Reference Manual (this manual). Provides highly detailed information on instrument operation and configuration. Much of this manual will not be of interest to the average user as the OVA 5000 is pre configured to user specifications by Cogent Environmental technicians during installation.
FieldPoint modules attached to the back wall of the electronic compartment. The OVA program is used to operate the OVA 5000. The program functions are accessed using the keypad. FieldPoint modules are used to control analytical sample and reagent handling, and data output.
Emphasis Use to emphasize the importance of a point. Special Bold Items you must select, such as menu options, command buttons. Important information. Caution: A tip or an item of note. Note: OVA 5000 Reference Manual V1.3...
This instrument is designed to run continuously and as such a good waste removal system should be put in place. The OVA 5000 has been designed to be located on the reagent cabinet, which has mounting tabs on each of it’s four legs.
Caution: Earth must be connected to the instrument. The input voltage to the OVA 5000 is connected, via the isolation switch, to fuse F1 and line filter LF1 on the main terminal block TB1. The fuse F1 unit contains 3.15A HBC replaceable fuse. Terminal block TB2 has the 5V, 12V, ground and filter pump connections.
(when not backflushing). 2.6 Preparing For Operation Once the OVA 5000 has been unpacked and checked, it must be tested to ensure correct operation. Before switching the power on.
Logging in to the OVA software. Switch the instrument on with the red isolation switch located on the upper right hand side of the cabinet. The OVA 5000 software should start automatically showing the Main screen shown below. Figure 3. OVA 5000 Main Screen Press the Log In button found in the bottom left of the screen and enter your username and password.
Start the relevant pump turning by clicking the pump icon with the joystick mouse. When the volume in the measuring cylinder reaches about 7 or 8 mL, stop the pump by clicking on the pump icon again or pressing the “Esc” key on the keypad (recommended). OVA 5000 Reference Manual V1.3...
Press Add and collect fluid from the drain tube in the measuring cylinder. Enter the volume collected in the pop up dialog. Repeat for any other drain pumps. OVA 5000 Reference Manual V1.3...
FieldPoint Explorer is required. Refer to section 4, FieldPoint System on page 24 for further information on the FieldPoint system. Note. The FieldPoint system on the OVA 5000 is configured before shipping. Use of FieldPoint Explorer is only required in certain rare cases when problems arise.
This tab shows concentration history of each metal, in each analysis stream simultaneously on the one graph and provides tools for closer analysis of the graph. Refer to section 3.7.1.1 of the OVA 5000 Operators Manual for instructions on use of these tools.
3.2.4 Manual Tab This tab allows the user to perform individual OVA 5000 functions with or without scripts for testing purposes. When this tab is active, the wet chemistry compartment schematic on the left of the screen becomes a user interface.
Ensure that the correct parameters have been entered for the 4-20 mA output for each metal (see section 5.2.3 of the OVA 5000 Operation Manual). Choose a metal from the drop down menu and enter the required ppm value for that metal in the dialogue box. Click the Update ppm button to update the 4-20 mA output.
Figure 10. Configure System Page 3.4.1 Hardware Configuration Page The Hardware Configuration page is shown below in Figure 11. This page configures all OVA 5000 pumps (including filter pumps), the alarm output and inputs, and the voltammetry hardware settings. The settings on this page will be pre set before the instrument is shipped and should not need to be changed.
The “comm res name” (communication resource) field should have “FP Res” for all FieldPoint modules used. The “module” field refers to a specific FieldPoint module and its location at the back of the OVA 5000 electrical compartment. Clicking on this field will provide a list of alternatives that are suitable for that settings box.
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FieldPoint controlled stirrers only have a fixed speed. Spill Alarm. The OVA 5000 wet chemistry compartment has one or more sensors at the bottom to detect any liquid spilt from broken tubing, etc. If a pretreatment cell is fitted, a separate spill detector may be assigned to that cell if required.
3.4.1.5 Alarm Sound Output The OVA 5000 comes with an internal buzzer which sounds when an alarm is triggered. This is activated by the FieldPoint module channel settings in the box found to the lower far right of Figure 11. If necessary, this output channel can be changed as described in section 3.4.1.1, Editing FieldPoint Settings on page 20.
System Page will return to the front. 3.5 View Alarms Page This page lists the history of alarms triggered on the OVA 5000. It is similar to the Alarms tab in the Run page but it doesn’t have the acknowledge alarm function.
4 FieldPoint System 4.1 Overview The FieldPoint system in the OVA 5000 comes preconfigured with the required settings. If these settings become lost or corrupted, or a module needs replacing, it may be necessary to reconfigure using FieldPoint Explorer. 4.2 FieldPoint Explorer National Instruments’...
The locations of FieldPoint units on the Electrical panel are as per Figure 13. Wiring of the FieldPoint units and labeling are as per Table 2 for a generic 6 pump OVA 5000. Note as OVA 5000 units are configured to be application specific, the wiring of your OVA may differ.
5 OVA 5000 Scripts The OVA 5000’s analysis cycle is controlled by a custom designed scripting system. These can be modified using standard text editors such as Notepad or Word and selected for use in the OVA schedule as described in section 3.4.3, Scheduling Page on page 22.
Initialv in milli-volts is maintained for deposittime in seconds, after which finalv in milli-volts is asserted reset re-intialises the potentiostat card to the default settings. OVA 5000 Reference Manual V1.3...
(reagents, carryover etc.) so that these errors can be minimised. cell Component of the OVA 5000 in which the chemical analysis takes place. clac Chlor - Acetate Electrolyte. Used for the analysis of metals such as Zn, Cd, Pb &...
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Parts per Million. Unit of concentration equal to 1 mg (milligram) per litre or kg. reduction Gain of an electron(s) by an atom or molecule. reference electrode Electrode in the analytical cell against which the potential at the Working Electrode is compared. OVA 5000 Reference Manual V1.3...
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W.E. See Working Electrode. working electrode The electrode at the bottom of the analytical cell at which the accumulation and stripping (reduction and oxidation) of the analyte takes place. OVA 5000 Reference Manual V1.3...
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