the transmitter with EC sensor exceed the EN
50104 threshold.
6.2
Commissioning the gas detector
1. To prevent false alarms, turn off the alarm activation for
the gas detector (see "Switching the alarms on or off",
page 32).
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
"Switching the alarms on or off", page 32).
16
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).
7.2
LEDs and symbols
The control panel contains the following symbols and LEDs:
Symbol
LED status
– When the A1 alarm (pre-alarm) has been triggered the red
LED flashes in single mode
– When the A2 alarm (main alarm) has been triggered the
red LED flashes in double mode
– If an alarm has been acknowledged before the cause was
rectified, the red LED is permanently lit to indicate that a
fault exists.
7.3
Readings on the display
7.3.1 All devices
Symbol
Instructions for use
|
Dräger Polytron
LED
Description
Red
Alarm Triggered
Yellow
Fault
Green
Power on
.
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.
®
8000 Series SW version ≥ 4.0.x
.
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