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Product description
The K-114 BT interface converter is recommended to communicate with digital products from KELLER, such as
pressure transmitters, manometers, or autonomous data loggers.
The interface converter supports two modes of operation:
– Communication via Bluetooth
– Communication via USB
The K-114 BT converter converts the serial signals of an RS485 interface into either Bluetooth or USB format. The
converter can be supplied with power autonomously, via the integrated battery, or via a USB interface. In this way,
the converter also supplies power to the connected devices. The battery can be charged via the USB interface.
The converter measures available supply voltage and power consumption of connected devices. These signals can
be evaluated and displayed using the supplied software. Bias or termination resistors may be activated if necessary
in order to improve communication via the RS485. The device is configured using the „K114_Config“ software.
Bluetooth
General
The K-114 BT interface converter has a Bluetooth Classic 3.0 interface and a typical range of up to 10 m (device
class 2). The partner device (master/PC) must support Bluetooth Classic 2.1 or higher.
Function
When the device is switched on, the Bluetooth module is activated automatically and the interface converter is visi-
ble to other Bluetooth devices. The K-114 BT must be paired with the receiving device before a connection can be
established. Once a Bluetooth connection has been established, the interface converter can no longer be accessed
by other Bluetooth devices.
If you want to communicate via the USB interface of the converter, any existing Bluetooth connections must be
terminated. If Bluetooth communication is established, any existing USB connection is interrupted.
Contents
Product description
21
Bluetooth
21
General
21
Description 21
Pairing/connecting via Bluetooth for the first time
22
USB
23
General
23
Communication 23
Battery/charging 24
Technical specifications
25
RS485 interface
26
Product overview
27
Pin assignment for the converters and connections
27
LED display
28
Error analysis support
30
System requirements for K-114_Config software
31
Factory configuration K-114 BT
31
Function overview
31
K-114_Config software
32
Installation 32
Execution 32
Voltage and current measurement
33
Warnings and messages in the software
34
Error analysis/support
35
Recording K-114 BT measurements
36
RoHS
36
Disposal
36
Declaration of conformity
37