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Thank you for your purchase. If you have any questions about operating it, or if something is not working as expected, please contact support: Apex Vacuum 222 Riverstone Drive Canton, Georgia 30114 United States of America Phone: (800) 331-2808 ApexVacuum.com Serial Number: Next Calibration (Month/Day) : Recalibrate your flow meter every year.
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Please contact your vendor or view the contact information on the device (see page 21) if you have any questions regarding the use or operation of this device. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Contents Quick Start Guide Getting Started Getting to Know Your Mass Flow Meter Connectors and Buttons The Flow Meter Display Status Messages Option: Charging Your Portable Flow Meter Mounting Filters Connecting The Gas Flow Meter Power and Signal Connections RS-232 / RS-485 Digital Input / Output Signal...
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Establishing Communication Polling Mode Taring Addressing All Units Collecting Flow Data Streaming Mode Using Gas Select and COMPOSER Troubleshooting Maintenance Engineering Units Flow Units Pressure Units Pinout M12 Connector Pinout 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Quick Start Guide Setup • Connect your flow meter. Ensure that flow through your device will be in the same direction as the arrow on the flow body (usually left to right). • Tare your flow meter. Before you connect the flow meter, ensure that no gas is flowing through the device and select TARE FLOW from the Main Display.
Getting to Know Your Mass Flow Meter Connectors and Buttons The drawings below represent typical configurations of a standard mass flow meter and a standard battery-powered mass flow meter. Your flow meter’s appearance and connections may differ. Meters Battery-Powered Meters Micro-USB (data &...
The Flow Meter Display The figure below identifies the various features of the flow meter display. Press the bottom central button to toggle the backlight on and off. Engineering units are used by the meter in its serial communications and calculations.
0 – 5% LPM SLPM MENU Charging Indicator Warning: The safe charging temperature range is 0–45°C (32–113°F). If internal sensors detect temperatures outside of this range, the battery will not charge. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Mounting No straight runs of pipe are required upstream or downstream of the meter. For most flow meters, you can mount or hold the meter in any position, because it is internally compensated for any changes to its orientation during use. The flow meter is also minimally affected by vibrations, so it can on top of a vibrating instrument with little impact to measurement accuracy.
Outlet Inlet Connection Connection Flow Direction Indicator Max Common Max Differential Model Mode Pressure Pressure Standard meters 175 psia 75 psid Low-pressure-drop meters 80 psia 10 psid 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Power and Signal Connections Power can be supplied to your meter through either the power jack or the multi-pin connector on top of your device. Female Connector: Device Male Connector: Cable ✓ Meter power jacks require a 9–24 Vdc power supply with a 2.1 mm female positive center plug capable of supplying at least 50 mA.
9 Pin Serial Connection 8 Pin Mini-DIN Connection Function Function Ground Ground Transmit Receive Receive Transmit DB9 connections Female Connector Male Connector See also the M12 connector pinout on page 56. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Connect to tare Using Ground to Tare You can tare your mass flow meter remotely by momentarily grounding Pin 4, as shown below. When the switch is closed, the device will tare, and resume operation once the switch has been released.
70 mA at 24 Vdc Note: Color displays will require an additional 40 mA when using a 12 Vdc power supply. All other device specifications from your device’s specification sheet remain in effect. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Navigation and Customization Flow Meter Main Menu Menu Outline Accessible from MENU on the Main Display • About (page • Device information • Device state • Manufacturer information • Tares (page 20) • Tare pressure • Tare flow ABOUT TARES •...
Push a second time to select mass flow engineering units and switch between standardized, normalized, and true mass flow. TOTAL accesses flow totalizer (optional) (page 19). MENU enters the Menu system (page 20). 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Choosing Engineering Units Press the button adjacent to any of the four DOWN measurement parameters twice to enter its >Show abs pressure unit selection menu. You can change units in S how gauge pressure two ways: S how baro pressure S et button eng units S et device eng units Button engineering units (page 18) alter the display only, not the serial data: CANCEL...
The time counter has a maximum value of 9999:59:59 (h:m:s) (416 days, 16 hours). If flow is still being totalized at that point, the timer freezes, regardless of totalized flow settings. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Menu You can enter the menu system by pressing ABOUT TARES MENU button from the Main Display. • ABOUT (page 21), TARES (below), BASIC CONFIG (page 22), and ADV SETUP (page 28) enter their respective menus. BASIC ADV CONFIG SETUP MAIN •...
Device State Screen DEVICE STATE PAGE Within the screen, press to advance to the next page of register values. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Basic Configuration Menu The Basic Configuration Menu contains options for choosing the gas calibration, device engineering units and STP/NTP mass flow references. → Menu Basic Configuration • enters Gas Select and COMPOSER menus (page 23). The currently-selected gas is displayed below the button.
DOWN PAGE UP DOWN PAGE Recent >Ar Argon >Standard CH4 Methane COMPOSER User Mixes CO Carbon Monoxide Bioreactor CO2 Carbon Dioxide Breathing C2H6 Ethane Chromatography H2 Hydrogen Fuel He Helium Laser BACK SET BACK SELECT Gas Listing Menu Category Listing Menu 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Gas List Your device has data for the following gases (see page 41 for Gas Select index numbers): Pure Non-Corrosive Gases Stack/Flue Gas Mixes Acetylene (C2H2) 2.5% O2, 10.8% CO2, 85.7% N2, 1% Ar Air (Clean Dry) 2.9% O2, 14% CO2, 82.1% N2, 1% Ar Argon (Ar) 3.7% O2, 15% CO2, 80.3% N2, 1% Ar Isobutane (i-C4H10)
Main Display (page 17). Otherwise, CANCEL will return to the Gas Select Menu. UP DOWN PAGE >Add Mix: 17 Free MyGas1 User Mix 255 MyGas1 User Mix 254 MyGas1 User Mix 253 Delete Mix C ANCEL SET A list of existing mixes 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Navigating and Customizing Your Flow Meter Creating Gas Compositions in COMPOSER UP DOWN SELECT EDIT ADD GAS GAS UP DOWN EDIT % LETTER NAME OPTNS COMPOSER Mix: MyGas 1 71.35% CH4 Methane COMPOSER Mix name: 71.35% CH4 Methane 3.00% C2H6 Ethane 1.00% C3H8 Propane 3.00% C2H6 Ethane MyGas1 19.25% N2 1.00% C3H8 Propane ^----- 19.25% N2 94.60% Total 94.60% Total BACK/ CHANGE CANCEL CASE SET CANCEL...
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2. Select the value you wish to modify, and press CHANGE 3. At the confirmation screen, press to confirm your change. STP/NTP Caution: Changes to references will alter your mass flow readings. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Advanced Setup The Advanced Setup Menu lets you configure the display, zero band, averaging (for flow and pressure), and serial communications. → Menu Advanced Setup • SENSOR SETUP enters the Sensor Setup menu (page 29). SENSOR COMM DISP SETUP SETUP SETUP •...
UP DOWN SELECT DIGIT Display (page 17). Avg Time Const: msec ✓ Note: Deadband settings do not affect the values reported in the serial data. BACK/ CANCEL CLEAR SET The Averaging Menu. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Configuring Serial Communications You can operate the flow meter remotely via its data connection for easy streaming and logging of all data. Before connecting the flow meter to a computer, ensure that it is ready to UNIT ID BAUD 19200 communicate with your PC by checking the COMM SETUP options in the menu.
Feeds” box is not checked, and “Echo Typed Characters Locally” box and “Append Line Feeds to Incoming Lines” boxes are checked. Other settings are normally OK in the default position. 6. Save the settings, close HyperTerminal® and reopen it. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Configuring PuTTy 1. Download PuTTY from putty.org and run the installer. 2. Open PuTTY; it will start on the Configuration screen. 3. Click on the Terminal category. The changes we make here will cause PuTTY to act like a normal serial terminal, such that pressing enter will move the cursor to the next line and both what you type and what gets returned stay on the screen: •...
Unit ID is not present in streaming mode. A +13.5424 +24.5782 +16.6670 +15.4443 N2 Absolute Volumetric Pressure Flow Standard Temperature Unit ID (Mass) Flow 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Single spaces separate each parameter, and each value is displayed in the chosen device engineering units, which may differ from the engineering units visible on the flow meter display (see page 18). You can query the engineering units of the instant data frame by typing: [unit ID] ??d* Query live data info:...
MyGas2 0 0 93 2 3 5 1 12 2 8 1 A 253 AIR 93.00% CH4 3.00% C2H6 1.00% C3H8 2.00% N2 1.00% Response: ✓ Note: The sum of all gas constituent percentages must equal 100.00%. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
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Quick Command Guide ✓ Note: Serial commands are not case-sensitive. For simplicity, we assume that the unit ID of the flow meter is A in the listing that follows. Change unit ID: a [desired unit ID] Tare flow: ...
Action: Annual recalibrations are recommended. Check your flow meter’s → → MENU ABOUT DEVICE INFO last calibration date by selecting If it is time to recalibrate, request a recalibration (page 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
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Issue: I dropped my meter. Is it OK? Do I need to recalibrate? Action: If it turns on and appears to respond normally, then it is prob- ably OK. It may or may not need a recalibration. Compare it against a known-good flow standard. If it checks out, keep using it, but tell support about the drop at your next annual recalibration so we can check it out for you.
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4. Make sure the COM number matches the one your soft- ware is using to connect to the flow meter (page 30). Still experiencing issues? Issue: None of the above helped. Action: Contact support. See the contact information on page 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Maintenance Cleaning Your flow meter requires no periodic cleaning, provided that it has been flowing clean, dry gas. If necessary, the outside of the device can be cleaned with a soft dry cloth. If you suspect that debris or other foreign material has entered your device, do not take apart the flow body to clean it, as this will negate its NIST-traceable calibration.
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140 C-15 15% CO2, 85% Ar Nitric Oxide2 141 C-20 20% CO2, 80% Ar Nitrogen Trifluoride2 142 C-50 50% CO2, 50% Ar Ammonia2 143 He-50 50% He, 50% Ar Chlorine2 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
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Short Long Short Long Name Name Name Name 144 He-90 90% He, 10% Ar 181 LG-7 7% CO2, 14% N2, 79% He 145 Bio5M 5% CH4, 95% CO2 182 LG-9 9% CO2, 15% N2, 76% He 146 Bio10M 10% CH4, 90% CO2 183 HeNe-9 9% Ne, 91% He 184 LG-9.4 9.4% CO2, 19.25% N2, 71.35% He 147 Bio15M 15% CH4, 85% CO2...
SCFD cubic foot per day milliseconds 1000 cubic feet seconds kSCFM per minute minutes setpoint count, count count count hour hours 0–64000 percent of full scale days 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
Pressure Units Absolute or Barometric Gauge Notes pascal hPaA hPaG hectopascal kPaA kPaG kilopascal MPaA MPaG megapascal mbarA mbarG millibar barA barG g∕cm2A g∕cm2G gram force per square centimeter kg∕cmA kg∕cmG kilogram force per square centimeter PSIA PSIG pound force per square inch PSFA PSFG pound force per square foot...
Due to variance in cable manufacturing, please identify proper wiring/pins via continuity check & color when using blunt cut multi-strand cables. See also the 8-pin Mini-DIN pinout on page 11. 2020.07.24 • REV. 2 • MASS FLOW METER OPERATING MANUAL...
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Main Menu Quick Guide PSIA ¤C TARE Accessible from MENU on the Main Display +13.49 +26.03 FLOW • About (page ¤C +26.03 • Device information • Device state Flow Temp • Manufacturer information +0.0000 +0.0000 TOTAL/ LPM SLPM MENU • Tares (page 20) •...
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