Portable pH/mV/Temp Meter PH-221
PH-221 is a professional portable pH meter with relative mV measurement mode, 1 to 5 points calibration, setup menu contains 9 options, accuracy: 0.002pH.
pH Mode:
• Professional portable pH meter is equipped with a backlit LCD display.
• 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers.
• Automatic electrode diagnosis shows the pH slope and offset.
• Automatic temperature compensation ensures accurate readings over the entire range.
• Calibration due alarm prompts user to calibrate the meter regularly.
ORP Mode (Sensor is optional):
• 1 point offset calibration allows adjusting the displayed value to a known standard.
• Relative and absolute millivolt modes provide reliable ORP measurements.
General Features:
• Auto-Read function senses and locks the measurement endpoint.
• Auto-Power Off effectively conserves battery life.
• Setup menu allows setting the pH buffer group, number of calibration points, resolution, stability criteria, date and time, etc.
• Reset function automatically resumes all settings back to the factory defaults.
• Expanded memory stores or recalls up to 500 data sets.
• USB communication interface is easy to transfer data to PC.
• Multi-mode power scheme (batteries, power adapter and USB port) ensures that using the meter smoothly.
Specifications:
1. pH
1) Range: -2.000~20.000pH
2) Accuracy: ±0.002pH
3) Resolution: 0.001, 0.01, 0.1pH, selectable
4) Calibration Points: 1 to 5 points
5) pH Buffer Options: USA, NIST, DIN or custom
2. mV
1) Range: ±1999.9mV
2) Accuracy: ±0.2mV
3) Resolution: 0.1, 1mV, selectable
4) Calibration Points: 1 point
5) Measurement Modes: Relative or absolute mV
3. Temperature
1) Range: 0~105°C, 32~221°F
2) Accuracy: ±0.5°C, ±0.9°F
3) Resolution: 0.1°C, 0.1°F
4) Offset Calibration: 1 point
5) Calibration Range: Measured value ±10°C
4. General
1) Temperature Compensation: 0~100°C, 32~212°F, manual or automatic
2) Stability Criteria: Low or high
3) Calibration Due Alarm: 1 to 31 days or off
4) Memory: Stores up to 500 data sets
5) Output: USB communication interface
6) Connector: BNC
7) Display: 3.5" custom LCD
8) Power: 3×1.5V AA batteries or DC5V power adapter
9) Battery Life: Approximately 150 hours (Turn off the backlit)
10) Auto-Power Off: 10, 20 or 30 minutes after last key pressed
11) Dimensions: 170(L)×85(W)×30(H)mm
12) Weight: 300g
