Technical Manual
|
Dräger Polytron
®
8000 Series
41
Operation
8 Operation
8.1
Display, analog interface and relay status
The following display examples show Polytron
®
8100 EC.
For Polytron
®
8200 CAT and Polytron
®
8310 IR gas names are not predefined. Gas
names must be entered via DrägerPolysoft PC software.
8.1.1 Measuring
mode
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
In normal operation, the display shows the mea-
sured gas concentration, the selected gas and the
unit of measurement.
Exceeding the alarm thresholds. Example shows
pre alarm A1.
O2
Vol.%
20.9
O2
A1
19.0
Display example
Description
Value is over measuring range
The gas concentration is beyond the measuring
range of the sensor.
Analog interface:
Measuring range exceeded
Relays:
A2 relay switches
O2
A2