Commissioning Of The Instrument; Operation; Display, Analog Interface And Relay Status; Measuring Mode - Dräger Polytron 87x0 IR Serie Gebrauchsanweisung

Remote versions for explosion proof instrument (Ex d)
Transmitter
®
Polytron 8100 EC
®
Polytron 8200 CAT
®
Polytron 8310 IR
®
Polytron 87x0 IR
Remote versions for increased safety instruments (Ex e)
Transmitter
®
Polytron 8100 EC
®
Polytron 8200 CAT
®
Polytron 8310 IR
®
Polytron 87x0 IR
7

Commissioning of the instrument

1. Switch power supply on.
 The display shows that the sensor will be ready for
measurement in hh:mm:ss (countdown) and the
instrument transmits the maintenance signal.
 The fault relay is activated.
 The instrument will go through a start-up sequence
(LCD / LED test, software version, and initialization)
and start the warm-up period.
The maintenance signal on the 4-20mA interface
remains pending until the sensor is warmed-up.
Maximum warm-up time of a new sensor: see the
Instructions for Use for the sensor. For Oxygen: EN
50104 approvals.
 After the warm-up period, the instrument goes into
normal operation. The display shows the current gas
concentration, the selected gas and the units of
measurement. The green LED is lit.
2. Check date and time.
Settings can be made during the warm-up period. The
warm-up period depends on the sensor and environment
conditions.
3. If necessary, calibrate the instrument.
Obey the safety statements mentioned in 1.3 Mechanical
installation!
8

Operation

8.1 Display, analog interface and relay
status
The following display examples show Polytron
®
For Polytron 8200 CAT and Polytron
are not predefined. Gas names must be entered via
DrägerPolysoft PC software.
Instructions for use |
Dräger Polytron
Sensing head IFU part
numbers
EC sensing head with cable
(9033247)
Junction Box stainless steel
or aluminum (4544286)
Sensing head IFU part
numbers
EC sensing head with cable
(9033247)
Polytron SE Ex sensing
heads (9033888)
PIR 7x00 (9023885)
®
8100 EC.
®
8310 IR gas names
®
8000 Series
Commissioning of the instrument

8.1.1 Measuring mode

Display example Description
In normal operation, the display
20.9
shows the measured gas concentra-
tion, the selected gas and the unit of
measurement.
O 2 Vol.%
Exceeding the alarm thresholds.
19.0
Example shows pre alarm A1.
O 2 A1

8.1.2 Special states

If the instrument is in a special state, a proper measurement
or alarming can no longer be guaranteed.
This is the case:
– When the gas concentration exceeds the measuring
range.
– When a fault occurs.
– When alarms are deactivated.
The measuring function (display output and analog/digital
interface) remains active.
– During calibrations.
– During bump tests.
– During warm-up phase.
– During maintenance.
For the current of the analog interface corresponding to the
analog signal, see 17.2.
For signals of digital interfaces, refer to the corresponding
technical manual.
Display example Description
Value is over measuring range
The gas concentration is beyond the
measuring range of the sensor.
Analog interface: Measuring range
O 2
A2 exceeded
Relays: A2 relay switches
Value is under measuring range
The gas concentration is beyond the
measuring range of the sensor.
Analog interface: Drift below zero
O 2 Vol.%
Relays: Fault relay switches
Fault indication
The
side of the display.
Analog interface: Fault current
Relays: Fault relay switches
symbol is displayed on the right
|
en
15