User`s Manual Heavy Duty Pressure Meter Model 407495
Contents
1. User s Manual INSTRUMENTS Heavy Duty Pressure Meter Model 407495 Introduction Con Ap ar Ato S 35 e of the Extech Heavy Duty Pressure Meter Model 407495 hi Ek mud displays pressure in eight 8 measurement units Up to three 3 interchangeable transducers sold separately in varying ranges can be used with this meter Special features include RS 232 PC Interface Min Max Memory push button Zero Data Hold and Auto Power Off This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for three years from date of shipment a six month limited warranty applies to sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website www extech com for contact information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically discl2. aims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied Meter Description 1 Transducer cable shown plugged into meter input jack 1 2 RS 232 Output Jack 3 LCD Display 3 IANN 4 Protective rubber holster 4 5 Keypad 5 6 Battery compartment on rear of meter 7 Transducer shown attached to meter cable 2 407495 V2 1 112007 Preparation for Use Measurement iryzednreOperyjew The following list provides an overview of pressure measurement steps Each step is discussed in subsequent paragraphs Note that the first 4 steps should only be performed the first time the meter is used and each time the transducer is changed 1 Select a Transducer model that covers the desired range Plug the Transducer into the meter s input jack Program the Transducer range Select the measurement units Zero the meter Connect the Transducer to the process under test pU Ol ae ae Iw Apply pressure to the process under test 8 Read pressure reading on the meter s LCD Selecting Transducer Range 1 With the meter turned OFF simultaneously press and hold the HOLD SENSOR amp RECORD buttons down 2 While holding the three bu
3. emperature 32 to 122 F 0 to 50 C Operating Humidity Less than 80 RH Dimensions 7 1 x 2 8 x 1 3 180 x 72 x 32mm Weight Approx 0 76 lbs 345g Accessories Protective rubber holster and 9V battery Transducer Range Resolution and Accuracy Specifications mm Hg in Hg M itt ttetttt itt ttt ite t ttt Ott itt ittt sssttsntsttsss s00 00s 000000 0000 Sitettentt ttt tts ttt itt ittnnnns a anseeraersensensensesssensensensssssessdposssessssnsensensensesnssssensensocsoesTasaueeeesaueaueauesuesausausausavansausaursuesausausaussussusausouss naaa lO OOOn Resolution 0 2 0 02 Accuracy Meter only 0 5 reading 1 digit Transducer only 2 full scale Combined 2 5 full scale 1 digit Accuracy note Specified accuracy applies to meter at 23 C 5 C Calibration note Re calibration is not required each time a new transducer is attached 5 407495 V2 1 11 2007 Transducer Specifications 300psi 20 BAR Overload protection 150 of max capacity Diaphragm Ceramic Supply voltage oV Thread v PS 19 teeth per inch Span full scale 1 10 to 40 C includes linearity hysteresis amp repeatability Zero 2 Full Scale 10 C to 40 C Operating Temperature 32 F to 140 F 0 C to 40 C Operating H
4. t the ZERO button should always be pressed after swapping transducers If the display reads zero after pressing the ZERO button proceed to the next section If the display does not zero the transducer may be defective Connect Transducer Port to Process 1 2 3 4 Data 1 2 3 Ensure that the process under test is not pressurized Connect the Transducer s V PS 19 teeth per inch threaded port to the process under test Apply pressure to the process Read the pressure on the meter s LCD Hold When a reading is on the display that you wish to hold press the Data Hold button The reading will freeze and the HOLD icon will appear on the display Press the Data Hold button again to release the reading and return the meter to normal operation Minimum Maximum Reading Memory 1 o Press the RECORD RECALL button to start tracking the highest MAX and lowest MIN readings The REC indicator will appear on the LCD Take pressure measurements When pressure measurements are complete press the RECORD RECALL button to recall the Maximum reading recorded the MAX indicator will appear on the LCD Press the RECORD RECALL button again to recall the Minimum reading recorded the MIN indicator will appear on the LCD To exit this mode and return the meter to normal operation press and hold the RECORD RECALL button until the REC indicator goes out Auto Power Off In order to conserve battery life the meter a
5. ttons down press the POWER key momentarily Release the 3 buttons when the LCD display switches on 3 A number will appear on the LCD that represents the Transducer type Select the Transducer type by pressing the SENSOR TYPE key until the desired transducer number appears Select the transducer from the list below in step 5 4 Press the ZERO button to store the new transducer type The meter will memorize the new type even when the meter is turned OFF 5 Select the transducer from the following list e Select 2 for the 30 psi 2 bars transducer e Select 10 for the 150 psi 10 bars transducer e Select 20 for the 300 psi 20 bars transducer NOTE The meter does not need to be recalibrated each time the transducer is changed Connecting the Transducer to the Meter 1 Press the POWER button to turn the meter OFF 2 Remove the existing transducer if necessary by unplugging it from the meter s input jack top of meter 3 Plug the new transducer into the meter s input jack Selecting the Unit of Measure Press the UNIT key to select the desired unit of measure Bar psi Kg cm mmHg inHg mH20O inch H2O or Atmospheres ATP 3 407495 V2 1 11 007 Operation T ME 7A i 1 ter turn the meter ON and select the range that matches 2 3 the attached transducer as described in the Preparation for Use section With the transducer attached to the meter but not attached to the process press the ZERO button Note tha
6. umidity Max 80 RH Output Full capacity output 100 mV DC Size 30 mm diameter x 85mm Weight 5 650z 160g Cable length 39 1m Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify meter performance and accuracy Lm a Support line 781 890 7440 Technical Support Extension 200 E mail support extech com Repair amp Returns Extension 210 E mail repair extech com Product specifications subject to change without notice For the latest version of this User Guide Software updates and other up to the minute product information visit our website www extech com Extech Instruments Corporation 285 Bear Hill Road Waltham MA 02451 Copyright 2007 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form 6 407495 V2 1 11 2007
7. utomatically shuts off after 10 minutes To defeat this feature put the meter in the Record mode by pressing the RECORD RECALL button the REC indicator will appear As long as the REC icon is displayed the meter will stay on indefinitely RS 232 PC Interface This meter is equipped with an RS 232 PC Interface output port meter top A Data Acquisition kit that includes Windows 95 98 ME NT 2000 compatible software and a meter to PC interface cable can be obtained from Extech for use with this meter The Part Number for the kit is 407001A Instructions for use are supplied with the kit 4 407495 V2 1 11 2007 Specifications General Specife Display Multi function LCD Transducers 30 150 and 300 max psi sold separately Transducer signal Full scale 100mVDC Display units Bar psi Kg cm mmHg inches Hg meters H20 inches HO Atmosphere Zero adjust Front panel push button Data Hold Displayed reading can be held by front panel push button Min Max Memory Lowest Highest readings can be stored for later recall PC Interface kit Built in RS 232 port for use with optional Windows data acquisition software Auto Power Off To conserve battery life the meter turns OFF automatically after approx 10 minutes programmable over ride Sampling time 0 8 seconds approx Power supply 9V Battery Low battery indication Rectangular battery life box appears on the left side of LCD Power consumption Approx 7mA Operating T
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