Water Quality Meter à¤Ã×èͧÇÑ´¤èÒ¾Õ-àͪ à¤ÃÕèͧÇÑ´¡Ã´´èÒ§ à¤Ã×èͧÇÑ´¤Ø³ÀÒ¾¹éÓ à¤Ã×èͧÇÑ´¡Ã´´èÒ§ PH meter > à¤Ã×èͧÇÑ´¡Ã´´èÒ§ ¾Õàͪ ÁÔàµÍÃì. à¤Ã×èͧÇÑ´¡Ã´-´èÒ§ PH210 PH210: Compact pH/ORP/Temperature Meter Measures pH, ORP and Temperature (with ATC) Features: Displays pH or mV (ORP) and Temperature simultaneously BNC input accepts standard pH or ORP electrodes (sold separately) Manual or Automatic Temperature Compensation (via optional Temperature Probe) Automatic 3-point calibration (4, 7, and 10pH) Data Hold and Min/Max Auto Power Off with disable feature Complete with 9V battery and soft case (pH, ORP and Temperature Probes sold separately) Specifications: Range pH -2.00 to 16.00 pH Range Temperature -9.9 to 120.0°C Resolution pH 0.01 pH Resolution Temperature 0.1°C Accuracy pH ±0.01 pH Accuracy Temperature ±0.4°C pH Calibration automatic, 1 or 2 point with 5 memorized buffer values (pH 4.01, 6.86, 7.01, 9.18, 10.01) Temperature Compensation Automatic (with HI 7669/2W probe) or manual from -9.9 to 120°C pH Electrode HI 1131B, glass-body, double junction, refillable, BNC connector, 1 m (3.3') cable (included) Temperature Probe HI 7669/2W with 1 m (3.3') cable (included) Input Impedance 1012 Ohm Power Supply 12 Vdc adapter (included) Environment 0 to 50°C (32 to 122°F); RH max 95% Dimensions 240 x 182 x 74 mm (9.4 x 7.2 x 2.9") Weight 1.1 kg (2.4 lb.) Extech pH Meter PH210 à¤ÃÕèͧÇÑ´¡Ã´´èÒ§ à¤Ã×èͧÇÑ´¤èÒ¾Õ-àͪ