23
7+Series Version 2.0
Appendix I: Parameter setting & Factory default setting
Modes
Prompts
Parameter setting items
Abbreviation
Description
Restore to factory
default
P1.0
pH
P1.1
Select pH buffer solution
USA
－
NIST
－
CUS
USA
P1.4
Select resolution
0.01
－
0.1
0.01
P1.5
Restore to factory default
setting
No
－
Yes
No
P1.6
Set reading stability criteria
Normal
—
High
—
Low
Normal
P1.7
Temperature
calibration
Calibration range
±
5
℃
Factory default value
P2.0
Cond.
P2.1
Select electrode constant
1.0
－
10.0
－
0.1
1.0
P2.2
Select conductivity standard
solution
USA
－
CUS
USA
P2.5
Select reference temperature
15~30
℃
25
℃
P2.6
Adjust temperature
compensation coefficient
0.00~9.99
1.91
P2.8
Restore to factory default
setting
No
－
Yes
No
P2.9
Temperature
calibration
Calibration range
±
5
℃
Factory default value
P3.0
TDS
P3.1
Adjust TDS factor
fact
0.40~1.00
0.71
P6.0
Basic
Parameters
P6.1
Select temperature unit
/
℃
－
℉
℃
P6.6
Parameters selection
parm
No/Yes for each parameters
Yes
P6.8
Automatic Power-off setup
On
－
Off
On
Appendix III: Self-diagnosis information
Icons
Self-diagnosis information
pH
Conductivity
Wrong pH buffer solution or the meter recognition of
calibration solution out of range
√
√
Press
key when measuring value is not stable during
calibration
√
√
During calibration, the measuring value is not stable for ≥3min.
√
√
Electrode zero electric potential out of range
（
<-60mV or >60mV
）
√
Electrode slope out of range
（
<85% or >110%
）
√
pH measuring range out of range
（
<-2.00 pH or >16.00pH
）
√
