product description

OMNI: evaluation electronic with analog output, switching function and display

General information:

The electronics can be used on the spot to set switching values where process values are exceeded or fallen below. This setting can be carried out via the display even without a process. The present values or error messages from the measuring point are visible at any time and all major parameters can be accessed on the spot. The analog current signal can be evaluated from large distances and the present values can be made available there. If desired, the sensor can be configured at the factory with your parameters. It is therefore ready for immediate use, without programming. If you wish to change parameters, you can set the device directly at the sensor by means of the programming ring.

The entire family of OMNI sensors is made up in a modular way, by means of a building-block system (hardware and software). A 16-bit microcontroller with a 14-bit A/D converter and a 12-bit D/A converter ensure the necessary processing speed and accuracy. The signal is displayed by a backlit LCD graphical display and is converted into a 0/4 mA to 20 mA signal. Two switching values with a choice of PNP or NPN output can be programmed across the whole range. The hysteresis of the switching values can be set separately in value and direction (min., max. switching value).

Exceeding or falling short of switching values and error messages are indicated by a flashing red LED visible from a long distance, together with a message in the display.

Further parameters can be modified by means of a code:

Signal filter, selectable unit (l/min, m³/h, etc.) incl. automatic conversion of the values, selectable output 0 mA to 20 mA, 4 mA to 20 mA, 0 V to 10 V or 2 V to 10 V, value assignment of 0/4 mA to 20 mA or 0/2 V to 10 V (setting of zero point and range).

For commissioning, the sensor supports a simulation mode for the analog output. It is possible to create a programmable mA value at the output (without modifying the process variable). The range is 0 mA to 20 mA. This allows the wiring run between the sensor and the downstream electronics to be tested during commissioning.

The complete housing can be rotated around the mechanical connection, and so after sealing, the correct position for reading can be set. Operation is through dialog with the display messages. It is possible to reset to the factory settings at any time.

Specifications:

Appliance:	flow, control, indication
Medium:	water, oils (gases and aggressive media on request)
Total measuring range:	0.1 l/min to 80 l/min H₂O
Connection:	G 1/4 to G 1 internal thread, brass
Basic data:	PN 200 bar (optionally PN 500 bar), temperature of medium -20°C to +85°C, optionally -20°C bis +150°C