Agilent Technologies G6691A, Operating Instructions Manual

Page 1: ...Agilent Technologies Agilent G6691A ADM Flow Meter Operating Instructions ...

Page 2: ... consequential damages in connection with the furnish ing use or performance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that con flict with these terms the warranty terms in the sepa rate agreement shall control Technology Licenses The hardware and or software descr...

Page 3: ...ing Modes 10 Making a Flow Measurement 12 Storing Flow Measurements 13 Reading and Setting a Split Ratio 15 About Flow Measurements 16 Info Mode 17 USB Interface 21 Warning and Error Indications 23 Replacing the Cartridge 24 Replacing Batteries 27 Upgrading the Firmware Retrieving Certificate of Calibration 30 A Note About Back Pressure 30 Technical Support 30 Product Specifications 31 ...

Page 4: ...inframe and a Flow Meter Cartridge The Flow Meter Mainframe contains the display keypad batteries and microprocessor while the Flow Meter Cartridge contains all of the hardware used to make a flow measurement Flow Meter Cartridges are individu ally factory calibrated and can easily be replaced with a new cartridge without returning the Flow Meter to Agilent This eliminates the hassle and downtime ...

Page 5: ...d in the packaging are the following items Table 1 Packing List 1 ADM Flow Meter Mainframe 1 ADM Flow Meter Cartridge 1 USB Cable 1 Screwdriver Phillips head 3 AA Alkaline Batteries 1 Calibration Certificate 1 Declaration of Conformance 1 Quick Start Guide ...

Page 6: ... the entire meter back to the fac tory to maintain its calibration The cartridge calibration is valid for a period of one year from its first use A new calibrated cartridge can be ordered in advance and then installed when necessary When the flow meter is powered on with a new cartridge installed the current date is written to the cartridge s memory based on the mainframe s internal clock Each tim...

Page 7: ... adjusts the resolution of the display in response to various gas flow ranges as follows When the battery strength indicator shows that the battery strength is low replace the batteries See Replacing Batteries on page 27 NOTE Using the USB port to supply power does not recharge the installed batteries NOTE The ADM Flow Meter can also be powered by rechargeable batter ies but the battery indicator ...

Page 8: ... Operating Instructions Using the Flow Meter Stand The flip down wire stand will give you a better viewing angle when the ADM Flow Meter is placed above bench level Pull the stand down until it is in the locked posi tion Stand ...

Page 9: ... button Select Button The Select button is used to access additional functionality within the operating modes This includes storing flow measurements setting a reference value for the Split Mode and changing the settings Switching the ADM Flow Meter On and Off With the ADM Flow Meter powered off briefly press and release the Power Mode button to turn the unit on The display will flash the Agilent ...

Page 10: ... played in mL min Mass flow mode In this mode the volumetric flow rate is corrected taking into account the current atmospheric pressure and ambient temperature The flow rate is displayed in sccm standard cubic centimeters per minute referenced to 1 atmosphere of pressure and 0 C Split mode In this mode you can store a flow measurement as a reference value and then compare subsequent flow measurem...

Page 11: ...ons 11 Info mode Info mode provides details on the flow meter and the currently installed cartridge including the calibration expiration date In addition Info Mode allows you to set the display brightness and control the Auto off functionality ...

Page 12: ...he flexible tubing to the gas source to be measured 3 Wait for the reading to stabilize 1 2 seconds and then observe the reading CAUTION Make sure that the flow to be measured is within the range of the flow meter Over ranging the flow meter can damage the transducer NOTE Always turn the flow meter on before connecting it to a flow source NOTE Low flows less than 1 mL min may take up to 5 seconds ...

Page 13: ...ss flow mode displayed briefly press the Select button The measurement storage screen appears Any previously stored values are displayed on the screen If the cartridge is unused the values will be listed as nan not a number 2 Press and hold the Select button to clear the previously stored values 3 Press the Select button to store a value to the first available slot 4 Repeat step 2 to store additio...

Page 14: ...14 Agilent ADM Flow Meter Operating Instructions To clear the stored values Hold down the Select button All of the stored values are cleared from memory ...

Page 15: ...detector gases 3 Connect the flexible tubing to the GC column gas flow 4 Wait for the reading to stabilize 1 2 seconds 5 Briefly press the Select button The current reading is stored as the reference value The ratio value is displayed as 1 1 6 Disconnect the flexible tubing from the GC column flow and then connect it to the split vent or the gas flow that you want to compare The display shows the ...

Page 16: ...flow meters add water vapor to the gas being measured which introduces error into the flow rate measurement Even when accurately calibrated soap bubble meters typically read slightly higher than the ADM Flow Meter The higher readings arise from relatively high concen trations of water vapor present in the soap bubble apparatus At room temperature water vapor can raise readings by nearly 4 This unf...

Page 17: ...he Select button to cycle through the available screens The first screen displays information about the currently installed cartridge This includes the date that the cartridge was first used and the date that the cartridge is due to be replaced In addition a graphic representation of the remaining life of the installed cartridge is displayed See Replacing the Cartridge on page 24 for details on re...

Page 18: ...e selected value The screen brightness changes based on the selected value 3 Press the Select button to cycle through the available screens until you are returned to the Info mode screen with the cartridge statistics displayed Auto off When the unit is turned on the unit defaults to Auto off This means that every time the unit is activated a power off cycle begins lasting 10 minutes To disable thi...

Page 19: ... screen is displayed Error number definitions are as follows Error number Type Description Troubleshooting 0001 Error No calibration informa tion Contact Agilent Technical Support 0002 Error Flow meter is not verified Contact Agilent Technical Support 0003 Error Pressure temperature sensor failure Contact Agilent Technical Support 0004 Error No cartridge detected Install a valid cartridge 0005 War...

Page 20: ...ing Cartridge calibration expired Install a new cartridge 0009 Warning RTC real time clock backup battery low Contact Agilent Technical Support 0010 Warning Out of operating tempera ture range condition 0 45 C Operate the flow meter within the acceptable tem perature range 0011 Warning Out of operating atmo spheric pressure range Operate the flow meter within the acceptable atmo spheric pressure r...

Page 21: ... meter can be collected by connecting the USB port to your computer with the included USB cable The ADM Flow Meter USB driver will be needed for the instrument to communicate with your PC For details please visit http www agilent com chem ADMflowmeter to download the driver and view the Connecting your Flow Meter to your PC instrument sheet NOTE Using the USB port to supply power does not recharge...

Page 22: ...een is replaced by a USB connector icon When the ADM Flow Meter is connected to PC software the buttons on the flow meter are disabled This is indicated by an icon to the left of USB icon on the screen NOTE When using the data acquisition capability of the ADM Flow Meter you should disable the auto off feature See Auto off on page 18 ...

Page 23: ...ble conditions when the calibration is expired when the RTC bat tery is low and so on See Errors Warnings on page 19 Error indication When a hardware fault occurs an error icon is displayed on the screen This exam ple shows when a cartridge is not detected in the flow meter See Errors Warnings on page 19 Low battery indicator When the batteries need to be replaced a low battery indication is displ...

Page 24: ... order a replacement cartridge order P N G6692A The replacement cartridge includes replacement tubing Figure 1 Power off Figure 2 Remove old cartridge Press and hold the Power Mode button for 3 seconds Loosen two captive screws completely Lift cartridge out of flow meter body ...

Page 25: ...lent ADM Flow Meter Operating Instructions 25 Figure 3 Install replacement cartridge Figure 4 Install new flexible tubing Insert cartridge into flow meter body Tighten two cap tive screws hand tight Tubing ...

Page 26: ...26 Agilent ADM Flow Meter Operating Instructions Figure 5 Power on Briefly press the Power Mode button ...

Page 27: ...27 Replacing Batteries To replace the batteries do the following Figure 6 Power off Figure 7 Remove battery cover Press and hold the Power Mode button for 3 seconds Press in on the grooved thumb pad and slide the battery cover off of the flow meter ...

Page 28: ...DM Flow Meter Operating Instructions Figure 8 Replace batteries Figure 9 Install battery cover Remove and replace AA batteries Position battery cover over batteries and slide onto flow meter until it locks in place ...

Page 29: ...Agilent ADM Flow Meter Operating Instructions 29 Figure 10 Power on Briefly press the Power Mode button ...

Page 30: ... is calibrated with the standard flexible tubing supplied with the meter at the time of purchase Replacement tubes should be of equal ID and length Be aware that using tubing that increases or decreases the total volume of gas in the tubing will affect accuracy Tubing of greater volume will result in slightly lower flow readings This is because the transducer creates an ever so small back pressure...

Page 31: ...M Flow Meter specifications Flow range 0 to 750 mL min auto ranging Accuracy When verified at ambient temperature of 20 C to 24 C 0 500 mL min 2 of reading or 0 2 mL min whichever is greater 501 750 mL min 3 of reading Tubing temperature range 62 C to 110 C Operating temperature range 0 C to 45 C Storage Temperature range Damage to the instrument may occur if it is exposed to temperatures greater ...

Page 32: ...ent Technologies Safety and Regulatory Certification Conforms to the following regulations on Electromagnetic Compatibility EMC and Radio Frequency Interference RFI CISPR 11 EN 55011 Group 1 Class A IEC EN 61326 Designed and manufactured under a quality system registered to ISO 9001 ...