EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual V1
Pg. 6
4. Introduction
The 4...20mA converter called "A-Box" is a digital signal conditioner to convert the Voltage output of a solar
radiation sensor into a 4...20mA current output. The converter can be used with all passive EKO radiometers or
any other mV sensor to be connected to data loggers or inverters with a 4...20mA input channel. By using the
signal conditioner the sensor cable can be easily extended over long distances without any signal loss or potential
electromagnetic interference in noisy industrial environments.
For easy conversion the A-Box output in combination with a solar sensor can be set to 4-20mA | 0 - 1600 W/m
2
. In
this case the sensitivity factor of the solar sensor will be set to the converter. With the optional USB controller and
EKO Sense software (Multiple languages) the converter settings can be freely changed. This tool will be needed in
case the sensor sensitivity might need to be changed after a periodical solar sensor re-calibration.
For practical installation, the converter is placed in an IP65 Aluminium box with universal cable glands. It has
robust input/output screw terminals, which can be easily connected to the signal cable that leads to the
measurements system at the installation site. EKO can pre-connect the solar sensor cable to simplify your
process.
4-1. Main Functions
•
The 4-20mA Signal Converter proportionally converts the solar sensor output voltage (V) into a
current (mA).
•
Easy signal conversion 4-20mA = 0 – 1600 W/m2 with pre-set sensitivity
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
In case of a sensor re-calibration, the converter-setting scan be easily changed with the optional
USB controller and EKO sense software.
Tel.: +11 3976-4003 • 3999-7737
www.romiotto.com.br