Dräger PIR 7000 Technical Handbook

53
Maintenance
Check the Measuring Cuvette of the Gas Transmitter and Clean if
Required
● To avoid false alarms during inspection, set the analogue output signal to maintenance
signal and/or ensure that the alarm activation in the central device is disabled.
● Remove the splash guard and, when required, any additional accessories from the gas
transmitter.
● Examine the air inlet and air outlet openings for contamination and damage.
● Install the splash guard and when required any other accessories to the gas transmitter.
● Re-activate the analogue output signal if it has been set to maintenance signal. And/or,
enable the alarm activation in the central device.
● Check optical surface areas (mirror 1
and window 2) and other accessories for
contamination, clean with water or alco-
hol and carefully dry with absorbent cot-
ton or a smooth cloth.
Do not scratch the mirror or window!
Completely remove all cleaning agents!
Do not use sharp tools like scrapers or
screwdrivers!
04323886_01.eps
1
2

Dräger PIR 7000 Specifications

General

Detection Principle	Infrared (IR)
Pressure Range	700 to 1300 hPa
Ingress Protection	IP66/67
Gases Detected	Hydrocarbons
Measurement Range	0 - 100 %LEL (Lower Explosive Limit) or 0 - 100 vol.%
Operating Temperature	-40 to +65 °C
Output Signal	4-20 mA
Housing Material	Stainless steel
Certifications	ATEX, IECEx, UL, CSA
Response Time	t90 ≤ 4 s