Description
The FDL400 "Flow Data Logger 400" measuring device is suitable for measuring the flow of water and wastewater in fully or partially filled sewers or pipes of various geometries.
Technical Data
Properties
- Housing
- Aluminium
- Protection class
- IP30
- Dimensions
- 197 x 153 x 37,5mm (B x H x T)
- Temperature range
- 0 – 50°C
- Supply voltage
- 24V DC +/-20%
- Power consumption
- 120mA – 220mA
- Reverse polarity protection
- ✓
- Display
- 4x20
Outputs
- analog 0(4)–20mA
- 3x
- digital
- 4x
- fixed for alarm
- 1x
- free configurable
- 3x
display of measured value
- Flow velocity
- Filling level
- flow
- flow rate
Further product information
The evaluation is based on the flow formula Q = V x A.
- Q = flow rate
- V = flow velocity
- A = wetted area
A combined measuring sensor mounted on the channel floor or wall records the flow velocity V in m/s according to the Doppler principle. The velocity data is recorded and processed in the processor via a sonic beam that radiates into the medium against the direction of flow. The integrated pressure sensor is used to record the fill level in metres; this value is in turn used in the processor to calculate the segment area in m² through which the flow passes according to a pre-programmed channel cross-section. The two multiplicands result in the sum Q in l/s
All required parameters are programmed using the 16-way keypad on the front of the device. The individual values appear in the clear 4-fold display
- Flow rate
- filling level
- Flow rate
- quantity
The measuring sensors are supplied with the necessary voltage by the evaluation electronics. In addition to its actual measuring function, the FDL400 measuring device also serves as a power supply unit for the approved sensors intended for this purpose. The device has 4 switching outputs.
Outputs
- 3 x analog 0 (4) - 20 mA / load 100Ω - 900Ω freely configurable for standard flow, extra flow, flow velocity and height.
- 4 x digital, optically decoupled p-transistor outputs (PNP) - 12 - 30 V / 50 mA, short-circuit proof.
- 1 x permanently programmed as an alarm.
- 3 x freely configurable as a pulse output, for standard flow, extra flow, flow velocity and height.
All outputs can be switched on and off individually.
Measurement data is stored on an SD card (Secure Digital Memory Card).
The device has a mini-USB interface (AB). This is also located on the top of the device under the flap that can be opened. This interface can be used to transfer measurement data and load updates to the operating software.
