Portable pH/ORP Meter

Portable pH/ORP Meter Measurement Parameters: 1. PH-220: pH, mV, temperature. 2. PH-221: pH, mV, relative mV, temperature. PH-220 Features: 1. 1 to 3 points calibration with automatic recognition for USA and NIST buffers. 2. Automatic electrode diagnosis helps user decide whether to replace the pH electrode. 3. Automatic temperature compensation ensures accurate readings over the entire range. 4. Auto-Read function senses and locks the measurement endpoint. 5. Setup menu allows setting the pH buffer set, number of calibration points, temperatureunit, auto-power off, etc. 6. Reset function automatically resumes all settings back to the factory defaults. 7. Expanded memory stores or recalls up to 100 data sets. 8. USB communication interface for data transfer or connecting a power adapter to meter. PH-221 Features: PH 1. 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers. 2. Automatic electrode diagnosis shows the pH slope and offset. 3. Automatic temperature compensation ensures accurate readings over the entire range. 4. Calibration due alarm prompts user to calibrate the meter regularly. ORP 1. 1 point offset calibration allows adjusting the displayed value to a known standard. 2. Relative and absolute millivolt modes ensure the reliable ORP measurements. General Features: 1. Auto-Read function senses and locks the measurement endpoint. 2. Auto-Power Off effectively conserves battery life. 3. Setup menu allows setting the pH buffer set, number of calibration points, resolution, stability criteria, temperature unit, date and time, etc. 4. Reset function automatically resumes all settings back to the factory defaults. 5. Expanded memory stores or recalls up to 500 data sets. 6. USB communication interface is easy to transfer data to PC. 7. Multi-mode power scheme(batteries, power adapter and USB port) ensures that using the meter smoothly. Accessories: 1. PH electrode 2. Temperature probe 3. PH buffer solutions(pH4.01/7.00/10.01) 4. Carrying case Technical Parameters: Model PH-220 PH-221 pH pH Range -2.00~20.00pH -2.000~20.000pH pH Accuracy ±0.01pH ±0.002pH Resolution 0.01pH 0.1, 0.01, 0.001pH, Selectable Calibration Points 1 to 3 points 1 to 5 points pH Buffer Options USA(4.01/7.00/10.01) NIST(4.01/6.86/9.18) USA(pH1.68/4.01/7.00/10.01/12.45) NIST(pH1.68/4.01/6.86/9.18/12.45) DIN(pH1.09/4.65/6.79/9.23/12.75) or 2 custom buffers ORP mV Range -1999~1999mV -1999.9~1999.9mV mV Accuracy ±1mV ±0.2mV Resolution 1mV 0.1, 1mV, Selectable Calibration Points / 1 point Temperature Temperature Range 0~105°C/32~221°F Temperature Accuracy ±0.5°C/±0.9°F Resolution 0.1°C/0.1°F Offset Calibration 1 point, reading ±10°C Other Specifications Temperature Compensation 0~100°C, manual or automatic Stability Criteria / Low or high Calibration Due Alarm / 1 to 31 days or off Slope/Offset Display Yes Hold Function Manual or auto-endpoint Auto-Off 30 minutes after last key pressed 10, 20 or 30 minutes after last key pressed Memory 100 data sets 500 data sets Communication Interface USB Connector BNC, 3.5 mm jack socket Display Custom LCD(80*60mm) Power Requirements 3*1.5V AA batteries or DC5V power adapter Battery Life Approximately 150 hours(Turn off the backlight) Dimensions(W*D*H) 170*85*30mm Package Size(W*D*H) 475*155*350mm Net Weight 300g Gross Weight 2kg