digital panel meter n24 and n25 meter series user`s manual
Contents
1. Parameter description Range value Manufacturer s Manufacturer s P N24 N25 value N24Z value N25Z 0000 000 0 00 00 0 000 00000 0000 0 000 0 for U f 0000 0 for U f 000 00 00 000 0 000 for 0000 0 for 0 0000 0 5 s 1s 3s 5s Averaging time is s is 50 3 1 8 1s 1 min 2 min 5 min 7 min 12 min 15 min Decimal point dd disabled enabled disabled disabled characteristic Parameter a of the in 1999 9999 1 1 dividual characteristic 19999 99999 Parameter b of the in 1999 9999 dividual characteristic 19999 99999 Upper overflow of the 1999 9999 19999 99999 oe ee Lower overflow of the 1999 9999 19999 99999 iiid iiid 13 5 7 Manufacturer s Parameters of N24H and N25H Meters Table 6 Parameter description Range value Manufacturer s Manufacturer s P N24 N25 value N24H value N25H 0000 000 0 00 00 Be i 0 000 00000 0000 0 0000 0 for U 000 00 00 000 Pre y or 000 00 for 0 0000 unipolar Decimal point 05g 153555 105 15 s 20 s MAAUA disabled enabled disabled disabled characteristic Averaging time Parameter a of the in 1999 9999 1 1 dividual characteristic 19999 99999 Parameter b of the in 1999 9999 dividual characteristic 19999 99999 Upper overflow of the 1999 9999 Lower overflow of the 1999 9999 14 6 ERROR CODES After switching the meter to the network on messages about errors can appear2. Messages about errors and their reasons are presented below Overflow of the upper value of programmed indication range In the option with Pt100 this message also signals incorrect connections of the wire to the terminal 4 Overflow of the lower value of programmed indication range Incorrect values in the meter configuration data One must set up again meter parameters by means of the LPCon program 3 1 Loss of meter calibration values In such case one must contact the service workshop 7 TECHNICAL DATA 7 1 Technical Data of N24S and N25S Meters Measuring range INPUTS Measuring range of voltage Un 11 mV 10 mV 60 mV 66 mV 66 mV 60 mV 60 mV 66 mV 0 5 VW M IO Vig 1 1 V 11 V 10 V 10 V 11 V Measuring range of current In 1mA 0 mA 20 mA 22 mA input resistance 10 1 3 6 mA 4 mA 20 mA 22 mA input resistance 10 1 Basic error at manufacturer s settings 0 2 of the range 1 digit input resistance 1 15 Output for supply external transducers Sustained overload Short duration overload 1 s 24 V 5 30 mA 110 Un 110 In voltage input 10 Un current input 5 In 7 2 Technical Data of N24T and N25T Meters Measuring range INPUTS Pomiar temperatury Pt100 50 C 150 C 50 C 400 C Resistance of wires connecting the resistance Temperature measurement by thermocouple of J type Tem
3. 0 for U 0000 0 for U 0 0000 bipolar bipolar Averaging time 0 5 5 1 9 3 5 5 5 9119 108 15 5 20 s Decimal point uae disabled enabled disabled disabled characteristic Parameter a of the in 1999 9999 dividual characteristic 19999 99999 Parameter b of the in 1999 9999 dividual characteristic 19999 99999 Upper overflow of the 1999 9999 19999 99999 e 9o Lower overflow of the 1999 9999 19999 99999 d nid 5 5 Manufacturer s Parameters of N24T and N25T Meters Table 4 Parameter description Range value Manufacturer s Manufacturer s B N24 N25 value N24T value N25T 0000 000 0 00 00 0000 for J 00000 for J 0 000 00000 0000 0 and K and K 000 00 00 000 thermocouples thermocouples 0 0000 000 0 for Pt100 0000 0 for Pt100 os 13553950953 Decimal point tme 10 s 15 s 20 s ps Individual disabled enabled disabled disabled characteristic Parameter a of the in 1999 9999 1 1 dividual characteristic 19999 99999 Parameter b of the in 1999 9999 dividual characteristic 19999 99999 Automatic compensa tion of terminal tempe disabled enabled disabled disabled rature wire resistance Value of manual com pensation terminal temperature wire resistance Upper overflow of the 1999 9999 Lower overflow of the 1999 9999 20 60 C 0 20 Q 40 0 Q 40 C O Q 5 6 Manufacturer s Parameters of N24Z and N25Z Meters SES
4. with an extra quality inspection certificate Example of additional information for non standard settings Table 10 vmgng me SS ts Parameter b of the individual characteristic 0 22 9 MAINTENANCE AND GUARANTEE The N24 and N25 digital panel meter series do not require any periodi cal maintenance In case of some incorrect operations 1 During the Guarantee Period Defined in the Guarantee Card One should take the meter down from the installation and return it to the Manufacturer s Quality Control Dept If the meter has been used in compliance with the instructions the Manufacturer warrants to repair it free of charge 2 After the Guarantee Period One should turn over the meter to repair it in a certified service workshop The disassembling of the casing causes the cancellation of the granted guarantee Our policy is one of continuous improvement and we reserve the right to make changes in design and specifications of any products as engineering advances or necessity requires and revise the above specifications without notice 23 SALES PROGRAM MEASUREMENT DIGITAL and BARGRAPH PANEL METERS CONTROL MEASURING TRANSDUCERS RECORDING ANALOG PANEL METERS DIN INSTRUMENTS INDUSTRIAL PROCESS and POWER CONTROLLERS CHART and PAPERLESS RECORDERS 1 PHASE and 3 PHASE WATT HOUR METERS LARGE SIZE DISPLAY PANELS ELEMENTS OF INTEGRATION SYSTEMS ACCESSORIES for MEASURING INSTRUMENTS SHUNTS CUSTOM
5. 25H Meters Measuring range INPUTS Measuring range of unipolar voltage Un O 100 110 V d c input resistance gt 2 dog 215 V Ode 17 Measuring range of bipolar voltage Un 120 100 100 120 V d c 300 250 250 900 V input resistance gt 2 600 400 400 600 V d c Measuring range of bipolar current In 1 2 1 1 1 2A d c input resistance 10 MQ 10 6 5 5 6 A d C input resistance 2 MQ 10 Basic error at manufacturer s settings voltage and current 0 2 of the range 1 digit Sustained overload 150 Un only for 400 V input 120 Un for other Un 120 In Short duration overload 1s voltage input 2 Un lt 1000 V current input 10 In 7 5 Common Technical Data for the Whole N24 and N25 Series Rated operating conditions supply voltage 230 V 10 a c 45 65 HZ 110 V 10 45 65 Hz 24 V 10 45 65 Hz 85 293 49 09 HZ or d c 20 40 V a c 45 65 Hz or d c ambient temperature 10 23 55 C storage temperature 25 85 C humidity lt 95 condensation inadmissible work position any 18 Additional errors in rated operating conditions from ambient temperature changes 50 of basic error 10 K Averaging time programmable gt 0 5 s by default 1 s Preheating time 30 minutes Readout field 4 digit LED display N24 series 5 digit LED display N25 serie
6. DIGITAL PANEL METER N24 AND N25 METER SERIES USER S MANUAL Contents 1 APPLICATION ciernes 5 Z2 METER SET tia act 5 3 OPERATIONAL SAFETY 6 A INSTALLATION ondaa ets 7 s Ae AI 7 4 2 External Connection Diagrams 8 5 SERVICE Fe 10 5 1 Display Description sita tics 10 5 2 Messages after Switching the Supply on 10 5 3 Meter Configuration by Means of LPCon 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 siii idas 15 T TECHNICALDATA iii 15 7 1 Technical Data of N24S N25S 15 7 2 Technical Data of N24T N25T 16 7 3 Technical Data of N24Z N25Z 17 7 4 Technical Data of N24H N25H 17 7 5 Common Technical Data for the Whole N24 and N25 Series 18 Be ORDER CODES iii clanes idea 20 9 SERVICE AND MAINTENANCE eene nnne nns 23 1 APPLICATION Meters of the N24 and
7. MADE PRODUCTS ACCORDING CUSTOMER S REQUIREMENTS WE ALSO OFFER OUR SERVICES IN THE PRODUCTION OF ALUMINIUM ALLOY PRESSURE CASTINGS PRECISION ENGINEERING and THERMOPLASTICS PARTS SUBCONTRACTING of ELECTRONIC DEVICES SMT PRESSURE CASTINGS and OTHER TOOLS QUALITY PROCEDURES According ISO 9001 and ISO 14001 international requirements All our instruments have CE mark For more information please write to or phone our Export Department LUMEL Lubuskie Zaktady Aparatow Elektrycznych LUMEL S A ul Sulechowska 1 65 022 Zielona Gora Poland tel 48 68 329 51 00 exchange fax 48 68 329 51 01 e mail lumel lumel com pl Export Department http www lumel com pl Tel 48 68 329 53 02 or 53 04 Fax 48 68 325 40 91 e mail export lumel com pl N24 09B 01 23 01 2012
8. 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 5 digits for N25 meter series constitutes the readout field The LPCon 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 Following 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 sees MANUA A I 1 Guaranies card naa 1pc Clamps to fix in the 4 pcs x EET 1 pc When unpacking the meter please check whether the type and exe cution code on the data plate correspond to the order If equipmen
9. er off e Non authorized removal of the housing inappropriate use incorrect installation or operation creates the risk of injury AN to personnel or meter damage For more detailed information please study the User s Manual 6 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 cross 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 x 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 Fig 2 Overall dimensions 4 2 External Connection Diagrams 4 2 1 Electrical Connections of the N24S and N25S Meters 112345 MEN je 7 8 9jrojtijr2 138 g O gt O Configuration through PD14 24 V 30 mA Supply External transducer supply option Fig 3 Electrical connection of the N24S N25S meters 4 2 2 Electrical Connection of the N24T and N25T Meter Til Il Tt Measuring Configuration 2 M A gt 0 signals through PD14 4 im Sup
10. he arithmetical mean value from until now measurements is displayed The measurement of a value 10 from behind the measuring range causes the setting of the overflow and the beginning of the counting of correct measurements again The time 15 set by the manufacturer 1 sec Table 1 8 005050000 measurements 0 5 5 0 55 0 5 0 55 0 55 0 55 055 on the display Table 2 measurements Updating of the va lo 55 9 sslo 5slo 5slo 5slo sslo 5sl0 5slo 5sLo 5sl0 5s 0 55 9 18 lue on the display In case of any error occurrence or exceeding of the range value one of the message described in the section 6 will be displayed 5 3 Meter Configuration by Means of the LPCon Program The free delivered LPCon program available on the www lumel com pl page is destined for the N24 and N25 meter series configuration The configuration user s manual for N24 and 25 meters by means of the LPCon program is also available on the www lumel com pl page The PD14 programmer is required for the configuration CAUTION The programming of meter parameters must be carried out when measuring circuits are switched off 1d 5 4 Manufacturer s Parameters of N24S and N25S Meters Tables Parameter description Range value Manufacturer s Manufacturer s B N24 N25 value N24S value N25S 0000 000 0 00 00 00 00 for U 000 00 for U I 0 000 00000 0000 0 unipolar unipolar 000 00 00 000 000
11. perature measurement by thermocouple of K type Basic error at manufacturer s settings Additional errors in rated operating conditions compensation of cold junction temperature changes compensation of wire resistance changes Output for the supply of external transducers Short duration overload 1 s 16 current flowing through the sensor lt 300 uA lt 5Q by wire for the automatic compensation lt 100 by wire for the manual compensation 50 C 1200 C 50 C 1370 C 0 2 of the range 1 digit 0 2 of the range 0 2 of the range 24 V 596 30 mA inputs of sensors 30 V 7 3 Technical Data of N24Z and N25Z meters Measuring range INPUTS Measuring range of voltage Un 1 100 120 V a c 2 5 250 300 V a c input resistance gt 2 4 400 600 V a c Measuring range of current In OT asc input resistance 10 MQ 10 0 05 5 6 A input resistance 2 10 Measurement of frequency 20 500 Hz in voltage range 24 480 V input resistance gt 2 Basic error at manufacturer s settings voltage and current 0 5 of the range 1 digit in frequency interval 20 500 Hz frequency 0 02 of the range 1 digit Sustained overload 15026 Un only for 400 V input 12096 Un for other Un 120 In Short duration overload 1 5 voltage input 2 Un 1000 V current input 10 In 7 4 Technical Data of N24H and N
12. ply External transducer supply option Fig 4 Electrical connection of the N24T N25T meters Thermocouple J K Resistance thermometer in a Resistance thermometer in a two wire system and with three wire system and with manual compensation automatic compensation Fig 5 Connections of the N24T and N25 T measuring inputs 4 2 3 Electrical Connections N24Z N24H and N25Z N25H Meters HEE L1 or N 100 V 250 V Configuration UU through PD14 supply 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 Configuration through PD14 PPly Fig 7 Electrical connections of N24Z N25Z and N24H N25H meters for the current measurement 9 5 SERVICE 5 1 Display Description Measured value 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 nE nes where is the appropriate execution of the 5 4 meter and next the program version in the shape x 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 N255 N25T N25H meters or acc to the table 2 for N24Z and N25Z meters t
13. s digit height 20 mm N24 14 mm N25 series colour red indication range 1999 9999 N24 series 19999 99999 N25 series Ensured protection grade from the frontal side IP 65 acc to EN 60529 Overall dimensions 96 x 48 x 64 mm with terminals Weight lt 0 25 kg Input power lt 6VA Galvanic isolation between supply measuring input 32 KV d C 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 e installation category III for the 400 V option category 11 AN pollution grade 2 maximal phase to earth working voltage for the supply circuit 300 V for the measuring input 600 V category 1 300 V cat 111 for the programming input 50 V altitude above sea level lt 2000 m 19 8 ORDER CODES Table 7 Number of display digits four N24 series five N25 series Kind of input signal standard voltage current temperature thermocouples resist thermometers signals d c signals high voltage high current Input see table 8 Supply e pro mcm 110 Ae m 2AN qr PEN 85 253 V a c d c with supply output 24 V 30 mA 20 40 V a c d c with supply output 24 V 30 mA Units see table 9 Version standard non standard settings custom made Language Polish Acceptance tests without extra q
14. t is J 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 A Caution risk of hazard Observations concerning the operational safety e 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 e The programming of N24 and N25 meter series parameters must be carried out after disconnecting measuring circuits e Before switching the meter on one must check the correctness of connections to the network e Do not connect the meter to the network through an autotransformer e Before removing the meter housing one must switch the supply off and disconnect measuring circuits e The removal of the meter housing during the guarantee contract period may cause its cancellation e The meter fulfills requirements related to electromagnetic compa tibility and can be used in the industrial electromagnetic environment e 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 met
15. uality inspection requirements with an extra quality inspection certificate acc to customer s request This output is only in N2XS and N2XT meters The code number is established by the manufacturer 20 Table 8 METER TYPE N245 N255 N24T N25T N24Z N25Z N24H N25H 0 20 mA PT100 50 150 C 100 V a c 100 V d c 4 20 mA PT100 50 400 250Va c 250 V d c Thermocouple J 0 60 mV 50 1200 C 400 V a c 400 V d c Item 1 2 3 4 frequency Thermocouple K 0 G N Codes of printed units Table 9 06 mA 14 Ma 1 After agreeing with the manufacturer 21 EXAMPLES OF ORDER Example 1 The code N24Z 21 04 00 E 0 means N24Z digital meter with four digits for a c signals input signal 250 V acc to the table 8 1 supply voltage 230 V a c 04 with the unit V acc to the table 9 00 standard version E English language 0 without extra quality inspection requirements Example 2 custom made version The code N25S 14 02 XX E 1 means 255 digital meter with 5 digits for d c signals 1 input signal 0 20 mA acc to the table 8 4 supply voltage 85 253 V a c with the 24 V 30 mA supply input for external transducers 02 with the unit 95 acc to the table 9 with display indications 0 100 0 XX custom made mentioned in the table 10 E English language 1
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