N30U Digital Panel Meter

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 colors: 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:
l display colour individually programmed in three intervals,
l programmable thresholds of displayed overflows,
l 2 NOC relay alarms operating in 6 modes,
l 2 switched relay alarms with a switching contact operating in 6 modes (option),
l signaling of measuring range overflow,
l automatic setting of the decimal point,
l programming of alarm and analog outputs with the reaction on the selected input quantity (main or auxiliary input),
l real-time clock with the function of the clock supply support in case of the meter supply decay,
l programmed averaging time – function of walking window with the averaging time up to 1 hour,
l monitoring of set parameter values,
l locking of introduced parameters by means of a password,
l recount of the measured quantity on the base of the 21-point individual characteristic,
l service of the interface with MODBUS protocol in the RTU mode (option),
l conversion of the measured value into a standard – programmable current or voltage signal (option),
l highlight of any measuring unit acc. to the order,

l signaling of alarm operation – switching the alarm on causes the highlight of the output number,
l galvanic separation between connections: alarm, supply, input, analog output, output of the auxiliary supply, RS-485 interface.
Protection grade from frontal side: IP65
Meter overall dimensions: 96 x 48 x 93 mm (with terminals).
The meter casing is made of plastic.

Description

 

  • Input:
    • Temperature:
      • resistance thermometers: Pt100, Pt500, Pt1000
      • thermocouples: J, K, N, E, R, S
    • resistance: 400 ohm, 4000 ohm
    • current: ± 20 mA
    • voltage: 0…10 V, -10…60 mV
  • Output: relay (4), analog (1), digital RS-485/MODBUS (1),
  • Three-colour display – red, green and orange, programmable in three intervals of the measured value – facilitates the observation of measured value changes.
    • digit height: 14 mm
    • highlighted measuring unit
  • Four alarm outputs with signaling on LED diodes operating in six different modes.
  • Conversion of any measured value into an analog signal: 0/4…20 mA or 0…10 V.
  • Storage of minimal and maximal values for all measured quantities,
  • Meter programming from the keyboard or through the RS-485 interface by means of the free LPConfig program.
    One can reprogram following parameters:

    • display colour, individually in three intervals,
    • thresholds of displayed overflows,
    • display precision of the result (decimal point),
    • unit highlighting,
    • measurement averaging time,
    • recount of indications (individual characteristic),
    • parameters of alarm outputs.
  • Supply: 85…253 V a.c./d.c. or 20…40 V a.c./d.c.
  • Casing protection grade : IP65
  • Overall dimensions: 96 x 48 x 64 mm