PCE Instruments PCE-N24 Series Bedienungsanleitung

DIGITAL PANEL METER

N24 AND

N25 SERIES

USER’S MANUAL

PCE Americas Inc.

711 Commerce Way

Suite 8

Jupiter

FL-33458

USA

From outside US: +1

Tel: (561) 320-9162

Fax: (561) 320-9176

[email protected]

www.pce-instruments.com/english

www.pce-instruments.com

PCE Instruments UK Ltd.

Unit 11

Southpoint Business Park

Ensign way

Hampshire / Southampton

United Kingdom, SO31 4RF

From outside UK: +44

Tel: (0) 2380 98703 0

Fax: (0) 2380 98703 9

[email protected]

Contents

1. APPLICATION .............................................................................5

2. METER SET .................................................................................5

3. OPERATIONAL SAFETY ............................................................6

4. INSTALLATION............................................................................7

4.1 Fixing Way ............................................................................7

4.2 External Connection Diagrams ..............................................8

5. SERVICE ...................................................................................10

5.1 Display Description .............................................................10

5.2 Messages after Switching the Supply on ............................10

5.3 Meter Configuration by Means of LPCon/eCon Program ..11

5.4 Manufacturer’s Parameters of N24S, N25S .. 12

5.5 Manufacturer’s parameters of N24T, N25T ... 12

5.6 Manufacturer’s Parameters of N24Z, N25Z .......13

5.7 Manufacturer’s Parameters of N24H, N25H ......14

6. ERROR CODES ........................................................................15

7. TECHNICAL DATA ...................................................................15

7.1 Technical Data of ..........................15

7.2 Technical Data of .................. 16

7.3 Technical Data of ..........................17

7.4 Technical Data of ..........................17

7.5 Common Technical Data

for the Whole N24 and N25 Series ...................18

8. ORDER CODES ........................................................................20

9. SERVICE AND MAINTENANCE ...............................................23

1. APPLICATION

Meters of the N24 and N25 series are digital instruments destined

for the measurement of d.c. voltage or d.c. current: uni or bipolar,

temperature through J, K thermocouples, Pt100 resistance thermometers

and for the measurement of a.c. voltage and a.c. current. A LED display

(4 digits for N24 and 5digits for N25 meter series) constitutes the

readout field. The program is destined for the configuration

of N24 and N25 meter series. One must connect the meter with

the PC computer through the PD14 programmer.

ollowing parameters can be reprogrammed:

- thresholds of displayed overflows,

- precision of the displayed result (decimal point),

- measurement averaging time ,

- counting of indications (individual characteristic),

- automatic or manual compensation: cold junction temperature for

measurements with thermocouples, or wire resistance for Pt100

measurements (only in N24T and N24S meters).

All meters are galvanically separated between the supply, measuring

inputs and the programmer input

Protection grade from the frontal side: IP65.

Meter overall dimensions: 96 x 48 x 64 mm (with terminals).

2. METER SET

The set is composed of:

– Meter types: N24 or N25 ............................................1 pc

– User’s manual............................................................................1 pc

– Clamps to fix in the panel..........................................................4 pcs

When unpacking the meter, please check whether the type and exe-

cution code on the data plate correspond to the order. If equipment is

incomplete or appears to be damaged, file immediately a claim with the

carrier and notify the sender at once.

3. BASIC REQUIREMENTS, OPERATIONAL

SAFETY

In the safety service scope, the meter meets the requirements of the EN

61010-1 standard.

Meaning of the symbol:

Caution: risk of hazard.

Observations concerning the operational safety

· All operations concerning transport, installation, and commissioning

as well as maintenance, must be carried out by qualified, skilled

personnel, and national regulations for the prevention of accidents

must be observed.

· The programming of N24 and N25 meter series

parameters must be carried out after disconnecting measuring circuits

· Before switching the meter on, one must check the correctness of

connections to the network.

·Do not connect the meter tothe network through an autotransformer.

· Before removing the meter housing, one must switch the supply off

and disconnect measuring circuits.

· The removal of the meter housing during the guarantee contract

period may cause its cancellation.

·The meter fulfills requirements related to electromagnetic compa-

tibility and can be us ed in the industrial electromagnetic environment

· When connecting the supply, one must remember that a switch or a

circuit-breaker should be installed in the building. This switch should be

located near the device, easy accessible by the operator, and

suitably marked as an element switching the meter off.

· Non-authorized removal of the housing, inappropriate use, incorrect

installation or operation, creates the risk of injury

to personnel or meter damage.

For more detailed information, please study the U ser’s Manual.

Fig. 2. Overall dimensions

Fig. 1. Meter ﬁxing

4. INSTALLATION

4.1. Fixing Way

The meter has separable strips with screw terminals which enable the

connection of external wires of 2.5 mm 2cross-section. In execution for

current measurement, the plug enables a permanent fixing to the so-

cket by means of screws. The meter is adapted to be mounted in a

panel by means of clamps, acc. to the fig. 1.

One must prepare a hole of 92+0,6 45+0,6 mm in the panel which the

thickness should not exceed 6 mm.

The meter must be introduced from the panel front with disconnected

supply voltage. Before the insertion into the panel, one must check the

correct placement of the seal. After the insertion into the hole, fix the

meter by means of clamps (fig.1).

4.2. External Connection Diagrams

4.2.1 Electrical Connections of the N24S and

N25S Meters

Fig. 3. Electrical connection of the N24S, N25S meters

4.2.2 Electrical Connection of the PCE-N24T and PCE-

N25T Meter

Fig. 4. Electrical connection of the N24T, N25T meters

PCE-PD14

Fig. 5. Connections of the N24T and N25 T measuring

inputs

Resistance thermometer in a

two-wire system and with

manual compensation

Resistance thermometer in a

three-wire system and with

automatic compensation

Thermocouple J, K

4.2.3 Electrical Connections N24Z, N24H and

N25Z, N25H Meters

Fig. 7. Electrical connections of N24Z, N25Z and

N24H, N25H meters for the current measurement.

Fig. 6. Electrical connections of N24Z, N24H and

N25Z, N25H meters for the measurement of voltage (and

frequency measurement only for the N24Z and N25Z

meters)

PCE-PD14

5. SERVICE

5.1. Display Description

Fig. 8. Frontal panel

5.2. Messages after Switching the Supply on

After switching the supply on, the meter displays the meter name ap-

propriate to the kind of measured signal: N24e, N25E where Eis

the appropriate execution of the s,t,2,h . meter and next, the

program version in the shape rx.xx – where x.xx is the number of

the current program version or the number of a custom-made

execution. Till the time to obtain the required number of correct

measurements (acc. to the table 1 – for N24S, N24T,

N24H, N25S, N25T, N25H meters or acc. to the table

2 – for N24Z and N25Z meters) the arithmetical mean value

from until now measurements is displayed. The measurement of a value

Measured

value

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