Related Manuals for catec Li-Cor LI-830
Summary of Contents for catec Li-Cor LI-830
- Page 1 The LI-830 and LI-850 Integrator’s Guide Turfschipper 114 2292 JB Wateringen tel. : +31 174 272330 e-mail : info@catec.nl www.catec.nl...
- Page 3 LI-830 and LI-850 Gas Analyzers Integrator's Guide LI-COR Biosciences 4647 Superior Street Lincoln, Nebraska 68504 Phone: +1-402-467-3576 Toll free: 800-447-3576 (U.S. and Canada) envsales@licor.com Regional Offices LI-COR Biosciences GmbH Siemensstraße 25A 61352 Bad Homburg Germany Phone: +49 (0) 6172 17 17 771 envsales-gmbh@licor.com LI-COR Biosciences UK Ltd.
- Page 4 Notice The information in this document is subject to change without notice. LI-COR MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. LI-COR shall not be held liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
- Page 5 CE Marking: This product is a CE-marked product. For conformity information, contact LI-COR Support at envsupport@licor.com. Outside of the U.S., contact your local sales office or distributor. California Proposition 65 Warning WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
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Page 7: Table Of Contents
Contents Section 1. Configuration grammar About XML communications Types of data Connecting over a terminal program Sending a command Reading data from the instrument Configuring the output rate Enabling and disabling an output variable Turning off all output variables except CO2 Removing XML tags Reading the full dataset Reading instrument settings... - Page 8 Tech tags 2-11 Full XML grammar 2-12 Appendix A. Supplemental information Serial cable pin assignments Circuit board connector Details on the serial connection Serial communication parameters Finding your Windows serial port Connecting with a Windows terminal program Connecting with a Mac terminal program...
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Page 9: Section 1. Configuration Grammar
Section 1. Configuration grammar The LI-830 and LI-850 can communicate with a computer or a system controller through a serial connection (either the RS-232 or USB output). The following dis- cussion describes how to implement the communication protocol. To help facil- itate this discussion, this document will rely exclusively on a terminal program to communicate with the gas analyzer. -
Page 10: Types Of Data
Section 1. Configuration grammar <name> <first>george</first> <last>smith</last> </name> In this example, the outermost element encompasses two other elements <name> that contain data. All elements combined make up the XML document. The LI-830 and LI-850 communications are not case sensitive. So, your commands can be upper case, lower case, or a combination of upper and lower case if you are so inclined. -
Page 11: Connecting Over A Terminal Program
Section 1. Configuration grammar Connecting over a terminal program To connect with the analyzer, power it on and connect the USB cable between the analyzer and your computer. Or, connect to the board as described in Circuit board connector on page A-1. Launch the terminal program. -
Page 12: Sending A Command
Section 1. Configuration grammar Sending a command It can be a bit tricky to send commands if you're unfamiliar with terminal pro- grams. Here are some tips that might help you get started: Note: The root tag for the LI-850 is and the root tag for the LI-830 is <li850>... -
Page 13: Reading Data From The Instrument
Section 1. Configuration grammar Reading data from the instrument This section describes how to view measurements from the instrument in a ter- minal program. Configuring the output rate Copy the following command and paste it into the TeraTerm window: <li850> <cfg>... -
Page 14: Turning Off All Output Variables Except Co2
Section 1. Configuration grammar Turning off all output variables except CO Send this command to stop the instrument from sending all the measurements except CO and to send CO once per second: <li850> <cfg> <outrate>1</outrate> </cfg> <rs232> <co2>true</co2> <flowrate>false</flowrate> <h2o>false</h2o> <celltemp>false</celltemp>... -
Page 15: Removing Xml Tags
Section 1. Configuration grammar Removing XML tags So far we've been viewing data inside the XML tags. If you simply want to see the data without the enclosing XML tags, send this command: <li850> <rs232> <strip>true</strip> </rs232> </li850> The instrument will respond with the confirmation message: <li850><ack>true</ack></li850>... -
Page 16: Reading Instrument Settings
Section 1. Configuration grammar Reading instrument settings Previously we described how to configure the data that is sent over the serial port (RS-232 or USB). Here we describe how to read the current settings in the instru- ment. You may want to set the output rate ( ) to 0 for these exercises. -
Page 17: Polynomial Settings
Section 1. Configuration grammar Polynomial settings To receive the coefficients for the calibration polynomial function, send: <li850> <poly>?</poly> </li850> The instrument will return the factory-determined polynomial coefficients that are unique to your instrument. See Polynomial tags on page 2-10 for the full description. Pump settings To receive the pump settings, send: <li850>... -
Page 18: Software Version
Section 1. Configuration grammar Software version To request the software version, send: <li850> <ver>?</ver> </li850> The instrument will return the software version number. 1-10 LI-830 and LI-850 Gas Analyzer Integrator's Guide... -
Page 19: Applying Instrument Settings
Section 1. Configuration grammar Applying instrument settings Here we describe how to apply some settings. Earlier we described how to set the output rate. The output rate is a configuration: <li850> <cfg> <outrate>1</outrate> </cfg> </li850> You can also configure the other settings. For example, sending this command: <li850>... -
Page 20: Calibrating The Instrument
Section 1. Configuration grammar Calibrating the instrument The analyzer CO and H O (LI-850 only) zeros and spans can be performed using XML grammar. Just like when you calibrate with the software, be sure that a suit- able calibration gas is flowing through the optical cell before changing a zero or span. - Page 21 Section 1. Configuration grammar Set the secondary CO span (optional). Using a CO span gas with a known concentration of CO in air (different from the concentration used to set the primary span): Send the XML command to initiate the second span. <li850>...
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Page 22: Configuring The Alarms
Section 1. Configuration grammar Configuring the alarms The alarms can be set for either CO or H O (in the LI-850). In either case, each alarm features a level and a deadband. The low alarm ( ) is triggered when the <low>... -
Page 23: Configuring The Analog Outputs
Section 1. Configuration grammar Configuring the analog outputs The LI-830 and LI-850 can send two analog signals over analog output channels (either voltage or current). Analog signals are linear, single-ended outputs. The voltage channels (pins 7 and 9) can be configured for ranges of 0 to 2.5 V or 0 to 5.0 V. - Page 24 Section 1. Configuration grammar 1-16 LI-830 and LI-850 Gas Analyzer Integrator's Guide...
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Page 25: Section 2. Element Descriptions
Section 2. Element descriptions In this section we break down each subset of the XML tags. We begin with the root-level tags and then describe the subordinate tags in greater detail. Table 2-1. The root tag for all XML communication is <li850>... -
Page 26: Data Tags
Section 2. Element descriptions Data tags tag contains all data values sent from the instrument. All of the ele- <data> ments within are readable only. The -related tags apply to the LI-850 <data> <h2o> only. Table 2-2. Elements available in the tag. -
Page 27: Raw Data Tags
Section 2. Element descriptions Raw data tags The raw detector counts can be retrieved by querying the parent tag. The <data> -related tags apply to the LI-850 only. To see the raw detector counts, send: <h2o> <li850> <data> <raw>?</raw> </data> </li850>... -
Page 28: Rs-232 Serial Tags
Section 2. Element descriptions RS-232 serial tags tag is where you set which values are output in means TRUE <rs232> <data> that the value will be sent; means it will not be sent. The -related tags FALSE <h2o> apply to the LI-850 only. Table 2-5. -
Page 29: Configuration Tags
Section 2. Element descriptions Configuration tags Configuration tags are used to apply settings to the instrument. Table 2-6. Elements within the tag. <cfg> Root Parent Children Values Comments <outrate> 0.5 to 20 Output data every N seconds (0.5 second increments). True | Turn heater on/off. -
Page 30: Alarm Tags
Section 2. Element descriptions Alarm tags Alarm tags configure the alarm states. Root Parent Parent Children Values Comments <enabled> True | False R/W Enable alarms <source> co2 | h2o Channel (CO <high> Float High alarm on at this value <li850> <cfg>... -
Page 31: Dac Tags
Section 2. Element descriptions DAC tags DAC tags configure the analog outputs. Root Parent Parent Children Values R/W Comments <range> 2.5 | 5.0 R/W Output voltage. 0 to 2.5V or 0 to 5.0V Various R/W CO2 | H2O | H2ODEWPOINT | <d1>... -
Page 32: Pump Tags
Section 2. Element descriptions Pump tags Pump tags are used to control the LI-COR pump. Table 2-7. Tags used to control the pump (if applicable). Root Parent Children Values Comments <enabled> True | False Turns pump on/off Integer Number of hours pump has run <time>... -
Page 33: Calibration Tags
Section 2. Element descriptions Calibration tags Calibration tags are used to start a calibration or read calibration information. When calibrating, must be paired with a or a , or a <date> <co2zero> <co2span> . The -related tags apply to the LI-850 only. <h2ozero>... -
Page 34: Polynomial Tags
Section 2. Element descriptions Polynomial tags Polynomial tags contain calibration information from the instrument. The values included are determined at the factory. Do not change the polynomial values because that will adversely affect the analyzer performance. The -related tags <h2o> apply to the LI-850 only. -
Page 35: Tech Tags
Section 2. Element descriptions Tech tags Tech tags indicate information about the instrument, including pump and optical source information. They are not included in the status information returned by the instrument. You can poll the tech information specifically. Table 2-10. Tags used to read information about the pump and source. Root Parent Parent... -
Page 36: Full Xml Grammar
Section 2. Element descriptions Full XML grammar The full configuration grammar for the LI-850 is given below. The LI-830 gram- mar is identical except that the root tag is , and the tags related to H O will <li830> be absent. <li850>... - Page 37 Section 2. Element descriptions <dacs> <range>{2.5 or 5.0}</range> <d1>{none|co2|h2o|h2odp|celltemp|cellpres}</d1> <d1_0>{float}</d1_0> <d1_f>{float}</d1_f> <d2>{none|co2|h2o|h2odp|celltemp|cellpres}</d2> <d2_0>{float}</d2_0> <d2_0>{float}</d2_f> </dacs> </cfg> <pump> <enabled>{bool}</enabled> <time>{int}</time> <drive>{int}</drive> <status>{int}</status> </pump> <source> <time>{int}</time> </source> <cal> <co2lastzero>{iso date}</co2lastzero> <co2kzero>{float}</co2kzero> <co2lastspan>{iso date}</co2lastspan> <co2lastspan2>{iso date}</co2lastspan2> <co2kspan>{float}</co2kspan> <co2kspan2>{float}</co2kspan2> <h2olastzero>{iso date}</h2olastzero> <h2okzero>{bool}</h2okzero> <h2olastspan>{iso date}</h2olastspan> <h2olastspan2>{iso date}</h2olastspan2>...
- Page 38 Section 2. Element descriptions <serialnum>{string}</serialnum> <ack>{bool}</ack> <error>{string}</error> </li850> 2-14 LI-830 and LI-850 Gas Analyzer Integrator's Guide...
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Page 39: Appendix A. Supplemental Information
Appendix A. Supplemental information Serial cable pin assignments The image below shows the pin assignments for the 9-pin RS-232 serial connector. Circuit board connector The LI-830 and LI-850 circuit board has a connector that can be used as an altern- ative to the DB-9 and USB connectors on the case, or if your instrument was provided without a case in the OEM configuration. - Page 40 Appendix A. Supplemental information LI-830 and LI-850 Gas Analyzer Integrator's Guide...
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Page 41: Details On The Serial Connection
Appendix A. Supplemental information Details on the serial connection If you are experiencing difficulty connecting to the instrument, here are some tips that may help resolve the issue. Serial communication parameters The LI-830 and LI-850 can communicate through a RS-232 serial port on the front of the instrument. -
Page 42: Connecting With A Mac Terminal Program
Appendix A. Supplemental information Connecting with a Mac terminal program There are many terminal programs available (in addition to Mac's built in com- mand prompt). Most modern programs will work, and you will not need to identify the port on a Mac. We tested a terminal program for Mac called Serial. - Page 44 LI-COR Biosciences 4647 Superior Street Lincoln, Nebraska 68504 Phone: +1-402-467-3576 Toll free: 800-447-3576 (U.S. and Canada) envsales@licor.com Regional Offices LI-COR Biosciences GmbH Siemensstraße 25A 61352 Bad Homburg Germany Phone: +49 (0) 6172 17 17 771 envsales-gmbh@licor.com LI-COR Biosciences UK Ltd. St.
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