| Specification |
F660 |
F690 |
| Warranty |
3 Years |
| pH and Temperature Mode |
Yes |
Yes |
| mV and Relative mV Mode |
Yes |
Yes |
| Concentration (ISE) Mode |
No |
Yes |
| RS-232 Interface |
Yes |
Yes |
| GLP/GMP Compliance |
Yes |
Yes |
| pH |
Range |
-2 to 19.99 pH |
| Resolution |
0.1, 0.01, 0.001 pH |
| Relative Accuracy |
± 0.002 pH |
| mV |
Range |
± 2000 mV |
| Resolution |
0.1 mV |
| Relative Accuracy |
± 0.2 mV |
| Temp |
Range |
-5 to 105 °C (23 to 221
°F) |
| Resolution |
0.1 °C or °F |
| Relative Accuracy |
± 0.3 °C or 1% |
| Conc |
Range |
N/A |
0-19900 |
| Resolution |
lsd* |
| Relative Accuracy |
0.5% |
Automatic Temperature Compensation
(ATC) |
Over entire range |
Locking onto Stable Readings with
Auto-Read™ |
Yes |
Stored Buffers recognized
with
Auto-Find™ and ATC Function |
5
1.68, 4.00, 7.00, 10.01 and 12.45 pH |
Replacement Buffers recognized with
Auto-Find and ATC Function |
4
6.86, 7.41, 9.18 and 11.88 pH |
| Custom Buffers |
5 |
| Calibration Points (pH) |
5 |
| Calibration Points (Conc) |
N/A |
5 |
| Simultaneous Display of Results and
Temperature |
Yes |
| Setup Mode |
Yes |
| °C/°F Selection |
Yes |
| Continuous Display of Standards |
Yes |
| Audible Support |
Yes |
| Review of mV, Eo and Slope |
Yes |
| Re-calibration Alert |
Yes |
| Numeric Keys for Input |
Yes |
| RS-232 Interface |
Yes |
| Date and Time Stamp |
Yes |
| Display |
Matrix LCD |
| Error Messages |
Yes |
| Battery-Operated |
No |
| AC Line Operation |
Yes (Standard) |
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