Dräger PIR 7000 Technical Handbook

49
Operational Characteristics
Calibration Range Limits
During a calibration using the magnetic wand (part no. 45 43 428), the gas transmitter
provides information concerning the measured value of the device relative to the zero-point
and the set calibration gas concentration. This information is signalled as pulse sequences via
green status light as part of the zero-point and span calibration. This makes possible the
detection of a deviation of the zero-point and the sensitivity before a calibration. The deviations
are zero after calibration has been completed.
The symmetric range limits between range 1 and range 2 can be configured using the Dräger
CC-Vision GDS software, see "Calibration using the Dräger CC-Vision GDS Software" on
page 61.
Factory-preset configuration of the range limits: See page 64.
The green status light of the Dräger PIR 7000 resp. Dräger PIR 7200 indicates zero-point and
span deviations as follows:
Dräger PIR 7000 (in factory-preset configuration) Display of green status light
Zero-point:
Range 3: >3 %LEL
Range 2: >1.5 to ≤3 %LEL
Range 1: ≤1.5 %LEL
Sensitivity:
Range 3: >15 % from last stored calibration value
Range 2: >5 to ≤15 % from last stored calibration value
Range 1: ≤5 % from last stored calibration value
range 3
fixed
configurable
configurable
fixed
range 3
range 2
range 1
range 2
range 3
range 3
range 2
range 1
range 2
02923886_01_en.eps
sensitivity
(span)
measurement
value
zero-point
fixed
configurable
configurable
fixed

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