Model SR755KG Series Wheelchair Scale
Operating and Service Manual - S/N 1913+
Part No.: MAN755KG_100929
Page 11 of 16
S
Instruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL:
www.srscales.com
email:
Copyright 2010
S
Instruments, Inc.
LOW
LIMIT
APPLIED
LOAD
HIGH
LIM IT
99.9
100.0
100.
199.8
200.0
200.
299.7
300.0
300.3
399.6
400.0
400.
1
2
4
499.5
500.0
500.5
999.0
1000.0
1001.0
599.4
600.0
600.6
699.3
700.0
700.7
799.2
800.0
800.8
899.1
900.0
900.9
CALIBRATION
TOLERANCE TABLE
CALIBRATION
TEP 5
: Place a known calibrated weight, traceable to NIST, onto the
weight. The displayed value should be within 0.1% of the
calibrated weight, plus or minus 1 digit of reading.
STEP 7
: When settings are completed:
Press the “
HOLD
” button to SAVE the
settings or press the “
WEIGH
” button to
CANCEL. Both choices will EXIT the CAL
mode.
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
: (Figure 1) Remove the two (2) screws on the bottom of the display housing. Lift the
display panel. The calibration buttons are located on the PC Board.
STEP 2
: (Figure 6) Press and hold both butto
Figure 6: Calibration Button Diagram
ns simultaneously
(SW5 and SW6).
STEP 3
: The display will read “
HOLD TO CAL
” as the right hand digit
counts down to enter the CAL mode.
STEP 4
: When in the CAL mode, press the “
ZERO
” button to zero the
display.
S
weighing surface and compare it to the displayed reading.
Note
: DO
NOT USE barbell weights or calibrate to a mechanical scale.
STEP 6
: Use the “
-
” or “
+
” button to make corrections to the
displayed
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.
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.
“-” “+”
CALIBRATION BUTTONS
