Dräger Polytron Repeater WirelessHART 6700 IR WL Manual Del Usuario página 60

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Technical data
17.4 Typical performance characteristics
Lower internal alarm limit
Initialization time
Response time for proof test (validation)
2)
T90 response time Without accessories
2)
T90 response time with weather cap (with/without sun protec-
tion)
2)
T90 response time with weather cap and insect guard
(with/without sun protection)
Effect of pressure, 700 to 1300 hPa
Repeatability
Linearity error (maximum)
Long-term drift (after approx. 4 years),
zero-point
Effect of temperature, -40 to +65 °C
Effect of humidity, 0 to 100 % r.h. at 40 °C
1) As per NORSOK standard S-001 for technical safety in the Norwegian petroleum industry.
2) Diffusion method as per EN 60079-29-1.
17.5 Cross-sensitivities
The gas detector is used for continuous monitoring of combustible gases and vapors containing hydrocarbons. The numerous detectable hydrocarbon gases are not
explicitly distinguished. The tables below provide information about the cross-sensitivities for important hydrocarbon gases relative to the three %LEL standard
configurations methane, propane, and ethylene (for the Polytron
specified values is +/- 5 %LEL.
60
Methane
Corresponds to the selected upper capture range limit
1)
700-1100 hPa: 0.03% of the display per hPa
1100-1300 hPa: 0.1 % of the display per hPa
± 1 % of measuring range (1 sigma)
± 3 % of the measuring range or ± 8 % of the display (larger value applies)
± 3 %LEL
The effect of temperature is included in the linearity error.
Fulfills the requirements of the standard EN / IEC 60079-29-1:2016.
®
6700 Type 3.4, ethylene is omitted as a standard configuration). The typical tolerance of the
Instructions for use |
Dräger Polytron
Type 3.3
Propane Ethylene
60 s
5 s
5 s
15 s
45 s
± 1.5 %LEL ± 6 %LEL
®
6700 IR WL, Dräger Polytron
Type 3.4
Methane Propane
± 3.5 %LEL ± 1 %LEL
® ®
Repeater WirelessHART