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USB communication interface enables easy data transfer to a PC.

PH-320 Portable PH/LON Meter

Model NO. PH-320

Minimum Order 1unit

Professional portable pH/ion meter with pH, oxidation-reduction potential and ion concentration measurement modes, setup menu contains 12 options, accuracy 0.002 pH.

Quantity

Features：

• 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers.
• Automatic electrode diagnosis shows the pH slope and zero offset.

• 1 point offset calibration allows adjusting the displayed value to a known standard.
• Relative and absolute millivolt modes ensure the reliable ORP measurements.

Ion Concentration
• 2 to 5 points calibration, including the selection of 8 concentration points.
• Automatic electrode diagnosis shows the calibration points and slopes.
• Direct ion concentration readout simplifies the measurement process.
• Selectable concentration units (ppm, mg/L, mol/L, mmol/L) and ionic valency.
Other Features
• Automatic temperature compensation ensures accurate readings over the entire range.
• Auto-read function senses and locks the measurement endpoint.
• Calibration due alarm reminds user to calibrate the meter regularly.
• Auto-power off effectively conserves battery life.
• Setup menu allows setting the pH buffer set, number of calibration points, resolution, stability
criteria, temperature unit, date and time, etc.
• Reset function automatically restores all settings to the factory defaults.
• Expanded memory stores or recalls up to 500 data sets.
• USB communication interface enables easy data transfer to a PC.
• DAS software is capable of receiving data, recording measurements at specified intervals,
exporting data to Excel.
• Multi-mode power scheme (batteries, power adapter, USB port) ensures the smooth operation
of the meter.

Specification：

Model	PH-320
pH
Range	-2.000 to 20.000 pH
Resolution	0.001 / 0.01 / 0.1, selectable
Accuracy	±0.002 pH
Calibration	1 to 5 points
pH Buffer Options	USA / NIST / DIN / 2 custom buffers
ORP
Range	-1999.9 to 1999.9 mV
Resolution	0.1 / 1, selectable
Accuracy	±0.2 mV
Calibration	1 point
Measurement Modes	Relative / Absolute mV
Ion Concentration
Range	0.001 to 19999 (depends on electrode range)
Resolution	0.001, 0.01, 0.1, 1, automatic
Accuracy	±0.5% F.S. (monovalent), ±1% F.S. (divalent)
Calibration	2 to 5 points
Calibration Solutions	0.001 / 0.01 / 0.1 / 1 / 10 / 100 / 1000 / 10000
Measurement Units	ppm, mg/L, mol/L, mmol/L
Temperature
Range	0 to 105°C / 32 to 221°F
Resolution	0.1
Accuracy	±0.5°C / ±0.9°F
Calibration	1 point
Calibration Range	Reading ±10°C/°F
Other Specifications
Temperature Compensation	0 to 100°C / 32 to 212°F, manual or automatic
Hold Function	Manual / Auto-read measurement endpoint
Stability Criteria	Low / High
Calibration Due Alarm	1 to 31 days or off
Auto-Power Off	10 / 20 / 30 minutes after last key pressed
Memory	Stores up to 500 data sets
Output	USB communication interface
Connector	BNC, 3.5 mm jack socket
Display	Custom LCD (80 × 60 mm)
Power Supply	3 × 1.5V AA batteries or 5V DC power adapter
Battery Life	Approximately 150 hours without backlight
Environmental Conditions	0 to 50°C / 32 to 122°F, relative humidity < 80%
Dimensions	170 × 85 × 30 mm
Weight	300 g