Universal Input Digital Panel Meter, N20

Description PRODUCT DESCRIPTION The N20 meter is a digital programmable panel instrument destined for measurements of d.c. voltages, d.c. currents or temperature. The readout display is a LED display which enables the exposition of results in red, green or orange colour. Parameters of the N20 meter: input: – d.c. current: 0/4…20mA; ±20mA – d.c. voltage: 0…60mV; 0…10V; ±10V – temperature: Pt100, J, K 2 alarm outputs of OC type (4 types of alarms) signaled by highlight of the alarm index, protection level ensured by the housing: IP65, readout field: 5 three-colour LED displays of 14 mm height, highlighted measuring units, supply: 85…253 V a.c./d.c. or 20…40 V a.c./d.c. overall dimensions: 96 x 48 x 64 mm. For the configuration of the N20 is destined LPConfig program. The meter must be connected with the PC computer through a PD14 converter. Parameters which can be reprogrammed are as follows: display colour, individually in three intervals, thresholds of displayed overflows, display precision of the result (decimal point), highlight of the unit, kind of the measured signal a.c. or a.c. d.c. (True RMS), averaging time of the measurement, recounting of indications (individual characteristic), two alarms of OC type operating in six working modes. SPECIFICATIONS Measuring ranges INPUTS: INPUTS:   Measuring range of Un voltage: -11…-10… 60…66 mV -1…0… 10…11 V -11…10… 10…11 V input resistance > 1 MΩ Measuring range of In current: -1…0… 20…22 mA 3,6…4… 20…22 mA – 22…- 20… 20…22 mA input resistance 10Ω ± 1% input resistance 10Ω ± 1% input resistance 5Ω ± 1% Temperature measurement through Pt100 – 50… 400°C current flowing through the sensor < 300 mA Resistance of wires connecting the resistance thermometer to the meter ≤ 10Ω (of one wire) Temperature measurement through thermocouple J – 50… 1200°C Temperature measurement through thermocouple K – 50… 1370°C Preheating time 30 min. Intrinsic error (at manufacturer settings) ± (0.2% of the range 1 digit) Additional errors in rated operating conditions: compensation of reference junction temperature changes ± 0.2% of the range compensation of wire resistance changes ± 0.2% of the range from ambient temperature changes ± (0.1% of the range/10K) Averaging time ± 0.5 s (1 s by default) Alarm outputs outputs of OC type (30 V, 20 mA), passive outputs acc. EN 62053-31 Output to supply external transducers 24 V ± 5% 30 mA Rated operating conditions: supply voltage 85…253 V a.c. (45…65 Hz) or d.c. 20…40 V a.c. (45…65 Hz) or d.c. ambient temperature – 10…23…55ºC storage temperature – 25… 85ºC relative air humidity < 95% (condensation inadmissible) working position any Sustained overload capacity measurement of voltage, current: 10% Short duration overload capacity (3 s): sensor inputs 30 V voltage input 10 Un current input 10 In Readout field 5-digit three-colour LED displaydigit height: 14 mm, colours: green, orange, red, indication range: -19999…99999 Ensured protection level from frontal side IP 65 acc. EN 60529 Dimensions 96 x 48 x 64 mm (with terminals) Panel cut-out dimensions 92 0,6 x 45 0,6 mm Weight < 0.25 kg Power consumption < 6 VA Electromagnetic compatibility: noise immunity acc. to EN 61000-6-2 noise emission acc. to EN 61000-6-4 Safety requirements acc. to EN 61010-1: isolation between circuits basic installation category III pollution degree 2 maximal phase-to-earth working voltage   for supply circuit 300 V (at supply 85… 253 V) for measuring input 50 V for input destined for programming 50 V altitude above sea level < 2000 m  Connection Diagrams Fig. 1 Electrical Connections of the N20 Meter Fig. 2 Connections of Measuring Inputs Thermocouple J, K Current input Voltage input RTD in a two-wire system RTD in a three-wire system