Gas Flow Bench User Manual - DryCal
Contents
1. Mesa Labs 10 Park Place Butler NJ USA 07405 Phone 973 492 8400 Toll Free 800 663 4977 Fax 303 484 4992 Email biosdrycal mesalabs com Web www drycal com 2014 Mesa Labs MK01 34 Rev E2. Step 5 Turn needle valve clockwise to zero flow Step 6 Open the flow bench regulator to increase pressure to 80psi or equal to inlet pressure Step 7 Decrease flow bench regulator completely Step 8 Observe the pressure gauge on flow bench Any drop in pressure represents a leak upstream of any closed valve Retighten fittings if needed and repeat Step 9 Ensure no leakage after 5 minutes and continue Step 10 Open needle valve to bleed off pressure Step 11 Close flow bench regulator Step 12 Put unions and leak test plugs on A B valve tubing and tighten Step 13 Center 1 4 A B valve selector to open both ports to pres sure Step 14 Open the flow bench regulator to increase pressure to 80psi or equal to inlet pressure then decrease flow bench regulator completely Step 15 Observe the pressure gauge Any pressure drop represents a leak between the outlet of the needle valve and the ends of the 1 4 A B valve tubing Retighten fittings if needed and repeat Step 16 Close 1 4 valve and open both 12 valves Step 17 Install leak test caps on 34 A B valve and tighten Step 18 Center 34 A B valve selector to open both ports to pres sure Step 19 Open the flow bench regulator to increase pressure to 80psi or equal to inlet pressure then decrease flow bench regulator completely Step 20 Observe the pressure gauge Any pressure drop represents a leak between the outlet
3. open to atmosphere Quick connect to the gas flow source Gas pressure should be approximately 80 to 100 psi Procedure Step 1 Turn on the Met Lab unit Through its set up menu set the flow reading type to STD and Temp Correction Factor to rated temperature of the rotameter Step 2 Through the set up menu enter the calculated flow correction factor FCF as a Sensor Factor in your Met Lab unit if the actual gas temperature differs to the rated tem perature of rotameter Otherwise set its value to default 1 00 Step 3 Close the needle valve open the on off valve and set the gas pressure by adjusting the pressure regulator to 30 psi above the rotameter s rated pressure Step 4 If the rotameter contains a built in needle valve open its needle valve fully for unrestricted gas flow Step 5 Open up the needle valve and adjust the back pressure regulator until the pressure gauge before the back pressure regulator indicates the rotameter s rated pressure Step 6 Set the variable area flow meter s flow at desired level using the needle valve The flow rate is indicated by the point on the printed scale where the float s center stabilizes Step 7 If you are not using a direct scale rotameter record the reflected flow rate reading from the reference flow table against the floating point Step 8 Press Measure or Read on the Bios DryCal unit and begin taking readings Step 9 Det
4. comparison to your Met Lab Accuracy full scale Met Lab measurement MFC reading 100 MFC full scale Variable Area Gas Flow Meter Calibration Procedure Using Mesa Met Lab Series Primary Piston Prover Introduction The flow measurement professional is responsible for calibrating and or verifying the accuracy of various flow measurement devices such as variable area gas flow meters variable area flow meters This costly time consuming process typically involves sending variable area meters out for calibration or verifying them in house As the leader in primary gas flow measurement Mesa has developed a simple calibration procedure that combines the precision and high speed of our Met Lab Series of primary piston provers with carefully selected instruments and gauges to enable accurate calibration of variable area flow meters Flow Corrections Each variable area flow meter is designed to operate under a certain set of conditions which include the temperature pres sure and the type of gas Usually these conditions are documented directly on the tube enclosure of the variable area flow meter with the flow rate scales referenced in mm millimeter A reference table is provided to enable you to match the millimeter readings against the equivalent flow rates at the specified standard temperature and pressure Otherwise direct scale variable area flow meters indicate the flow rates directly on the tube enclosure When calibr
5. the outlet of the inlet valve and the inlet of the needle valve Retighten fittings if needed and repeat Step 9 Ensure no leakage after 5 minutes and continue Step 10 Open needle valve to bleed off pressure Step 11 Close flow bench regulator Step 12 Put unions and leak test plugs on A B valve tubing and tighten Step 13 Open inlet valve Step 14 Open flow bench regulator to 25psi Step 15 Open needle valve and bring low pressure gauge to 25psi Step 16 Toggle A B valve to equalize pressure on either side of valve Step 17 Close needle valve and observe low pressure gauge Any pressure drop represents a leak between the outlet of the needle valve and the ends of the A B valve tubing Retighten fittings if needed and repeat Step 18 Ensure no leakage after 5 minutes then turn A B valve to other position Step 19 Ensure no leakage after 5 minutes Step 20 Remove leak test plugs to release pressure and toggle A B valve Step 21 Disconnect flow bench from flow source Step 22 Decrease flow bench regulator and close needle valve General Purpose Flow Bench 5 to 500 SLM Leak Test Procedure Equipment Flow Source leak test plug 34 leak test cap Procedure Step 1 Connect flow bench to flow source Step 2 Ensure all fittings and components are wrench tight Step 3 Turn flow bench regulator counter clockwise to zero flow Step 4 Close both 1 2 valves and open 1 4 valve
6. the 1 4 valve flow is directed through the sonic nozzles and on through a 34 A B valve By varying the upstream pressure different flow rates can be achieved by directing the flow through the 0 063 sonic nozzle the 0 125 sonic nozzle or both at the same time Adjust the inlet pressure using the regulator with the appropriate valve s open and running This table provides approximate flow rates at 760mmHg and 21 1 C Sonic Nozzles Input Pressure psi 0 063 0 125 Flow Rate slpm X 75 30 X 290 X X 365 X 82 35 X 325 X X 400 X 90 40 X 360 X X SEL X 100 45 X 390 X X 490 50 X 110 X 420 MFC s can be calibrated by connecting to the 1 2 flow port upstream of the valves and closing the 1 4 valve and both 1 2 valves Use the regulator to set the proper inlet pressure for your DUT Connect your Bios DryCal standard to the outlet of your DUT The following formula represents the MFC s accuracy in comparison to your Bios DryCal unit Accuracy full scale DryCal measurement DUT reading 100 DUT full scale Recalibration No calibration is required for Mesa Gas Flow Benches Limited Warranty The Bios DryCal Flow Bench is warranted to the original end user to be free from defects in materials and workmanship under normal use and service for a period of one year from the date of purchase as shown on the purchaser s receipt I
7. B switch to your Met Lab and begin taking flow measurements with your Met Lab Based upon your Met Lab s flow measurements as necessary use the needle valve to adjust the flow to the desired rate Step 4 Flip the A B switch to the DUT Begin taking flow measurements with the DUT Step 5 Flip the A B switch to your Met Lab Begin taking flow measurements with your Met Lab Since Step 5 is a direct comparison of your Met Lab s measurements your Step 5 results should not differ from your Step 3 results by more than twice your Met Lab s rated accuracy e If using this procedure to calibrate variable area gas flow meters rotameters for best results consult our separate application note entitled Variable Area Gas Flow Meter Calibration Procedure Using Mesa Met Lab Series Primary Piston Provers e We recommend taking a minimum of ten flow measure ments in an average The more measurements in the average the better the calibration results e Allow the Met Lab to stabilize before beginning a calibration About Mesa Mesa is a recognized leader in primary gas flow Step 6 measurement We provide products services and solutions for professionals in diverse disciplines including environmental protection occupational health and safety industrial process control research Determine the accuracy of the DUT using the following formula Error DUT Reading Met Lab Reading 1 x 100 and development and calibration l
8. Bios DryCal TECHNOLOGY Gas Flow Bench User Manual MesaLabs MesaLabs Mesa s Commitment As a manufacturer of critical equipment quality is the highest priority in our manufacturing process Mesa commits to providing creative innovative thinking and the engineering and scientific expertise needed to produce gas flow related products and solutions that are universally recognized for their superior performance quality and value Proven Bios DryCal technology is the recognized leader in gas flow measurement providing the industry s most reliable products service and solutions for professionals in environmental protection workplace safety industrial process control and laboratory calibration We strive to provide the closest NIST traceable legal defensibility of any flow calibration equipment manufacturer and we actively maintain our NVLAP NIST ISO 17025 laboratory accreditation in order to support our claims and continually improve our quality system and laboratory profi ciency Thank you for purchasing our products From all of us at Mesa best wishes for many years of accurate defensible primary flow measurements Mesa Laboratories Inc 10 Park Place Butler NJ 07405 USA 973 492 8400 FAX 303 484 4992 www mesalabs com Symbol MLAB on the NASDAQ Table of Contents Register Your Oe le EE 2 ADOUt FOW TEE 2 eo lee 2 Leak Test Proced re eege Ee 5 else 7 DEE 16 f Accuracy Reliability Conven
9. Set the variable area flow meter s flow at the desired level using the needle valve The flow rate is indicated by the point on the printed scale where the floats center stabilizes Step 7 Wait one to two minutes for the float to stabilize To ensure a particular flow point flip the A B switch back and forth a few times to check if the float returns to the previous scale point If it needs adjustment adjust the flow using the needle valve Step 8 Record the low range pressure gauge s pressure reading in psia Step 9 If you are not using a direct scale variable area flow meter record the reflected flow rate reading from the reference flow table against the floating point Step 10 Refer to Flow Corrections in order to correct the variable area flow meter s indicated flow for the operating temperature pressure and the type of gas Step 11 Flip the A B switch to your Met Lab Begin taking flow measurements with your Met Lab Step 12 Determine the full scale accuracy of the variable area flow meter using the following formula Accuracy Met Lab s Flow Measurement Variable Area Flow Meter s corrected flow reading 100 Variable Area Flow Meter Full Scale Application Notes e We recommend taking a minimum of ten flow measure ments in an average The more measurements in the average the better the calibration results e Allow the Met Lab to stabilize before beginning a calibration e When calib
10. aboratories Step 7 Our Butler New Jersey facility is one of the world s most To calibrate the DUT at alternate flow points repeat accurate gas flow measurement laboratories Since 2004 Step 3 and adjust the needle valve and or the pressure we ve been accredited to the calibration laboratory qual to the needle valve to obtain alternate flow ity and proficiency standards set forth by ISO 17025 ANSI Z 540 and NIST Handbook 150 through the National Voluntary Laboratory Accreditation program NVLAP of the National Institute of Standards and Technology NIST the national lab of the United States We re pleased to state that our Scope of Accreditation un certainty is 0 071 of reading for gas flow measurements from 5 to 50 000 scc per minute A current copy of our accreditation certificate and scope may be found on our website at www drycal com General Purpose Flow Bench 5 to 500 SLM Procedures Your Mesa General Purpose Flow Bench 5 to 500 SLM utilizes different technologies to provide a stable gas flow By closing both 2 valves flow is directed through a needle valve capable of providing a stable flow in the range of 5 50 SLm The flow continues through a 1 4 A B valve and is diverted to either the DUT Device Under Test or the Bios DryCal Standard In addition to the needle valve the Mesa 500 SLm Flow Bench has two sonic nozzles that provide a stable flow source at higher flow rates up to 500 SLm By closing
11. ating variable area flow meters using a Mesa Met Lab primary piston prover correction must be applied to the Met Lab s indicated flow measurements in order to take into account the difference between the actual temperature pressure and gas used versus the variable area flow meter s specified temperature pressure and gas requirements To properly calibrate variable area flow meters refer to the following formula Variable Area Flow Meter s Corrected Flow Variable Area Flow Meter s Indicated Flow X Correction Factor Where Correction Factor v A x B x C Where A The Specific Gravity of the calibration gas as specified by the variable area flow meter The Specific Gravity of the calibration gas B The operating Pressure in PSIA during calibration Pressure in PSIA as specified by the variable area flow meter C Temperature in K as specified by the variable area flow meter Temperature in K during calibration Equipment required 1 Mesa Gas Flow Delivery System part number 100 030 2 Mesa Met Lab Series primary piston prover models ML 800 ML 500 or Definer 220 The Mesa Gas Flow Delivery System features an on off valve precision pressure regulator high side and low side pressure gauges needle valve A B switch three way valve quick connect with male and female connectors and breadboard Variable Area Gas Flow Meter Calibration Installation Step 1 Connect and or verify all device co
12. erature typically 0 0C or 21 10C refer to your Met Lab manual as necessary Step 3 If the MFC requires a sensor factor for the gas under test if that gas is a surrogate or proxy gas make sure to change the Met Lab s sensor factor to match that of the MFC the sensor factor is obtained by the MFC manufacturer Step 4 Open the on off valve Using the pressure regulator adjust the gas flow s pressure to match that of the MFC s rated inlet pressure If the indicated gauge pressure is more than the MFC s rated pressure loosen the connection to the MFC and simultaneously adjust the pressure regulator until the desired pressure is achieved Step 5 Set the flow to the MFC as applicable this is done using either your Integrator Pro or the alternate MFC control box Step 6 Begin taking flow measurements with your Met Lab Your Met Lab s flow measurements are reflected on your Integrator Pro s display along with the deviation percentage between the MFC and your Met Lab Application Notes e Allow the MFC to warm up before beginning a calibration by connecting the MFC to the power supply or to the Integrator Pro see Integrator Pro manual before inputting a setpoint e Allow a specified valve change time before recording the results of consecutive setpoints e Allow the Met Lab to stabilize before beginning a calibration for optimum measurement results e The following formula represents the MFC s accuracy in
13. ermine the full scale accuracy of the variable area flow meter using the following formula Full scale accuracy MetLab s flow reading VAF s indicated flow reading VAF s full scale On General Purpose Flow Calibration models 100 030 L H Procedure Using the Mesa Met Lab Series and Mesa Gas Flow Delivery System Introduction The flow measurement professional is responsible for calibrating and or verifying the accuracy of various flow measurement devices This costly time consuming process typically involves sending devices out for calibration or verifying devices in house As the leader in primary gas flow measurement Mesa has developed a general purpose calibration procedure that combines the precision and high speed of our Met Lab Series of primary piston provers with carefully selected instruments and gauges to enable the calibration of not only Mesa primary standards but other piston provers bubble meters and variable area gas flow meters rotameters Equipment required 1 Mesa Met Lab Series primary piston prover models ML 800 ML 500 or Definer 220 2 Mesa Gas Flow Delivery System part number 100 030 The Mesa Gas Flow Delivery System features an on off valve precision pressure regulator high side and low side pressure gauges needle valve A B switch three way valve quick connect with male and female connectors and breadboard Installation Step 1 Connect and or verify all device connec
14. es a Pressure gauge and a Back Pressure Regulator The back pressure module is used in conjunction with flow bench 100 025 or 100 030 for calibrating flow meters at a specific pressure Pic 3 Back pressure module with 100 025 Features e Back pressure regulator to create a specific pressure e Specially designed for MFC and rotameter calibration at a specific pressure The Mesa General Purpose Flow Bench 5 to 500 SLM 100 031 is pre configured for most calibration applications This includes Variable Area Flow Meters Piston Provers Bubble Meters Mass Flow Controllers and Mass Flow Meters where the exhaust is at atmospheric pressure If your device being cali brated requires backpressure contact Mesa for the additional required backpressure module General Purpose Flow Bench 5 to 500 SLM Features e Pressure regulator to obtain and maintain the required inlet pressure e Pressure gauge to set inlet pressure e Valves to direct flow to various flow control devices e Needle valve to set flow rates from 5 50 SLm e 0 063 and 0 125 sonic nozzles to set flow rates from 50 500 SLm e A B valves to divert flow between the DryCal standard and DUT e 1 2 port to connect a MFC to the pressure regulated gas source Leak Test MFC Flow Bench Leak Test Procedure Equipment Flow Source 14 leak test plug Procedure Step 1 Connect flow bench to flow source using 1 4 rigid tubing Step 2 Ensure all fittings and c
15. f the unit was purchased from an authorized reseller a copy of an invoice or packing slip showing the date of purchase may be required to obtain warranty service The obligation of Mesa Labs under this warranty shall be limited to repair or replacement at our op tion during the warranty period of any part that proves defective in material or workmanship under normal use and service provided the product is returned to Mesa Labs transportation charges prepaid Notwithstanding the foregoing Mesa Labs shall have no liability to repair or replace any Mesa Labs product 1 That has been damaged following sale including but not limited to damage resulting from improper electrical voltages or currents defacement misuse abuse neglect accident fire flood terrorism act of God or use in violation of the instructions furnished by Mesa Labs 2 When the serial number has been altered or removed or 3 That has been repaired altered or maintained by any person or party other than Mesa Labs own service facility or a Mesa authorized service center should one be established This warranty is in lieu of all other warranties and all other obligations or liabilities arising as a result of any defect or deficiency of the product whether in contract or in tort or otherwise All other warranties expressed or implied including any implied warranties of merchantability and fitness for a particular purpose are specifically excluded MesaLabs
16. ience Register Your Product Before we begin please register your product with Mesa Laboratories Inc To complete your registration log on to our website at www drycal com and complete the registration form Registration of your new Bios DryCal product ensures your instruments warranty claim information is properly documented in Mesa s database and provides you the peace of mind that your new calibration equipment is covered under our warranty service plan About Flow Bench Gas flow benches offer practical engineered solutions for calibration of gas flow measurement devices us ing Proven Bios DryCal technology Mesa flow benches are configured to provide the stable flow critical to the calibration process Our configurations use different components to connect the gas source regulate pressure control the flow and direct the flow to a specific device being calibrated against a DryCal stan dard Configurations The Mesa Flow Benches are pre configured for specific applications They are available in different configurations MFC Flow Bench Model 100 025 is a Gas flow delivery system used for calibrating Mass Flow Controllers where the exhaust of the MFC is at atmospheric pressure It includes an on off valve a precision pressure regulator a pressure gauge and an MFC mounting stand It requires connection to a gas source of ap proximately 100 psi Pic 1 MFC Flow Bench model 100 025 Features e MFC mounting stand t
17. nnections The Mesa Gas Flow Delivery System comes with in series 1 4 tubing connection of the on off valve pressure regulator high range pressure gauges needle valve and A B switch as well as a quick connect with male female connectors for connection of the on off valve to the gas cylinder compressed air Step 2 Connect one end of the A B switch to the inlet fitting of the variable area flow meter and the other end to the inlet fitting of your Met Lab Step 3 Using the quick connect connect the on off valve to the gas cylinder compressed air Gas inlet pressure should be approximately 80 to100 psi Procedure Step 1 Close the needle valve open the on off valve and set the gas pressure by adjusting the pressure regulator to above 30 psi Step 2 If the variable area flow meter contains a built in needle valve open its needle valve fully for unrestricted gas flow Step 3 Turn on your Met Lab primary piston prover Through its Setup menu set your Met Lab s pressure unit to psi and its flow readings to Vol Volumetric For other flow measurement options such as Continuous readings or the number of readings in the average consult your Met Lab product manual Step 4 Press your Met Lab s Read button in order to record the ambient pressure and temperature Step 5 Flip the A B switch to the variable area flow meter and gradually begin to open the needle valve on your flow bench Step 6
18. o hold the MFC e Pressure regulator to obtain and maintain the required MFC inlet pressure e 1 4 Tubing connection compatible to most popular MFCs e Quick connect to secure an easy connection to the flow source Specially designed for MFC calibration General Purpose Flow Bench Model 100 030 L H is a gas flow delivery system used for calibrating rota meters bubble meters and flow calibrators It includes an on off valve a precision pressure regulator a high side pressure gauge a needle valve a low side pressure gauge and an A B valve It requires connection to a gas source of approximately 100 psi The General Purpose Flow bench can be configured as low and high flow based on needle valve selected either e Mesa part number 100 007 Low Flow Needle Valve for a flow rate 5 5000 cc min e Or Mesa part number 100 008 High Flow Needle Valve for a flow rate 500 50 000 cc min Pic 2 General Purpose Flow Bench Model 100 030 L H Features Pressure regulator to obtain and maintain the desired pressure Needle valve to control the flow Quick connect to secure an easy connection to the flow source Low side pressure gauge to measure the pressure drop across the flow meter Configured to calibrate any kind of flow measurement device Can be configured to calibrate mass flow meters Back Pressure Module Model 100 028 is an add on Module that allows calibration of a device under test DUT at back pressure of up to 60 PSI It includ
19. of the 12 valve an A B valve Retighten fittings if needed and repeat Step 21 Remove leak test plugs to release pressure Leak test com plete Application MFC Calibration Procedure Using Mesa Met Lab Series Primary Piston Prover Introduction The flow measurement professional is responsible for calibrating and or verifying the accuracy of various flow devices such as mass flow controllers MFCs This costly time consuming process involves sending MFCs out for calibration or verifying them in house As the leader in primary gas flow measurement Mesa Labs has developed an on site calibration solution that combines the precision and speed of our Met Lab Series of primary piston provers MFC control system and carefully selected instruments and gauges to enable fast precise verifications of MFCs while removing much of the guesswork and interpretation from the process This MFC calibration procedure is designed to help the flow measurement professional apply our MFC calibration solution and Met Lab piston prover for optimum defensible results Equipment required On Off Valve Pressure Regulator Pressure Gauge MFC Mounting Stand Mesa Integrator Pro MFC Command Control and Readout Device 6 Mesa Met Lab shown with model ML 800 7 Mass Flow Controller MFC 8 Breadboard Oa P GO M r For your convenience Mesa offers the MFC Ambient Gas Flow Delivery System part number 100 025 pic
20. omponents are wrench tight Step 3 Ensure inlet valve is closed and open flow source Step 4 Turn flow bench regulator counter clockwise to zero flow Step 5 Put leak test plug on end of flow bench and tighten Step 6 Open the inlet valve to supply gas to flow bench Step 7 Open the flow bench regulator to increase pressure to 80psi or equal to inlet pressure Step 8 Close inlet valve and observe the pressure gauge on flow bench Any drop in pressure represents a leak Retighten fittings if needed and repeat Step 9 Ensure no leakage after 5 minutes Step 10 Remove leak test plug to release pressure Step 11 Disconnect flow bench from flow source Step 12 Decrease flow bench regulator General Purpose Flow Bench models 100 030L H Leak Test Procedure Equipment Flow Source 14 leak test plug 1 4 Swage union Procedure Step 1 Connect flow bench to flow source using 1 4 rigid tubing Step 2 Ensure all fittings and components are wrench tight Step 3 Ensure inlet valve is closed and open flow source Step 4 Turn flow bench regulator counter clockwise to zero flow Step 5 Turn needle valve clockwise to zero flow Step 6 Open the inlet valve to supply gas to flow bench Step 7 Open the flow bench regulator to increase pressure to 80psi or equal to inlet pressure Step 8 Close inlet valve and observe first pressure gauge on flow bench Any drop in pressure represents a leak between
21. rating a variable area flow meter it s best to use its specified calibration gas calibrating with a sur rogate gas can add greater uncertainty If a surrogate must be used we recommend using one with specific gravity similar to the gas the variable area flow meter is designed for An Alternative Method of Calibrating Variable Area Flow Meter at Rated Temperature and Pressure Using MetLab Series Primary Piston Prover Introduction The previous Mesa method recommends calibration of a variable area flow meter rotameter by applying a correction factor to the Met Lab s indicated flow reading for temperature and pressure without subjecting the rotameter to the pressure specified for the variable area flow meter This procedure is recommended as an alternative method for rotameter calibration where it will be subjected to its rated pressure using the Mesa back pressure module The back pressure module consists of a back pressure regulator and a pressure gauge Flow Corrections Each variable area flow meter is designed to operate under a certain set of conditions which include the temperature pressure and the type of gas Usually these conditions are documented on the tube enclosure of the rotameter A reference table is provided to match the millimeter readings against the equivalent flow rates at the specified temperature and pressure Otherwise direct scale variable area flow meter indicates the flow rates directly on the tube enclos
22. tions The Mesa Gas Flow Delivery System comes with in series 1 4 tubing connection of the on off valve pressure regulator pressure gauges needle valve and A B switch as well as a quick connect with male female connectors for connection of the on off valve to the gas cylinder compressed air Step 2 Connect one end of the A B switch to the inlet fitting of the DUT Device Under Test and the other end to the inlet fitting of your Met Lab Step 3 Using the quick connect connect the on off valve to the gas cylinder compressed air Gas inlet pressure should be approximately 80 to100 psi ca gt S Calibrating a Variable Area Flow Meter Procedure Step 1 Close the needle valve open the on off valve and set the gas pressure by adjusting the pressure regulator to above 30 psi Step 2 Turn on your Met Lab primary piston prover Through its Setup menu set the Met Lab s flow readings to either Vol Volumetric or Std Standardized depending on the reading type of the DUT Device Under Test If setting your Met Lab to standardized flow readings set the Met Lab s standardizing temperature to match that of the DUT s standardizing temperature For other flow measurement options such as Continuous readings or the number of readings in the average consult your Met Lab product manual General Purpose Calibration continued Step 3 Application Notes Open the needle valve flip the A
23. tured above as a pre packaged MFC calibration solution please contact Mesa or an authorized Bios DryCal sales representative for details Note Met Lab and Integrator 110 not included Installation using the Mesa MFC Ambient Gas Flow Delivery System Step 1 Verify all device connections The Mesa MFC Ambient Gas Flow Delivery System comes with in series 1 4 tubing connection of the on off valve pressure regulator and pressure gauge as well as a quick connect with male female connectors for connection of the on off valve to the gas cylinder compressed air Step 2 Place the MFC under test on the mounting stand First check the flow direction before mounting the MFC and then firmly tighten the base plate screws Step 3 Place your Met Lab in the most downstream position of the series Connect 1 4 tubing from the pressure gauge to the MFC s input and from the MFC s outlet to the Met Lab s inlet Step 4 Connect both the MFC s cable and the Met Lab s serial cable to the designated ports on the back of the Integrator Pro refer to Integrator Pro manual as necessary MFC Calibration continued Procedure Step 1 Turn on your Met Lab primary piston prover and either your Integrator Pro or alternate MFC control box as applicable Step 2 Set your Met Lab s measurement type to Std for standard izing and set its standardizing temperature to match that of the MFC s standardizing temp
24. ure When calibrating a rotameter using a Mesa Met Lab piston prover a flow correction factor FCF must be applied to the Met Lab s indicated flow measurement in order to take into account the difference between the actual temperature versus the rotameter s rated temperature In this procedure no correction is applied for the pressure as the equipment set up is designed to calibrate the rotameter at rated pressure Correction is applied to the Met Lab s indicated flow measurement only when the actual gas temperature differs to its rated temperature Flow correction factor FCF 1 v calibration temp in Fahrenheit 460 operating temp in Fahrenheit 460 Set up diagram Back P pressure gt pressure gt regulator On off Needle gt VA valve Pressure gt Pressure valve Meter regulator gauge Equipment required 1 Mesa Gas Flow Delivery System consists of on off valve pressure regulator pressure gauge needle valve 2 Back pressure regulator and pressure gauge 3 Mesa Met Lab series Primary Piston Prover Models ML 800 ML 500 or Definer 220 Installation Step 1 Step 2 Connect all the devices as per the set up diagram The gas flow delivery system comes with a Quick Connect tubing from the back pressure regulator Connect with male female connector that connects the to the inlet of the Bios DryCal unit and leave the outlet on off valve to gas cylinder compressed air Connect the
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