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73
GF 9950-10 Six Channel Transmitter
Single-point calibration
sets STANDARD only; GF
recommends a two-point
calibration to set SLOPE in
addition to STANDARD.
Quick Manual
Calibration Procedures:
1-Point Calibration
:
1. Set solution standard.
2-Point Calibration
(recommended):
1. Set solution standard.
2. Set solution slope.
Calibration Procedures - pH
Manual Calibration Procedure - pH
Requires prepared buffers. System calibration is possible with any known pH
solutions within 0 to 14 pH range.
•
Select pH values that are proximate to the application range and at least 2 pH
units apart.
•
Navigate to the CAL Menu
•
Set HOLD OUTPUTS if necessary
•
Select CAL AT INSTRUMENT
+
x4
Display returns to
VIEW Mode
CH1 pH
TEMPERATURE ->
SET
CH1 pH
EASYCAL ->
CH1 pH
AT INSTRUMENT
CAL
CH1 pH
HOLD OUTPUTS
OFF
CH 2 pH ->
CH1 pH ->
1.
To Set Standard:
To Change Reading:
Place electrode
tip in pH buffer.
CH1 pH
pH STANDARD ->
SET
CH1 pH
pH STANDARD ->
SET
RAW 13.25 mV
7.13
+07.1
3
AM/PM
30s
Allow for stabilization
30 seconds to
several minutes
ENTER CODE
_ _ _ _
CH1 pH
RAW 13.25 mV
7.13
CH1 pH
pH STANDARD ->
CH 1 pH ->
SAVING
ENTER
to accept
2.
CH1 pH
pH SLOPE ->
SET
CH1 pH
pH SLOPE ->
SET
To Set Slope:
To Change Reading:
13.25
pH
+07.1
3
AM/PM
30s
Allow for stabilization
30 seconds to
several minutes
Place electrode tip in
pH buffer two pH units
different than standard.
CH1 pH
pH SLOPE ->
CH 1 pH ->
SAVING
CH1 pH
RAW 13.25 mV
7.13
ENTER
to accept
3.
To Set Calibration Date:
CH1 pH
04-20-2017 XX
100
LAST CAL
.00
CH1 pH
05-15-2017 XX
100
LAST CAL
.00
To Change Reading:
CH1 pH
05-15-2017 XX
CH 1 pH ->
SAVING
CH1 pH
RESET TEMPCAL ->
100.0
CH1 pH
RESET pH CAL ->
SET
04-20-2017 XX
LAST CAL
0
4-20-2017 XX
ENTER
to accept
4.
-0.99
15.00
-0.99
15.00
CH1
7.0
77.0
4.0
99.0
CH2
pH
°F
pH
°F
Theoretical mV values
pH @ 25 °C
mV
2
+296
3
+237
4
+177
5
+118
6
+59
7
+0
8
-59
9
-118
10
-177
11
-237
12
-296