SR Instruments SRScales SRV713W Service manual

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 1 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
S
by SR Instruments, Inc.
Operating and Service
Manual
Marine Scale System
App Enabled Wireless
Model SRV713W

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 2 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
TABLE OF CONTENTS
TABLE OF FIGURES......................................................................................................................2
PACKING CHECKLIST - MODEL SRV713W ...........................................................................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

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 3 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
PACKING CHECKLIST - Model SRV713W
Marine Platform Scale

DESCRIPTION
QUANTITY
PLATFORM SCALE
1ea
PACK OF SIX (6) “AA” BATTERIES
1 ea
CALIBRATION CERTIFICATE
1 ea
WARRANTY CARD
1 ea
MANUAL
1 ea

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 4 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
ASSEMBLY
ASSEMBLY STEPS
STEP1: Unpack the Marine Scale Platform (1) and check parts against the PACKING CHECKLIST.
If there are any missingor damaged parts, call the Service Hotline at: 1-800-654-6360.
STEP2: Place the Platform upside-down on the floor and remove the cover on the Battery
Compartment.
STEP3: Install six (6) “AA” cell batteries and select desired units of weight to be displayed with
(LB/KG switch) according to BATTERY REPLACEMENT instructions.
STEP4: Turn platform right side-up and press the “DISPLAY” button to confirm displayis working.
Figure 1: Battery Compartment
Battery
Compartment

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 5 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
REPLACEMENT PARTS and ACCESSORIES
SYSTEM DESCRIPTION and INTENDED USE
SYSTEM DESCRIPTION
The SRV713W Marine Platform 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 SRV713W Marine Platform 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 SRV713W Marine Platform 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 SRV713W Marine Platform Scale is designed for use with marine mammals, pinipeds, and
other large animals. It is a preferred means of gathering weight data up to 2000 pounds or 907
kilograms.
Part #
Description
FK5210039
RUBBER LEVELING FOOT
MAN713W
MANUAL
WARNING
DO NOT EXCEED
MAXIMUM WEIGHT LIMIT OF
2000 LB / 907 KG

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 6 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
MAINTENANCE and CLEANING
The SRV713W 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).
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

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 7 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
SPECIFICATIONS
MAXIMUM WEIGHT
CAPACITY
2000 lb. / 907 kg. (Minimum 10 lb.)
PLATFORM SIZE
48 in x 72 in x 2 ¾ in
122 cm x 183 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.

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 8 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
“LB/KG MODE”
Pushbutton
Switch
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 within the battery compartment 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.

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 9 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
BATTERY REPLACEMENT
Figure 3: Battery Replacement
REPLACING BATTERIES
When battery replacement is needed, an indicator will appear on the display.
STEP1: Turn the platform over and remove the four screws on the Battery Cover.
STEP2: Remove and replace the six (6) “AA” cell batteries.
STEP3: Press the “DISPLAY” button to confirm display is working. Verify that the desired units of
weight (LB/KG) are active.
STEP4: Replacethe screws in the BatteryCover.
NOTE: TIGHTEN SCREWS ONLY UNTIL RUBBER SEAL STARTS TO COMPRESS.
STEP5: Position the scale back into weighingposition.
STEP6: Zero the system. Scale is ready for use.
Battery
Cover

Model SRV713W Series
Operating and Service Manual
Part No. MAN713W_210526 Page 10 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2021 SInstruments, Inc.
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.