Dräger Polytron 8000 Series Technical Manual

42 Technical Manual | Dräger Polytron
®
8000 Series
Operation
Warm-up phase 1
The symbol is displayed on the right side of the display.
The remaining time is indicated on the left side of the display.
Analog interface: Maintenance current
Relays: Fault relay switches
For warm-up phase 1, the fault relay behavior is configurable (see "Setting fault
relay warm-up 1", page 67)
Warm-up phase 2
The symbol is displayed on the right side of the display.
The measured value is indicated on the left side of the display.
Analog interface: Measured value
Relays: Behavior as in measuring mode (Fault relay does not indicate warm-up
phase 2.)
Value is under measuring range
The gas concentration is beyond the measuring
range of the sensor.
Analog interface: Drift below zero
Relays: Fault relay switches
Fault indication
The symbol is displayed on the right side of the
display.
Analog interface: Fault current
Relays: Fault relay switches
Maintenance indication
The symbol is displayed on the right side of the
display.
This is displayed when alarms are deactivated,
during calibrations, bump test and maintenance
work.
Analog interface: Maintenance current
Relays: No change
Warning indication
The symbol is displayed on the right side of the
display.
Analog interface: Warning current
1)
Relays: No change
1) Only when warning current is enabled. Factory default setting: disabled.
Display example Description
O
2
Vol.%
O
2
Vol.%
20.9
O
2
Vol.%
20.9

Dräger Polytron 8000 Series Specifications

General

Ingress Protection	IP66/67
Detection Principle	Electrochemical, Infrared, Catalytic Bead
Gases Detected	Combustible gases, toxic gases, and oxygen
Display	LCD with backlight
Humidity Range	0 to 99% RH (non-condensing)
Housing Material	Stainless steel
Output Signal	4-20 mA, HART, RS-485 Modbus
Power Supply	10 to 30 V DC
Certifications	ATEX, IECEx, CSA
Temperature Range	-40 °C to +65 °C (depending on sensor)