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

Copyright© 2020 by Tops Instruments Supplies Co. graphics, data sheet, photos and videos all rights reserved.