Features:
*1 or 2 points calibration using the air-saturated water or zero oxygen solution.
*Salinity and barometric pressure compensations eliminate the measurement error.
*Automatic temperature compensation ensures accurate readings over the entire range.
*Auto-Read function senses and locks the measurement endpoint.
*Setup menu allows setting the number of calibration points, concentration unit, temperature unit, etc.
*Reset function automatically resumes all settings back to the factory defaults.
*Calibration due alarm prompts user to calibrate the meter regularly.(only PH-980)
*Set up menu allows setting the number of calibration points,resolution.stability criteria, temperature unit, concentration unit, date and time, etc,(only PH-980)
*Expanded memory stores or recalls up to 500 data sets.(only PH-980)SD
*USB communication interface for data transfer and timed interval readings.(only PH-980)
Accessories:
DO100 dissolved oxygen electrode, electrolyte solution, membrane cap and DC9V power adapter.
 
Technical Parameters:
| 
			 Model  | 
			
			 PH-810  | 
			
			 PH-980  | 
		|
| 
			 DO  | 
			
			 Range  | 
			
			 0.0~20.0mg/L or ppm  | 
		|
| 
			 Accuracy  | 
			
			 ±0.5mg/L  | 
			
			 ±0.2mg/L  | 
		|
| 
			 Resolution  | 
			
			 0.1mg/L  | 
			
			 0.01, 0.1mg/L, selectable  | 
		|
| 
			 % saturation  | 
			
			 Range  | 
			
			 0.0-200.0%  | 
		|
| 
			 Accuracy  | 
			
			 ±2.0%  | 
		||
| 
			 Resolution  | 
			
			 1%  | 
			
			 0.1,1%,selectable  | 
		|
| 
			 Temperature  | 
			
			 Range  | 
			
			 0-60°C/32-140°F  | 
		|
| 
			 Accuracy  | 
			
			 ±1°C/±1.8°F  | 
			
			 ±0.5°C/±0.9°F  | 
		|
| 
			 Resolution  | 
			
			 0.1°C/0.1°F  | 
		||
| 
			 Offset Calibration  | 
			
			 1 point, reading ±10°C  | 
		||
| 
			 Other Specifications  | 
			
			 Dissolved Oxygen Calibration  | 
			
			 1 or 2 points  | 
		|
| 
			 Temperature Compensation  | 
			
			 0~40°C, automatic  | 
			
			 0050°C, automatic  | 
		|
| 
			 Barometric Pressure Correction  | 
			
			 60.0~112.5kPa/4500850mmHg, manual  | 
		||
| 
			 Salinity Correction  | 
			
			 0.0~35.0g/L, manual  | 
			
			 0.0~50.0g/L, manual  | 
		|
| 
			 Stability Criteria  | 
			
			 /  | 
			
			 Low or high  | 
		|
| 
			 Calibration Due Alarm  | 
			
			 /  | 
			
			 1 to 31 days or off  | 
		|
| 
			 Hold Function  | 
			
			 Manual or auto-endpoint  | 
		||
| 
			 Memory  | 
			
			 /  | 
			
			 500 data sets  | 
		|
| 
			 Communication Interface  | 
			
			 /  | 
			
			 USB  | 
		|
| 
			 Connector  | 
			
			 6-pin nimi-DIN  | 
		||
| 
			 Display  | 
			
			 Custom LCD (120*60mm)  | 
			
			 Custom LCD (125*100mm)  | 
		|
| 
			 Power Requirements  | 
			
			 DC9V power adapter  | 
			
			 DC5V power adapter  | 
		|
| 
			 Dimensions(mm)  | 
			
			 210*205*75mm  | 
			
			 210*188*60mm  | 
		|
| 
			 Weight(kg)  | 
			
			 1.5kg  | 
		||
| 
			 Package Size(W*D*H)mm  | 
			
			 310*240*180mm  | 
		||
| 
			 Gross weight(kg)  | 
			
			 1.7kg  | 
		||