Model SR735
i
Wheelchair Scale
Operating and Service Manual
Part No. MAN735
i
_MICROBAN_200603
Page 14 of 20
S
Instruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL:
email:
S
Instruments, Inc.
LOW
LIMIT
APPLIED
LOAD
HIGH
LIMIT
99.9
100.0
100.1
199.8
200.0
200.2
299.7
300.0
300.3
399.6
400.0
400.4
499.5
500.0
500.5
599.4
600.0
600.6
999.0
1000.0 1001.0
CALIBRATION
TOLERANCE TABLE
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 known calibrated weights, traceable to NIST.
DO NOT USE
barbells or uncalibrated weights.
STEP 2:
Zero the scale by pressing and holding the
ZERO / WEIGH
button.
STEP 3:
Place the calibrated weight on the scale. Wait for scale to
stabilize; note scale reading.
STEP 4:
Scale readings for both weights should be within Calibration
Tolerance Table
(Figure 8)
Figure 8: Calibration
Tolerance Table
Figure 9: Calibration Switch Diagram
IMPORTANT
CALIBRATION Qualified service personnel only should perform this procedure. The
SR735
i
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
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.
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