The pH meter 228 is a very easy-to-use pH / mV / °C / °F handheld instrument. The pH value and the temperature can be stored directly on the SD card (Excel file) or transferred directly from the pH meter to a PC via the RS-232 interface. For this we optionally offer a software and the suitable RS-232 interface cable as an accessory. Temperature compensation is either manual or automatic via the supplied temperature sensor.
All this allows a fast and reliable pH measurement. The pH meter has a three-point calibration, which is performed automatically. It can be determined with the combination meter, the pH, the temperature or the REDOX potential (ORP). For the latter measurement parameters, however, a REDOX electrode must also be ordered. Here we recommend the ORP electrode ORP-14. The pH meter is battery operated (6 x 1.5V batteries are included).
pH Meter 228LIQ
Measuring range pH
0.00 ... 14.00 pH
Resolution 0.01 pH Accuracy ± (0.02 pH + 2d) Measuring range redox -1999 ... 0 ... 1999 mV
(only possible with optional REDOX electrode)
Resolution 1 mV Accuracy ± (0.5% + 2d) Measuring range temperature 0 ... 65°C / 32 ... 149°F (only temp. Sensor) Resolution 0.1°C / 0.18°F Accuracy (@ 20°C) ± 0.5°C / 0.9°F Calibration Automatic three-point calibration Temperature Compensation Automatically from 0 ... 65°C / 32 ... 149°F or manually between 0 ... 100°C / 32 ... 212°F with the temperature sensor removed Electrode pH electrode for eg beer, blood and milk products / BNC plug Temperature range 0 ... 60°C / 32 ... 140°F Measuring rate Adjustable from 1 second to 8 hours 59 minutes 59 seconds Display LC display 52 x 38 mm / 2 x 1.5 in Data storage Flexible via SD card memory 1 ... 16 GB Interface RS-232 Software Optional Power supply 6 x 1.5V AA batteries / 9V power adapter (optional) Environmental conditions 0 ... 50°C / 32 ... 122°F max. 85% rh Dimensions 177 x 68 x 45 mm / 7 x 2.7 x 1.8 in Weight 490 g / 1.1 lbs