GUILCOR AR004740, Инструкция по эксплуатации, Страница: 4 / 7

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Typical application wiring
Calculation of minimum power voltage Uss
for proper operation:
Uss min> Uo min+Imax*Rz,
where: Uo min= 9 V
Imax... approximately 20 mA
Rz... sensing resistor (shunt)
LCD Info mode
Several settings of installed transmitter are possible to verify without using computer. It is
necessary to connect at least power of current loop I1.
Unscrew the transmitter lid and shortly press button between display and interconnection
terminals by means of a tool (e.g. screwdriver).
Range and type of value for output 1 (current loop I1 = symbol „1“ on
display). Type of value, assigned to output 1, is indicated by displayed unit
(here °C = temperature). Upper line displays current value corresponding to
measured value (lower line). Here 4 mA corresponds to -30 °C.
Press button again to get value for upper point (same output, same value)
similarly as at previous point. Here 20 mA corresponds to 80 °C.
Press button again to end info mode and display actual measured values.
Notice: during info mode no measurement and no output current generation
proceed. The transmitter stays at info mode 15 s and then automatically goes back to measuring
cycle.
Readings on LCD display
°C, °F
Reading next to this symbol is measured temperature or error state of value.
Choice of optimal power voltage and load
resistor for current loop.
area no 1 ..... transmitter doesn’t work correctly
area no 2 ..... optimal Uss and Rz
area no 3 ..... transmitter is working but it is
possible to see undesirable warm
influence.