This compact, waterproof, highly accurate
D.O. meter made by ORION of Germany is an essential tool for your O2 cooler demonstrations.

The Dissolved Oxygen Meter (830A)

Manufacturer	:	ORION Research, Inc.
Concentration Ranges	:	0.0 to 60.0 mg/l at 20°C 0.0 to 90.0 mg/l at 0°C
Accuracy	:	±0.5% of measured value
Measurement Cycle	:	Approx. 2 Sec
Input 1 (Sensor)	:	Multi-contact for Polarographic sensors with integrated temperature probe
Meter Self-test	:	Segment test during power on
Operation Temperature	:	-10°C to +55°C
Power Supply	:	3 alkaline AA batteries
Dimensions	:	133 x 160 x 30 mm (W x H x D)
Weight	:	Approx. 560 g with batteries