Dräger Polytron 8000 Series Technical Manual

Technical Manual | Dräger Polytron
®
8000 Series 87
Factory default settings
15.3.8 Polytron
®
8720 IR
Display capture
offset
0 The absolute values of the display capture
must be inside these limits:
-850 to 425 ppm
(propane Type 340)
-1800 to 2200 ppm
(methane Type 340)
Display capture
low
-750 ppm
(methane)
-85 ppm
(propane)
Display capture
high
750 ppm
(methane)
85 ppm
(propane)
1) The maximum Beam block limit depends on the type of transmitter and the selected measuring
gas.
Menu Default setting Range
Menu Default setting Range
Calibration gas CO2
Calibration gas
units
Vol%
Calibration gas
concentrations
4.0 Vol% 0.2 to 100 Vol%
A1 Alarm 1 Vol% 0.01 to 100 Vol%
A2 Alarm 2 Vol%
LEL type -
Measured gas CO2
Measured gas
units
Vol% Vol% / PPM
Full scale deflec-
tion
10 Vol% 0.2 to 100 Vol%
Beam block Off On / Off
Beam block cur-
rent
2 mA 0 to 3.5 mA
Beam block limit 0.1 Vol% 0 to 0.1 Vol%
Calibration inter-
val
[days]
360 0 to 720
Response Normal Normal / Fast
Display capture
offset
340 ppm The absolute values of the display capture
must be inside these limits:
-1000 to 1000 ppm
(carbon dioxide)
Display capture
low
-200 ppm
Display capture
high
200 ppm

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)