OCF 6.1 Open Channel Flow & Tank Level Meter

An open channel flow meter that doubles as a tank level meter

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OCF 6 1 Open Channel Flow Tank Level Meter 07002

The Greyline OCF 6.1 is an open channel flow meter that doubles as a tank level meter, making it a perfect solution for non-contacting flow and level measurement. The non-contacting open channel flow meter is able to continuously monitor, display, totalize, and data log flow through any flume or weir. The ultrasonic sensor supplied with the OCF 6.1 mounts just 203.2 mm (8 in) above the flowing water giving +/- 0.25% accuracy.

The non-contacting open channel flow meter includes a built-in 26 million point data logger and flow reporting system. Use the isolated 4-20mA to transmit flow to remote chart recorders or displays, and the control relays are programmable for level / flow alarm and flow proportionate pulse (for samplers, chlorinators, or remote totalizers).

Use the OCF 6.1 in open channel flow mode for non-invasive flow, irrigation flow monitoring, industrial flow monitoring, and influent and effluent flow.

For tank level measurement, simply mount the ultrasonic sensor at the top of the tank and the separate, watertight electronics / display enclosure is mounted at a convenient nearby location within 152.4 m (500 ft) of the sensor. An intrinsic safety barrier is optional for sensor and cable installations in hazardous rated locations. Get accurate and reliable tank level measurement, stock control, and silo measurement without having to interrupt or shut down the process.

• Non-Contacting Ultrasonic Sensor
• Large, Backlit LCD Display
• 12-Digit Totalizer
• Isolated 4-20mA (1000 ohm)
• 2 Programmable Control Relays
• Automatic Sensitivity Adjustment
• Built-in 5-Key Calibrator
• Optional 26 million point data logger with USB output to Flash memory

General Specifications
Spec Name:	Description:
Electronics Enclosure	NEMA4X (IP 66) polycarbonate with clear, shatterproof cover
Accuracy	±0.25% of Range or 2 mm (0.8 in) whichever is greater. Repeatability & Linearity: ±0.1%
Display	White, backlit matrix - displays flow rate, totalizer, relay status, operating mode, and calibration menu
Programming	Built-in 5-key calibrator with English, French, or Spanish language selection
Power Input	100-240 V AC 50/60 Hz, see Options. 10 VA max depending on options
Output	Isolated 4-20mA / 0-5 V, 1000 ohms load maximum
Control Relays	2 Relays, form 'C' dry contacts rated 5 amp SPDT; programmable level alarm, pump control, pump alternation, failsafe/echo-loss, air temperature alarm
Electrical Surge Protection	Sensor, 4-20mA and, AC power input
Data Logger	Built-in 26 million point data logger with a USB output and Windows software
Operating Temperature (Electronics)	-20 °C to 60 °C (-5 °F to 140 °F)
Approximate Shipping Weight	4.5 kg (10 lbs)

Sensor Specifications
Spec Name:	Description:
Maximum Range	4.57 m (15 ft) with standard PZ15 sensor 10 m (32 ft) with standard PZ32T sensor
Deadband (Blanking)	Programmable, Minimum 203.2 mm (8 in)
Beam Angle	8°
Operating Frequency	PZ15: 92 kHz PZ32T: 42 kHz
Exposed Materials	PZ15: PVC PZ32T: PVC and Teflon
Operating Temperature	-40 °C to 65 °C (-40 °F to 150 °F) with automatic temperature compensation
Submersion Rating	Protected for accidental submersion to 3 m (10 ft) maximum
Sensor Cables	RG62AU coaxial, 7.6 m (25 ft) standard length, see Options