Model SR775L
Service Manual - S/N 1035+
Part No. MAN775L_100929
Page 12 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.
CALIBRATION
IMPORTANT
CALIBRATION CHECK – A certified technician should perform this procedure.
The load cell and integrated electronics have no user serviceable components and
should not be tampered with for any reason. Re-calibration must be performed
when the seal is broken. Recommendation for calibration check is at least once
every 12 months, or as individual maintenance policy requires.
INITIAL SYSTEM SETUP
When initially set up, calibration is factory set and re-calibration is not needed. The Local
Gravitational Acceleration may have to be re-set for the current geographical location. Automatic
Shut Off is shipped with a factory default of 60 seconds. If a longer period of time (120 or 180
seconds) is desired, then it will need to be re-set. Both of these procedures are found below.
ACCESS SYSTEM SETUP
Ensure scale is level before proceeding.
To access all settings below, break the Calibration Seal and
open the right hand end cap. Seal must be replaced by a certified technician. Push the calibration
switch right to the “
CAL
” position (Figure 4) using the eraser end of a pencil or similar item. Display
arrow on the top right will light up.
CAUTION
ESD: The integrated circuits and
semiconductors on the printed circuit boards
may be damaged by electrostatic discharge).
Be sure to use proper handling precautions at
all times.
SETTING GRAVITATIONAL ACCELERATION
STEP 1
: Select
number
“
1
” on the numeric keypad. The 2
ND
display arrow down on the right will light up.
STEP 2
: The factory default setting will appear on the display.
Using the keypad, enter in the local gravitational acceleration value if
desired.
STEP 3
: Press the “
ENTER
” button to save the selection or
the “
CLEAR
” button to exit the menu without saving. The
display arrow will return to the 2
ND
display arrow down on the
right.
STEP 4
: (Figure 5) Select another menu item, or push the
calibration switch left to the “
RUN
” position to exit
CALIBRATION mode.
Figure 5: Calibration Switch
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