Description
OTT MF pro – Water Flow Meter
Handheld electromagnetic water flow meter with automatic discharge calculation
The OTT MF Pro is a user-friendly, low maintenance electromagnetic current meter for cost-efficient in-stream discharge measurement.
The OTT MF pro saves time in the field by automatically calculating discharge and its electromagnetic sensor head is maintenance-free, ideal for use in low-flow environments, and unaffected by large amounts of organic matter.
- Spot
- Electro-magnetic
- Flow velocity and water depth
- Low maintenance magnetic – inductive probe with level measurement for reliable flow measurements. Works well in low flow and turbulent conditions, cross – sections with weed growth and pollution. Applicable in streams and conduits.
- 0 … 6 m/s
- ± 2% of measured value ± 0.015 m/s ( 0 … 3 m/s ) and ± 4% of measured value ± 0.015 m/s ( 3 … 5 m/s )
Feature
- Discharge automatically calculated: the OTT MF pro computes discharge automatically based on USGS and ISO methods, saving time and eliminating potential for error caused by written transcription
- Real-time velocity: velocity is graphed in real-time on the meter’s color display, allowing trends to be visualized quickly
- Maintenance-free: the electromagnetic sensor head has no moving parts and is virtually maintenance-free
- Versatile applications: the sensor’s magnetic inductive measurement principle makes the OTT MF pro ideal for use in low-flow conditions and environments heavy in organic matter, unlike mechanical or acoustic meters
- User-friendly handheld: a lightweight, water-resistant handheld features a full color display that is easily readable even in bright sunlight
Depth sensor: optionally included in the unit
Spesification
| Velocity measurement | |
| Measurement method | Magnetic-inductive |
| Measuring range: | 0 … 6 m/s |
| Accuracy | |
| Accuracy at 0 ? 3 m/s | ±2 % of meas. value ±0.015 m/s |
| Accuracy at 0 ? 5 m/s | ±4 % of meas. value ±0.015 m/s |
| Zero stability | ±0.015 m/s |
| Resolution | |
| 0.001 at measured value | <10 |
| 0.01 at measured value | <100 |
| 0.1 at measured value | >100 |
| Depth measurement (option) | |
| Absolute pressure sensor | with single point calibration |
| Measuring range: | 0 … 3.05 m |
| Accuracy: | The larger of ±2% of measured value or ±0.015 m |
| Methods for velocity measurement | |
| Streams: | 1, 2, 3, 5, and 6 point measurement (ISO / USGS standards) |
| Conduits (canalization): | 0.9 x Vmax; 0.2/0.4/0.8; 2D velocity integrating method |
| Conduit profiles: | Circular, rectangular, trapezoidal, 2/3 egg, inverted 2/3 egg |
| Methods for discharge calculation | |
| EN ISO 748 | Mid and Mean section method |
| Power supply | Lithium-ion battery |
| Lifetime | 18 hours typ. (20°C) |
| Data memory capacity | Up to 10 measuring locations (of 32 vertical profiles each) |
| Temperature | -20 … +60°C (operation/storage) |
| Handheld unit display | |
| Graphic colour display, transflective | LCD 3.5′, QVGA |
| Handheld unit interface: | USB Mini B type, 5-pin |
| Export format | TSV (Tab Separated Value) file format |
| Operating modes | Real-time velocity measurement, Discharge profile (stream/conduit) |
| Noise suppression | 50 Hz, 60 Hz (adjustable) |
| Cable lengths | 2 m, 6 m,12 m, and 30 m |
| Material | |
| Sensor housing: | ABS, glass-fiber reinforced |
| Handheld unit: | Polycarbonate, moulded,by shock-absorbing elastomer (TPE) |
| Dimensions and weight | |
| Sensor body: | |
| L x W x H: | 11.9 cm x 4.3 cm x 6.3 cm |
| Weight: | 0.5 kg ( with 6 m cable) |
| Handheld unit: | |
| L x W x H: | 21.8 cm x 9.3 cm x 5.3 cm |
| Weight: | 0.68 kg |
| IP class of protection | |
| Sensor: | IP68 |
| Handheld unit: | IP67 (USB cap attached) |
