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1. APPLICATION AND METER DESIGN
The N30U meter is a programmable digital panel meter destined for
measurements of signals originating from standard sensors destined
for temperature measurements and for the measurement of analog
standard signals applied in automation. Additionally, the meter enables
the indication of the current time. The readout field is a LED display,
which allows the exposition of results in colours: red, green and orange.
The measured input signal can be arbitrary converted by means of a
21-point individual characteristic.
Features of the N30U meter:
ldisplay colour individually programmed in three intervals,
lprogrammable thresholds of displayed overflows,
l2 NOC relay alarms operating in 6 modes,
l2 switched relay alarms with a switching contact operating
in 6 modes (option),
lsignaling of measuring range overflow,
lautomatic setting of the decimal point,
lprogramming of alarm and analog outputs with the reaction on the
selected input quantity (main or auxiliary input),
lreal-time clock with the function of the clock supply support in case
of the meter supply decay,
lprogrammed averaging time – function of walking window with the
averaging time up to 1 hour,
lmonitoring of set parameter values,
llocking of introduced parameters by means of a password,
lrecount of the measured quantity on the base of the 21-point
individual characteristic,
lservice of the interface with MODBUS protocol in the
RTU mode (option),
lconversion of the measured value into a standard – programmable
current or voltage signal (option),
lhighlight of any measuring unit acc. to the order,
