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N32O 

User's manual

4

•

Integrated mathematical functions - individual for each channel.

•

Two individual characteristics enabling the conversion of the main measuring value 
in a given channel according to the programmed characteristic. 

•

High contrast LCD display with built-in backlight.

•

Two-line display.

•

Possibility to select the unit of the measuring (displayed) value.

•

Possibility to simultaneously display two selected measuring quantities or a 
measuring quantity and e.g. a unit or time.

•

Programmable displayed precision with automatic setting of a decimal point.

•

Possibility to program the measuring range (narrowing) for the selected displayed 
value.

•

Additional measurement of minimum and maximum values during the moving 
window, with the possibility of programming one of these values to be displayed as 
the main one.

•

Programmable alarms with the functions of programmable delays of alarm 
activation and deactivation, triggered by a specific controlling value. Up to 4 relays, 
including up to 3 relays with a switching contact. Possibility to configure each of the 
alarms to work in a selected mode and to react to any measuring quantity including 
the current time.

•

Possibility to control the alarm outputs (relay) via the RS-485 interface.

•

Programmable standard analog outputs enabling the retransmission of a selected 
measuring quantity or a selected parameter. Freely programmable output type and 
conversion range.

•

Built-in by default RS-485 interface with MODBUS RTU protocol support.

•

Built-in real-time clock with a built-in automatic change of DST and inversely. The 
clock can be a parameter which controls the alarms and the value of the analog 
output signal.

•

Possibility to password protect the settings against unauthorized modification. 

•

Monitoring of set parameters.

•

averaging algorithm in a specified time using standard averaging (determining the 
number of measurements to be averaged) and averaging based on the moving 
window algorithm with a given averaging time.

•

Signaling of alarm operation by highlighting the number of the active alarm.

Содержание N32O

Страница 1: ...N32O User s manual 1 DIGITAL PANEL METER N32O SERVICE MANUAL ...

Страница 2: ...ent 32 5 4 1 6 Encoder only the main input 33 5 4 1 7 Pulse counter with pulse speed measurement main input only 35 5 4 1 8 Working time measurement 38 5 4 1 9 Time measurement 39 5 4 1 10 Additional counters I3 and I4 39 5 4 1 11 Averaging the measuring quantities 39 5 4 1 12 Minimum and maximum measuring values 40 5 4 1 13 Mathematical functions 40 5 4 1 14 Individual characteristic 41 5 4 2 Ana...

Страница 3: ... LCD display with backlight Thanks to the two line display it is possible to set the selected unit display simultaneously two measuring values the measuring value and the current time as well as a clear and user friendly menu with simultaneously visible the parameter name and its value Features of the N32 meter Wide range of configuration options for measuring pulse signals Possibility of simultan...

Страница 4: ...red by a specific controlling value Up to 4 relays including up to 3 relays with a switching contact Possibility to configure each of the alarms to work in a selected mode and to react to any measuring quantity including the current time Possibility to control the alarm outputs relay via the RS 485 interface Programmable standard analog outputs enabling the retransmission of a selected measuring q...

Страница 5: ...ew of the N32O meter is shown in Fig 1 2 Meter set The meter set includes Meter N32O 1 pc User s manual 1 pc Clamps to fix in the panel 4 pcs Seal 1 pc 3 Basic requirements operational safety In terms of a user safety the N32O meter meets the requirements of the EN61010 1 standard for the devices intended for use in facilities compliant with the third category of installations Comments concerning ...

Страница 6: ... in the panel The maximum thickness of the panel material cannot exceed 6 mm The meter should be mounted from the front of the panel with disconnected meter connection strips Before inserting the meter into the panel check the correct position of the meter seal and make sure that the edges of the panel are not sharp what could damage the seal After inserting the meter into the slot mount it with t...

Страница 7: ...he input circuits The view of the meter from the connectors side is shown in Fig 5 The upper terminal strip is optional and depends on the accessories of the meter The circuits of successive groups of the terminals are separated from each other as shown in Fig 4 Note Unused terminals of the terminal strips NC must not be connected to any signals Fig 3 Meter overall dimensions ...

Страница 8: ...suring inputs Binary Measuring inputs for connecting the measuring signals C common terminal of measuring signals The terminal should be connected to the power supply ground in the systems with PNP sensors In the systems with NPN sensors the terminal should be connected to the sensors supply terminal I1A and I1B main measuring input I2 additional measuring input I3 I4 control inputs inputs functio...

Страница 9: ... terminals 32 and 33 for the voltage output It is not possible to use the voltage and current outputs at the same time the correct value in accordance with the configuration will be available only for the selected output type 35 36 Binary output Open collector binary output for future applications The output should be left unconnected 8 14 29 NC Unused terminals Should be left unconnected The exam...

Страница 10: ...n about a detected error will be displayed see point 6 Error codes 5 1 Description of the frontal plate View of the front panel of the meter is shown in Fig 8 The LCD display with backlight and 4 buttons are on the front panel The description of the display fields is shown below The button functions are shown in the section 5 2 Designation Description L1 The upper main line of the display has 6 ch...

Страница 11: ...TOP from the input 1 or the input 2 B1 B4 Meter operation buttons The description of the button functions and their various combinations are shown in section 5 2 The lower line of the display can be configured to display the unit or a selected measuring value including time The available units and the corresponding MODBUS register 4025 values are shown in the table below Value in the register 4007...

Страница 12: ...f the menu Increasing the value of the selected parameter or increasing the value of a digit when changing the numerical value Pressing the button during a normal operation displays a maximum value for 2 seconds then the display returns to displaying a measuring value Confirm button Entering the programming mode holding down the button for at least 3 seconds Navigating the menu entering the parame...

Страница 13: ...ttons operation applies only to the inputs working in the counter mode All the events of deleting of saved minimum maximum values and alarm activation memory are indicated by the meter by displaying an appropriate message 5 3 Programming meter parameters Programming meter parameters is possible via the RS485 interface and by direct edition of the parameters using the buttons and the meter display ...

Страница 14: ...p The meter will automatically exit the programming mode and return to displaying the measuring value if no button is pressed for 30 seconds during programming The programming matrix is shown below Selection of measuring quantities input type Selection of a rescaling by constant method Constant rescaling the measuring value pulsing number per a single count revolution The value to or from which is...

Страница 15: ...n message is displayed Resolution position of the decimal point Function of a lower line of the display selection of a quantity displayed in the lower line Selection of quantity controlling the alarm state Selection of alarm type Alarm state change lower threshold Alarm state change upper threshold Alarm activation delay Alarm deactivation delay Active alarm memory Meter network address Transmissi...

Страница 16: ...lier of kilo mega or no multiplier Symbol of the multiplier value is shown on the left side of the display Entering an incorrect value of a given parameter causes that the new value is not accepted and the parameter will automatically have the previous value To change the parameters other than numerical select the appropriate setting from the parameter list using the buttons After selecting the ap...

Страница 17: ...kwise direction of the encoder rotation The counter counts down to 0 and then sets CAUtO value for the counterclockwise direction of the encoder rotation Default 999999 99999 999999 Minimum duration of a low level on meter input before it is considered as the low level Pulses with a shorter low level duration are ignored The value is expressed in microseconds for CntF mode And the setting is expre...

Страница 18: ...counter no 3 regardless of the function of the input The functions assigned to the input refer to the control of the inputs configured to work in the counter mode Default NONE NONE no function C1 SS C2 SS control of the main input counter modes An active signal at the input starts the counter and counting The counter is stopped at no signal at the input the pulses are not counted The counter opera...

Страница 19: ... characteristic Default 2 2 32 The first point of the individual characteristic the value measured directly or the value converted by the mathematical function Default 0 99999 999999 The first point of the individual characteristic expected value for the value X1 Default 0 99999 999999 Last possible point of the individual characteristic Default 31 99999 999999 Last possible point of the individua...

Страница 20: ...ult UNIt UNIt unit VAL 1 measuring value on the main input I1 without conversion and without averaging calculated only by CONSt parameter IND 1 measuring value on the main input converted by the mathematical functions individual characteristics and averaged Note Averaging is not active for the counter type measurement modes EXt 1 value additionally measured on the main input e g a frequency during...

Страница 21: ...ut conversion and without averaging calculated only by CONSt parameter EXt 2 value additionally measured on the additional input e g a frequency during the period measurement tIME current RTC time in hh mmss format Note The averaging period is defined by MAVG setting Alarm type see section 5 4 3 Default H oFF n on normally enabled n oFF normally disabled on enabled oFF disabled H on permanently en...

Страница 22: ...tting Input quantity controlling the analog output Default U IND 1 measuring value on the main input converted by the mathematical functions individual characteristics and without averaging using the moving window method Note Averaging is not active for the counter type measurement modes AVG 1 the same as IND 1 but averaged using the moving window method VAL 1 measuring value on the main input I1 ...

Страница 23: ... month Default not applicable 00 01 01 99 12 31 Automatic change of DST and inversely Default OFF OFF automatic time change disabled ON automatic time change enabled Password to access the meter configuration When the set value is different from zero each attempt to enter the menu of the meter will require entering a password In case of providing an incorrect password it will be possible to enter ...

Страница 24: ...are registered 3 Filtering is enabled if a given parameter tL or tH has been set for a value higher than 0 the setting is expressed in milliseconds 4 The measuring frequency is averaged using the moving window method in CNTFL measurement mode According to the table above it is possible to filter the input waveform for several modes Filtering the waveform is based on ignoring the occurring pulses w...

Страница 25: ...us during this period the given level is considered as correct In this case the change of the filtered signal happens each time the counter counts down to 0 and the pulse counting occurs when the filtered signal changes from inactive to active During the measurements the main measuring value in the main and the additional channels may be changed by a number of mathematical operations e g averaging...

Страница 26: ...rmediate measuring values such as values not converted by the individual characteristic or not averaged were also stored in MODBUS interface registers see Section 5 6 4 5 4 1 1 Fast changing pulses counter Counter main features Counting the pulses with a frequency of up to 20 kHz Meter triggering by the edge of the input signal Input waveform filtering for duration of a given level 50 s 64 bit bas...

Страница 27: ...he low input level inactive state before it is considered as the low level Low level filtering is active for tL setting higher than 50 tH minimum duration in microseconds of the high input level active state before it is considered as the high level High level filtering is active for tH setting higher than 50 bCtrL permission to control the counter using the meter keypad The control functions usin...

Страница 28: ...elect division or multiplication by the value defined by CONSt parameter CONSt defines the value by which the counted basic number of pulses will be multiplied or divided If CONSt value is less than zero the basic counting direction of the counter is set to down counting CAUTO for basic up counting direction CONSt 0 it defines the value up to which the counter will count For the down counting dire...

Страница 29: ...ounted pulses The user can select the type of operation or disable the function by selecting NONE setting CFtIM not applicable 5 4 1 3 Period measurement Measurement main features Wide range of period measurement from 50 s to 60 s with the possibility of limiting the measurement time High measurement resolution Programmable measurement time gating Automatic change of the measurement method dependi...

Страница 30: ...veform expressed as a multiple of 100 milliseconds This setting also defines the maximum duration of the measurements thus defining the maximum period of the measuring input signal It is recommended that the value of this setting should be about twice the maximum period of the measuring signal The meter will display the upper range limit symbol if during the time set by this setting a full period ...

Страница 31: ...f the input signal Possibility to select division or multiplication by the value defined by CONSt parameter CONSt defines the value by which the value of the measured period will be multiplied or divided This setting enables a quick change of the basic unit of the measuring frequency e g from Hz to kHz the value is divided by 1000 CAUTO not applicable tL minimum duration in microseconds of the low...

Страница 32: ...limiting the measurement time lower value of speed Automatic conversion of the measuring signal into speed expressed in revolutions per minute High measurement resolution Programmable measurement time gating Automatic change of the measurement method depending on the frequency of the input signal counting the internal pulses within the input signal period or counting the number of the external pul...

Страница 33: ...a multiple of 100 milliseconds This setting also determines the maximum time of the measurements and defines the minimum speed frequency of the measuring input signal It is recommended that the value of this setting should be about twice the maximum period of the measuring signal The meter will display the value 0 if during the time set by this setting a full period of the measuring signal is not ...

Страница 34: ...ant when determining the value of the multiplier or the divisor that the encoder counter is a 32 bit counter and setting the division value reduces the maximum number of counted pulses by a multiple of CONSt value For example dividing by 1000 will set the counter to actually count 1000 times more pulses so the maximum value it can count to will be 1000 times less CAUTO defines the maximum value of...

Страница 35: ...y to another time unit Unidirectional counter for counting up Averaging the measured frequency using the moving window method with registering the minimum and maximum value in a given averaging time Possibility to control the counter using the meter keypad binary inputs or via the RS 485 interface Wide range of frequency measurement from 0 02 Hz do 20 000 Hz with the possibility of limiting the me...

Страница 36: ...llowing operations can be done using the keypad start stop counting counter reset SAVG measurement period gating of the input waveform expressed as a multiple of 100 milliseconds This setting also defines the maximum duration of the measurements thus defining the minimum frequency of the measuring input signal It is recommended that the value of this setting should be about twice the maximum perio...

Страница 37: ... with a flow meter that generates 100 pulses per m3 of water The upper line of the display should indicate a flow counter value and in the lower line should display the flow rate in m3 h The N32O meter should be configured according to the following parameters ItYPE input type set to CntFL mode SCAL operation type set to DIV CONSt rescaling constant set to 100 000 CAUTO counter upper value set to ...

Страница 38: ... of the minimum and maximum value in a configurable time window Automatically ignored mathematical functions Automatically ignored individual characteristics Configuration parameters SCAL not applicable CONSt The value only defines the counting direction The working time counter counts up for the values greater than zero and counts down for the values less than zero The signal on the input control...

Страница 39: ...and the counters control are available via the RS 485 interface The counters input signals are filtered by the programmable filters the parameters tL3 tH3 tL4 and tH4 Counters main features 64 bit counters Unidirectional counters Maximum input frequency 500 Hz Input scanning speed 1 ms Possibility to control the counters start stop reset only via the RS 485 interface 5 4 1 11 Averaging the measuri...

Страница 40: ...available via the interface and from the panel of the meter Press the button to display the minimum value Press the button to display the maximum value The minimum maximum value is displayed for 2 seconds then the meter automatically returns to displaying the measuring value Reset of the minimum maximum value can be done via the interface or directly using the meter keypad Press a combination of b...

Страница 41: ...of the characteristic Parameters of the individual characteristic parameters are available from the menu level and via the interface Programming client specific characteristic requires to define the number of points and then determining their values Defining points of the individual characteristic requires to determine the points of the characteristic by providing the X and Y values of each point ...

Страница 42: ...able 9 5 4 2 Analog output The N32O meters can have one analog output depends on the ordering code connected to the meter terminals as a voltage output 0 10 V output and as a current output 0 20 mA or 4 20 mA The analog output is galvanically separated from the other meter circuits Selection of the output type to be used can be done during the output configuration It is not possible to use the vol...

Страница 43: ... five parameters An example of an output configuration is shown below Let s assume that the input signal will be the frequency and the measuring range will be 500 Hz and for this range the output should change in the range of 4 20 mA The settings for such case should be as follows AtYPE 4 20MA InPV IND 1 AnLo 0 AnHi 500 AnMAN 22 The value on the analog output will be 22 mA in case of a measurement...

Страница 44: ...es the alarm state change upper threshold Note It is important to keep in mind when configuring the alarms that the entered threshold values should match the dependency AL_L AL_P Otherwise the dependency will disable the alarms Additionally the alarm functions include the programmable delays of alarm activation and deactivation The user can define how long the alarm event must last before the alar...

Страница 45: ...n The terminals A B and GNDI terminals which location is shown in Fig 5 allow to connect the RS 485 interface to the N32O meter It is required to connect the lines A and B in parallel with their equivalents in other devices to obtain the correct transmission The connection should be made using twisted pair screened cable in such a way that the A and B lines should be one pair and are connected wit...

Страница 46: ...ate The same type of transmission mode single data frame format The N32O meters enable programming the following parameters of the RS 485 link Meter address 1 247 Baud rate 2400 4800 9600 14400 19200 28800 38400 57600 115200 b s Operation mode RTU frame format 8n1 8n2 8o1 8e1 Maximum response time 50 ms 5 5 3 Implemented functions of MODBUS protocol The following functions of the MODBUS protocol h...

Страница 47: ...e registers configuration registers 4200 4257 16 bits Readout only registers with system parameter values 7500 7521 32 bits float Readout only registers with measuring and calculated values 7600 7744 32 bits float Readout and write registers registers with configuration data 7000 7043 16 bits Readout only registers Registers store the same data as the registers 7500 7519 where one value is stored ...

Страница 48: ...e of the reciprocal of the measuring quantity 5 Square root of the reciprocal of the measuring quantity 4006 1 600 10 Single measurement time on the main input gating time The value is the multiplicity of 100 ms period SAVG parameter 4007 1 3600 1 Number of single measurements averaged using the moving window method main input 4008 0 2 Defines the period for pulse speed conversion in CNTFL measure...

Страница 49: ...No function 1 Enable Disable the counter of the main input The counter is enabled if the input is active control by level 2 Enable the counter of the main input The counter is enabled if the input changes from inactive to active control by edge 3 Disable the counter of the main input The counter is disabled if the input changes from inactive to active control by edge 4 Reset the counter of the mai...

Страница 50: ...value averaged using the moving window method and converted based on the selected mathematical function and the individual characteristics 2 Value additionally measured during the measurement of the main value selected according to the configuration of the main input type e g a frequency in the period measurement 3 Minimum value of the measuring quantity averaged and converted using the mathematic...

Страница 51: ...d to provide a code each time when entering the meter menu in case of entering a value higher than zero 4028 0 1 0 Enable the individual characteristic for the main input Value Description 0 Individual characteristic disabled 1 Individual characteristic enabled 4029 2 32 2 Number of points of main input individual characteristic 4030 0 1 0 Enable the individual characteristic for the additional in...

Страница 52: ... RS 485 4034 1 247 1 RS 485 MODBUS network meter address 4035 0 3 0 RS 485 data transmission frame type format Value Frame type 0 8N1 1 8N2 2 8O1 3 8E1 4036 0 8 2 RS 485 baud rate Value Baud rate b s 0 2400 1 4800 2 9600 3 14400 4 19200 5 28800 6 38400 7 57600 8 115200 4037 0 1 0 RS 485 Apply entered settings Entering the value 1 changes immediately the settings and resets the register If the RS 4...

Страница 53: ...0 Alarm activation memory Entering the value 1 activates the alarm event memory function Clock setting only The registers store data of last entered time and date 4058 0 99 19 Real time clock year value to set the current year 4059 1 12 8 Real time clock month value to set the current month 4060 1 31 1 Real time clock day value to set the current day 4061 0 23 12 Real time clock hours value to set...

Страница 54: ...ponding to reset of a different value Bit Description 0 Reset minimum value on the main input 1 Reset maximum value on the main input 2 Reset minimum value on the additional input 3 Reset maximum value on the additional input 4075 0 3 0 Control of the main input counter entering the appropriate command will execute it and reset the value in the register Value Description 0 Do nothing 1 Start the c...

Страница 55: ...istered Counters 64 bit content of the successive counters 4220 The registers store 64 bit content of the main input counter corresponding to the counted number of pulses time units without the mathematical conversion the register 4220 stores the highest 16 bits of the word and the register 4223 stores the lowest 16 bits of the word 4221 4222 4223 4224 The registers store 64 bit content of the add...

Страница 56: ...riables or in the second column for the values stored in two 16 bit registers where the value stored in two registers is of float type Address 32 bit float registers Address value in 2 16 bit register s Description 7500 7000 Device ID 7501 7002 Measuring value on the main input without the mathematical functions averaging using the moving window method and without the individual characteristic 750...

Страница 57: ...attery 7520 7040 CPU temperature 7521 7042 Current time in the form of hh mmss 5 5 4 4 Registers 7600 7744 and 7200 7489 The 32 bit and the corresponding 16 bit registers with the configuration parameters Address 32 bit float registers Address value in 2 16 bit registers Permissible values Default Description Minimum and maximum displayed value 7600 7200 99999 999999 99999 Display narrowing lower ...

Страница 58: ...nput individual characteristic Xn value of the measuring quantity for which Yn value will be displayed on the display Yn displayed value for the measuring value Xn where n point number 7617 7234 99999 999999 0 X1 7618 7236 99999 999999 0 Y1 7619 7238 99999 999999 1 X2 7620 7240 99999 999999 1 Y2 7621 7242 99999 999999 2 X3 7622 7244 99999 999999 2 Y3 7623 7246 99999 999999 3 X4 7624 7248 99999 999...

Страница 59: ...7666 7332 99999 999999 24 Y25 7667 7334 99999 999999 25 X26 7668 7336 99999 999999 25 Y26 7669 7338 99999 999999 26 X27 7670 7340 99999 999999 26 Y27 7671 7342 99999 999999 27 X28 7672 7344 99999 999999 27 Y28 7673 7346 99999 999999 28 X29 7674 7348 99999 999999 28 Y29 7675 7350 99999 999999 29 X30 7676 7352 99999 999999 29 Y30 7677 7354 99999 999999 30 X31 7678 7356 99999 999999 30 Y31 7679 7358 ...

Страница 60: ...410 99999 999999 12 X13 7706 7412 99999 999999 12 Y13 7707 7414 99999 999999 13 X14 7708 7416 99999 999999 13 Y14 7709 7418 99999 999999 14 X15 7710 7420 99999 999999 14 Y15 7711 7422 99999 999999 15 X16 7712 7424 99999 999999 15 Y16 7713 7426 99999 999999 16 X17 7714 7428 99999 999999 16 Y17 7715 7430 99999 999999 17 X18 7716 7432 99999 999999 17 Y18 7717 7434 99999 999999 18 X19 7718 7436 99999 ...

Страница 61: ...26 X27 7734 7468 99999 999999 26 Y27 7735 7470 99999 999999 27 X28 7736 7472 99999 999999 27 Y28 7737 7474 99999 999999 28 X29 7738 7476 99999 999999 28 Y29 7739 7478 99999 999999 29 X30 7740 7480 99999 999999 29 Y30 7741 7482 99999 999999 30 X31 7742 7484 99999 999999 30 Y31 7743 7486 99999 999999 31 X32 7744 7488 99999 999999 31 Y32 ...

Страница 62: ...play Lower the display resolution or select the mode of automatic position of the decimal point Lost calibration Please contact the technical support Lost real time clock settings The message is displayed only when turning the meter on Time and date must be set If the message still appears when turning the meter on after setting the time and date please contact the Service Department because a bac...

Страница 63: ...600 s 1 0 0012 Frequency 0 017 20 000 Hz 1 0 0012 Rotation speed 0 0012 Working time counter Timer 0 5 second a day Current time 0 5 second a day 1 The maximum measurement time signal period duration for frequency and period measurement is defined by SAVG setting which also narrows the measuring range 2 The measurement error is defined as a percentage of the displayed value but not less than the e...

Страница 64: ...ected to the inputs I3 and I4 500 Hz Additional measurement errors Due to ambient temperature change 50 of class 10 K RS485 interface Galvanic separation From all other signal connections Protocol MODBUS RTU Supported protocol functions 3 4 6 16 17 Data frame type 8N1 8N2 8O1 8E1 Baud rate b s 2400 4800 9600 14400 19200 28800 38400 57600 115200 Alarm outputs NO relay 5 A 250 V AC 5 A 30 V DC liste...

Страница 65: ...24 mA Intrinsic error 0 1 of range Error due to temperature change 50 of intrinsic error value 10 K Rated operating conditions Supply voltage depends on the version 85 253 V AC 40 400 Hz 90 300 V DC or 20 40 V AC 40 400 Hz 20 60 V DC Power Consumption 6 VA Working temperature 25 23 55 ºC Storage temperature 30 70 ºC Humidity 95 no condensation Working position any Preheating time 15 minutes Protec...

Страница 66: ...4 Safety requirements acc to EN 61010 1 Circuit to circuit insulation basic Installation category III Pollution grade 2 Maximum phase to earth operating voltage 50 V for the measurement circuits 300 V for the circuits supply alarm 50 V for the circuits auxiliary supply RS 485 interface analog output Altitude a s l 2000 m ...

Страница 67: ...face 1 relay output RS 485 1 4 relay outputs RS 485 2 4 relay outputs RS 485 1 analog output 3 Version standard 0000000 custom made XXXXXXX Language version Polish English M Acceptance tests without extra requirements 0 with quality inspection certificate 1 with calibration certificate 2 acc to customer s request X only after agreeing with a manufacturer ...

Страница 68: ...l 68 45 75 100 www lumel com pl Technical support tel 48 68 45 75 143 45 75 141 45 75 144 45 75 140 e mail export lumel com pl Export department tel 48 68 45 75 130 45 75 131 45 75 132 e mail export lumel com pl Calibration Attestation e mail laboratorium lumel com pl N32O 09 ...

Страница 69: ...N32O User s manual 69 ...

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