SR Instruments SR7000 i Wall Mount Platform Scale Operating and Service Manual
Below you will find brief information for Wall Mount Platform Scale SR7000 SR7000i. This scale system employs the latest in microprocessor and load cell technology to provide accurate and repeatable weight data. The SR7000i low power microprocessor circuitry is powered by a UL recognized AC wall power supply. Six (6) alkaline “D” cell auxiliary batteries provide scale system backup power. The patient’s weight is displayed on a 16-character dot matrix LCD w/LED backlight. The weight data may be viewed either in pounds or kilograms with a displayed resolution of 0.1 for each.
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Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
S
by S Instruments, Inc.
Page 1 of 16
Operating and Service
Manual
Wall Mount Platform Scale
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
TABLE OF CONTENTS
Page 2 of 16
TABLE OF FIGURES
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
PACKING CHECKLIST
SR7000i Wall Mount Platform Scale
DESCRIPTION
PLATFORM SCALE
MOUNTING HANGER AND HARDWARE
PACKAGE OF SIX (6) “D” CELL BATTERIES
AC POWER SUPPLY
CALIBRATION CERTIFICATE
WARRANTY CARD
MANUAL
Page 3 of 16
QUANTITY
1 ea
1 ea
1 ea
1 ea
1 ea
1 ea
1 ea
Figure 1: Wall Hanger
ASSEMBLY
STEP 1: Unpack the scale system and check parts against the PACKING CHECKLIST. If there are any missing or damaged parts, please call the service hotline at 1-800-654-6360.
STEP 2: To mount the SR7000i Wall Mount Platform Scale use the Wall Hanger (Figure 1) supplied with the scale.
NOTE: The Wall Hanger should be installed by qualified personnel.
STEP 3: Mount the Wall Hanger by placing the SR7000i scale in an upright position against the wall at the location for installation. Place the SR7000i wall frame (3” x 1”) cross member into the channel of the Wall Hanger.
NOTE: The Wall Hanger is not intended to support the load of the scale. The scale frame must be supported by the floor. Ensure the hanger holes are located at the top as shown in Figure 1.
Continued next page
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908 Page 4 of 16
ASSEMBLY cont’d
STEP 4: Position the Wall Hanger so that the wall frame cross member is centered in the Wall
Hanger and the Wall Hanger is pressed against the bottom of the cross member.
STEP 5: Using the Wall Hanger as a template, mark the location of the four (4) Wall Hanger holes on the wall.
STEP 6: Remove the Wall Hanger and drill four (4) pilot holes, no larger than ¼” diameter in the locations marked. Install the four (4) Self Drilling, Screw Anchors.
STEP 7: Position the Wall Hanger on the wall frame cross member. Screw the Wall Hanger to the screw anchors using the four (4) Phillips #8 x 1” Flat Head screws supplied.
STEP 8: Remove the battery insulator strip.
REPLACEMENT PARTS and ACCESSORIES
Part #
FRTP211C1
FRMW173K
Description
Paper, thermal printer 58mm (15 rolls)
AC Power Supply
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
SYSTEM DESCRIPTION and INTENDED USE
SYSTEM DESCRIPTION
Page 5 of 16
The SR7000i Wall Mount Platform Scale system 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 patient’s weight.
The SR7000i low power microprocessor circuitry is powered by an UL recognized AC wall power supply. Six (6) alkaline “D” cell auxiliary batteries provide scale system backup power.
The patient’s weight is displayed on a 16-character dot matrix LCD w/LED backlight. The weight data may be viewed either in pounds or kilograms with a displayed resolution of 0.1 for each.
The SR7000i Wall Mount Platform Scale system has a 24” x 40” (61 cm x 101.6 cm) platform weighing surface.
The scale system has a programmable Automatic Power Down (APD) for adjusting scale on-time.
INTENDED USE
The SR7000i Wall Mount Platform Scale system is specifically designed for weighing ambulatory and nonambulatory wheelchair bound patients and is a preferred means of gathering patient weight data of up to 1000 pounds or 454 kilograms. Scale is not intended to be run solely on batteries.
WARNING
DO NOT EXCEED
MAXIMUM WEIGHT LIMIT OF
1000 LB / 454 KG
MAINTENANCE and CLEANING
SR7000i Wall Mount Platform Scale system is made of powder-coated aluminum.
WARNING
Exercise caution when cleaning the display window as it is made of clear polyester and can be scratched by abrasive cleaners. Mild soap and water is recommended for general cleaning and disinfecting.
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
STORAGE
If storing this equipment for periods longer than three (3) months, remove the batteries and store in the upright position to prevent damage to the hydraulic cylinders. 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: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
SPECIFICATIONS
MAXIMUM WEIGHT CAPACITY
1000 lb or 454 kg
Page 6 of 16
PLATFORM SIZE
24 in x 40 in (61 cm x 101.6 cm)
DISPLAY TYPE
Dual Function 16-Character Dot-Matrix LCD w/LED backlight
DISPLAY RESOLUTION
0.1 lb / 0.1 kg
ACCURACY
0.1% +/- 1 digit of displayed resolution for calibrated range
AUTO ZERO
Auto Zero when platform is first put down. One button operation after platform is left down.
AUTO POWER DOWN Adjustable between 30 to 300 seconds
AVERAGING
Automatic digital filter
POWER SUPPLY
AC Wall Power Supply, UL recognized with an internal six (6) “D” cell auxiliary battery backup. “REPLACE
BATTERY” warning displayed when batteries are low.
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.
TRANSPORTATION and
STORAGE
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). Store in the upright position and remove batteries if storing longer than three (3) months.
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
BUTTON FUNCTIONS
Page 7 of 16
WEIGH
Figure 2: Button Display
Press and hold to zero scale. Button is used to zero the system before placing the patient on the scale. Ensure that nothing is in contact with the weighing surface during this procedure.
SEND (PRINTER)
Press to send stored values to printer. Output values include time, date, and weight. If
BMI was calculated, BMI and height will be included in the output values. Also, low paper and low batteries are output values.
RECALL
Press to recall the last stored weight. The stored weight will be erased when the scale is zero or another stable weight is stored.
BMI
Press to calculate BMI. When the “BMI” is pressed, the default value “HT = 65 in” or
“HT = 165 cm” is displayed. If there is no stored stable weight, the display will indicate
“NO WEIGHT DATA” and then go back to the weigh screen “WT = 0.0 Lb”.
MENU
Press Menu to toggle through the menu options.
Setting the UNITS: Use UP or DOWN arrow buttons to select “Lb/ in” or “Kg/ cm”.
Press ENTER to save changes.
Setting ON TIME: Use UP or DOWN arrow buttons to adjust the “ON TIME”. The
“ON TIME” may be set from 30 to 300 seconds in 30 second increments. Press
ENTER to save changes.
Setting TIME and DATE: Use the UP arrow button to select digit. To change digit use the DOWN arrow button. Press ENTER to save changes.
NOTE: When selected, the year position defaults to “00”
Continued next page
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908 Page 8 of 16
BUTTON FUNCTIONS con’t
ENTER
Press to save change in digits for calibration, for unit’s set-up, for time and date set-up and saving completed calibration data.
UP / SELECT
Press UP to adjust height up from the default for BMI calculation, to increase the scale’s
“on time”, or to select a digit when setting time and date.
DOWN / CHANGE
Press DOWN to adjust the height down from the default for BMI calculation, to decrease the scale’s “on time”, or to change the value of a selected digit when setting time and date.
BASIC SYSTEM OPERATION
SETTING SYSTEM ZERO
Scale will auto-zero when the platform is first lowered. Make sure the scale is free and clear of any obstructions. When platform is left down, press and hold the ZERO / WEIGH button. The displayed message will indicate “HOLD TO ZERO” and count down to zero.
Release the button when display message indicates “HANDS OFF”. Make sure that nothing is in contact with the scale while zeroing the system. In a few seconds, the display will read “WT = 0.0 Lb” (or Kg).
WEIGHING
Position the patient on the scale. The weight stable indicator
“
” flashes on the display.
When the weight is stable, the weight stable indicator remains solid. The display will indicate the patient’s weight in either pounds or kilograms; example: “WT = 123.5 Lb”.
The stable weight is auto stored in memory.
RECALLING LAST STORED WEIGHT
Press to recall last stored weight. The stored weight will be erased when the scale is zero or another stable weight is stored.
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
BATTERY REPLACEMENT
Page 9 of 16
Figure 3: “Replace Battery” Display
STEP 1: The display will read “REPLACE BATTERY” (Figure 3)
STEP 2: Unscrew the two (2) battery cover screws and remove the battery compartment cover.
STEP 3: Remove and replace ALL six (6) “D” cell batteries.
STEP 4: Press the “WEIGH” button to confirm that “REPLACE BATTERY” is not displayed.
STEP 5: Replace cover and tighten the two (2) cover screws.
STEP 6: Zero the system.
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908 Page 10 of 16
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 on-chip analog to digital converter. The digital signal is filtered, converted to appropriate units, and displayed on the 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 normalize the sensitivity (voltage out per unit of weight applied) of each 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 sigmadelta converter sums a rapid sequence of 0's (0 volts) and 1's (reference voltage) to achieve balance with the input signal from the amplifier.
The micro-controller filters the digital output of the analog to digital converter, subtracts the value saved during the system zero operation and scales the filtered output, and then displays the result on the liquid crystal display. The micro-controller performs a moving-median filter of data for continuous weigh the micro-controller performs checks for signal stability before locking in on the reading.
The micro-controller can be placed in a calibration mode, where the system can be re-calibrated.
In the calibration mode, the system slope is calculated from two points (zero and full scale) in the
2-point calibration mode or the slope and change in slope is calculated from three points (zero, half, and full scale) in the 3-point calibration mode.
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908 Page 11 of 16
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.
L O W A P P L IE D H IG H
L IM IT L O A D L IM IT
CHECKING CALIBRATION
9 9 .9
1 0 0 .0
1 0 0 .1
1 9 9 .8
2 0 0 .0
2 0 0 .2
STEP 1: Select known calibrated weights, traceable to NIST.
2 9 9 .7
3 0 0 .0
3 0 0 .3
NOTE: DO NOT USE barbells or uncalibrated weights.
3 9 9 .6
4 0 0 .0
4 0 0 .4
STEP 2: Zero the scale by pressing and holding the left ZERO button.
4 9 9 .5
5 0 0 .0
5 0 0 .5
5 9 9 .4
6 0 0 .0
6 0 0 .6
STEP 3: Place the calibrated weight on the scale. Wait for scale to stabilize; note scale reading.
STEP 4: Scale readings should be within Calibration Tolerance Table
(Figure 4)
6 9 9 .3
7 9 9 .2
8 9 9 .1
9 9 9 .0
7 0 0 .0
8 0 0 .0
7 0 0 .7
8 0 0 .8
9 0 0 .0
9 0 0 .9
1 0 0 0 .0
1 0 0 1 .0
Figure 4: Calibration
Tolerance Table
IMPORTANT
CALIBRATION Qualified service personnel only should perform this procedure. The
SR7000i 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.
CALIBRATION SWITCH
Figure 5: Calibration Switch Diagram
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.
Continued next page
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
CALIBRATION cont’d
Page 12 of 16
SETTING 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.
STEP 1: Remove the two (2) screws on the display assembly cover. Remove the display assembly from the scale. Put the scale system into the Calibration Mode by switching the calibration switch on the display board (Figure 5).
STEP 2: Select known calibrated weights, traceable to NIST, up to the Full Scale value
(maximum capacity).
STEP 3: Press the “MENU” button until “1000Lb FULL” is displayed. Set the FULL value to the actual quantity of calibrated weight being used for Full Scale. Use the “UP” arrow button to select the digit and the “DOWN” arrow button to change digit. Press “ENTER” to save changes. Press
“WEIGH” button to abort any changes.
STEP 4: Press the MENU button until “500.0Lb HALF” is displayed.
NOTE: The Half-Scale value is a value between zero and the Full Scale values. It is usually close to half the Full Scale value.
Set the HALF value to the actual quantity of calibrated weight being used for Half Scale. Use the
“UP” arrow button to select the digit and the “DOWN” arrow button to change the digit. Press
“ENTER” to save changes. Press “WEIGH” to abort the changes.
STEP 5: Press MENU button until “3 PT CAL” is displayed. Press the “UP” arrow button.
STEP 6: Zero the scale by removing all weight from the platform. Press the “UP” arrow button to “ADD HALF”.
STEP 7: Place the calibrated weight on platform for HALF Scale. Allow weight to stabilize.
Press “UP” arrow button to save change.
STEP 8: Place the calibrated weight on platform for FULL Scale. Allow weight to stabilize.
Press “UP” arrow to save change.
STEP 9: Press “ENTER” button to save the calibration, or “WEIGH” button to exit without saving.
STEP 10: Switch the scale system out of the Calibration Mode on the display board (Figure 5).
NOTE: Ensure that no wires have become unplugged during calibration
STEP 11: Place the display assembly into the scale frame. Attach using the two (2) display cover screws.
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
TROUBLESHOOTING
Page 13 of 16
SYMPTOM
The characters only appear on half of the display.
REASON/CORRECTIVE ACTION
Press the “WEIGH” button or disconnect power and remove one battery. Wait five seconds, then reconnect the power and try the “WEIGH” button again.
The display lights appear to work, but do not respond to button activation.
Check to ensure the membrane switch label is correctly plugged into display board.
Check to ensure the calibration switch is not in the
Calibration Mode (Figure 5).
The display shows no reading at all.
Check that wall power supply is plugged in. Check to ensure batteries are installed correctly (see directions for BATTERY REPLACEMENT). Check display cable to make sure it is connected securely.
For additional information or assistance, telephone our Service Hotline: 1-800-654-6360 or e-mail: [email protected]
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
WARRANTY
Page 14 of 16
FOUR YEAR LIMITED WARRANTY
S systems are 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 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: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
NOTES:
Page 15 of 16
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
Model SR7000i Wall Mount Platform Scale
Operating and Service Manual
Part No. MAN7000i _150908
S
by
S
Instruments, Inc.
Page 16 of 16
Precision & Technology in
Perfect Balance
®
SInstruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com
email: [email protected]
Copyright 2015 SInstruments, Inc.
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Key Features
- Accurate and repeatable weight data
- Low power microprocessor circuitry
- Six (6) alkaline “D” cell auxiliary batteries provide scale system backup power.
- 16-character dot matrix LCD w/LED backlight
- Weighing surface of 24” x 40” (61 cm x 101.6 cm)
- Programmable Automatic Power Down (APD)
Frequently Answers and Questions
What is the maximum weight capacity of the SR7000i?
How do I zero the scale?
How do I replace the batteries?
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