Pressure/ Vacuum Transducer Module Instruction Sheet
Contents
1. 4 to 704 9 to 2439 2 1829 7 720 3 Zero the module before making psi measurements Do not re zero when switching to check kPa cm Hg or in Hg readings Specifications The following specifications apply at 23 5 C for 1 year after calibration when the module is zeroed prior to each measurement Pressure Range Accuracy to 350 psig 1 of reading 0 3 psig 3 447 to 2413 kPa 41 2 1 kPa 350 to 500 psig 5 of reading 1 psig typical 2413 to 3447 kPa 5 7 0 kPa Vacuum Range Accuracy 0 to 29 9 in Hg 1 of reading 0 5 in Hg 0 to 76 cm Hg 41 of reading 1 3 cm Hg Output 1 mV per unit psi kPa cm Hg or in Hg Resolution 0 1 psi in Hg in mV range 1 psi in Hg in Volt range with 3 1 2 or 4 digit meters RFI Specification Typically lt 1 error from 14 kHz to 30 MHz at 1 V M Meter Input Impedance 10 MQ For input impedance of 1My add 0 5 to basic accuracy specification Maximum working pressure 500 psi Burst Pressure 1000 psi Storage Temperature 51 to 71 C Operating Environment Temperature Humidity 10 to 10 C Uncontrolled Humidity 10 to 30 C 0 to 95 Relative Humidity 30 to 40 C 0 to 75 Relative Humidity 40 to 50 C 0 to 45 Relative Humidity 50 to 55 C 0 to 35 Relative Humidity Temperature Derating Add to Basic Accuracy Specification C ambient temperature Temperature Range Derating 28 to 55 C 0 016 x C 28 182. to 28 C No derating 0 to 18 C 0 048 x 18 C 10 to 0 C 0 264 x 9 C General Weight 12 oz 336 grams Battery Standard 9V battery NEDA 1604 6F22 006P Battery Life 300 hours typical for Carbon zinc 400 hour typical for Alkaline Vibration 3g 55 Hz Shock 1 meter drop Electrical Cable Black PVC will withstand up to 105 C Cable Length 8 feet Pressure Port Connection 1 4 inch NPT Connector Brass 1 4 in male flare to1 4 in female pipe thread Table 3 List of Replaceable Parts JF PN Description 446823 Battery Primary 9V 0 15 mA 650903 Case Bottom PV350 919790 Case Top PV350 913207 Fitting BR SAE 45 1 4 FP 926873 PV350 Instruction Sheet 926881 PV350 Quick Reference Guide 927009 Replacement Cable Assembly For application or operation assistance or information on Fluke products call 800 44 FLUKE 800 443 5853 in U S A and Canada 31 40 723 220 in Europe 206 356 5500 from other countries The phone number for replacement parts is 1 800 526 4731 Fluke Corporation Fluke Europe B V P O Box 9090 P O Box 1186 Everett WA 5602 B D 98206 9090 Eindhoven The Netherlands
3. FLUKE PV350 Pressure Vacuum Transducer Module Instruction Sheet Introduction The PV350 Pressure Vacuum Transducer Module the module measures gauge pressure the difference between atmospheric barometric pressure and the pressure or vacuum applied to the pressure port on the transducer It then converts that measurement to 1 mV dc per unit A module and a high performance digital multimeter DMM with min max function become a datalogger capable of measuring peak high and peak low Box Contents Pressure Vacuum Transducer Module 1 4 inch male flare to 1 4 inch female pipe thread connector 9V battery e Storage tray Instruction Sheet Quick Reference guide and warranty card Safety Information WARNING To avoid eye injury always wear approved safety glasses when working with this instrument To avoid injury from pressure explosion Be sure that pressure is removed before disconnecting any hoses or tubing from the PV350 transducer Follow accepted safety procedures for systems on which pressure or vacuum measurements are made Make sure the PV350 is serviced by a qualified technician Safety Standards Complies with test pressure requirements of ANSI ISA S82 03 1988 Protection Class IIl per IEC 1010 1 1990 Annex H PN 926873 May 1992 Rev 4 9 97 1999 Fluke Corporation All rights reserved Printed in U S A All product names are trademarks of their respective companies This mod
4. diaphragm can be damaged by solid or sharp objects Never insert any object into the inlet port Clean the sensor immediately after use with appropriate solvents refer to the solvent manufacturer s instructions NOTE Fluke recommends that teflon sealing tape or its equivalent be used in fitting threads to ensure good seals between the PV350 and any hoses or fittings 1 Plug the PV350 into the DMM red polarity dot to volts input and set the multimeter to mV dc Check the battery voltage see Testing the Battery Press the English Metric button to select the desired units Slide the switch to the desired setting a F oO DN Before applying pressure zero the module by turning the ZERO potentiometer until the DMM displays zero Zero on the range you will be using and rezero the DMM whenever the scale is changed Sensor Figure 1 Operation NOTE The Relative or Zero function on your DMM if available can be used instead of the ZERO potentiometer to zero the meter Refer to the multimeter s user manual for instructions on using this function Zeroing the meter does not affect the module s specified accuracy 6 Apply pressure vacuum to the PV350 and read the DMM display When measuring pressure if the DMM displays OL switch the multimeter range from millivolts to dc volts Increasing the range to dc volts moves the decimal position three places to the left 500 psi displays as 0 500V When meas
5. eading to 0 0000V 0 0001V Figure 3 Calibration Adjustment Points 8 Connect the sensor to the pressure reference and nitrogen bottle pressure calibration system 9 Adjust the pressure regulator to about 250 psi The readings on the reference pressure gauge and the reading from the PV350 should agree within 0 1 of the point 0 3 psi approximately 0 0006V or 0 6 psi Adjust R16 as necessary 10 Adjust the pressure regulator to about 350 psi The readings on the reference pressure gauge and the PV350 should agree within 0 1 of the point 0 3 psi approximately 0 0007V or 0 7 psi If necessary adjust R16 to bring the reading into specification and recheck the 250 psi point It may be necessary to repeat steps 9 and 10 until both points are within specification 11 Reduce pressure to zero and switch the module OFF How to Verify Calibration 1 Connect the sensor transducer to a pressure calibration standard and plug the module into the DMM 2 Be sure the system is vented then zero the module 3 Enter the pressure settings shown in Table 2 and check for the indicated readings NOTE To save time verify each reading psi kPa cm of Hg and inches of Hg before changing the pressure setting Table 2 Readings in mV Setting psi kPa cm Hg Inches Hg in psi 0 0 1 to 0 1 2 1 to 2 1 1 6 to 1 6 0 6 to 0 6 125 123 4 to126 6 5 Sz 350 346 2 to 353 8 2386 8 to 1790
6. early to ensure that it meets its performance specifications Table 1 Recommended Equipment Instrument Precision Pressure Reference accuracy Pressure Source psi DMM 0 to 500 mV minimum with 0 1 mV resolution 10 MQ input impedance Minimum Specification 500 psi 0 25 of reading Nitrogen gas bottle with pressure regulator gt 750 Recommended Model Crystal Engineering inHg PSIG Multical or equivalent Tescom pressure regulator Model 44 2214 24 1V Fluke 45 or equivalent 1 Allow the PV350 to stabilize at room temperature away from drafts for at least 30 minutes Turn on the DMM and if required by its operating instructions allow it to warm up as indicated 2 Connect the pressure regulator to the nitrogen bottle and the reference pressure gauge to the pressure regulator The nitrogen bottle must have gt 750 psi 3 Verify the condition of the battery and if necessary replace the battery Refer to Figure 2 4 Remove the top cover of the module and connect it to the mV input of the DMM Set the scale to measure 500 mV 0 1 mV resolution 5 Turn on the PV350 and allow it to warm up for two minutes 6 Set the PV350 to the psi range 7 Center the ZERO potentiometer R3 see Figure 3 Remove the knob from R3 and insert it into R4 the coarse zero adjustment With no pressure applied set the reading to OV 0 0003V Insert the knob back into R3 and adjust the final r
7. ule has been designed and tested in accordance with IEC Publications 348 and 1010 To ensure that the module is used safely follow all safety and operating instructions in this Instruction Sheet If the module is not used as described in this Instruction Sheet the safety features of the module might be impaire Do not use the module if the module or fittings look damaged or if you suspect that the module is not operating properly A This symbol on the module indicates that an operator should refer to an explanation in the instruction sheet Follow accepted safety procedures for the systems on which pressure or vacuum measurements are being made Materials Compatibility The PV350 is compatible with industrial gases and liquids that are compatible with 316 stainless steel To determine the compatibility of a liquid or gas refer to the manufacturer s specifications When making measurements on more than one type of pressure system make sure the fluids or gases in those systems are compatible If they are not contamination or damage to the system being measured may result Cleaning Clean the module using a soft cloth and mild soap and water Do not immerse the PV350 in liquids Clean the transducer and connectors after each use with a cleaner appropriate for the liquid or gas connected during measurement Refer to the manufacturer s instructions for the proper cleaning material Measuring Pressure and Vacuum Caution The sensor
8. uring vacuum the DMM displays a minus sign Testing the Battery 1 Turn the DMM and the module OFF and connect the PV350 to the DMM 2 Turn the DMM on and set the DMM to the mV dc range 3 If the DMM displays less than 100 mV replace the battery How to Replace the Battery WARNING TO AVOID ELECTRICAL SHOCK DISCONNECT THE MODULE FROM ALL DEVICES BEFORE OPENING THE CASE BE SURE TO COMPLETELY REASSEMBLE THE MODULE BEFORE ATTEMPTING TO USE IT Battery Figure 2 Battery Replacement 1 Turn the module OFF and unplug it from the DMM 2 Remove the screw from the back of the module separate the case and replace the battery 3 To reassemble line up the holes in the case with the metric english switch and zero knob Then snap the two halves together Reinstall the screw Typical Applications Pressure for HVAC R Super Heat Measurements Measure Pneumatic Pressures psi inches of H O x 3 6127 x 10 psi mm of H O x 1 4223 x 10 psi cm of H O x 14 223 x 10 psi bar x 14 503 inches of H O psi x 27 68 mm of H O psi x 703 1 cm of H O psi x 70 3 bar psi x 0 0689 psi Ibs ft x 6 9444 x 10 psi mbar x 1 4503 x 10 psi Pascals x 1 4503 x 10 lbs ft psi x 144 mbar psi x 68 9513 Pascals psi x 6 895 x 10 All H O conversion factors are 4 C Conversion Factors How to Calibrate the PV350 Calibrate the PV350 y
Download Pdf Manuals
Related Search