SR Instruments SRScales SRV949 Service manual

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 1 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
S
by SInstruments, Inc.
Operating and Service
Manual
Model SRV949
Portable Platform Scale

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 2 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
TABLE OF CONTENTS
TABLE OF FIGURES.................................................................................................................2
PACKING CHECKLIST –MODEL SRV949............................................................................3
ASSEMBLY.................................................................................................................................4
SYSTEM DESCRIPTION AND INTENDED USE....................................................................5
STORAGE AND TRANSPORTATION.....................................................................................5
CLEANING AND DISINFECTING ...........................................................................................6
SPECIFICATIONS......................................................................................................................7
BUTTON FUNCTIONS...............................................................................................................8
BASIC SYSTEM OPERATION..................................................................................................9
BATTERY REPLACEMENT.....................................................................................................9
CALIBRATION.........................................................................................................................10
CALIBRATION CONT’D.........................................................................................................12
TROUBLESHOOTING.............................................................................................................12
WARRANTY .............................................................................................................................13
TABLE OF FIGURES
Figure 1: Assembled SRV949 ....................................................................................................4
Figure 2: Battery Compartment................................................................................................4
Figure 3: Button Display............................................................................................................8
Figure 4: Calibration Tolerance Table....................................................................................10
Figure 5: Calibration Button...................................................................................................11
Figure 6: Button Display..........................................................................................................11

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 3 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
PACKING CHECKLIST –Model SRV949
Portable Platform Scale

DESCRIPTION
QUANTITY
PORTABLE PLATFORM SCALE
1 ea
AA 1.5-VOLT ALKALINE BATTERIES
6 ea
CALIBRATION CERTIFICATE
1 ea
WARRANTY CARD
1 ea
MANUAL
1 ea

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 4 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
ASSEMBLY
To install included six (6) AA 1.5-volt alkaline batteries, follow steps below:
STEP 1: Unlatch tab on the Battery Compartment cover on bottom of scale (figure 2).
STEP 2: Insert batteries according to instructions on the Battery Compartment holder.
STEP 3: Replace Battery Compartment cover.
Figure 1: Assembled SRV949
Figure 2: Battery Compartment
Continued next page

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 5 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
REPLACEMENT PARTS AND ACCESSORIES
SYSTEM DESCRIPTION AND INTENDED USE
SYSTEM DESCRIPTION
The SRV949 Portable Platform Scale is a low profile design, 2 in. height, which allows the animal
easy step access. The SRV949 Scale can be used in a fixed location or as a portable scale. The
Scale employs the latest in microprocessor and load cell technology to provide accurate and
repeatable weight data. Six (6) identically matched transducers are strategically placed to ensure
an accurate representation of the animal’s weight.
The animal’s weight is displayed on an LCD screen. With a push of a button, weight data may be
viewed in either pounds or kilograms.
INTENDED USE
The SRV949 Portable Platform Scale is a lightweight portable scale designed for use as a
weighing system for animals not exceeding 400 pounds or 182 kilograms, gross weight. Please
read the following warnings to avoid injury to the animal or attendant.
STORAGE and TRANSPORTATION
STORAGE
If storing this equipment for periods longer than three (3) months, remove the batteries. To
maintain proper operation of this instrument, 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).
TRANSPORTATION
The SRV947 Portable Platform Scale has four (4) recessed handles on the underside of the scale
for easy portability.
Part #
Description
CA9261
Display Label
FK2284T51
Replacement Foot
WARNING
DO NOT USE FOR ANIMAL TRANSPORT
DO NOT EXCEED MAXIMUM LIMIT OF 400 LBS / 182 KG

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 6 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
CLEANING and DISINFECTING
CLEANING
Use water and mild detergent to clean scale surfaces.
Do not use abrasive material to disinfect / clean scale surfaces to prevent damage to the
surface finish.
To clean the display / user interface:
Wipe surface with clean soft cloth dampened with water and then dry with clean soft cloth.
Do not spray liquid directly onto interface surfaces. Use only a damp cloth.
To clean patient contact areas:
Rinse patient contact areas, keeping water away from the display / user interface. Pat dry
with a clean cloth, or allow to air dry.
DISINFECTION
Follow manufacturer’s instruction on the proper use of commercially available
disinfectants.
Disinfectant solutions with 1% sodium hypochlorite or 70% isopropyl alcohol are suitable
for display / user interface and other scale contact surfaces.
To disinfect the display / user interface:
Use a soft cloth dampened with disinfectant or a damp disposable disinfectant cloth. Cloth
cannot be dripping wet.
After disinfecting, use a soft cloth dampened with clean water and dry with a soft clean
cloth to prevent buildup of material on display.
Do not spray liquid directly onto interface surfaces. Use only a damp cloth.
To disinfect patient contact areas:
Apply disinfectant solution to patient contact areas, keeping excess moisture away from
the display / user interface.
Patient contact area should remain wet with disinfectant solution for six minutes. Pat dry
with a clean cloth, or allow to air dry.
WARNING: EXPOSURE TO EXCESSIVE LIQUID WILL DAMAGE USER
INTERFACE KEYPAD.
WARNING: DO NOT USE PRESSURIZED WATER OR STEAM. THE SCALE
SYSTEM CONTAINS ELECTRONIC COMPONENTS THAT MAY BE
ADVERSELY AFFECTED BY EXPOSURE TO SUCH AN
ENVIRONMENT.

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 7 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
SPECIFICATIONS
MAXIMUM WEIGHT CAPACITY
400 lb / 182 kg
PLATFORM SIZE
24 in x 60 in x 2 in
(61 cm x 152 cm x 5 cm)
DISPLAY TYPE
1.0”LCD display with 5 active digits
DISPLAY RESOLUTION
0.2 lb / 0.1 kg
ACCURACY
0.2% +/- 2 digits of displayed resolution for calibrated
range
AUTO ZERO
One button operation
AUTO POWER DOWN
Approximately 120 seconds
AVERAGING
Automatic digital filter
POWER SUPPLY
Six (6) AA 1.5 volt alkaline batteries
CALIBRATION
Calibration is traceable to NIST
OPERATING CONDITIONS
Normal operating conditions for this product:
Ambient Temperature Range: 68F to 85F (20C to
30C), Relative Humidity Range: 0%-85%. Avoid
exposure to high-pressure water or steam.
TRANSPORT 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.

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 8 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
BUTTON FUNCTIONS
ZERO/WEIGH
The “ZERO/WEIGH” button is used to zero the system before placing a
patient onto the scale system. Ensure that nothing is in contact with the
weighing surface during this procedure. The display will read “0.0 LB”(or
KG). The button also wakes up the display and shows the patient’s weight if it
should Auto Power Down before the weighing process is done.
HOLD/RECALL
The “HOLD/RECALL” button freezes the displayed weight and stores it away
in memory. Press “HOLD/RECALL” to store the weight into memory.
To recall last weight reading, press “HOLD/RECALL”button once scale has
shut down.
LB/KG
Weight data may be viewed in either pounds or kilograms. Pressing the
“LB/KG” button allows the operator to toggle between the two readings.
Pounds are displayed in a resolution of 0.2, kilograms are displayed in a
resolution of 0.1.
Figure 3: Button Display

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 9 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
BASIC SYSTEM OPERATION
SETTING SYSTEM ZERO
Make sure the scale is free and clear of any obstructions. Press and hold the
“ZERO/WEIGH” button to zero the system. In a few seconds, the display will
read “0.0 LB”(or KG). It is recommended that the system be zeroed prior to each
new patient.
After the scale has been set to zero, position the patient on the scale. Display will indicate the
patient’s weight in either pounds or kilograms.
In this default mode, the weighing surface remains active. If scale shuts down, press the
“ZERO/WEIGH” button once to wake display and take reading.
HOLD/RECALL
The scale display is designed to automatically lock the reading on the display,
and store the reading in memory, once the weight is stable. If scale cannot lock
in reading due to patient movement, press the “HOLD/RECALL” button to
automatically lock the display and store the reading.
To return to WEIGH mode when finished, press the “ZERO/WEIGH” button once. The display
will become active.
Once the scale has shut down, the last stored weight can be recalled by pressing the
“HOLD/RECALL” button. Last stored weight will be displayed until the scale shuts down or the
“ZERO/WEIGH” button is pressed.
BATTERY REPLACEMENT
The Portable Platform Scale contains six (6) AA alkaline 1.5-volt batteries. The low battery
indicator is displayed when the battery power is insufficient to power the scale.
Refer to Assembly Instructions (Figure 2).

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 10 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
CALIBRATION
NOTE: Ensure that nothing is in contact with the scale system during this procedure. Remove
hands from the system when noting the displayed calibration results.
CHECKING CALIBRATION
STEP 1: Select two (2) known calibrated weights, traceable to
NIST.
NOTE: The first weight should be at least 200 pounds (half of the
maximum scale capacity). The second weight should be less than
half of the first weight. DO NOT USE barbells or uncalibrated
weights.
STEP 2: Zero the scale by pressing and holding “ZERO /
WEIGH”button.
STEP 3: Place the first calibrated weight on the scale. Wait for scale
to stabilize; note scale reading. Remove weight.
STEP 4: Place second calibrated weight on scale. Wait for scale to stabilize; note scale reading.
Remove weight.
STEP 5: The scale readings for both weights should be within the Calibration Tolerance Table
plus or minus one digit of displayed resolution (Figure 4).
CALIBRATION
TOLERANCE TABLE
LOW
LIMIT
APPLIED
LOAD
HIGH
LIMIT
20.0
20.0
20.0
50.0
50.0
50.0
99.8
100.0
100.2
199.6
200.0
200.4
299.4
300.0
300.6
399.2
400.0
400.8
Figure 4: Calibration
Tolerance Table
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.

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 11 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
CALIBRATION cont’d
SETTING CALIBRATION
NOTE: Ensure that nothing is in contact with the scale system during this procedure and that
all six (6) feet are touching a level surface. Remove hands from the system when noting the
displayed calibration results. (Use a known calibrated weight traceable to NIST.)
STEP 1: Remove the display cover from bottom of scale
STEP 2: Press the “ZERO/WEIGH” button to turn the scale on.
STEP 3:Press “Lb/Kg”button and toggle to select lb.
STEP 4:Press the left button on rear of display. Display will read “CAL”
STEP 5: Toggle the “ZERO/WEIGH” button to read “FULL” then press “HOLD/RECALL”.
STEP 6: Display will read “440.0”, set this value to the value of the selected weight
Press “HOLD/RECALL” to select a digit position
Press the “ZERO/WEIGH” button to change the value of the digit
When display reads “SAVE”, press the “HOLD/RECALL” button to cycle through
“Savd” and return to “CAL”
STEP 7: Toggle the “ZERO/WEIGH” button to read “2 Pt” then press “HOLD/RECALL”.
Figure 5: Calibration Button
Figure 6: Button Display
Continued next page
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.

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 12 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
CALIBRATION cont’d
STEP 8: Display will read “ZERO”. Ensure no weight is on the platform, then press
“HOLD/RECALL”
STEP 9: Display will read “FULL”. Add the selected weight to the platform. Wait for the
weight to stabilize, then press “HOLD/RECALL”
STEP 10: Press “HOLD/RECALL” to cycle through the number “.8037”. DO NOT CHANGE
THIS NUMBER
STEP 11: When display reads “SAVE”, press the “HOLD/RECALL” button to cycle through
“Savd” and return to “CAL”
STEP 12: Calibration is completed. Press the left button on rear of display to return to run mode.
Allow time for scale to turn off.
TROUBLESHOOTING
SYMPTOM
REASON/CORRECTIVE ACTION
Display reads LOW
Battery needs to be replaced.
Display reads LOW
Ensure scale is on a level surface. Check to make
sure all six feet are touching ground and ensure
that nothing is touching bottom or sides of
platform.
For additional information or assistance, phone 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.

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 13 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
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. Purchaser should file any
claims for shortage or damage with the delivery carrier and should refuse any shipment that has
obvious external damage.
RETURN POLICY
All products being returned to SR Instruments, Inc. require a Return Goods Authorization number
(RGA). To receive an RGA, call our Customer Service at 716-693-5977 ext 103 or toll-free in the
USA and Canada at 800-654-6360 ext 103.
When inquiry is made, please supply model and serial numbers, purchase order 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 unless scale
is returned because of SR error.
No returns will be accepted after 30 days.
All returns are to be shipped FREIGHT PREPAID to: SR Instruments, Inc., 600 Young Street,
Tonawanda, NY 14150.
RESTOCKING FEE
15% fee will be assessed on return of current merchandise
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 30 days.

Model SRV949 24 X 60 Platform Scale
Operating and Service Manual
Part No.: MAN949_220429 Page 14 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [e-mail] Copyright 2022 S Instruments, Inc.
S
By SInstruments, Inc.
Precision & Technology in
Perfect Balance®