• The portable device is designed to measure flow in open egg-shaped, trapezoidal, circular, or rectangular shaped channels.
• The device features a rechargeable internal battery and displays real-time velocity, level, instantaneous flow, and total flow information on its LCD.
• The device includes an internal datalogging system capable of storing two million data samples. The stored data can be analyzed and various reports can be obtained using the free software provided with the device via the USB port.
• The dual-beam ultrasonic sensor of the device continuously measures fluid velocity and level. Based on the defined measuring cross-section provided to the device, the instantaneous flow and total flow are displayed on the device’s LCD screen.

Channel Types: Round pipe, rectangular, trapezoid, egg, or custom shapes
Electronics Enclosure: IP67 polycarbonate
Operating Temp.(Electronics): -20 °C to +60 °C (-5 °F to +140 °F)
Accuracy: Level: ±0.25% of Range or 1 mm (0.04 in). Velocity: ±2% of reading
Repeatability and Linearity: ±0.1%
Display: White, backlit matrix — displays flow rate, totalizer, relay states, operating mode, and calibration menu
Programming: Built-in 5-key calibrator with English, French, or Spanish language selection
Battery: Internal rechargeable NiMH, 12 V DC, 10,000 mAh
Battery Charger: 6 A (100 W Max), 100-240 V AC 50/60 Hz input, UL and CE listed
Output/Communications: 4-20mA, 500 Ω or 0-5 V DC (100mA) by menu selection 2 solid-state Relays, 40 V AC/DC max., rated 250mA;
programmable for flow and/or level alarm or flow proportional pulse (sampler/totalizer, Max frequency 0.4 Hz)
Breakout Box: Connections for charger input, external battery input, 2 relays, 4-20mA (0-5 V)
Electrical Surge Protection: Sensor: 4-20mA outputs and AC power input
Data Logger: Programmable 2-million point data capacity, time and date stamped plus formatted flow reports including total,
average, minimum, maximum, and times of occurrence. Includes USB output to Flash Drives.
Logger Intervals: Programmable: 10 sec, 30 sec, 1 min, 2 min, 5 min, 10 min, 15 min, 30 min, 60 min
Software: Greyline Logger for Windows. Graph and data table presentation, level / velocity to flow conversion, exports
data to Excel, exports graphs.
Approximate Shipping
Weight: 6.8 kg (15 lb)
QZ02L TRANSDUCER SPECIFICATIONS
Velocity Measurement Range: 0.031 m/s to 6.2 m/s (0.1 ft/s to 20 ft/s) and reverse flow to -1.5 m/s (-5 ft/s)
Level Measurement Range: Minimum Head: 25.4 mm (1 in) Maximum Head: 4.6 m (15 ft)
Operating Temperature: -15 °C to +80 °C (+5 °F to +175 °F)
Exposed Materials: 316 stainless steel, epoxy resin, polyurethane
Sensor Cable: 7.6 m (25 ft) submersible polyurethane jacket, shielded, 3-coaxial
Transducer Mounting: Includes MB-QZ stainless steel mounting bracket
Temperature Compensation: Automatic, continuous
POPULAR OPTIONS
Transducer Cables Extension: Shielded 15.2 m (50 ft) submersible, polyurethane jacket with watertight connectors
Sensor Mounting Bands: Stainless steel sensor mounting bands for pipes from 152.4 mm to 1.8 m (6 in to 6 ft)

Monitoring of wastewater, industrial, irrigation, and natural fluids flow rates.