N25 LUMEL | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 2
Technical content
Export department: tel.: (+48 68) 45 75 130, e-mail: export@lumel.com.pl LUMEL S.A. ul. Słubicka 4 65-127 Zielona Góra WWW.LUMEL.COM.PL N25 DIGITAL PANEL METERS Galvanic isolation: inputs: outputs: Features: Example of application
- Destined for measurement of d.c. voltage or d.c. current, temperature through Pt100 resistance thermometers,
- 5 LED digit displays with 14 mm digit high.
- Parameters programmable by PD14 programmer: – precision of displayed results (decimal point), – measurement averaging time, – recounting of indications (individual characteristic), – automatic or manual compensation: cold junction temperature for measurement with thermocouples or wire resistance for measurement with Pt100 (N25T). Measurement and display: - temperature - analog signals - d.c. current and voltage - rms current and voltage. Inputs Type Measuring ranges Parameters Overloads Errors N25S Input resistance >1 MΩ Short duration overload (1s): - voltage input: 10 Un - current input: 5 In Sustained overload: 110% Un, 110% In Basic error: ± (0.2% of range + 1 digit) Additional error from ambient temperature changes: ± (50% of basic error/10K) N25T Pt100 -50˚C...150˚C Current flowing through the sensor: < 300 µA. Resistance of wires connecting RTD with the meter: - max 5 Ω (per wire) for automatic compensation - max 10 Ω (per wire) for manual compensation Short duration overload (1s) Input of sensors: 30 V Basic error: ± (0.2% of range + 1 digit) Additional errors:
- compensation of cold junction temperatu- re changes: ± 0.2% of range,
- from ambient temperature changes: ± (50% of basic error/10K). -50˚C...400˚C Thermo- couple J -50˚C...1200˚C Thermo- couple K -50˚C...1370˚C N25Z Input resistance > 2 MΩ Short term overload (1s): voltage input: 2 Un (< 1000V), current input: 10 In Sustained overload: 150% Un (for 400 V input), 120% (for remaining inputs), 120% In Basic error:
- voltage and current: ± (0.5% of range + 1 digit) in frequency range 20...500 Hz
- frequency: ± (0.02% of range + 1 digit) Additional error from ambient temperature changes: ± (50% of basic error/10K) 20...500 Hz (in voltage range: 24...480 V) N25H Input resistance > 2MΩ Short term overload (1s): voltage input: 2 Un (< 1000V), current input: 10 In Sustained overload: 150% Un (for ± 400 V input), 120% (for remaining inputs), 120% In Basic error: ± (0.2% of range + 1 digit) Additional error from ambient temperature changes: ± (50% of basic error/10K) Outputs For N25S and N25T Output for supply external transducers 24 V ± 5%, 30 mA N25 digital meter 60 mV Current shunt a.c. current transformerTemperature Pt100 probe PD14 programmer Supplying output 24 V d.c. configuration with free eCon software
Table 3. codes of printed units:
03 A 09 Hz
Table 4. Example of non-standard settings: Table 2. Input signals Table 1. Ordering codes: