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LUMEL

LUMEL

N25

Universal input digital meter for measurement of d.c. voltage or d.c. current, temperature from Pt100 sensors and J, K thermocouples, a.c. voltage and a.c. current.

  • Universal input (Programmable)
  • Wide voltage, AC/DC control
  • 5 Digit LED display

Product description

Inputs

Model

Measuring ranges

Parameters

Overloads

Errors

N24S
N25S

-11 mV..-10mV..60mV..66mV

input resistance: >1MΩ

Short duration overload
(3s): 10 Un
Sustained overload:10%

Basic error (at manufacurer’s settings):
±(0.2% of range + 1 digit)
Additional error from ambient
temperature changes: ±(50% of basic
error/10K)

-1V..0V..10V..11V

-11V..-10V..10V..11V

-1mA..0mA..20mA..22mA

input resistance: 10Ω ±1%

Short duration overload
(3s): 10 In
Sustained overload:10%

3.6 mA..4mA..20mA..22mA

-22mA..-20mA..20mA..22mA

input resistance: 5Ω ±1%

N24T
N25T

Pt100

-50˚C..150˚C

current flowing through
the sensor <300 μA
Resistance of wires
connecting thermometer
with meter: 10Ω (per wire)

Short duration overload
(3s) (input of sensors):
30V

Basic error (at manufacturer’s
settings): ±(0.2% of range + 1 digit)
Additional errors in rated operating
conditions compensation of cold
junction temperature changes: ±0.2%
of range from ambient temperature
changes: ±(50% of basic error/10K)

-50˚C..400˚C

Thermocouple J

-50˚C..1200˚C

 

Thermocouple K

-50˚C..1370˚C

N24Z
N25Z

1..100..120 V a.c.

input resistance > 2MΩ

Short duration overload
(3s): 2 Un (<1000V)
Sustained overload 20%

Basic error (at manufacturer’s
settings): voltage and current: ±(0.5%
of range + 1 digit) in frequency interval
20..500Hz frequency: ±(0.02% of
range + 1 digit) Additional error from
ambienttemperature changes: ±(50%
of basicerror/10K)

2,5..250..300 V a.c.

4..400..600 V a.c.

20..500 Hz
(in voltage range: 24..480 V)

0.01..1..1.2 A a.c.

input resistance:
50mΩ ±10%

Short duration overload
(3s): 10 In Sustained
overload 20%

0,005..5..6 A a.c.

input resistance:
10mΩ ±10%

N24H
N25H

-1..50..55 V d.c.

input resistance > 2MΩ

Short duration overload
(3s): 2 Un (<1000V)
Sustained overload 10%

Basic error (at manufacturer’s
settings): ±(0.2% of range + 1 digit)
Additional error from ambient
temperature changes: ±(50% of basic
error/10K)

-3..200..220 V d.c.

-120..-100..100..120 V d.c.

-300..-250..250..300 V d.c.

-480..-400..400..480 V d.c.

-0.1..1..1.1 A d.c.

input resistance:
50mΩ ±10%

Short duration overload
(3s): 10 In Sustained
overload 10%

-1.2..-1..1..1.2 A d.c.

-0.1..5..5.5 A d.c.

input resistance:
10mΩ ±10%

-6..-5..5..6 A d.c.


Outputs

Model

Output

Voltage

For N24/ N25 S&T

Output for supply external transducers

24V ± 5% 30 mA


External features

Weight

<0,25 kg

 

Dimensions

96 x 48 x 64 mm

 

Protection level(acc. to EN 60529)

ensured by the housing: IP65

from the terminal side: IP20

Display

4-digit LED display, 20 mm height, red colour
5-digit LED display, 14 mm height, red colour

indication range: -1999..9999
indication range: -19999..99999


Rated operating conditions

Supply voltage

230 V ± 10% a.c. (45..65 Hz); 110 V ± 10% a.c. (45..65 Hz)
110 V ± 10% a.c. (45..65 Hz);
85..253 V a.c. (45..65 Hz) or d.c.;20..40 V a.c. (45..65 Hz) or d.c.

input power consumption: 6 VA

Temperature

ambient: -10..23..55 ˚C

storage: -25..85 ˚C

Relative humidity

≤ 95%

condensation inadmissible

Working position

any

 

Preheating time

30 min

 

Averaging time

≥ 0,5 s

1 second set by default


Safety and compatibility requirements

Electromagnetic compatibility

Noise immunity
Noise emission

acc. to EN 61000-6-2
acc. to EN 61000-6-4

Insulation between circuits

basic

acc. to EN 61010-1

Pollution degree

2

Installation category

III (for the 400V option - category II)

Maximal phase-to-earth working
voltage

for the supply circuit: 300V

for the measuring input: 600V - category II (300 V cat. II)

for the programming input: 5V

Altitude above sea level

<2000 m

 

Ordering information

Please refer to the image below for ordering information.

 

Number of variants matching filter 115/115 |

Part numbers

Parts Price Supply voltage
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc
240 V ac
110V ac
24V ac
85-230V ac
20-40V ac/dc

Part

N25H11XX
5 Digit Panel Meter, ±100V DC input, 240V ac

Technical data

Digit height 14 mm
IP class IP65
Number of digits 5
Supply voltage 240 V ac
Temperature operational max 55 °C
Temperature operational min -10 °C
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