Frequently Asked Questions.
What is a Transmitter ?
A transmitter is defined as a device with a 4÷20 mA output. It is measured in series with the power supply and is in the form of a loop. This mode of measurement is also defined as “Two-wire technique”.
Datexel transmitters are suitable for DIN B in-head mounting or DIN rail mounting in compliance with the standards EN-50022 and EN-50035 .
The devices are divided into standard industrial applications or devices for use in potentially explosive atmospheres with or without galvanic isolation. These modules have been developed to provide an output, proportional to the measured input coming from the temperature sensors or process signals.
Datexel Transmitters are supplied fixed range, programmable by dip-switches and by a personal computer.
A converter is defined as a device with one or more output signals which are not on the same terminals as the power for the device.
This mode of measurement is also defined as “Three-wire technique” or “Four-wire technique”.
The converters are suitable for DIN rail mounting in compliance with the standards EN-50022 and EN-50035.
The devices are divided into standard industrial applications or devices for use in potentially explosive atmospheres with or without galvanic isolation. These modules have been developed to provide an output, current or Voltage proportional with the value measured on input coming
from temperature sensors or process signals.
Datexel Converters are supplied with fixed range, programmable by dip-switches and by a personal computer.
What is a REMOTE I / O MODULE ?
Remote I/O modules are defined as a device dedicated to the communication of measured data to a remote terminal unit using the MODBUS RTU/ASCII protocol on a multi-point network.
The devices are suitable for DIN rail mounting in compliance with the standard EN-50022; all the devices are galvanic isolated .
The series includes:
● modules with analog input to measure one or more signals coming from temperature sensors or normalized signals;
● modules with analog output either voltage or current;
● modules with relay or PNP and NPN transistor digital inputs and outputs;
● repeaters of serial lines to allow data transmissions with high immunity from the interferences.
● converters of serial lines to allow data transmissions to different communication interfaces like RS-232, USB and Ethernet TCP/IP).
What is an A/D INTERFACE FOR PLC Module ?
A/D interfaces for PLC are defined as devices with digital output directly connected to the controller of a PLC which synchronizes the data transmission.
This allows digital PLC to read Analog signals.
The devices are suitable for mounting on DIN rail in compliance with the standards EN-50022 and EN-50035; all the devices are galvanically isolated.
It is possible to connect input signals coming from temperature sensors or normalized signals.
A trip amplifier is defined as a device that allows an Analog signal to be converted to a Digital output. The digital output controls the variation of a physical unit in a system measured by temperature sensors or
normalized signals and operates when the measured value goes outside predetermined limits, energizing or de-energizing the relay controlling devices like valves and actuators.
The devices are suitable for DIN rail mounting in compliance with the standards EN-50022 and EN-50035; all the devices are galvanically isolated.
It is possible to connect input signals coming from temperature sensors or normalized signals.
The setting of the parameters are made by potentiometers or via software.
Power supplies are defined as devices that, with the AC line voltage on input, provide on output one or more regulated DC voltage.
The devices are suitable for DIN rail mounting in compliance with the standards EN-50022 and EN-50035.
Isolators are defined as devices that galvanically isolate the input and the output of the signals or the Power supply.
The devices are suitable for DIN rail mounting in compliance with the standards EN-50022 and EN-50035.
What does Loop Powered mean?
DAT 733
Q Does the DAT 733 indicator need a power supply?
A No, it is self powered and gets it's power from the loop.
DAT511
Q I have a problem that the 4-20mA output of my Instrument keeps jumping around. Do you think a DAT511 would help?
A Yes, the DAT511 is designed to float the 4-20mA output of a loop. It removes the negative from ground.