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16 Series Mass and Volumetric Flow Meters
Precision Gas Flow Meter
Operating Manual
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Notice: The manufacturer reserves the right to make any changes and improvements to the products described in this manual at any time and without notice. This manual is copyrighted. This document may not, in whole or in part, be copied, reproduced, translated, or converted to any electronic medium or machine readable form, for commercialpurposes, without prior written consentfrom the copyright holder . Note: Although we pro
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Table of Contents Page Installation 5 Plumbing 5 Mounting 5 Application 5 Power and Signal Connections 6 RS-232 Digital Output Signal 7 Standard Voltage (0-5 Vdc) Output Signal 7 Optional 0-10 Vdc Output Signal 7 Optional Current (4-20 mA) Output Signal 7 Optional 2nd Analog Output Signal 7 M Series Mass Flow Meter Operation 10 MainMode 10 Tare 10 Gas Absolute Pr
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Table of Contents Page Collecting Data 19 Data Format 19 Sending a Simple Script File to HyperTerminal® 20 OperatingPrinciple 21 Gas Viscosity 21 Other Gases 22 Volume Flow vs. Mass Flow 23 Volumetric Flow and Mass Flow Conversion 23 Compressibility 23 Standard Gas Data Tables 24 Gas Viscosities and Densities Table 25 Volumetric Flow Meters Under Pressure 26 Troubleshooting 27 Maintenance and Recalibration 28 Warranty Technical Specifications 29 Di
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Thank you for purchasing an Apex Gas Flow Meter. Please take the time to find and read the information contained in this manual. This will help to ensure that you get the best possible service from your instrument. This manual covers thefollowing Apex instruments: M Series 16 Bit Mass Gas Flow Meters V Series 16 Bit Volumetric Gas Flow Meters Installation Plumbing All M or V Series Gas Flow Meters are equipped with female inlet and outlet port connections. Because th
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Power and Signal Connections Power can be supplied to your M or V Series meter through either the power jack or the 8 pin Mini-DIN connector as shown in Figure 1. An AC to DC adapter which converts line AC power to DC voltage between 7 and 30 volts is required to use the power jack. The adapter current should be at least 100mA. The power jack accepts 2.1 mm female power plugs with positive centers. Cables and AC/DC adaptors may purchased from Apex (see Accessories page 42)
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RS-232 Digital Output Signal If you will be using the RS-232 output signal, it is necessary to connect the RS-232 Output Signal (Pin 5), the RS-232 Input Signal (Pin 3), and Ground (Pin 8) to your computer serial port as shown in Figure 2. Adapter cables are available from the manufacturer or they can be constructed in the field with parts from an electronics supply house. In Figure 2, note that the diagrams represent the “port” side of the connections, i.e. the connector
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DB-9 Serial Port 8P inM ini-DIN Port 2 1 2 1 2 3 4 5 3 4 5 4 5 6 7 8 9 6 7 8 6 7 8 5----------Ground--------------------------------------Ground----------8 3----------Transmit------------------------------------Receive---------3 2----------Receive-------------------------------------Transmit--------5 Figure 2. Mini-DIN to DB-9 Connection for RS-232 Signals Purple (Ground) Red Yellow Unit A Purple Red Yellow Unit B Purple Red Yellow Unit C 3 2 4 1 5 6 9 7 8 Female Serial Cable Front Figure
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An optional industrial connector isalso available: Pin Function Cable Color 6 1 Red Power In ( + ) 1 2 RS-232 Output Blue 5 3 RS-232 Input Signal White 4 Remote Tare (Ground to Tare) Green 2 5 Ground (commom for power, Black 4 3 communications and signals) 6 Signal Out (Voltage or Current as ordered) Brown Figure 4. Optional Industrial Connector Note: The above pin-out is applicable to all the flow meters and controllers ordered with the industrial connector. The availa
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M Series Mass Flow Meter Operation The M Series Mass Flow Meter provides a multitude of useful flow data in one simple, rugged device. The M Series can have several display “modes” depending on how the device is ordered. All M Series meters have a default Main Mode, Select Menu Mode, a Gas Select Mode (the Gas Select Mode may not be available on meters calibrated for a custom gas or blend), a Communication Select Mode and a Manufacturer Data Mode. (In addition, your device may have been orde
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Gas Absolute Pressure: The M Series flow meters utilize an absolute pressure sensor to measure the line pressure of the gas flow being monitored. This sensor references hard vacuum and accurately reads line pressure both above and below local atmospheric pressure. This parameter is located in the upper left corner of the display under the dynamic label “PSIA”. This parameter can be moved to the primary display by pushing the button just above the dynamic label (top left). The e
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Select Menu Mode Pushing “Mode” once will bring up the “Select Menu” display. Push the button nearest your selection to go to the corresponding display. Push “Mode” again to return to the Main Mode display. (Note: If your meter was ordered with Totalizing Mode option (page 36), pushing the “Mode” button once will bring up the “Totalizing Mode” display. Pushing “Mode” a second time will bring up the “Select Menu” display.) Gas Select SELECT MENU Comm. Mfg. RS-232 Data Menu Figu
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Communication Select Mode The Communication Select mode is accessed by pressing the button below “Comm. RS-232” on the Select Menu display. The screen will appear as shown in Figure 9 below. Select Main > Unit ID (A).....A Baud (19200)....19200 Data Rate......Fast Comm. UP DOWN RS-232 Figure 9. Communication Select Display Unit ID – Valid unit identifiers are letters A-Z and @ (see Note below). This identifier allows the user to assign a unique address to each devi
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Manufacturer Data “Manufacturer Data” is accessed by pressing the “Mfg. Data” button on the Select Menu display (Figure 7). The “Mfg 1” display shows the name and telephone number of the manufacturer. The“Mfg 2” display shows important information about your flow meter including the model number, serial number, and date ofmanufacture. Main Apex Ph 404-474-3115 Mfg 1 Main Model M-10SLPM-D Serial No 27117 Date Mfg.11/07/2005 . Calibrated By DL Software GP07R23 Mfg 2 Figure 10. Manufacturer
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V Series Volumetric Flow Meter Operation The V Series can have several display “modes” depending on how the device is ordered. All V Series meters have a default Main Mode,a Select Menu Mode, a Gas Select Mode (the Gas Select Mode may not be available on meters calibrated for a custom gas or blend), a Communication Select Mode and a Manufacturer Data Mode. (In addition, your device may have been ordered with a Totaliizing Mode, page 36.) The device defaults to Main Mode as soon as power is a
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Flashing Error Message: Our volumetric flow meters and controllers display an error message (VOV = volumetric overrange) when a measured parameter exceeds the range of the sensors in the device. When any item flashes on the display, the flashing parameter is not accurate. Reducing the value of the flashing parameter to within specified limits will return the unit to normal operation and accuracy. Select Menu Mode Pushing “Mode” once will bring up the “Select Menu” display (Figure 7, page 12).
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to the screen, hit the “Enter” key several times to clear any extraneous information. Type “*@=@” followed by “Enter” (or using the RS-232 communcation select menu, select @ as identifier and exit the screen). If data still does not appear, check all the connections and com port assignments. Changing From Streaming to Polling Mode: When the meter is in the Streaming Mode, the screen is updated approximately 10-60 times per second (depending on the amount of data on each line) so that the use
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Gas Select – The selected gas can be changed via RS-232 input. To change the selected gas, enter the following commands: In Streaming Mode: $$# In Polling Mode: Address$$# (e.g. B$$#) Where # is the number of the gas selected from the table below. Note that this also corresponds to the gas select menu on the flow meter display: # GAS 0 Air Air 1 Argon Ar 2 Methane CH4 3 Carbon Monoxide CO 4 Carbon Dioxide CO2 5 Ethane C2H6 6 Hydrogen H2 7 Helium
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Collecting Data: The RS-232 output updates to the screen many times per second. Very short-term events can be captured simply by disconnecting (there are two telephone symbol icons at the top of the HyperTerminal® screen for disconnecting and connecting) immediately after the event in question. The scroll bar can be driven up to the event and all of the data associated with the event can be selected, copied, and pasted into Microsoft® Excel® or other spreadsheet program as
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Sending a Simple Script File to HyperTerminal® It is sometimes desirable to capture data for an extended period of time. Standard streaming mode information is useful for short term events, however, when capturing data for an extended period of time, the amount of data and thus the file size can become too large very quickly. Without any special programming skills, the user can use HyperTerminal and a text editing program such as Microsoft Word to capture text at user defined
