D‑FL 220 system components

Measuring heads

Two identically designed measuring heads are used. Depending on the application data, different depth-of-penetration lengths are required, for example, from 100 to 1 100 mm.

A 4‑to‑20‑mA current signal is available as measured value output which measures the velocity and/or the volume flow and can be connected, for example, to a emission evaluation calculator. Two relay contacts are available for signaling. Also available is a Modbus interface according to VDI 4201‑3 for the connection of an emission evaluation calculator with digital interface. The various parameters are entered during the installation on site. The USB port is on the rear.

Purge flanges

The purge air is supplied to each of the two measuring heads via a purge flange for cooling and cleaning the ultrasonic transducers. A toggle-type fastener connects the purge flange to the measuring head.

Mounting tubes with flange

Mounting tubes made of stainless steel 1.4571 or of glass-fiber reinforced plastic, adapted to the plant conditions, are available.

Purge air unit

A hose connects the two measuring heads to the purge air unit. The filtered air is used to cool the measuring heads and to keep the transducers clean.

Terminal box

Terminal box to output the data with connecting cable for the two sensors and customer terminal strip.

Software D‑ESI 100

Parameterization software, visualization of the measured data and performance of maintenance functions.

The D‑ESI 100 can be parameterized, maintained and, when faults occur, analyzed via the USB port with the help of a PC and the associated software.

Optional

Universal control unit D‑ISC 100

The connected equipment is easy to configure and operate using the D‑ISC 100 control unit. The display provides an immediate overview of the current measured values and the status of the measuring instruments.

Measured value acquisition

In the simplest case the measured values and reference values are transferred to the plant's control system. The measured values and status signals that are output can also be fed into an emission calculator system for further processing. Either via discrete signals (4 to 20 mA and configurable relay contacts) or via Modbus according to VDI 4201‑3.

Weather protection covers

Weather protection covers are available to protect the measuring heads when the measuring system is installed outdoors.

Additional options

• Absolute pressure transducer
• Temperature transmitter