SR Instruments SRScales SRV947R-BT Manual de servicio

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 1 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

SRV947R-BT

REMOTE DISPLAY

PLATFORM SCALE

APP ENABLED WIRELESS

by SR Instruments, Inc.

Operating and Service

Manual

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 2 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

TABLE OF CONTENTS

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

PACKING CHECKLIST –MODEL SRV947R-BT.....................................................................3

ASSEMBLY.......................................................................................................................................3

SYSTEM DESCRIPTION AND INTENDED USE.......................................................................4

STORAGE AND TRANSPORTATION ........................................................................................4

CLEANING AND DISINFECTING...............................................................................................5

SPECIFICATIONS...........................................................................................................................6

BUTTON FUNCTIONS...................................................................................................................7

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

SR SCALES APP..............................................................................................................................9

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

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

TROUBLESHOOTING.................................................................................................................15

NOTES.............................................................................................................................................16

DISPLAY MOUNTING TEMPLATE..........................................................................................17

TABLE OF FIGURES

Figure 1: SRV947R-BT Button Label...........................................................................................7

Figure 2: Button Functions.............................................................................................................9

Figure 3: Calibration Button ........................................................................................................11

Figure 4: Select and Toggle Button..............................................................................................11

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 3 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

PACKING CHECKLIST –Model SRV947R-BT

Remote Display Platform Scale

ASSEMBLY

STEP 1: Unpack the scale system 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: Determine installation location for scale and display, keeping in mind the display cable

length is six (6) feet and the display power cord length is four (4) feet. The display may lay flat on

a desk or end table. If desired, provisions for wall mount have been incorporated, and can be

accomplished in the manner described below.

A. The display should be installed by qualified personnel. The mounting hardware provided

will cover most wall applications.

B. Determine a position on the wall comfortable to the user. Mark the location of the two (2)

mounting holes on the wall (holes are spaced 2.5” on center apart) using the template

provided on page 16.

C. Drill the two (2) pilot holes, no larger than ¼” diameter in the locations marked. Install the

two (2) self-drilling screw anchors.

D. Install the two (2) #8 x 1” flat head screws supplied, leaving approximately ¼” projecting

from the wall.

STEP 3: Connect signal cable to the underside of the platform.

STEP 4: Place SRV947R-BT scale system on a flat, hard floor surface. Ensure all six feet of the

scale are in contact with the floor and scale does not rock.

NOTE: Scale should not be placed on carpet or uneven floor surfaces as this may interfere with

scale accuracy.

STEP 5: Connect the display cable to the scale, then connect the power cable to the display and

plug power adapter into wall.



DESCRIPTION

QUANTITY

SCALE BASE

1 ea.

SCALE DISPLAY

1 ea.

MOUNTING HARDWARE

1 ea.

AC WALL POWER SUPPLY (MEDICAL GRADE)

1 ea.

CERTIFICATE OF CALIBRATION

1 ea.

MANUAL

1 ea.

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 4 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

SYSTEM DESCRIPTION AND INTENDED USE

SYSTEM DESCRIPTION

The SRV947R-BT Portable Platform Scale is a low profile design, 2 in. height, which allows the

animal easy step access. The SRV947R-BT 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 patient’s weight.

The patient’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 SRV947R-BT 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 SRV947R-BT Portable Platform Scale has four (4) recessed handles on the underside of the

scale for easy portability.

WARNING

DO NOT USE FOR ANIMAL TRANSPORT

DO NOT EXCEED MAXIMUM LIMIT OF 400 LBS / 182 KG

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 5 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

CLEANING and DISINFECTING

CLEANING

To clean the display / user interface and other scale contact areas:

Use a soft cloth dampened with water and mild detergent to clean scale surfaces.

Wipe surface with clean soft cloth dampened with water and then dry with clean soft cloth.

Do not use abrasive materials to clean scale surface to prevent damage to the surface

finish.

Do not spray liquid directly onto scale surfaces. Use only a damp cloth.

DISINFECTION

To disinfect the display / user interface and other scale contact areas:

Use a soft cloth dampened with disinfectant or a damp disposable disinfectant cloth. Cloth

cannot be dripping wet. 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.

After disinfecting, use a soft cloth dampened with clean water and dry with a soft clean

cloth to prevent buildup of material on scale finish.

Do not use abrasive material to disinfect / clean scale surfaces to prevent damage to the

surface finish.

Do not spray liquid directly onto scale surfaces. Use only a damp cloth.

WARNING: DO NOT SPRAY CLEANING SOLUTION OR LIQUIDS DIRECTLY

ON SURFACES TO BE CLEANED.

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 SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 6 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

SPECIFICATIONS

MAXIMUM WEIGHT CAPACITY

400 lb / 182 kg

PLATFORM SIZE

24 in x 48 in x 2 in

(61 cm x 122 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 WEIGH

Scale will automatically turn on and lock in on a stable

weight.

AVERAGING

Automatic digital filter

POWER SUPPLY

AC Wall Power Supply (Medical Grade)

CALIBRATION

Calibration is traceable to NIST standards

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.

BLUETOOTH REQUIREMENTS

Refer to the SR Scales App on the Google Play store

for further information. Minimum requirements for an

OS level of android device are listed at the Google play

store

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 7 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

MODE

ZERO

HOLD/

RECAL

BUTTON FUNCTIONS

Figure 1: SRV947R-BT Button Label

The “ZERO/WEIGH” button is used to clear the Recall memory and start a new

weighing cycle. Press and hold for 3 seconds to zero the display.

The “MODE” button is used to select pounds or kilograms.

The “HOLD/RECALL” button is used to “lock in” the weight currently displayed,

or to recall the last saved weight, if nothing is on the scale platform.

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 8 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

BASIC SYSTEM OPERATION

TURNING SYSTEM ON

Make sure the scale is free and clear of any obstructions and all six feet are touching a level

surface. Press the “ZERO” button and hold for 3 seconds. The display will read “ZERO” then

display “0.0” when system is ready for weighing.

UNIT

Press the “MODE” button to toggle between pounds or kilograms. The system will remain in the

same mode as last used unless manually changed.

WEIGH

The “WEIGH” button is used to clear the “Recall” memory and start a new weighing cycle.

HOLD/RECALL

The “HOLD/RECALL” button is used to “lock in” and store the weight currently displayed in

system memory. With no weight on the platform pressing the button again will recall the last

stored weight and display it for 15 seconds.

AUTOHOLD

With autohold enabled, when the system detects a stable weight, that value will be stored in

system memory. This value can later be recalled by pressing the “HOLD/RECALL” button with

no weight on the platform.

SCREEN DISPLAYED SYMBOLS

Scale is zeroed and stabilized

MEM Weight is locked in memory (next stable weight will override memory).

Applied weight load has stabilized

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 9 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

SR SCALES APP

Use the free SR Scales app (Google Play store) to connect with the scale from any Android device

to allow for remote wireless operation.

Use your Android device to display weight and control the SRV947R-BT scale functions

(Figure 2). Ensure your remote display indicates “CONNECTED” before use.

The “WEIGH” button will display weight in pounds or kilograms as selected.

The “Held Wt” button allows access to the last stable weight that was achieved.

The “ZERO” button is used to zero the system.

The “KILOS” button allows weight data to be viewed in kilograms, displayed in a resolution of

0.1 kilograms.

The “POUNDS” button allows weight data to be viewed in pounds, displayed in a resolution of

0.2 pounds.

Figure 2: Button Functions

Model SRV947R-BT 24 X 48 Remote Display Platform

Operating and Service Manual

Part No. MAN947R-BT_210610 Page 10 of 18

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

Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com

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 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 Whetstone-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 Whetstone-bridge, which is amplified by the operational amplifier.

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 averages the data before locking in on the reading.

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