Valco Instruments Co. Inc. Dynacalibrator Model 230 Instruction Manual Manufactured by: Valco Instruments Co. Inc. 8300 Waterbury Houston, TX 77055 Rev 9/13 North America, South America, and Australia/Oceania contact: Valco Instruments Co. Inc. 800 · 367· 8424 713 · 688· 9345 713 · 688· 8106 valco@vici.com sales tech fax Europe, Asia, and Africa contact:: VICI AG International Schenkon, Switzerland Int + 41 · 41 · 925· 6200 Int + 41 · 41 · 925· 6201 info@vici.
Symbols used in this document Attention Radiant heat warning Entanglement warning Electrical warning
Table of Contents Introduction General Description.......................................................................................................................... 1 Dynacal® Permeation Devices....................................................................................................... 1 How to Use This Manual.................................................................................................................. 1 Basic Design.....................................................
Table of Contents (continued) Electrical Description...............................................................................................................................27 Maintenance...............................................................................................................................................28 Instrument Inspection and Cleaning........................................................................................28 Carrier Flow Rate Verification..................
Introduction General Description VICI Metronics Dynacalibrators® use Dynacal® permeation devices to generate the precise gas concentrations necessary for calibrating air pollution analyzers, monitors, and other instruments that measure gas concentrations in the partsper-million range and lower. Dynacalibrators are available in three models, each with a large variety of optional features to fit a wide range of calibration requirements.
Introduction As shown in Figure 1a, the carrier stream passes through scrubber #1 and line filter LF1 (30µ) to differential pressure regulator DPR1. The scrubber contains specially-activated charcoal designed for broad-based scrubbing action, and is particularly effective in removing sulfur dioxide and other sulfur compounds.
Introduction When the non-pressurized internal pump option is included, the rear-panel zero outlet port is internally connected to a passive scrubber which functions identically to those previously described. In operation, the zero outlet is plumbed either to the analyzer sample intake port or to the zero air intake port, so that analyzer suction provides flow through the scrubber. Options More detailed information found in “Advanced Theory of Operation” on page 22.
Introduction Specifications Refer to page 35 for additional data on units with the electronic flow control option.
Getting Started Every Dynacalibrator is completely calibrated, thoroughly tested and inspected, and carefully packed prior to shipment. The carrier has assumed responsibility for its safe delivery upon acceptance of the shipment. Initial Receiving Inspection/Check On receipt of your unit, before signing the waybill and releasing the carrier’s agent, inspect the shipment for the following: 1. The number of cartons received tallies with that on the waybill. 2.
Getting Started ����������������� ������������� ����� ������ ������ ������ ����� ������ ����������� �������������� Figure 2: Dynacalibrator packaging Concealed Damage Concealed damage is damage which is not apparent until after the equipment has been unpacked and examined or tested. In the event that concealed damage is discovered, a written request for inspection must be forwarded to the carrier’s agent within 15 days of the delivery date.
Getting Started Unit Location In general, the Dynacalibrator should be as close as possible to the analyzer to be calibrated, as long as: • the ambient temperature is at least 2°C below the selected operating temperature of the permeation chamber. • ambient temperature variations are minimal. • exposure to precipitation and condensation is minimized. • ambient particulate levels are minimal. (In the event that dust is prevalent, the unit should be equipped with a Metronics Particulate Filter Assembly.
Getting Started Rear Panel Connections Remove all shipping caps and shipping plugs from the rear panel bulkhead fittings. All these hardware items should be saved for reuse if the Dynacalibrator must be stored or returned to VICI. The connections available on the rear panel of the different models and configurations are listed in Table 1.
Getting Started On all units with an internal pump, the supply inlet port is internally connected directly to the suction side of the pump. Since the output of the pump is equipped with a particulate filter and activated-charcoal scrubbers, the supply inlet port should normally be left unconnected, completely open, and clear of any obstructions, except as noted below for dusty environments. If you need to alter the carrier and/or dilution streams by adding filters, scrubbers, dehydrators, etc.
Getting Started 10 Bypass Loops Only those Dynacalibrators with internal pumps are equipped with fittings for bypass loops in either or both the carrier and dilution streams (input configurations -3X, -4X and -5X). The fittings – labeled CARRIER OUTLET, CARRIER INLET, DILUTION OUTLET, and DILUTION INLET – are downstream from the pump, so the loops must be completed in order for the internal pump to be used .
Getting Started 11 .15 DYNACALIBRATOR .10 30° MODEL 230 120° SHUTDOWN .
12 Calculations Concentration of the permeant compound in the span outlet stream is inversely proportional to the carrier flow rate through the chamber. It is determined using the following equation: Where: ��������������������� ����� � K = 24.
13 Initial Power-Up Connections 1. Plug the supplied power cord into the rear mounted power supply. Ensure that the power supply output cable is plugged into the interface board power connector. 2. If you do not have the pump option: Connect the carrier gas source (25 psi maximum pressure) to the carrier inlet on the rear panel. If this is a dual inlet system: Connect appropriate source gases to the carrier inlet and dilution gas inlet.
Initial Power-Up 14 Setting the Chamber Temperature Manually To read the current set point: press and hold the button. To read the chassis environment temperature: press and hold the button. 1. To set the desired temperature, simultaneously press the and buttons, then release them. The PNL light will start flashing, indicating the controller is in the temperature set mode. 2. Use the and buttons to reach the desired temperature set point. NOTE: Maximum temperature set point is 110°C; minimum is 30°C. 3.
Initial Power-Up 15 Setting the Chamber Temperature via Serial Port (RS-232) Refer to the section titled “Serial Port Communications” on page 16. Installing the Permeation Device(s) 1. Turn off the main power switch. 2. With the tool provided, rotate the panel lock screw 90° counterclockwise. 3. Remove the front panel oven cover to access the chamber cap. CAUTION: The permeation chamber cap may be warm to touch.
16 Serial Port Communication The Dynacalibrator Model 230 can be monitored and controlled remotely by means of a serial port connection and a terminal emulation program such as HyperTerminal.® The unit is controlled by entering two-character commands, shown in the table below. Commands may be either upper case or lower case. Parameters enclosed in brackets ([ ]) are optional. Note that for enable/disable commands, the states indicated by an “*” are the defaults at power-up.
Serial Port Communication 17 2. Click “Cancel”. Since no modem is involved, this information is not necessary. The following screen will appear: 3. Click “OK”, which reveals the next screen: 4. Enter a name, such as “dyna230”, and select an icon to associate with the file. Then click “OK”. . 5.
Serial Port Communication 18 6. Select the appropriate COM port and click “OK” to bring up this screen: 7. Set the port parameters as indicated above, and click “OK”. 8. Now we are at the dyna230 HyperTerminal screen (below).
Serial Port Communication 19 Click “Settings” 9. On the dyna230 Properties screen (above), click “Settings” to bring up the screen below. Click “ASCII Setup...
Serial Port Communication 20 10. Click “ASCII Setup” and set the parameters as indicated below. Click “OK”. 11. When the screen returns to Dyna230 HyperTerminal (page 18, bottom illustration), click “File”, then “Save” to save this Dynacalibrator Model 230 communications setup. The following text will be displayed in the HyperTerminal window when communication is first established with the Dynacalibrator Model 230: Parameters recovered. Program checksums ok.
21 Analyzer Calibration After the power-up procedure has been completed and the chamber temperature and permeation device have reached equilibrium, the Dynacalibrator is ready to be connected to the analyzer being calibrated. Use a minimum length of tubing for the connection, and make sure none of the calibrator’s vents are blocked. If the Model 230 is to be used for a multipoint calibration and is equipped with the internal pump option: 1.
22 Advanced Theory of Operation Dynacalibrator operation is based on the principle of mixing a known mass flow of gas derived from a permeation device with a metered stream of clean carrier/ dilution gas to generate a precise concentration of span gas. User-selectable calibration gases originate from Dynacal permeation devices which are maintained at a user-selectable constant temperature within the Dynacalibrator’s permeation chamber.
Advanced Theory of Operation 23 this number to indicate the carrier flow (and the orifice used). Refer to page 4 for information about the available flow capacity ranges. Many of the plumbing components of the Dynacalibrator are rated for the different flow capacities of items such as for the main pump, the dilution flowmeter, etc. The following discussion disregards these differences and describes the basic flow through the unit in relative terms.
Advanced Theory of Operation 24 Configuration 2 Pump P1 (Figure 7) draws gas in through the supply inlet on the back panel and delivers it to accumulator AC1. The accumulator smooths out pressure pulses, with the back pressure regulator providing continuous pressure regulation to cover the dynamic range required. The output of the accumulator is passed through filter F1, and split by the tee into carrier and dilution streams.
Advanced Theory of Operation 25 ����������� ��� ������������� ��������� ���� ������ ����� ��������� �� ������� ������ ��� ������ ���� ������ �� �������� ������ ������� ������ ������� ����� ������ �� Figure 8: Diagram of configuration 3 ����������� ��� ������������� ��������� ���� ������ ����� �������� ������ ��������� �� ��� ������ ���� �������� ����� ������ �� ������� ������ �������� ������ ������ �� Figure 9: Diagram of configuration 4
Advanced Theory of Operation 26 Configuration 5 in this configuration (Figure 10), pump P1 draws gas in through the supply inlet on the back panel and delivers it to accumulator AC1. The accumulator smooths out pressure pulses, with the back pressure regulator providing continuous pressure regulation to cover the dynamic range required.
27 Electrical Description The basic wiring of the Model 230 is shown schematically in Figure 11. Dynacalibrators are powered from a benchtop style transformer on the rear panel. This is a switcher-style supply that allows a range of input voltage and frequency from 100 to 240 VAC at 50-60 Hz. The power supply steps the voltage down and regulates the output to 24 VDC. If the cord end type is inappropriate for your locale, please contact VICI for a replacement cord.
28 Maintenance Since Dynacalibrators are designed for and generally used in applications that require continuous service, a planned routine maintenance program is highly recommended. Routine maintenance consists of inspection, cleaning, calibration, and leak checks. The table below lists the recommended checks and maintenance frequencies for continuous and non-continuous use.
Maintenance 29 10. Rinse the fan screen and fan filter in clean water and blow dry with lowvelocity air. 11. Reinstall the fan, fan filter, fan screen brackets, and fan screen using the four screws, lockwashers, and hex nuts. 12. Replace the top cover of the unit and return it to service according to the procedures on page 13. Carrier Flow Rate Verification The carrier flow rate is maintained at a constant value through through the use of a control device.
Maintenance 30 Chamber Temperature Calibration Prior to shipment, the permeation chamber digital temperature control is calibrated against the temperature of the gas in the permeation chamber using an NIST-traceable PRT, (platinum resistance thermometer). The results of this calibration have been supplied with your instrument. At this point, it is helpful to give an overview of the total calibration process. A multiple point measurement is made with excursions to the extremes of range.
31 Troubleshooting If you intend to perform detailed troubleshooting on your Dynacalibrator, please first read the section entitled “Advanced Theory of Operation” which starts on page 22. The flow diagrams included there will provide significant help. Most gas flow problems can be isolated to a particular component using a lowpressure air source and a pressure gauge.
Troubleshooting 32 4. Isolate the leak by using a small quantity of leak detection fluid on each possible leak point in the suspect loop. Watch carefully for the bubbling or foaming effect that characterizes a leak. Most leaks that arise under internal pressures of 20 inches of water will be small. Because of this, be sure to watch carefully for a full 30 seconds before concluding that the point being tested does not leak. 5. Repeat steps 3 and 4 for each potential leak point in the suspect loop. 6.
Troubleshooting 33 7. Once a section of the loop has been determined to be leak free, go to the next fitting downstream of the point of the previous check and repeat the previous procedure starting at step 3 above. When the end of the loop has been reached by the previous sequential troubleshooting procedure, this check can be considered completed. For reference, the end of the loop is the point where, in the initial leak checking procedure, the Leak Checker gauge was placed. 8.
34 Model Number Breakdown ����� � � � ���������� ������������������������������������������� ��������������������������������������������������������� ���������������������������������������������������������� ����������������������������������������������������������������� ��������������������������������� � � ������������������������������������������������������� � � �������������������������������������������� ���������������������������� � � �������������������������������� � � �������������������
35 Appendix: Electronic Flow Control Option Technical Data for Mass Flow Controllers Specification Mass Controller Description Accuracy ± (0.8% of reading + 0.2% of full scale) At calibration conditions after tare High accuracy option ± (0.4% of reading + 0.2% of full scale) At calibration conditions after tare ± 0.2% Full scale Operating range 1/2% to 100% Full scale Turndown ratio 200:1 Repeatability Typical response time Standard conditions (STP) Operating temperature 100 25°C and 14.
Appendix: Electronic Flow Control Option 36 Front Panel Controls and Indicators
Appendix: Electronic Flow Control Option 37 Electrical Schematic Figure 13: Model 230 electrical schematic, Electronic Flow Control option
38 Warranty This Limited Warranty gives the Buyer specific legal rights, and a Buyer may also have other rights that vary from state to state. For a period of 90 calendar days from the date of shipment, VICI Metronics Inc. (hereinafter Seller) warrants the goods to be free from defect in material and workmanship to the original purchaser.
