Dräger PIR 7000 Technical Handbook

37
Accessories
● Connect gas lines to the connecting bushes. During this process, ensure in particular that
the material is compatible with the substance to be monitored.
The gas inlet and gas outlet connection can be freely selected.
● Check system for sufficient gas-tightness.
— The response time is dependent on the set volume flow (see "Performance Characteristics
(typical values)" on page 73).
Operating notes
The display of the Dräger PIR 7000/Dräger PIR 7200 depends on the partial pressure of the
measured gas component. Alternating gas pressures or gas pressures which differ from the
atmospheric pressure may be created in the process adapter due to system-related
parameters such as flow rates, nominal diameters of inlets etc.
The maximum allowed internal pressure is 3000 mbar, the minimum allowed internal pressure
is 700 mbar.
Process Cuvette PIR 7000
*)
(Part no. 68 11 415)
Intended use:
— The process cuvette is used to operate the gas transmitter in pump mode when the
measured gas is delivered to the gas transmitter via an external pump or in the case of a
different active gas supply (e.g. by a process-related pressure difference).
— The process cuvette is made of stainless steel (SS 303) and is better suitable for corrosive
substances.
— Only for gas transmitter without splash guard, remote test adapter or flow cell.
— Dräger Safety recommends that you do not exceed a flow rate of 20 L/min. Increasing flow
rates may lead to an increase of pressure in the process cuvette. Gas flow rate monitoring
must be ensured.
The gas transmitter features two status lights and provides the following information:
— Continuous green for indicating operational readiness
— Continuous yellow for displaying a fault
— Flashing green/yellow for status messages during the calibration procedure.
These light signals are arranged on two opposing sides of the process cuvette.
NOTICE
After each installation or removal of process adapter, it is absolutely necessary to calibrate
the zero point and sensitivity!
*)
The process cuvette PIR 7000 is also suitable for the use with Dräger PIR 7200.

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