SR Scales SRV710 Operating And Service Manual

Model SRV710W Series

Operating and Service

Manual

Serial Numbers: 1001+

Zoological Scale System

App Enabled Wireless

Model SRV710

W

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 1 of 14

S

by SR Instruments, Inc.

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series
Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 2 of 14

TABLE OF CONTENTS

TABLE OF FIGURES ......................................................................................................................2

PACKING CHECKLIST - MODEL SRV710W ...........................................................................3

ASSEMBLY.......................................................................................................................................4

REPLACEMENT PARTS AND ACCESSORIES ........................................................................5

SYSTEM DESCRIPTION AND INTENDED USE .......................................................................5

MAINTENANCE AND CLEANING ..............................................................................................6

STORAGE AND TRANSPORTATION ........................................................................................6

SPECIFICATIONS...........................................................................................................................7

BUTTON FUNCTIONS ...................................................................................................................8

BASIC SYSTEM OPERATION ......................................................................................................8

BATTERY REPLACEMENT .........................................................................................................9

THEORY OF OPERATION .........................................................................................................10

CALIBRATION ..............................................................................................................................11

TROUBLESHOOTING .................................................................................................................12

WARRANTY...................................................................................................................................13

TABLE OF FIGURES

Figure 1: Battery Compartment .................................................................................................... 4

Figure 2: LB/KG Mode Pushbutton Switch ................................................................................. 8

Figure 3: Battery Replacement ...................................................................................................... 9

Figure 4: Calibration Buttons ...................................................................................................... 11

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series



DESCRIPTION

QUANTITY

PLATFORM SCALE

1ea

PACK OF SIX (6) “AA” BATTERIES

1 ea

CALIBRATION CERTIFICATE

1 ea

WARRANTY CARD

1 ea

MANUAL

1 ea

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 3 of 14

PACKING CHECKLIST - Model SRV710W

Zoological Scale System

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series

Battery

Compartment

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 4 of 14

ASSEMBLY

ASSEMBLY STEPS

STEP 1: Unpack the Scale Platform (1) and check parts against the PACKING CHECKLIST. If there

are any missing or damaged parts, call the Service Hotline at: 1-800-654-6360.

STEP 2: Place the Platform upside-down on the floor and remove the cover on the Battery

Compartment. Install six (6) “AA” cell batteries according to BATTERY REPLACEMENT
instructions.

STEP 3: Turn platform right side-up and press the “DISPLAY” button to confirm display is working.

Figure 1: Battery Compartment

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series

Part #

Description

FK5210039

RUBBER LEVELING FOOT

MAN716W

MANUAL

WARNING

DO NOT EXCEED

MAXIMUM WEIGHT LIMIT OF

2000 LB / 907 KG

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 5 of 14

REPLACEMENT PARTS and ACCESSORIES

SYSTEM DESCRIPTION and INTENDED USE

SYSTEM DESCRIPTION

The SRV710W Zoological Scale employs the latest in microprocessor and load cell technology to
provide accurate and repeatable weight data. Four (4) identically matched Load Cells are
environmentally sealed and strategically placed to ensure an accurate representation of the
subject’s weight.

The SRV710W Zoological Scale derives its power from six (6) each “AA” batteries.
With the push of a button, weight is displayed with a displayed resolution of 0.2 pounds or 0.1

kilograms.

The SRV710W Zoological Scale is equipped with a Bluetooth wireless module. By waking the

scale up with the “weigh” button the wireless feature is turned on. Then use the free SR Scales app

(Google Play store) to connect with the scale to allow for remote wireless operation.

INTENDED USE

The SRV710W Zoological Scale is designed for use with hoofed animals, and other large animals.
It is a preferred means of gathering weight data up to 2000 pounds or 907 kilograms.

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series

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.

WARNING

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 6 of 14

MAINTENANCE and CLEANING

The SRV710W readout is built into the
scale platform. Exercise caution when
cleaning the display window as it is made
of clear acrylic and can be scratched by
abrasive cleaners. The waterproof seal
can also be damaged. We recommend
mild soap and water for general cleaning
and disinfecting.

STORAGE and TRANSPORTATION

STORAGE

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).

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series

MAXIMUM WEIGHT

CAPACITY

2000 lb. / 907 kg. (Minimum 10 lb.)

PLATFORM SIZE

36 in x 54 in x 2 ¾ in
91 cm x 137 cm x 7 cm

DISPLAY TYPE

LCD

DISPLAY RESOLUTION

0.2 lb / 0.1 kg

ACCURACY

0.2% +/- 1 digits of displayed resolution for calibrated
range

AUTO ZERO

One button operation

STABILIZATION TIME

Five (5) seconds

AUTO POWER DOWN

After five (5) minutes

BLUETOOTH ON-TIME

5 minutes from last button press

AVERAGING

Automatic digital filter

POWER SUPPLY

Six (6) “AA” cell batteries

CALIBRATION

Calibration is traceable to NIST standards

OPERATING CONDITIONS

Normal operating conditions for this product: Ambient
Temperature Range: 40F to 95F (5C to 35C) Relative

Humidity Range: 0% to 85%.
Avoid exposure to high-pressure water or steam.

TRANSPORTATION AND

STORAGE

Storage and transport conditions should not vary outside
the following conditions: Relative Humidity 0% to 85%,
Ambient Temperature 14F to122F (-10C to +50C).
Remove batteries if storing longer than three (3) months.

BLUETOOTH REQUIREMENTS

Refer to the SR Scales App on the Google Play store for
further information.

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 7 of 14

SPECIFICATIONS

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series

“LB/KG MODE”

Pushbutton

Switch

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 8 of 14

BUTTON FUNCTIONS

The “DISPLAY” button is used to turn the system on and display the subject’s weight.
The “DISPLAY” button is also used to zero the system by pressing and holding the “DISPLAY”

button for 2-3 seconds.

LB/KG MODE

The “LB/KG MODE” Toggle Button (Figure 2) allows weight data to be viewed in either pounds
or kilograms, displayed in a resolution of 0.2 pounds or 0.1 kilograms.

The “LB/KG MODE” Pushbutton is located on the display box on the underside of the scale.
Select the mode for weighing with this Toggle Button.

Figure 2: LB/KG Mode Pushbutton Switch

BASIC SYSTEM OPERATION

Ensure that the scale is free and clear of any obstructions before operating.
Press the “DISPLAY” button and hold it for 2-3 seconds. The display will read “0.0” and be

ready for weighing.
When a mat or pad is to be used on the scale platform, the weight of the pad must be tared out.

Place the mat on the platform, then press and hold the “DISPLAY” button for 2-3 seconds. The
display will read “0.0”.

Note: The display will automatically shut down after five minutes. The zero (TARE)
will be stored in memory.

Assist the animal on the scale platform; its weight will appear on the display.
Note: The display will automatically shut down after five minutes. Press the

“DISPLAY” button to restart.
It is recommended that the system be zeroed prior to each subject being weighed.

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series

Battery Cover

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 9 of 14

BATTERY REPLACEMENT

Figure 3: Battery Replacement

REPLACING BATTERIES

When battery replacement is needed, an indicator will appear on the display.

STEP 1: Turn the platform over and remove the four screws on the Battery Cover.
STEP 2: Remove and replace the six (6) “AA” cell batteries. Replace the screws in the Battery Cover.

NOTE: TIGHTEN SCREWS ONLY UNTIL RUBBER SEAL STARTS TO COMPRESS.

STEP 3: Press the “DISPLAY” button to confirm display is working.
STEP 4: Position the scale back into weighing position.
STEP 5: Zero the system. Scale is ready for use.

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series
Service Manual - S/N 1001+
Part No. MAN710W_150921 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 each bridge.

The output of the operational amplifier is digitized by the analog to digital converter.

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.

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series

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. The recommendation for calibration check is at least
once every 12 months, or as individual maintenance policy requires.

Continued next page

S4

CAL

Display

Lower Lim it Applied W eight Upper Lim it

99.8 100 100.2

199.6 200 200.4

249.5 250 250.5

399.2 400 400.8

499.0 500 501.0

748.5 750 751.5

998.0 1000 1002.0

1497.0 1500 1503.0

1996.0 2000 2004.0

Calibration Tolerance C hart

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 11 of 14

CALIBRATION

STEP 1: Select known calibrated weights, traceable to NIST.
NOTE: CALIBRATED WEIGHT SHOULD BE EQUAL TO OR GREATER THAN THE

MAXIMUM PATIENT WEIGHT, NOT TO EXCEED THE MAXIMUM CAPACITY

OF THE SCALE. DO NOT USE UNCALIBRATED WEIGHTS.
STEP 2: Remove the two (2) screws holding the display housing to the platform
STEP 3: Pull the display out from under the platform and remove the eight (8) screws from the display

box cover pictured in Figure 3.

STEP 4: Press the calibration button. The display will read “CAL”.
STEP 5: Press button “S4” to scroll through menu options until “FULL” is displayed. Press the

DISPLAY button.
STEP 6: Set the “FULL” value to the selected weight from Step 1. Use the DISPLAY button to select

digit positions and use button S4 to change the value.
STEP 7: When finished, the display will read “SAVE”. Press the DISPLAY button to save, or press

button S4 then DISPLAY to “QUIT”.
STEP 8: Press S4 to scroll to the menu option “2 PT” and press the DISPLAY button.

Figure 4: Calibration Buttons

STEP 9: Ensure nothing is in contact with the platform then press the DISPLAY button when the

display reads “ZERO”.

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series

SYMPTOM

REASON/CORRECTIVE ACTION

Weight reading is much lower than
expected.

Check that the platform is clean underneath, stand on
each of the four corners to see if one corner is not
weighing correctly.

For additional information or assistance, telephone our Service Hotline: [phone]

or e-mail: [e-mail]

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.

Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 12 of 14

CALIBRATION (con’d)

STEP 10: When the display reads “FULL”, place the weight from Step 1 on the platform and press the

DISPLAY button.
STEP 11: Press the DISPLAY button once more to save. To exit without saving, press S4 to select

“QUIT”, then press the DISPLAY button
STEP 12: When finished making adjustments, remove all weight from the scale.
STEP 13: Replace the display box cover and securely tighten screws. Re-attach display to platform and

securely tighten screws.

NOTE: TIGHTEN SCREWS ONLY UNTIL RUBBER SEAL STARTS TO COMPRESS.
STEP 14: Press and hold the DISPLAY button to zero the platform. When the display indicates “0.0”,

place the calibrated weight on the scale again and check against the weight displayed. If the

weight is not correct, recalibrate. (If calibration cannot be accomplished, call the Service

Department.)

TROUBLESHOOTING

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series
Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 13 of 14

WARRANTY

TWO (2) YEAR LIMITED WARRANTY

Each S 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 two (2) years from the date 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
warranties, 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 716-693-5977 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

 15% fee for any scale that has been opened and used
 10% fee for any scale returned that has been ordered incorrectly or refused delivery with

no model change

 5% fee if an error in ordering has been made and a different model exchanged
 No fees will be charged if the scale is returned because of an error on the part of SR

Instruments, Inc.

 No returns accepted after 60 days.

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Model SRV710W Series
Service Manual - S/N 1001+
Part No. MAN710W_150921 Page 14 of 14

S

By S Instruments, Inc.

Precision & Technology in

SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150

Tel: [phone] Fax: [phone] URL: www.srscales.com

email: [e-mail] Copyright 2015 SInstruments, Inc.

Perfect Balance

®