Campbell-scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Uživatelský manuál stáhnout pdf (Strana 59)

Appendix A. EC150 Settings

TABLE A-2. ConfigCmd Values for Setting and Retrieving Settings

ConfigCmd Variable

Setting Description (some settings list possible

values for the DestSource variable)

Set Retrieve

6 106 Pressure Gain

7 107

Temperature Sensor:

• 0 = EC150 Temperature Probe

• 1 = EC155 Sample Cell Thermistor

• 2 = EC155 Sample Cell Thermocouple

• 3 = None (use fixed value)

• 4 = Auto-Select

8 108 Fixed Temperature Value

9 109

Unprompted Output Mode:

• 0 = Disable

• 1 =USB

• 2 = RS-485

10 110 RS-485 Baud Rate

11 111

Span/Zero Control:

• 0 = Inactive

• 1 = Zero

• 2 = Span CO

• 3 = Span H

O (See Appendix A.5.1,

ConfigCmd 11 Zero-and-Span Control.)

12 112 CO

Span Concentration

13 113 H

O Span Dewpoint Temperature

14 114 CO

Zero

15 115 CO

Span

16 116 H

O Zero

17 117 H

O Span

18 or 218 118 Heater Voltage (0 to 4.5375V, −1 = Off)

19 119 Reserved

20 120

Analog Output Enable:

• 0 = Disable

• 1 = Enable

21 121

PowerDown:

• 0 = Gas Head On

• 1 = Gas Head Off

99 N/A Save Settings to EEPROM memory

A.5.1 ConfigCmd 11 Zero-and-Span Control

To perform zeroing of CO

and H

O, ConfigCmd 11 is set to 1. After the

EC150 completes the zero, it will write the value to –1. The datalogger can

poll this value or simply wait for a period of time to allow the zeroing to

A-11

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 85 86

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