10
Technical data and notes
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G a s Q u a l i t y A n a l y z e r
GasLab Q2
Range of appropriate gases (Generic natural gases)
The gases must be technically free from dust and liquids!
Component name
Formula
Measurement range OEML R140
Technical range
Output
Methane
CH
4
70
– 100 mol%
70
– 100 mol%
Yes
C
2
H
6
+ higher alkanes (sum)
C2+
0
– 15 mol%
0
– 20 mol%
Yes
N
2
-concentration
N
2
0
– 25 mol%
0
– 25 mol%
Yes
CO
2
-concentration
CO
2
0
– 20 mol%
0
– 20 mol%
Yes
O
2
-concentration
O
2
≤0.1 mol%
≤0.1 mol%
No
H
2
-concentration
H
2
≤0.1 mol%
≤0.1 mol%
No
Water (gaseous)
H
2
O
≤0.1 mol%
≤0.1 mol%
No
Hydrogen sulfide
H
2
S
≤5 mg/m
3
≤5 mg/m
3
No
Calibration Gas
Range
Mixture (MCO2)*
Blend tolerance: ± 2% rel.
Accuracy : ± 2% rel.
with automatic calibration cycle.
Flow calibration gas: 30 l/h - 60l/h during calibration
Setting 0.2 MPa Range (0.2 MPa (gauge) ± 0.05MPa)
10 l gas cylinder :
(not always part of Elster)
Make sure the cylinder pressure is higher than 2 MPa (g) and to use a type that
meet the specifications and standards, if not delivered by Elster GmbH.
Further required accessories: Pressure regulator and connection lines
*The mixture depends on the gas to be measured. Please use an appropriate gas from the following table
Actual measurement
Range CO2
Preferred gas for
operational calibration service calibration
min
0
max
4 mol %
2 mol% CO2 + CH4 balance
5 mol% CO2 + CH4 balance
min
0
max
20 mol %
10 mol% CO2 + CH4 balance
20 mol% CO2 + CH4 balance
Environmental
Specifications
Value and Comment
Environmental pressure
Atmospheric Pressure
Environmental temperature
-25 °C to +55°C
Damp
0-100%RH
EMC: Immission
Electrostatic discharge according: IEC 61000-4-2 [25]
Mech. Stress
Vibration according IEC 60068-2-64 [20]; IEC 60068-2-47 [19]
Inputs / Outputs (I/O)
Values and / or Comment
Communication:
Speed: 345600 Baud
Type of interface TCP/IP (serial interface) (only for Connection box)
Analog outputs:
Quantity 4 (common ground, 0/4...20mA galvanically isolated)
Short circuit protection R max = 390
Ω
Digital outputs:
Quantity 4 (common ground, galvanically isolated)
1 xNC (Normally closed suitable for general alarm)
3 x NO (Normally open)
Semiconductor circuit operates as a potential-free contact
max.120 mA at 28,8V (DC)
Digital inputs:
Quantity 2 (2 wire lines, device powered max. 9 V, galvanically isolated).
e.g. process and calibration gas pressure control option
Ethernet communication:
1 x Ethernet (TCP/IP; Modbus; ftp; http)
Serial communication:
2 x RS485 (Modbus serial)
Operational interface
7-channel capacitive touch panel
