BECKHOFF KL3681 - Manual (Page 7)

Product overview
2 Product overview
2.1 Introduction
Fig. 1: KL3681­0000
Digital Multimeter Terminal
The KL3681 Bus Terminal enables measurement of currents and voltages in a wide input range. The
measuring ranges are switched automatically, as usual in advanced digital multimeters. For current
measurements, two current paths are available, one of which is a high­current path for up to 10 A. The
current and the voltage measurement facility can be used for DC and AC. The alternating parameters are
output as true RMS values. The measurement readings can be read and processed with commercially
available fieldbus systems. At the same time, the KL3681 enables the measuring type and range to be set
via the bus.
Excellent interference immunity is achieved through the fully electrically isolated design of the electronic
measuring system and the dual­slope conversion system. High precision and simple, high­impedance
measurement from 300 mV to 300 V allow the Bus Terminal to be used like a digital multimeter.
In measuring applications in particular, the voltage to be expected is often not yet known during the planning
phase. Automatic adjustment of the measurement range simplifies use and reduces stock levels. The
selected measuring type and overload are indicated by LEDs.
KL3681, KS3681 7 Version 2.0.0