LUMEL

Digital bar-graph meter
NA series LUMEL

Programmable meters with bargraph indicators NA21 and NA22 types are destined to measure a.c. current, a.c. voltage, temperature, resistance and other non-electrical magnitudes like level, flow, pressure, humidity converted into an electrical signal.

*
input: programmable
o voltage 0...300 mV, 0...200V, - 5...60V,
o current 0...200 mA, 0...2A,
o temperature: thermocouples, resistance thermometers,
o 0...400W
* output: programmable - relay, analog, digital RS-485 with MODBUS protocol,
* display field:
o NA21 type - fluorescent displat, 3 digits 5 mm high,
bargraph 84mm long (100 segments), 1 measuring channel,
o NA22 type - 2 displays with 3 LED digits 7,6mm high,
2 bargraphs 92mm high, 2 measuring channels.
* supply: 95...230...253 V a.c./d.c., 20...24...40 V a.c./d.c.

Next to programmable measuring functions meters have many additional functions:

* signalling of alarm states,
* re-count of the input signal into indication based on individual linear characteristic,
* programmable bargraph resolution,
* programmable continuous output,
* programmable indication value,
* supply of object transducers,
* RS-485 digital output with MODBUS (ASCII or RTU) transmission protocol,
* galvanic isolation,
* fixing in the panel.
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