Manual - SR Instruments, Inc.
Contents
1. Optional MANUAL SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 4 of 14 ASSEMBLY STEP 1 Unpack the scale system and check parts Sara against the PACKING CHECKLIST If there are any 1 Scale Base Cover _ Clear Acrylic Cradle missing or damaged parts please call the Service Hotline 1 800 654 6360 Nylon Screws 4 4 Battery Compartment Cover STEP 2 Figure 1 Turn the scale base over to Battery Cover Screws access the Battery Compartment Cover 4 and remove the two 2 Battery Cover Screws 5 Install the six 6 D cell batteries as described on battery compartment cover label and replace the Battery Compartment Cover Turn scale base right side up and place on a stable flat surface so that all four feet are supported STEP 3 Figure 2 Place the Scale Base Cover 1 on top of the scale base then place the Clear Acrylic Cradle 2 on top of both pieces Align the pre drilled holes of all three parts Using the four 4 Nylon Screws 3 attach the Clear Acrylic Cradle to the scale base Note Slightly tighten all four 4 Nylon Screws before securely tightening any one Figure 1 Battery Compartment Cover amp Screw Locations Figure 2 Attachment Screw Location2. Inc
3. TEE EEEE EEEo 10 CALIBRATION oc EEE E E rrr TT errr rrr 11 TROUBLESHOOTING ssrin EE AE aaant 12 WARRANT I eisrean EE EEE A EE E 13 TABLE OF FIGURES Figure 1 Battery Compartment Cover amp Screw Locations sssssceececcccoocsosssssecececceeoosossssssssoe 4 Figure 2 Attachment Screw Locations ssssssssscececcccccocccccsssssssececeececoocssosssssssssecceececesossssssssssses 4 Figure De Dutton Display cescecscezssbeteecasessceedssecsessvstscvassseeessavessseetssousessustecvecssecuesaessscetsseucssstesecesssoues 8 Figure 4 Battery Compartment Cover amp Screw Locations cccccccccsssssssssssssssssssssccccccsssssees 9 Figure 5 Calibration Buttons 1 and Offset Potentiometer Screw 2 sssssccccsssssssssssees 11 SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 3 of 14 PACKING CHECKLIST Model SR615 Infant Scale y DESCRIPTION SCALE BASE SCALE BASE COVER CLEAR ACRYLIC CRADLE One cradle size included with scale base One of the following choices included CRADLE CLEAR ACRYLIC OPEN END 22 Standard comes with scale CRADLE CLEAR ACRYLIC CLOSED END 22 Optional CRADLE CLEAR ACRYLIC OPEN END 30 Optional CRADLE CLEAR ACRYLIC CLOSED END 30
4. 6 693 5977 or toll free in the USA and Canada at 800 654 6360 When inquiry is made please supply model and serial numbers purchase order if the scale was bought on contract and reason for return Generally deleted damaged and outdated merchandise will not be accepted for credit A minimum restocking charge of 15 will be assessed on return of current merchandise All returns are to be shipped FREIGHT PREPAID to SR Instruments Inc 600 Young Street Tonawanda NY 14150 RESTOCKING FEE e 15 fee for any scale that has been opened and used e 10 fee for any scale returned that has been ordered incorrectly or refused delivery with no model change e 5 fee if an error in ordering has been made and a different model exchanged e No fees will be charged if the scale is returned because of an error on the part of SR Instruments Inc e Noreturns accepted after 60 days SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 SRScalegs By SR Instruments Inc Page 14 of 14 Precision amp Technology in Perfect Balance SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments
5. 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 6 of 14 MAINTENANCE and CLEANING Exercise caution when cleaning the display window and infant cradle tray as both are made of clear polyester and can be scratched by abrasive cleaners Mild soap and water is recommended for general cleaning and disinfecting WARNING DO NOT use pressurized water or steam The scale system contains microprocessor circuitry and strain gauge sensors that may be adversely affected by exposure to such an environment STORAGE and TRANSPORTATION If storing this equipment for periods longer than three 3 months remove the batteries To maintain proper operation of this instrumentation storage and transport conditions should not vary outside the following conditions Relative Humidity 0 to 85 Ambient Temperature 14 F to 122 F 10 C to 50 C SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 7 of 14 SPECIFICATIONS CRADLE SIZE Clear Acrylic 22 in x 15 1 2 in 56 cm x 39 cm DISPLAY TYPE 16 Char
6. Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 1 of 14 SRScales by SR Instruments Inc Model SRO15 Infant Scale Operating and Service Manual Serial Numbers 3706 SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 2 of 14 TABLE OF CONTENTS PT OO TG UR S EE AEE EAEE 2 PACKING CHECKLIST MODEL SR615 x ccpcccoeccssvciicperscrvcetistasspsnsctacsesccvancevsctesetsecvtevevecusseesies 3 AOD TIVES UY serika R 4 REPLACEMENT PARTS AND ACCESSORIES sssssssssssssccccccccccccccccccssssssssssssssssssseees 5 SYSTEM DESCRIPTION AND INTENDED USE eeeeeeeeecceeececscessecsssessssscsssssssssssssssssssssssssse 5 MAINTENANCE AND CLEANING croisa NE E E E EO V O 6 STORAGE AND TRANSPORTATION eeeeeeecccccccccccccccccccccccccccccsccccccccsccscsssssssssssssssssssssssssssssse 6 SE UR UC A TONG waahescectaseuseusactctucentevciaciectcadsateusesstcsutucestavaivchectcadiatensessucaetucetovasvehecteadiatansissneictaces 7 Be ON BING DOIN S nE T E EEE 8 BASICSYSTEM OPERA TION casi och ca sc eaicpecice vas nied eis pea cane bcc space vaneaeavesaveauctuavsesveusveneceescesees 8 BATTERY REPLACEMENT ci E E 9 THEORY OF OFERA TION orsoni ei e aaa EE
7. acter Dot Matrix LCD DISPLAY RESOLUTION 0 01 lb 1 4 oz 0 005 kg 5 g ACCURACY _ 1 digit of displayed resolution for calibration AUTO POWER DOWN Approximately 120 seconds HOLD While active freezes display data and stores it temporarily in memory LAST WEIGHT RECALL a HOLD button to recall last stored displayed reading AVERAGING Automatic digital filter POWER SUPPLY Six 6 D cell batteries CALIBRATION Calibration is traceable to NIST standards Normal operating conditions for this product Ambient Temperature Range 68 F to 85 F 20 C to 30 C Relative Humidity Range 0 to 85 Avoid exposure to high pressure water or steam MAXIMUM WEIGHT CAPACITY 40 lb or 18 kg OPERATING CONDITIONS Storage and transportation conditions should not vary outside the following conditions Relative Humidity 0 to 85 Ambient Temperature 14 F to 122 F 10 C to 50 C Remove batteries if storing longer than three 3 months TRANSPORTATION and STORAGE SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 8 of 14 BUTTON FUNCTIONS Figure 3 Button Display The ZERO button is used to turn the scale on and to zero the system before ZERO placing a patien
8. ae STEP 7 When settings are completed Press the HOLD button to SAVE your settings or press the READ button to CANCEL Both choices will EXIT CAL mode STEP 8 Re attach plugs on the bottom of the scale CALIBRATION TOLERANCE TABLE LO APPLIED HIGH LIMIT LOAD LIMIT 4 CAUTION The integrated circuits and semiconductors on the printed circuit boards may be damaged by electrostatic discharge ESD Be sure to use proper handling precautions at all times TROUBLESHOOTING SYMPTOM REASON CORRECTIVE ACTION Check offset and verify calibration Only half of display activates Press the WEIGH button No power Check that batteries are making contact with each other and the terminals of the battery holder For additional information or assistance telephone the Service Hotline 1 800 654 6360 or e mail sri srinstruments com SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 13 of 14 WARRANTY FOUR YEAR LIMITED WARRANTY Each SRScalles system is manufactured with high quality components SR Instruments Inc warrants that all new equipment will be free from defects in material or workmanship under normal use and service for a period of four 4 years from the dat
9. e of purchase by the original purchaser Normal wear and tear injury by natural forces user neglect and purposeful destruction are not covered by this warranty Warranty service must be performed by the factory or an authorized repair station Service provided on equipment returned to the factory or authorized repair station includes labor to replace defective parts Goods returned must be shipped with transportation and or broker charges prepaid SR Instruments Inc s obligation is limited to replacement of parts that have been so returned and are disclosed to SR Instruments Inc s satisfaction to be defective The provisions of this warranty clause are in lieu of all other watranties expressed or implied and of all other obligations or liabilities on SR Instruments Inc s part and it neither assumes nor authorizes any other person to assume for SR Instruments Inc any other liabilities in connection with the sale of said articles In no event shall SR Instruments Inc be liable for any subsequent or special damages Any misuse improper installation or tampering shall void this warranty DAMAGED SHIPMENTS Title passes to purchaser upon delivery to Transportation Company Any claims for shortage or damage should be filed with the delivery carrier by purchaser RETURN POLICY All products being returned to SR Instruments Inc require a Return Goods Authorization number RGA To receive an RGA call our Technical Service Team at 71
10. f the edge of the table s surface until the Calibration Buttons are accessible underneath STEP 2 Press and hold both CAL buttons 1 simultaneously for 10 seconds The display will read HOLD TO CAL as the right hand digit counts down to enter the CAL mode STEP 3 Attach cradle Offset figure should read between 2 00 Ibs and 2 50 Ibs Adjust figure by using the Offset Potentiometer Screw 2 Fine blade screwdriver required STEP 4 When in CAL mode press the ZERO button to zero the display Continued next page SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 12 of 14 CALIBRATION CONT D STEP 5 Place a known calibrated weight traceable to NIST standards onto the weighing surface and compare it to the displayed reading Note For best results use a minimum of 10 pounds to calibrate DO NOT USE barbell weights or calibrate to a mechanical scale 0 o 5 01 W 99 1 STEP 6 Use the right hand CAL button to make corrections 5 5 01 and the left hand calibration button to make corrections to the 9 99 40 0 10 04 displayed weight The displayed value should be within 0 1 of 1498 150 the calibrated weight per the tolerance table 17 98 18 0
11. ghten screws STEP 5 Press the READ button to confirm display is working STEP 6 Zero the system Figure 4 Battery Compartment Cover amp Screw Locations SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 10 of 14 THEORY OF OPERATION SR Instruments patient weighing systems are digital scales Strain gauge force cells convert the force of an applied weight into an analog signal This signal is amplified by an operational amplifier and converted to a digital signal by an analog to digital converter The digital signal is transferred to a micro controller where it is filtered converted to appropriate units and displayed on a liquid crystal display Strain gauge force cells each contain four strain gauges mounted in a full Wheatstone bridge configuration These bridges convert the physical movement of the force cell due to the applied mass on the system into minute changes in electrical resistance These changes in resistance produce a voltage difference across the Wheatstone bridge which is amplified by the operational amplifier The amplifier is configured to current sum the output of each cell with potentiometers serving to adjust the sensitivity voltage out per unit of weight applied of eac
12. h bridge The offset potentiometer produces a small current which nulls the output of the amplifier for an unloaded system The output of the operational amplifier is digitized by the analog to digital converter The converter integrates the analog signal onto the integrating capacitor over a short interval The integrating capacitor is then discharged at a rate proportional to the reference voltage applied to the converter The residual voltage on the integrating capacitor is then multiplied by a factor and again discharged at a rate proportional to the reference voltage The residual voltage from this discharge is again multiplied by a factor and again discharged The time taken to discharge the capacitor is proportional to the voltage from the operational amplifier which is proportional to the applied load on the force cells The time is stored as a binary number in the analog to digital converter and is transferred to the micro controller when the conversion is complete The micro controller averages and filters the digital output of the analog to digital converter subtracts the value saved during the system zero operation and scales the filtered output then displays the result on the liquid crystal display The micro controller performs a rolling average of data for continuous weigh and for AutoHold the micro controller averages the data before locking in on the reading If the data variance is greater than 0 1 in the AutoHold mode the micro co
13. ntroller will reset the filter and start a new averaging period The micro controller can be placed in a calibration mode where the system can be re calibrated In the calibration mode the result of the weigh operation is scaled to match the value by adjusting the up and down calibration buttons This new calibration factor is then stored in the non volatile memory SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 11 of 14 CALIBRATION IMPORTANT CALIBRATION CHECK Qualified service personnel only should perform this procedure Load cells have no user serviceable components and should not be tampered with for any reason Re calibration is generally not required but should be verified periodically to ensure accuracy Recommendation for calibration check is at least once every 12 months or as individual maintenance policy requires Figure 5 Calibration Buttons 1 and Offset Potentiometer Screw 2 CALIBRATION PROCEDURE Figure 5 Place Scale Base upside down on countertop Remove the black hole plugs on the underside of the scale from the two 2 calibration buttons 1 and one 1 potentiometer offset screw 2 STEP 1 Turn the Scale Base upright Carefully slide the Scale Base of
14. recommended that the system be zeroed prior to each new patient SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Continued next page Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 9 of 14 BASIC SYSTEM OPERATION CONT D CONTINUOUS WEIGH In this default mode the weighing surface remains active Press the HOLD button once to lock the displayed reading and store it in memory as the last weight for recall later if needed Zero will clear memory AUTO HOLD ACTIVE PATIENTS For active patients this mode locks stores and displays the patient s weight Zero will clear locked weight The minimum weight for the AUTO HOLD mode to function is 1 10 pounds To enable AUTO HOLD mode press and hold the HOLD button for approximately five seconds until the display reads AUTO HOLD ENABLED Repeat the procedure to return to CONTINUOUS WEIGH mode BATTERY REPLACEMENT STEP 1 Display will read REPLACE BATTERIES STEP 2 Figure 4 Turn the scale over and unscrew the 7 two 2 screws from the Battery Compartment Cover J STEP 3 Remove and replace ALL six 6 D cell p batteries Refer to battery compartment cover label for NN x placement STEP 4 Replace the Battery Compartment Cover and securely ti
15. s SR Instruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2011 SR Instruments Inc Model SR615 Infant Scale Operating and Service Manual S N 3706 Part No MAN615_110210 Page 5 of 14 REPLACEMENT PARTS and ACCESSORIES PF1051 1 22 Open End Cradle PF1051 2 30 Open End Cradle PF1374 1 22 Closed End Cradle PF1374 3 30 Closed End Cradle SRC 100 Stainless Steel Mobile Cart with two 2 Locking Wheel Casters FB142058FN 1 4 20 x 5 8 Flat Nylon White Screw SYSTEM DESCRIPTION and INTENDED USE SYSTEM DESCRIPTION The SR615 Infant Scale employs the latest in microprocessor and load cell technology to provide accurate and repeatable weight data Four 4 identically matched transducers are strategically placed to ensure an accurate representation of the infant s weight regardless of weight distribution The infant s weight is displayed on a 16 character dot matrix LCD With a push of a button weight data may be viewed in either pounds decimal pounds ounces kilograms or grams These have a displayed resolution of 0 01 lb 1 4 oz 0 005 kg and 5 g INTENDED USE The SR615 Infant Scale is designed for use in pediatric applications Maximum weight capacity must not exceed 40 pounds or 18 kilograms gross weight WARNING DO NOT EXCEED MAXIMUM WEIGHT LIMIT OF 40 LB 18 KG SR Instruments Inc
16. t onto the scale system When pressed the display message will indicate CONTINUOUS WEIGH WEIGHING 0 0 LB The ZERO button will clear the memory in CONTINUOUS WEIGH or AUTO HOLD mode The READ button wakes up the display after de activation and displays weight READ data Auto power down activates after approximately 120 seconds memory To recall the last weight reading after the system has shut down press the HOLD button before pressing any other button The ZERO button will clear the held memory The MODE button allows weight data to be displayed in pounds decimal pounds ounces kilograms or grams The display mode automatically defaults to the last mode used unless manually changed roto The HOLD freezes the displayed weight and stores it temporarily away in Note Buttons are located below button names on scale base BASIC SYSTEM OPERATION SETTING SYSTEM ZERO Ensure that the scale is free and clear of any obstructions and press the ZERO button The display message will indicate HANDS OFF PLEASE WAIT WEIGHING 0 00 LB The infant may now be placed on the scale for the weighing process It is recommended that the system be zeroed before each weight Note If there are any accessories blanket diaper etc place them on the scale while zeroing the system This will ensure that the patient s NET weight will be displayed It is
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