User`s Manual RTD Thermometer Model 407907
Contents
1. User s Manual EXTEGA 1 RTD Thermometer Model 407907 HOLD CF RECORD RECALL Precition RID Thermometer 407907 Shown with RTD probe Probe sold separately Introduction Congratulations on your purchase of the Heavy Duty Extech 407907 RTD Thermometer which offers high precision and selectable 0 1 and 0 01 resolution The LCD display provides low battery and overload indication Selectable temperature units C amp F provides measurement versatility 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 one year from date of shipment a six month limited warranty applies on sensors and cables fj ol necessary to return the instrument for service during or beyond the Sardy NAC REET Th dubtomer Service Department at 781 890 7440 ext 210 for authorizatiorr or visit our website at www extech com click on Contact Extech and go to Service Department to request an RA number 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 specificat2. compartment rear 7 Protective holster O lt i ion 1 e l Operation Connecting the optional RTD probe Plug the optional 4 wire RTD probe sold separately into the jack at the top of the meter The jack is keyed and can only be inserted one way Use care when inserting the probe Powering the meter To power the meter slide the OFF ON switch to the ON position If the display remains blank check the 9V battery rear compartment Slide the switch to the OFF position to turn the meter off Remove the battery if the meter is to be stored for long periods Selecting units of measure Press the F C button to select the desired temperature units The LCD display will show the C or the F symbol to indicate the currently selected unit of measure Selecting the resolution The meter offers 0 1 and 0 01 display resolution To select the resolution use the 0 01 0 1 switch The display will reflect the currently selected resolution Use the specifications shown earlier in this manual to determine the best resolution for the measurement range of a given application Taking measurements Once the meter has been setup and a probe has been inserted in the jack at the top of the meter place the temperature probe in the area under test Give the meter several seconds to stabilize Read the temperature measurement on the LCD If dashes appear on the display either the reading is out
3. ery Replacement The low battery indicator battery symbol appears on the LCD when the 9V battery needs replacing Reliable readings can be obtained for several hours after the first appearance of the low battery indicator To replace the battery 1 Remove the meter s rubber protective holster 2 Remove the battery compartment cover back of meter using a small coin or screwdriver 3 Replace the 9V battery heavy duty alkaline type and reinstall the cover Replace the rubber holster 4 wire RTD input pin out Top View Calibration and Repair Services Extech offers complete repair and calibration services for all of the products we sell For periodic calibration NIST certification or repair of any Extech product call customer service for details on services available Extech recommends that calibration be performed on an annual basis to insure calibration integrity 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 s Guide Software updates and other up to the minute product information visit our website www extech com Extech Instruments Corporation 285 Bear Hill Rd Waltham MA 02451 Copyright 2006 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part
4. in any form 4 Model 407907 V 1 3 01 06
5. ion improper maintenance or repair or unauthorized modification Extech specifically disclaims 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 Specifications General Specifications Display 4 1 2 digit 20 000 count LCD display with over range and low battery indication Measurement Temperature selectable C amp F units Data Hold Freezes displayed reading RTD Probes sold separately 4 wire platinum 100Q RTD 0 00385 alpha coefficient meet DIN IEC 751 RTD probe jack Proprietary 4 pin circular connector uses Extech RTD probes sold separately Operating conditions Temperature 32 F to 122 F 0 C to 50 C RH lt 80 Weigh Dimensions 7 1 x 2 8 x 1 3 180 x 72 x 32 mm Range Specifications Temperature Ranges Accuracy of reading 199 99 to 392 00 F 0 01 F k 0 1 0 4 F 392 0 to 1562 0 F 199 99 to 199 00 C 0 01 C 5 0 1 0 2 C 200 0 to 850 0 C Probe accuracy is additional F C 2 Model 407907 V 1 3 01 06 Meter Description 1 RTD probe connector e ReRe et OO 3 LCD display 2 4 Keypad xN RTD probe Sold separately 5 6 Battery
6. of range or the RTD probe is not connected or defective Maximum and Minimum MAX MIN Record and Recall When selected the recording function stores the MAX MIN readings for later recall 1 Press the RECORD button once The RECORD indicator will appear on the display 2 After readings are taken press the RECALL button to view the maximum reading The MAX indicator will appear on the display to inform the user that the reading now on the display is the highest reading since the RECORD button was first pressed 3 Press the RECALL button again to view the minimum reading The MIN indicator will appear on the display to inform the user that the reading now on the display is the lowest since the RECORD button was first pressed 4 To return to normal operation press the RECORD button again The RECORD MAX and MIN indicators will extinguish 3 Model 407907 V 1 3 01 06 Data Hold To freeze a reading on the LCD press the HOLD button Temperature readings require several seconds to stabilize therefore use Data Hold only after a reading has fully stabilized P LB betton again to return the meter to normal operation 407 RS 23 The meter includes a built in RS232 serial data port This interface was designed for use with the Extech Data Acquisition Software Extech Part Number 407001 and enables the user to store readings on a PC For more information contact Extech or refer to the manual accompanying the software for details Batt
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