17
To send a Tare command via RS-232 / RS-485, enter the following strings:
In Streaming Mode: $$V<Enter>
In Polling Mode: Address$$V<Enter> (e.g. B$$V<Enter>)
Gas Select – The selected gas can be changed via RS-232 / RS-485 input. To change the selected
gas, enter the following commands:
In Streaming Mode: $$#<Enter>
In Polling Mode: Address$$#<Enter> (e.g. B$$#<Enter>)
Where # is the number of the gas selected from the table below. Note that this also corresponds to the
gas select menu on the fl ow meter screen:
# GAS
0 Air Air
1 Argon Ar
2 Methane CH4
3 Carbon Monoxide CO
4 Carbon Dioxide CO2
5 Ethane C2H6
6 Hydrogen H2
7 Helium He
8 Nitrogen N2
9 Nitrous Oxide N2O
10 Neon Ne
11 Oxygen O2
12 Propane C3H8
13 normal-Butane n-C4H10
14 Acetylene C2H2
15 Ethylene C2H4
16 iso-Butane i-C2H10
17 Krypton Kr
18 Xenon Xe
19 Sulfur Hexafl uoride SF6
20
75% Argon / 25% CO2
C-25
21
90% Argon / 10% CO2
C-10
22
92% Argon / 8% CO2
C-8
23
98% Argon / 2% CO2
C-2
24
75% CO2 / 25% Argon
C-75
25
75% Argon / 25% Helium
A-75
26
75% Helium / 25% Argon
A-25
27
90% Helium / 7.5% Argon / 2.5% CO2
(Praxair - Helistar® A1025)
A1025
28
90% Argon / 8% CO2 / 2% Oxygen
(Praxair - Stargon® CS)
Star29
29
95% Argon / 5% Methane
P-5
For example, to select Propane, enter: $$12<Enter>
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