Máy đo pH/ORP/Temp Adwa AD131 Máy cầm tay (bảo vệ IP67) đo pH/ORP/Temp Dải đo: -2.00 to 16.00 pH, -2000 to +2000 mV, -20.0 to 120.0°C - Range pH ORP Temp -2.00 to 16.00 -2000 to +2000 mV 20.0 to 120.0°C (-4.0 to 248.0°F) - Resolution pH ORP Temp 0.01 0.1 up to ±999.9 mV / 1 outside 0.1°C (0.1°F) - Accuracy pH ORP Temp ± 0.01 pH ±0.2 up to ±699.9 ±0.5 up to ±999.9 mV / ±2 outside ±0.4°C (±0.8°F) - Calibration pH up t o 5-points - Buffers pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45 - Temperature compensation ATC/MTC (-20 to 120°C) - Calibration factory - UNIT °C and °F - Memory 500 samples on demand, with time GLP yes, with time - Hold function yes (Auto End Point - Low battery indication Yes - Stability indicator Yes - Auto shutt-off 20 min. (can be disabled) - PC interface RS232 for PC software and External Printer (AD132 only) - Power supply 4 x 1.5V AA batteries - Battery life 300 hours approx