The ADM 1000, ADM 2000, and ADM 3000 are very sturdy meters that have a wide variety of applications. Because the meters are not dependant on a specific gas, we have inquires as to what gases are permitted.
Because the meter vents the gas it’s measuring out of the bottom of the meter case, flammable gases are not recommended. Also gases with any liquid content will collect in the transducer reducing volume causing incorrect readings and letting moisture collect on the motherboard. The same holds true for corrosive gases, transducer and solenoid damage may occur.
We see very few meters that come in for calibration that have this type of damage; however if it does happen the meter is repairable.
To view the ADM line of flowmeters at Agilent’s website use this link http://www.chem.agilent.com/en-US/products/consumables/gasmanagement/adm1000flowmeter/pages/default.aspx
For questions on annual calibration, repairs, and other inquires on meter operation, you may contact California Integration Coordinators, Inc. at www.cic-inc.com or call 530-626-6168 and ask for the Calibration Lab.
Tuesday, November 24, 2009
Wednesday, November 18, 2009
My ADM1000 always reads zero
One question that occasionally comes up is, why does my ADM1000 always read zero? The ADM1000, ADM2000, and ADM3000 all use a transducer to convert the gas flow entering the meter to an analog value. After that it is converted to a digital value for the microprocessor to act upon.
Because it is a positive displacement type meter, meaning it traps a sample of the gas flow in a sealed chamber for a few milliseconds, too high of a flow can cause the transducer to become damaged, still operating, but the reading is generally wildly off, or a major overflow will crack the casing of the transducer rendering it useless. When this happens, the meter will only read zero as there is no signal from the transducer.
The transducer is a reliable yet delicate device; this is because of the meters ability to measure a flow less than 1 mL. If the flow under test is unknown, turn down the regulator or flow controller on the gas supply before connecting the ADM, then connect the meter to the port and set the regulator to the desired flow, as long as it is 1000 mL or less. Mild overflows typically don’t damage the meter, but better safe than sorry.
Having a new transducer installed isn’t very costly; however the meter will have to be re-calibrated.
To view the ADM1000 flowmeter at Agilent’s website use this link http://www.chem.agilent.com/en-US/products/consumables/gasmanagement/adm1000flowmeter/pages/default.aspx
For questions on annual calibration, repairs, and other questions on meter operation, you may contact California Integration Coordinators, Inc. at www.cic-inc.com or call 530-626-6168 and ask for the Calibration Lab.
Because it is a positive displacement type meter, meaning it traps a sample of the gas flow in a sealed chamber for a few milliseconds, too high of a flow can cause the transducer to become damaged, still operating, but the reading is generally wildly off, or a major overflow will crack the casing of the transducer rendering it useless. When this happens, the meter will only read zero as there is no signal from the transducer.
The transducer is a reliable yet delicate device; this is because of the meters ability to measure a flow less than 1 mL. If the flow under test is unknown, turn down the regulator or flow controller on the gas supply before connecting the ADM, then connect the meter to the port and set the regulator to the desired flow, as long as it is 1000 mL or less. Mild overflows typically don’t damage the meter, but better safe than sorry.
Having a new transducer installed isn’t very costly; however the meter will have to be re-calibrated.
To view the ADM1000 flowmeter at Agilent’s website use this link http://www.chem.agilent.com/en-US/products/consumables/gasmanagement/adm1000flowmeter/pages/default.aspx
For questions on annual calibration, repairs, and other questions on meter operation, you may contact California Integration Coordinators, Inc. at www.cic-inc.com or call 530-626-6168 and ask for the Calibration Lab.
Wednesday, November 11, 2009
Why won’t my meter read zero when no flow is present?
The ADM1000 is probably one of the most widespread gas flowmeters in use today. It features a measurement range of 0.5 to 1000 mL/min for all noncorrosive and non-flammable gases used in many industries. It features a very quick warm-up time and is a volumetric type meter, so it is gas independent.
California Integration Coordinators, Inc. is the factory authorized calibration and repair center for the ADM1000, ADM2000, and the ADM3000. Visit our website to review all of the services we offer for the ADM Flowmeter line. For recalibration or repair, use the Work Order Form prior to shipment of your unit https://flowmeter.cic-inc.com/cgi-bin/form.pl
The most often asked question about the meter is, why my meter won’t read zero when no flow is present or it is not connected to anything. Because the meter’s range extends below 1 mL/min, any air or gas movement near an unconnected sample tube will be read. For the meter to display a zero reading the sample tube must be plugged and it needs to be in a relatively quiet environment.
To view the ADM1000 flowmeter at Agilent’s website use this link http://www.chem.agilent.com/en-US/products/consumables/gasmanagement/adm1000flowmeter/pages/default.aspx
For questions on annual calibration, repairs, and other questions on meter operation, you may contact California Integration Coordinators, Inc. at http://www.cic-inc.com/ or call 530-626-6168 and ask for the Calibration Lab.
California Integration Coordinators, Inc. is the factory authorized calibration and repair center for the ADM1000, ADM2000, and the ADM3000. Visit our website to review all of the services we offer for the ADM Flowmeter line. For recalibration or repair, use the Work Order Form prior to shipment of your unit https://flowmeter.cic-inc.com/cgi-bin/form.pl
The most often asked question about the meter is, why my meter won’t read zero when no flow is present or it is not connected to anything. Because the meter’s range extends below 1 mL/min, any air or gas movement near an unconnected sample tube will be read. For the meter to display a zero reading the sample tube must be plugged and it needs to be in a relatively quiet environment.
To view the ADM1000 flowmeter at Agilent’s website use this link http://www.chem.agilent.com/en-US/products/consumables/gasmanagement/adm1000flowmeter/pages/default.aspx
For questions on annual calibration, repairs, and other questions on meter operation, you may contact California Integration Coordinators, Inc. at http://www.cic-inc.com/ or call 530-626-6168 and ask for the Calibration Lab.
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