Model: SR615 Infant Scale
Operating and Service Manual - S/N 3706+
Part No.: MAN615_110210
Page 11 of 14
S
Instruments, Inc.
,
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977 Fax: 716-693-5854 URL:
www.srscales.com
email:
Copyright 2011
S
Instruments, Inc.
CALIBRATION
CALIBRATION PROCEDURE
(Figure 5) Place Scale Base upside down on countertop. Remove the black hole plugs on the underside
of the scale from the two (2) calibration buttons (1) and one (1) potentiometer offset screw (2).
STEP 1
: Turn the Scale Base upright. Carefully slide the Scale Base off the edge of the table’s
surface until the Calibration Buttons are accessible underneath.
STEP 2
: Press and hold both “
CAL
” buttons (1) simultaneously for 10 seconds. The display
will read
“HOLD TO CAL
” as the right hand digit counts down to enter the CAL
mode.
STEP 3
: Attach cradle. Offset figure should read b2.00 lbs and +2.50 lbs. Adjust figure by
using the Offset Potentiometer Screw (2). (Fine blade screwdriver required.)
STEP 4
: When in CAL mode, press the “
ZERO
” button to zero the display.
Figure 5: Calibration Buttons (1) and Offset
Potentiometer Screw (2)
Continued next page
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. Recommendation for calibration check is at least once
every 12 months, or as individual maintenance policy requires.
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