5.1.1 Sensor programming. Ahlborn ALMEMO 2790, MA2790BTFV

5. Introduction

5.1.1 Sensor programming

The measuring channels are programmed, completely and automatically, via the ALMEMO ® plugs; they are ready-to-operate immediately. However, via interface cable ZA1919-DKUx the user can still add to or modify the programming. (see Man. 6.3) Or, alternatively, the sensors can be programmed on the

ALMEMO ® data logger.

5.1.2 Process control

In order to transmit measured values from all measuring points to the data logger in digital form measuring point scanning must be performed continuously with measured value output according to a time-based process control. A cycle is provided for this purpose.

Cycle

The cycle can be programmed to any value between 0 minutes and 99 hours.

This cycle governs the cyclic output of measured values over a wireless link or to the interface. If the cycle is set to 0, data is transmitted continuously; in this case the sensor device should be powered from an external source.

With settings upward of 1 minute the sensor device automatically adopts sleep mode ; it only resumes normal status when the cycle completes. This ensures a longer battery life if power is being supplied in battery mode.

Data transmission

As soon as the cycle starts, measured values from the first four active channels are transmitted from the wireless measuring instrument cyclically via the wireless link to the wireless sensor module plugged in at a sensor socket on the ALMEMO ® measuring instrument. The measuring range displayed here is the digital range 'DIGI' with the appropriate units and the original designation.

Measured value correction is performed in the wireless measuring instrument; parameters are not transmitted to the receiving device (see 14).

10 ALMEMO ® 2790