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1. APPLICATION AND METER DESIGN
The N30H meter is a programmable digital panel meter destined for
the measurement of d.c. voltage or d.c. current. 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 N30H 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 the measuring range overflow,
lautomatic setting of the decimal point,
lprogramming of alarm and analog outputs with the reaction
on the chosen 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,
linterlocking of introduced parameters by means of a password,
lrecount of the measured quantity on the base of a 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.
