Vici Valco 6 Port Valve Manual

[Annemie]

Thispackage is intended for use with the VICI Universal Electric Actuator.This actuator works for two position and multiposition valves, and comes in two varieties: one with a USB B receptacleat the back, and one with three pins that can be used with either RS232 or RS485. A third variety uses BCD (binary codeddecimal) but this version is not compatible with this library. Note also that the RS232/485 versions have two differentorder codes, but according to the manual they can beconverted by setting a switch on the PCB.

The USB variety uses an FTDI chip and shows up as virtual COM port or VCP on your PC. The USB version works with thispackage directly, just plug it into your PC and crack on. The RS232/485 version uses twointernally connected 3 pin TE Connectivity AMP connector headers. The valve comes with a mating cable assembly, the usercan also make their own connector (Housing: 102241-1, contacts:87756-4). Either way, in order to work with this package, anFTDI USB to serial converter cable is required (I personallyrecommend buying the wire ended FTDI cable and crimping on a connector). The ftdi_serial library currently does notwork properly with non-FTDI converter cables!

The device_serial is the unique serial number of your valve (if it's USB) or your converter cable. In order to findthat ID, plug in your valve/cable and run Serial.list_device_serials() from a Python console.

The Baud rate is a property of the controller and needs to be set explicitly. 9600 is the default baud rate. If you can'testablish communication, a wrong baud rate is the most likely cause. Refer to the manualfor viewing and changing the baud rate of a controller.

LI-COR LI-7810 CH4/CO2/H2O and LI-7815 CO2/H2O Trace Gas Analyzers are designed to be flexible, for use in a variety of different configurations and research applications. One frequent use is integration of the analyzers with a multi-point sampling system. These sampling systems can be used from research in a lab to long-term monitoring sites, where there is a need for frequent and automated calibration. A good example is a tall tower atmospheric monitoring site, an example of which is shown in Figure 1.

Here samples are collected from different heights on the tower, and the instrument is calibrated on a frequent basis in accordance with network protocols. The implemented system must be capable of selecting samples from the tower as well as a suite of calibration gases, either via a pre-programmed sequence or via direct, remote control.

To meet stringent accuracy requirements specified for measurement network applications, multiple, expensive calibration gases, stored in high-pressure cylinders, are in daily use at monitoring sites. The use of these calibration gases, and the frequency with which cylinders must be changed is impacted significantly by the flow rate requirements of installed analytical instrumentation.

If remote actuation, and/or an automated valve outlet sequence is required, there are several options available. In Option 1 we present a brief introduction to GCWerks. This software provides the most complete solution for remote, scheduled valve control, as well as instrument data acquisition, processing, and visualization. In Options 2, 3, and 4 we look at some less sophisticated solutions for basic remote valve control, some of which provide the facility to run automated, timed actuation sequences. In Option 5, we present a brief introduction to possible custom solutions requiring a degree of programming knowledge. Following descriptions of these 5 options we provide a worked example of what can be achieved with one of the less sophisticated solutions available, giving instructions how to configure a basic valve switching sequence using Option 3, VCom.

GCWerks is now compatible with LI-COR LI-78xx instruments and is available for purchase. GCWerks manages instrument data acquisition, processing, and visualization, in addition to sophisticated instrument performance monitoring and diagnostics. It is the software of choice for a sizeable number of global sites for networks. Control of the VICI selector valve is fully integrated into the GCWerks software, allowing simple valve port selection as well as complete management of sample measurement and calibration protocols, with selected sample/valve port synchronized with other instrument data. GCWerks is capable of coordinating measurements from multiple analyzers at multiple remote sites, offering complete atmospheric measurement network management.

At the 2019 meeting of the American Geophysical Union (AGU), LI-COR presented a poster, co-authored by the developer of GCWerks, displaying data acquired and processed using the software. You can download the document here and see examples of valve control/sample selection, and resulting plots produced by the software:licor.app.boxenterprise.net/s/z3ukos1fnugdfxp2imwv2yu6mq423h3b

HyperTerminal has not been included in a Windows operating system since Windows XP. The developer of the original HyperTerminal, Hilgraeve, has continued to develop the software and it is now available for purchase for use with more recent Windows operating systems, including Windows 10.

HyperTerminal supports text-based communication through Telnet, SSH, Modem, and Serial port connections. The software receives and processes data through a terminal emulator that is designed to mimic different types of terminal systems. The terminal emulator processes control codes and decides where and how that data is displayed on the terminal screen, and allows control codes to be sent back to the system as needed.

Diablo offers a user-friendly interface, along with useful valve sequencing features. The Controller software replicates features of the manual remote control, allowing increment/decrement of valve position. In the Sequencer software, sequence step parameters can be entered via the simple GUI, and steps repeat either indefinitely, after a defined number of cycles, or a defined time period. Current valve position is displayed within the GUI. Sequences can be saved for later use. Learn more by visiting

As an example of what can be achieved with one of the less sophisticated solutions available, below is an example of how to configure a basic valve switching sequence using VCom. In this example a 16-port dead-ended VICI selector valve (model EUTA-SD16MWE) was connected to a LI-7810 analyzer. For the purpose of this simple test, all inlet ports of the VICI selector valve were sampling ambient air.

VICI selector valves are supplied with one of three communications connection options: RS-232/485, USB, or BCD. To operate the valve remotely, the valve can be connected to a laptop or PC at the site and then controlled remotely by accessing the computer, or alternatively the valve can be connected directly to an Ethernet port via a suitable adapter. Here, we present an example of how such an adapter can be used to connect the VICI selector valve directly to a local network or internet, allowing remote control without the need for a local computer.

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