|
Type
|
Explosion proof gas transmitter with infrared sensor technology
|
|
Principle of Operation
|
Temperature-compensated infrared absorption, 4-beam technology
|
|
Gases and Ranges
|
Methane, propane, ethylene 0 to 20…100 %LEL
Methane 0 to 100 % vol.
Further substances and measuring ranges on request
|
|
Measuring performance (type 334, methane, 0 to 100 %LEL)
|
Digital resolution
Repeatability
Response time t0…90
Long-term drift
|
0.5 %LEL
≤ ± 1 %LEL
≤ 4 seconds (“normal response”)
< 1 second (“fast response”)
≤ ± 1 %LEL after 12 months
|
|
Electrical data
|
Output signals
Fault signals
Beam block warning signa
Maintenance signal
Power supply
Power consumption
|
4 to 20 mA, HART®
≤ 1.2 mA (configurable)
2 mA (configurable)
3 mA (configurable)
13 to 30 V DC, 3-wire
5.6 W (typical)
|
|
Ambient conditions
|
Temperature
Humidity
Pressure
|
– 40 to + 77 °C / – 40 to + 170 °F (operating)
– 40 to + 85 °C / – 40 to + 180 °F (storage)
0 to 100 %RH
700 to 1300 hPa / 23.6 to 32.5 inch Hg
|
|
Enclosure
|
Material
Connecting thread
Weight
Dimensions
Ingress protection
|
Stainless steel SS 316L
M25 or ¾'' NPT
2.2 kg (without accessories)
160 mm x Ø 89 mm / 6.3 '' x Ø 3.5 ''
IP 66 and IP 67, NEMA 4X
|
|
Approvals
|
ATEX
|
II 2G Ex d IIC T6 / T4 Gb (-40 to +40 °C / +80 °C)
II 2D Ex tb IIIC T80 °C / T130 °C Db IP65 (-40 to +40 °C / +80 °C)
|
|
IECEx
|
Ex d IIC T6 / T4 Gb (-40 to +40 °C / +80 °C)
Ex tb IIIC T80 °C / T130 °C Db IP65 (-40 to +40 °C / +80 °C)
|
|
UL (Classified)
|
Class I, Div. 1, Groups A, B, C, D /
Class I, Zone 1, Group IIC
Class II, Div. 1, Groups E, F, G
|
|
CSA (C-US)
|
Class I, Div. 1, Groups B, C, D
Class II, Div. 1, Groups E, F, G
|
|
|
Safety Integrity Level
|
SIL2 certified by TÜV (EN 61508, EN 50402)
|
|
|
CE mark: electromagnetic compatibility (directive 89/336/EEC)
|