YSI Incorporated
Model 5000/5100 Service Manual
19
SECTION 8 TEST PROCEDURE
This produce is for use with the YSI 16423 Oxygen Test Box. If no test box is available, testing
can be performed by inputting the resistance values in column 2 of the charts below.
•
A display test and system check are automatically run upon instrument start up.
•
Allow the display to stabilize completely during the following calibration checks.
•
Last digit rounding feature should be left off.
•
If auto stable feature has been activated, an asterisk should appear one the LCD once the
reading is stable.
Note:
Neither the Model 5100 nor the 5000 have internal calibration adjustments. If either fail
any of the following accuracy checks, they must be repaired before using.
1.
Temperature Range Check
A.
Plug the test box connector into a
5011 Adapter
and then into either the
5000 or 5100, (IBT) Instrument Being Tested, set test box to A-1, set the IBT
to
MAIN
Mode.
B.
Set the test box to the following positions and note temp. display:
Set Test Box to:
Resistor input, J5 Pins 4 & 5
Display Reading
A-1
9534
Ω
±0.25%
-5.0 ±0.2°C
A-2
4482
Ω
±0.25%
+10.0 ±0.2°C
A-3
2252
Ω
±0.25%
+25.0 ±0.2°C
A-4
984
Ω
±0.25%
+45.0 ±0.2°C
A-5
Infinity
E.1 CHECK PROBE
2.
Oxygen Range Check - % Range
A.
Set test box to D-2 position, let the readings stabilize, and set the IBT to the
CALIBRATE, DO CAL
mode. The display should have the last digit of the
% number flashing.
B.
Press the
UP, DOWN and DIGIT
soft keys as necessary for the display to
read zero - 0.0%, then press the
ENTER
key to store the settings.
C.
The message line on the display should briefly say DO CALIBRATION
SAVED and the DO indicated as 0.0% and 0.00 Mg/L with temperature still
10.0
o
C (See above chart).
D.
Set test box to A-2 and allow display to stabilize. Press the
DO CAL
soft key
to enter DO CAL mode again. Press the
UP, DOWN
and
DIGIT
soft keys as
necessary for the display to read 100.0%. Press the
ENTER
key again to
store
settings.
E.
Perform the following checks for 0
2
%.
