CMR35 Manual FINAL4_020911:awb - General Tools And Instruments
Contents
1. 16 21 Reading Holding Storing and Recalling Data 16 18 Setting Alarms and 18 19 Setting the cece cece sees eee eee eee 20 Setting the Receiver s Transmission Span and ID Code Channel 20 21 Data Logging with a 22 29 Installing the Software and a USB 22 23 Verifying the 1 1 23 Using the 0 24 29 Specificaliolis creer teen tet oe chinh nea ek ee RID 30 32 FCC Radio Frequency Interference Compliance Disclosure 33 Operation and Maintenance 34 Optional 50 34 Warranty 34 Return for Repair 35 2 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 INTRODUCTION Thank you for purchasing General Tools amp Instruments CMR35 Series Wireless Data Logging Clamp Multimeter System Please read this user s manual carefully and thoroughly before using the instrument There are two CMR35 systems The CMR32. start of transmission Serial Number 01 Place 129 13 Min Minimum value since Received Channels start of transmission Number of connected transmitters Real time measurement from transmitter To change entries or descriptions use Setup menu The Graph window OFFICE_01 Return to home page To next page 4 The Electric Power Cost Monitor window f Electric Power Cost Monitor Ch4 Serial Number PF Unit Price Time d h m s Electricity charges o M M Display of this window can be enabled using the View menu or the toolbar below the main menu However the Electric Power Cost Monitor window will display only if the three parameters in the bottom row V P F Power Factor and Unit Price have been entered using the Setup menu If you do not know the P F of the machine whose power consumption you wish to track assume it is 1 0 and enter that value If you know the machine s P F enter it 0 8 is the value shown in the screen shot above 26 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 27 If you know the line voltage of your system enter it in the V window at left 110V is shown If you are not sure of the line voltage measure it by inserting the transmitter s black and red probes in a power outlet Read the value and enter it in the V window at left To use the Electric Power Cost Monitor window the CMR35 system s transmitter s must be opera
3. on the display replace the batteries of both units immediately To change the batteries of the transmitter loosen and remove the single Phillips head screw holding the battery compartment cover in place on the back of the unit Do not remove either of the Phillips head screws above and below this screw doing so would compromise the structural integrity of the unit and void the manufacturer s warranty To change the batteries of the receiver loosen and remove both Phillips head screws holding the battery compartment cover in place on the back of the unit In both cases make sure to install the two fresh AA batteries in the correct polarity orientation as indicated by the stenciling underneath them To extend battery life switch off the transmitter and receiver when finished making measure ments To avoid leakage of battery acid that could cause damage remove the batteries from both units whenever the multimeter will not be used for an extended period of time several months If either the transmitter or receiver needs cleaning use a soft dry cloth Never use organic solvents to clean the housing or display OPTIONAL ACCESSORIES The only accessory for the CMR35 avaliable from General is an AC line splitter General p n ACL10 WARRANTY INFORMATION General Tools amp Instruments General s CMR35 Wireless Data logging Clamp Multimeter System is warranted to the original purchaser to be free from defects in material and work
4. or Uu tuu Lo setpoint B Press button 2 Choose or symbol gt ie Lo Press A button n inn to choose or u luu symbol B Press gt button 3 Set alarm setpoint press A button x and use button to set value a Press button 20 Move position of decimal point i Lo oe Ifl Press A button I CU LI tomove position of decimal point V Press button 5 Select unit in Lo Press A button 1 ALILI to select V A or aj mV unit 00 33 Press ALARM button or wait 10 seconds to save ALARM nn setpoint setting Then return to receiving mode to acquire A measurement data from transmitter a CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 0 Page 20 SETTING THE CLOCK Press the button to enter clock setting mode You must then press the A or gt button within two seconds or the first screen below will disappear To set the clock Press button and then press A or gt button immediately to cause left digit to blink i 0 33 l Use A or gt button to set clock Press button or wait 10 seconds to complete clock setting Then exit clock setting mode SETTING THE RECEIVER S TRANSMISSION SPAN AND ID CODE CHANNEL These parameters of the receiver are set in the same way that they were set for the transmitter Follow the instructions embedded in the next two figures Transmission span setting Press SEARCH button and
5. reading This feature comes in handy when making measurements under low light conditions or in tight spaces under counters in crawl spaces or attics or inside electrical panels where the display is out of sight In these cases press the HOLD button to freeze the reading causing the letters D H to appear on the top line of the display Then move the transmitter to where its display can be read more easily To release the held reading press the HOLD button again MEASURING CURRENT To measure the AC current flow through a conductor move the function switch to the A position squeeze the clamp trigger to open the clamp and place one conductor only in the center of the clamp s jaws as shown in the following figure Read the value once it stabilizes It is good practice to measure the O current carried by the hot line BLACK OR usually a black or red wire RED HOT Measurements of current through WIRE the return or neutral conductor usually a white wire may be misleading because the return may be used by other circuits To measure the current drawn by an appliance with a fixed power cord General recommends using an industry standard AC line splitter as shown in the following figure To purchase an AC line splitter from General see p 31 In AC current measurement mode the CMR35T selects a 0 to 400A measurement range unless the input is greater than 400A In this case the unit automatically switches
6. the integrity of a diode move the function switch to the Q JF position Press the REL SEL button until the symbol appears in the top row of the display as shown in Fig 2 Plug the rubber covered end of the black probe into the COM jack of the transmitter and the rubber covered end of the red probe into the jack The CMR35T supports both forward bias and reverse bias diode testing To perform a forward bias test first make sure that the diode you are measuring is not carrying any current Then touch the tip of the red probe to the diode s anode lead and the tip of the black probe to the diode s cathode lead as shown in part A of the figure on page 10 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 10 A good silicon diode should produce a reading of 0 5 to 0 7V A good GE diode should produce a reading of 0 2 to 0 3V If the reading is close to 0 the diode is short circuited If the display reads OL the diode is open circuited To perform a reverse bias test touch the tip of the red probe to the diode s cathode lead and the tip of the black probe to the diode s anode lead as shown in part B of the figure above If the diode is good the display will read OL If it is bad the display will show a voltage level When you have finished using the clamp meter for diode testing move the function switch to the OFF position To check the continuity of a circuit between two poin
7. viewed and saved on the computer as tabular or graphical data The CMR35 system is powered by four AA batteries two each for the transmitter and receiver SAFETY PRECAUTIONS Z WARNING To prevent electrical shock fire or damage to the multimeter Never attempt to measure voltages above 600 Volts or currents above 600 Amperes e Make sure the transmitter s function switch is in the correct position for the parameter to be measured e Check that the transmitter s probes fit snugly in their jacks whenever using them to make measurements e Keep your hands under the guard ring see Fig 1 when using the clamp Before switching functions remove the probes from the circuit under test and remove conductors from the jaws of the clamp e Before conducting resistance tests make sure the power to the circuit under test has been switched off Never use the multimeter in the rain or snow or with wet hands Do not use the transmitter if its case or probes have been cracked or damaged CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 8 4 KEY FEATURES Measures AC and DC voltages AC and DC currents resistances and frequency of AC voltages and currents e AC and DC voltage and current measurements are true RMS readings e Includes software and USB cable that connect receiver to a PC enabling measurements from up to six transmitters to be displayed logged stored on an SD card and viewed in
8. 0013 212 431 6100 Remember to include a copy of your proof of purchase your return address and your phone number and or e mail address 35 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 36 Specialty Tools amp Instruments GENERAL TOOLS amp INSTRUMENTS 80 White Street New York NY 10013 3567 PHONE 212 431 6100 FAX 212 431 6499 TOLL FREE 800 697 8665 e mail sales generaltools com www generaltools com CMR35 Series User s Manual Specifications subject to change without notice 2011 GENERAL TOOLS amp INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN tCMR35 2 9 11
9. 5 system operates at 910MHz and the CMR35A system operates at 912 4MHz The basic CMR35 system consists of one CMR35T clamp meter transmitter one CMR35R data logging receiver operating at the same frequency a USB cable and an installation CD containing data logging software and a set of USB drivers Up to six transmitters on different channels can be interfaced to one receiver operating at the same frequency The system is designed for use by industrial maintenance repair and operations MRO professionals Used alone or with the receiver the multimeter s clamp type transmitter can measure AC or DC voltages up to 600 Volts AC or DC currents up to 600 Amperes electrical resistances up to 4MQ and the frequency of AC voltages and currents up to 100 kHz Autoranging is automatic for all measurements The transmitter can also verify the integrity of diodes and perform yes no checks of continuity between any two points of a circuit When a transmitter and receiver are wirelessly connected at a maximum distance of 328 ft 100m with no obstructions in between measurements made by the transmitter can be displayed remotely and in real time on the receiver s display Measurements also can be time stamped by the included data logging software and transferred from the receiver to a Windows computer via a USB cable As the computer stores the measurements they can be viewed in the software s Monitor window in real time Measurement logs also can be
10. CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 1 WIRELESS MULTI NODE DATA LOGGING TRUE RMS CLAMP MULTIMETER SYSTEM USER S MANUAL Receiver CMR35 SERIES CMR35 910MHz CMR35A 912 4MHz Please read this manual carefully and thoroughly before using this product CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 2 TABLE OF CONTENTS Introduction EE EDD Eh CURE Yep EX CE 3 Safety adaa Die nnn nnns 3 Koy Feat f85 i wea Cx aea 4 What sin the Gase eee serie te rnit hmm ER e mx e s n 4 Product Overview emer oa e nx Cx e en 5 6 Operating InstructionS ccccc cece 7 29 Making Basic Measurements with the 7 Measuring Current 0cc cece eee eee n HH nnn 7 8 Measuring 8 9 Measuring Resistance 9 Testing Diodes and Checking 9 10 Measuring 10 11 Making Relative Measurements 11 Using the Receiver with the 12 Setting the Transmitter s Transmission Span and ID Code Channel 12 15 Operating the
11. Excel on a Windows computer e Software also can calculate electricity power charges for up to six loads single phase or 3 phase motors heaters or other heavy loads Autoranging e Supports setting of Hi and Lo alarm setpoints e Tests diodes and performs continuity checks e Wireless receiver works at up to 333 ft 100m with no objects between it and transmitter e Stores and recalls minimum and maximum readings WHAT S IN THE CASE The two main components of the CMR35 Series system the clamp meter transmitter CMR35T transmitter and the data logging receiver CMR35R receiver come in protective hard carrying case along with a pair of probes four AA batteries two each for the transmitter and receiver a USB cable an installation CD containing Excel compatible data logging software and a USB driver and this user s manual FESH pox iL 8 a TIO a MF KO CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 5 PRODUCT OVERVIEW Before using the transmitter and receiver together learn how to make some basic measurements using the transmitter unit alone To begin familiarize yourself with Figures 1 and 2 Fig 1 shows the transmitter unit s controls indicators and jacks Fig 2 shows the symbols used by the transmitter s liquid crystal display as well as their positions CAT III 600V REL SEL TXON FUNCTION SET Clamp 2 Clamp tips opening Guard ring Cla
12. X MIN Lit when reading memorized maximum or minimum value HOLD Lit when measurement is held Lit when USB connection to PC is enabled fig Lit in alarm mode When blinking indicates measured value exceeds alarm setpoint TS Indicates displayed value is transmission span When multiple transmitters are used with one receiver indicates that all transmitters are operating Hz Lit in frequency measurement mode MQ kQ Q Lit in resistance measurement mode mV V Lit in voltage measurement mode A Lit in current measurement mode Fig 4 Symbols used on the receiver s liquid crystal display CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 16 OPERATING THE RECEIVER To power on press the button To power off press the button and hold it for at least three seconds READING HOLDING STORING AND RECALLING DATA To use the button to recall stored maximum or minimum values follow the instructions embedded in the next two figures To call up a display without stored MAX MIN data Receiver will return to measuring mode in 10 seconds if READ button is not pressed f MEMO READ eae e e o MAX E f MEMO READ 1 e o o B A u To call up a display with stored MAX MIN data Receiver will return to measuring mode in 10 seconds if READ button is not pressed MEMO READ augu 5 LI A MAX a 1 MEMO READ Af Press READ
13. an 600VAC As in current measurement mode the CMR35T automatically chooses the narrowest measurement range that includes the tested value The four available full scale ranges are 0 to 4V 0 to 40V 0 to 400V and 0 to 600V Read the measured value once it stabilizes When you have finished making measure ments move the function switch to the OFF position MEASURING RESISTANCE To measure the resistance between two points of an electrical or electronic circuit first make sure that the circuit you are measuring is not carrying any current Then move the function switch to the Q position The display should then read 0 1 with the symbol MQ at the upper right Plug the rubber covered end of the black probe into the COM jack of the transmitter and the rubber covered end of the red probe into the jack Then touch the metal ends of the black and red probes to the points between which you wish to measure the resistance To avoid affecting the measurement make sure not to touch the metal tip of either probe The CMR35T automatically chooses the narrowest measurement range that includes the tested resistance value The six available full scale ranges are 0 to 4000 0 to 4kQ2 0 to 40kQ 0 to 400k 0 to 4MQ and 0 to 40MQ Read the measured value once it stabilizes When you have finished making resistance measurements move the function switch to the OFF position TESTING DIODES AND CHECKING CONTINUITY To test
14. button MAX symbol appears but stored MAX data does not Press READ button MIN symbol appears but stored MIN data does not i Press READ button once again or wait 10 seconds to return to measuring mode Press READ button to display stored MAX data Press READ button again to display stored MIN data Press READ button once again or wait 10 seconds to return to measuring mode CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 17 To use the button to hold the current reading 0045 nn UU HOLD a 00 nn uu Ua Press button to lock reading Press button again to unlock reading and return to measuring mode To enter MAX HOLD mode and recall MAX measurements ie MAX 0045 i n UL a Press HOLD MAX H button and hold for two seconds to enter MAX HOLD mode Press button again to exit MAX HOLD mode and return to measuring mode To use the button to store maximum and minimum values follow the instructions embedded in the next figure Receiver will return to stored MAX MIN mode in 10 seconds if READ button is not pressed 2 635 X n 0 Li A MAX MIN EB mu mm 0030 n Li I 0031 nn MIN E i 631 Li A E Press MAX MIN button to enter MAX MIN stored data mode i Press READ button to display stored MAX data d Press READ button again to
15. d probes to the points whose potential difference you wish to measure A WARNING A To avoid exposing yourself to a harmful or fatal voltage and damaging the transmitter make sure that the potential you are attempting to measure is less than 600VDC As in current measurement mode the CMR35T automatically chooses the narrowest measurement range that includes the tested value The five available full scale ranges 0 to 400mV 0 to 4V 0 to 40V 0 400V and 0 to 600V Read the measured value once it stabilizes If the symbol appears to the left of the value the measured voltage is negative When you have finished making measurements move the function switch to the OFF position To measure the AC voltage between two points in a circuit move the function switch to the M position Press the REL SEL button callout 7 8 of Fig 1 until v symbol appears at the left of the display Plug the rubber covered end of the black probe into the COM jack of the transmitter callout 13 of Fig 1 and the rubber covered end of the red probe into the transmitter s jack callout 14 Then touch the metal ends of the black and red probes to the points whose potential difference you wish to measure CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 9 A WARNING A To avoid exposing yourself to a harmful or a fatal voltage and damaging the transmitter make sure that the potential you are attempting to measure is less th
16. description of Channels 1 to 6 Ch5 Channel 6 Default Ch 24 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 25 The Edit menu CMR35 Wireless clamp meter TE View Record Option Window Help Clear record f The View menu 4 Electric Power Cost Monitor D Table When checked Table window tabular measurement data is displayed Monitor When checked Monitor window dashboard is displayed Graph When checked Graph window graphical measurement data is displayed When checked Electric Power Cost Monitor window is displayed The four options above also are available from the toolbar below the main menu as shown below CMR35 Wireless clamp meter File Setup Edit View Record Option Window Help The Table window E Table Time 0033 13 26 55 0034 13 26 57 0035 13 26 59 0036 13 27 00 0037 13 27 02 0038 13 27 03 Ch2 Unit Time 0039 13 27 05 0040 1327 07 0041 13 27 08 132710 132712 132713 S H CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 26 2 The Monitor window Transmission sampling time Monitor Mm Hi alarm setpoint T Cwrrent Setting Prospective saved file pterval time 00 i E Avg Average value since name start of transmission Transmitter measurement Received Channels Max Maximum value since mode Main Display 1_Chi
17. display stored MIN data Press MAX MIN button to exit MAX MIN stored data and return to measuring mode 17 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 18 To use the secondary function of the button to move the position of the blinking digit when setting the clock and alarm refer to the figure below 1i 00 33 N Tinn U IUU B Clock setting Alarm function setting When the digit is blinking press the key to move to the next digit SETTING ALARMS AND SETPOINTS To use the button follow the instructions embedded in the following sets of figures To set the alarm Press ALARM button to enter alarm function mode fig ee When appears alarm function is active When data measured by transmitter exceeds alarm setpoint alarm will sound for 2 seconds To mute alarm press the SEARCH button which has the words MUTE ALARM stenciled below it To exit alarm function mode press ALARM button 18 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 19 To set an alarm setpoint Ts 00 33 iy nn Press ALARM button to enter alarm function mode UU is Press SEARCH button T f ann Enter setpoint setting mode Receiver will return to measuring U LI LI mode if A button is not pressed when disappears i Press gt button D Choose Hi or Lo setpoint P Press A button n inn to choose Hi
18. f reading 5 digits Continuity Check Resolution Accuracy input voltage 4002 0 12 Alarm sounds for resistance 600V lt 100Q Diode Test f Maximum Range Resolution Accuracy Remarks input voltage 1 000V 0 001V 10 of reading circuit 600V 5 digits voltage is 1 5V Frequency Measurement 0 00192 0 0192 0 1Hz 0 7 of reading __ 5 digits Accuracy stated 600V 0 001kHz for sine wave 50kHz 0 01kHz 100kHz 0 1kHz For measurements below 64 F 18 C or above 82 F 28 C decrease stated accuracy by an additional 10 per 1 C change 31 CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 0 Page 32 GENERAL SPECIFICATIONS Distance between transmitter and receiver 333 ft 100m maximum less with obstacles in path and when either unit is inside metallic structure Transmission frequency 910MHz CMR35 or 912 4MHz CMR35A Sampling rate Three times second with no transmission once sec with transmission Number of data logs Unlimited storable Operating temperature 14 to 122 F 10 to 50 C at less than 80 relative humidity humidity noncondensing Storage temperature 4 to 140 F 20 to 60 C at less than 70 R H humidity noncondensing Power supply Two AA Alkaline batteries each for transmitter and receiver Alternatively receiver only via 3 V AC DC supply at 10 mA through 3 5mm stereo mini plu
19. g Transmitter Receiver Without transmission Battery life 300 hours With transmission With transmission span span of 2 seconds of 2 seconds 100 hours 100 hours LCD size 2 05 H x 1 14 W in 1 77 W x 1 04 H in 52 x 29mm 45 x 26 5mm Dimensions 8 66 L x 2 52 W 7 05 L x 2 83 W x 1 38 H in x 1 26 H in 220 x 64 x 35mm 179 x72 x32mm Maximum clamp opening 0 39 x 1 38 in 10 5 Weight 8 85 oz 2510 6 24 oz 1779 excluding batteries excluding batteries 32 CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 0 Page 33 FCC RADIO FREQUENCY INTERFERENCE COMPLIANCE DISCLOSURE This device complies with Part 15 of U S Federal Communications Commission FCC rules governing radio frequency devices Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Notice Any changes or modifications not expressly approved by the supplier responsible for compliance could void the user s authority to operate the equipment Important notice To comply with the FCC RF exposure requirements no change to the antenna or the device is permitted Any change to the antenna or the device could result in the device exceeding the RF exposure requirements and void the user s authority to operate the device The equipment has been tested and found to comply
20. he Wireless Clamp Meter Choose Program Group Make sure that Wireless clamp meter is highlighted both in the Program Group window above and in the Existing Groups window below Then click Continue to begin the installation 9 After the installation finishes a dialog box will advise that Wireless clamp meter Setup was completed successfully Click OK 22 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 23 10 The CMR35 Flash Player 9 screen will reappear on your desktop Left click the USB Installation button 11 The next screen will be a File Download Security Warning Respond to the question Do you want to run or save this file the 20 0KB InstallUSB exe file by clicking Run 12 The next screen will be a Windows User Account Control dialog box Respond to the question Do you want to allow the following program from an unknown publisher to make changes to your computer by clicking Yes The installation program will then automatically install the correct USB driver for your computer s operating system VERIFYING THE INSTALLATION To verify that the Wireless Clamp Meter software and USB driver installed correctly 1 Insert the mini plug end of the included USB cable into the USB jack on the right side of the receiver Then insert the larger plug on the other end of the cable into a USB port on your computer 2 Power on the transmitter and receiver 3 Make sure that the jaws of the transmitter clamp are clo
21. hold for two seconds to enter ID code selection mode ts Press SEARCH button again to enter transmission span selection mode Press HOLD MAX H button as many times as needed to select transmission span of 2 10 30 60 or 120 seconds Press SEARCH button and hold for two seconds to save setting and return receiver to measuring mode 20 CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 0 Page 21 ID code Channel setting ID code Channel from 1106 i Press SEARCH button and hold for two seconds to enter ID code selection mode Press CLOCK SET button to switch selected ID Code Channel on or off J Press CHANNEL button to switch to different ID code Channel Press HOLD MAX H button to switch selected ID code Channel on or off i Press SEARCH button and hold for two seconds to save setting and return receiver unit to measuring mode 21 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 22 DATA LOGGING WITH A COMPUTER The CMR35 system includes the software and cable needed to transfer measurements made by the transmitter and relayed through the receiver to any computer running a Windows7 Windows Vista or WindowsXP operating system This section explains in order how to nstall the software and a USB driver e Verify the installation Use the software INSTALLING THE SOFTWARE AND A USB DRIVER To install the CMR35 system s interfac
22. ing data logging software and USB driver 1 Place the installation CD in your computer s CD DVD drive and close the drawer 2 After the CD loads an AutoPlay screen for the CMR35 V1 0 20 software will appear Left click Run autorun exe 3 The next screen to appear is an Adobe Flash Player 9 screen with the General logo at upper left and CMR35 at upper right Left click the Software Installation button If the Flash application is not installed on your computer or if your version is outdated visit www adobe com to install or upgrade Flash player 4 The next screen will be a File Download Security Warning Respond to the question Do you want to run or save this file the 20 0KB install exe file by clicking Run 5 The next screen will be a Windows User Account Control dialog box Respond to the question Do you want to allow the following program from an unknown publisher to make changes to your computer by clicking Yes 6 The dark blue Wireless clamp meter Setup screen that appears next advises closing any applications you may be running Close any open applications other than Flash and click OK 7 A dialog box will appear next By default the setup program will install the wireless clamp meter software in this folder C ProgramFiles x86 Wirelessclampmeter Unless you want to install the software elsewhere left click the icon button at the left of the dialog box to begin setup 8 The next screen is called t
23. lock and alarm 5 HOLD MAX H button Locks maximum measured value 6 MAX MIN button Main use is for entering maximum minimum measurement mode Secondary function indicated by stencil at right of button is to change digits of clock and alarm settings ALARM button CLOCK SET button 9 SEARCH button Main use is for enabling manual searching Secondary function indicated by MUTE ALARM stencil below button is to mute setpoint alarms CHANNEL button 7 USB jack 2 PWR amp CO V jack For plugging in external 3VDC power supply 14 CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 15 v M j 2 W mVA Hz Un MAX MIN HOLD B Symbol Description 3 Transmission ID code Channel setting 1 to 6 When blinking indicates signal being received from transmitter MEMO Indicates displayed value is memorized maximum or minimum measurement READ Indicates displayed value is recalled maximum or minimum measurement Hi Lo Lit in alarm mode when measured value is higher or lower than alarm setpoint 80 88 Lit in 24 hour clock mode TT Lit in DC voltage measurement mode Lit in AC voltage measurement mode Lit when measured voltage is negative Lit in diode check mode A Lit in relative measurement mode en Lit in continuity check mode 888g Display reading Lit when receiver s batteries need replacing Lit when transmitter s batteries need replacing MA
24. manship for a period of 1 year Subject to certain restrictions General will repair or replace this instrument if after examination the company determines it to be defective in material or workmanship This warranty does not apply to damages that General determines to be from an attempted repair by non authorized personnel or misuse alterations normal wear and tear or accidental damage The defective unit must be returned to General Tools amp Instruments or to a General authorized service center freight prepaid and insured Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product In no event shall General be liable for any incidental special consequential or punitive damages or for any cost attorneys fees expenses or losses alleged to be a consequence of any damage due to failure of or defect in any product including but not limited to any claims for loss of profits 34 CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 0 Page 35 RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality However in the event your instrument requires repair please contact our Customer Service to obtain an RGA Return Goods Authorization number before forwarding the unit via prepaid freight to the atten tion of our Service Center at this address General Tools amp Instruments 80 White Street New York NY 1
25. mp trigger 5 Function switch HOLD button D 8 REL SEL button 9 TX ON button FUNCTION button 17 SET button 2 Nameplate 09 COM negative or ground input jack positive input jack 55 Liquid crystal display Fig 1 The transmitter s controls indicators and jacks CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 6 d IL O 0 0 0 0 AUTO RANGE Hz 2 Symbol Description Transmission ID code Channel setting Antenna blinking while in the process of transmitting Transmission span selection options are TS 2 10 30 60 and 120 seconds Lit in DC voltage measurement mode N Lit in AC voltage measurement mode e Lit when measuring negative polarity AUTO RANGE Autoranging on indicator e1 Lit in continuity check mode p Lit in diode check mode Data hold indicator Lit in relative mode or when zeroing display Lit when battery voltage is low Hz Lit in frequency measurement mode MQ kQ Q Unit of resistance measurement mV V Unit of voltage measurement A Unit of current measurement HHEH Measured value Fig 2 Symbols used on the transmitter s liquid crystal display CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 8 7 OPERATING INSTRUCTIONS MAKING BASIC MEASUREMENTS WITH THE TRANSMITTER As you make measurements be aware that pressing the HOLD button on the transmitter callout 6 of Fig 1 temporarily stores memorizes the displayed
26. own in the figure below Pressing the button again ends transmission and causes the 1 symbol to disappear lic A TRANSMITTING NOT TRANSMITTING 1 Y go AUTO RANGE AUTO RANGE SETTING THE TRANSMITTER S TRANSMISSION SPAN AND ID CODE CHANNEL The other two buttons are the FUNCTION and SET buttons to the right of the TX ON button callouts 10 and 11 of Fig 1 They work together Using the first of the following two figures as a guide first press the FUNCTION button for two seconds to enter transmission span selection mode Once in this mode briefly press but do not hold the SET button as many times as needed to set the transmission span duration to 2 10 30 60 or 120 seconds Then save the setting by pressing the FUNCTION button for two seconds to return to measuring mode The next step is to set the ID code Channel of the transmitter to match the ID code Channel of the receiver Using the second of the following two figures as a guide first press the FUNCTION button for two seconds to enter transmission span selection mode Then press it again to enter ID code selection mode Once in this mode briefly press but do not hold the SET button as many times as needed to set the ID code to 1 2 3 4 5 or 6 corresponding to transmitter 1 2 3 4 5 or 6 on Channel 1 2 3 4 5 or 6 Then save the setting by pressing the FUNCTION button for two seconds to return to measuring mode Transmission span set
27. ph 3 Print Table or Graph 4 Exit Close Wireless clamp meter program Setup Edit View e Open Save Print Exit Note Since the main display window can only show data for one channel to save data for another channel the display must be configured to show it To configure the system and software to log and display data from more than one transmitter follow the instructions for the Monitor window in the View menu section below The Setup menu Com port Select auto scan com port or any of 16 dedicated com ports 1881 CMR35 Wireless clamp meter M Auto scan com port Select port amp d P c c c Graph scales User can select any of eight time axial scales from 25 to 200 in multiples of 25 Alarm setting In DC AC voltage or current measurement mode if measured value is higher than Hi alarm setpoint or lower than Lo alarm setpoint alarm will sound Alarm setting iv Alarm Unit s rn Time axial scales 75 zi C Low Graph scales K Channel Power rate User must input voltage power factor P F and currency unit kWh rate here to enable estimation of electricity charges Default P F is 0 8 Display Name Serial Number Place Channel 1 Chi 01 Office M 110 Channel 2 Che Channel 3 cha Channel 4 Cha Channel User can Channel 5 change name and
28. sed and not enclosing a current carrying conductor 4 On the transmitter set the function switch to the V position and press the TX ON button 5 Note that the transmitter s display is reading stray voltages of less than 1V Confirm that the receiver s display is tracking these measurements 6 Note that the software installation added a Wireless Clamp Meter icon depicting a computer screen to your computer s Start button Left click it to open the Wireless Clamp Meter application T Left click the Connect icon depicting two computers below the Help button on the Wireless Clamp Meter screen 8 Left click the button at the right of the Connect icon The software s main display will begin showing in three separate windows in three different forms the measurement data currently being captured by the transmitter relayed wirelessly to the receiver and sent to the computer via the USB cable 23 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 24 USING THE SOFTWARE To use the software refer to the callouts accompanying the following partial screen shots Each screen shot and set of callouts detail the functions available from one of the pull down buttons on the software s main menu bar The explanations in the View menu section cover the features of the software s three main windows the Monitor the Table and the Graph The File menu mel CMR35 Wireless cla CD Open xls file 2 Save Table or Gra
29. t Monitor windows to default positions The Help menu p CMR35 Wireless clamp meter File Setup Edit View Record Option Window 8 90 BH amp NH 3 Z Wireless Clamp Meter User s Manual Help About Open Wireless Clamp Meter User s Manual Windows Windows 7 Windows Vista and Windows XP are registered trademarks of Microsoft Corporation 29 SPECIFICATIONS ELECTRICAL SPECIFICATIONS AC Current Measurement CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 A Page 30 Accuracy Maximum input current 1 8 of reading 10 digits 1 of reading 5 digits 600A Accuracy Maximum input current 1 8 of reading 10 digits 1 of reading 5 digits Accuracy Input impedance 0 75 of reading 3 digits 600A Maximum input voltage Resolution 1 of reading 3 digits Accuracy Input impedance Maximum input voltage 0 001V 0 01V 1 5 of reading 11MQ 10 digits 30 0 1V 1 5 of reading 710 5 digits 600Vrms CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 31 Resistance Measurement f Maximum Resolution Accuracy Remarks input voltage 0 1Q 0 001k9 1 of reading open circuit 5 digits voltage is 0 4V 0 1kQ Measuring current varies with 0 001MO 3 of reading resistance 5 digits measured 0 01MQ 5 o
30. ting Save setting by pressing FUNCTION button and holding for two seconds to return to measuring mode ID code Channel setting Save setting by pressing FUNCTION button and holding for two seconds to return to measuring mode CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 13 N AUTO RANGE Ll PO c Measuring mode Press FUNCTION button and hold for two seconds to enter transmission span selection mode Short press SET button to select transmission span of 2 10 30 60 or 120 seconds Measuring mode i Press FUNCTION button for two seconds to enter transmission span selection mode i Press again to enter ID code selection mode Short press SET button to select ID code 1 2 3 4 5 or 6 Before moving on to operating the receiver familiarize yourself with Figures 3 and 4 Fig 3 shows the controls indicators and jacks of the receiver Fig 4 shows the symbols used by the receiver s liquid crystal display and their positions 13 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 9 Page 14 H RIGHT SIDE Fig 3 The receiver s controls indicators and jacks CD Nameplate Q Liquid crystal display 3 POWER button READ button Main use is for recalling stored maximum and minimum measurements Secondary function indicated by A stencil at right of button is for adjusting settings of c
31. ting in DCA DC Amperes or ACA AC Amperes measurement mode If these conditions are met the Electric Power Cost Monitor window will automatically be displayed and updated Unlike the Monitor Record and Graph windows the Electric Power Cost Monitor window cannot be minimized maximized or adjusted in size The Record menu CMR35 Wireless clamp meter CD Connect When checked indicates interface to receiver is enabled 2 Start When checked indicates data from transmitter is being logged 3 Pause When checked pauses reception of data 4 Stop When checked stops reception of data CMR35 Wireless clamp meter File Setup Edit View Record Option Window Help ga gt HM amp gt 9 The four options above also are available from the toolbar below the main menu as shown above 27 CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 28 The Option menu CMR35 Wireless clamp meter Monitor tab Graph tab Select colors of main displayed value and Select colors of graph scale and graph background background and enter graph title Table tab Select table background color and type of grid line flat inset or raised 28 CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 29 The Window menu CMR35 Wireless clamp meter File Setup Edit View Record Option amp a gt E v Returns Monitor Table Graph and Electric Power Cos
32. to a full scale range of 0 to 600A When you have finished making measure ments move the function switch to the OFF position To measure the DC current flow through a conductor move the function switch to the A position squeeze the clamp trigger to open the clamp and place one conductor only in the center of the clamp as shown in the earlier figure CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 4 8 In DC current measurement mode the CMR35T selects a 0 to 400A measurement range unless the input is greater than 400A In this case the unit automatically switches to a full scale range of 0 to 600A Read the value after it stabilizes If the symbol appears at the left of the measured value as shown in Fig 2 the current flow is opposite the direction indicated by the polarity marks on the clamp To reverse the flow unclamp the meter rotate the clamp 180 and then reclamp the jaws around the line When you have finished making measurements move the function switch to the OFF position MEASURING VOLTAGE To measure the DC voltage between two points in a circuit move the function switch to the V position Press the REL SEL button until the x symbol does not appear at the left of the display Plug the rubber covered end of the black probe into the COM terminal of the transmitter unit and the rubber covered end of the red probe into the unit s terminal Then touch the metal ends of the black and re
33. ts first shut off all current flowing through it to avoid damaging the multimeter in one of its most sensitive modes Move the function switch to the Q position and press the REL SEL button until the symbol appears at the lower left of the display Then plug the rubber covered end of the black probe into the COM jack of the transmitter and the rubber covered end of the red probe into the jack Then touch the metal ends of the black and red probes to the points between which you wish to check for continuity If there is continuity between the points the beeper will sound and the reading on the display will be less than 1000 When you have finished making continuity checks move the function switch to the OFF position MEASURING FREQUENCY To measure the frequency of an AC voltage or current move the function switch to the Hz position Plug the rubber covered end of the black probe into the COM jack of the transmitter and the rubber covered end of the red probe into the jack CMR35 Manual FINAL4_020911 awb 2 9 11 11 54 0 Page 11 A WARNING A To avoid exposing yourself to a harmful or a fatal voltage and damaging the transmitter make sure that the AC voltage or current whose frequency you are measuring has an amplitude of less than 600V As in current measurement mode the CMR35T automatically chooses the narrowest measurement range that includes the tested value The six available full scale ranges are 0 to 5H
34. with the limits for a Class B Digital Device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction may cause harmful interference to radio communication However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna ncrease the separation between the equipment and receiver Power the equipment via an outlet or circuit other than the one to which the receiver is connected Consult the seller or an experienced radio TV technician for help 33 CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 0 Page 34 OPERATION amp MAINTENANCE TIPS To ensure the accuracy of measurements avoid using the transmitter and receiver units n electrically noisy environments e Near conductors carrying strong currents n rain or snow e n extreme heat including in direct sunlight or cold e Without fully charged batteries Whenever measurements appear erratic or the symbols EE 8 or appear
35. xample If the relative value exceeds this fixed value the display will read OL To exit relative measurement mode press the REL SEL button again to make the symbol disappear from the top line of the transmitter s display To reactivate the autoranging function move the function switch to the OFF position and then to the position corresponding to the next type of measurement you wish to make The REL SEL button also has a secondary function zeroing the transmitter s display in DC current measurement mode If the display shows a residual reading before the jaws of the clamp are placed around a conductor or before the transmitter s leads are connected to a circuit pressing the REL SEL button will zero out the display and deactivate the autoranging function As explained earlier to exit relative measurement mode press the REL SEL button again to make the 98 symbol symbol disappear To reactivate autoranging move the function switch first to the OFF position and then to the desired measurement position 11 CMR35 Manual FINAL4 020911 awb 2 9 11 11 54 12 USING THE RECEIVER WITH THE TRANSMITTER Three buttons on the front panel of the transmitter must be pressed to prepare it to wirelessly send readings to the receiver One is the TX ON button callout 9 of Fig 1 Pressing this button activates transmission mode and causes the 1 symbol to appear at the upper left of the display as sh
36. z 0 to 50Hz 0 to 500Hz 0 to 5kHz 0 to 5OkHz and 0 to 100kHz Read the measured value once it stabilizes When you have finished making frequency measurements move the function switch to the OFF position MAKING RELATIVE MEASUREMENTS Pressing the transmitter s REL SEL button callout 7 8 of Fig 1 while the transmitter is measuring AC or DC current flow lights the symbol on the top line of the transmitter s display See Fig 2 When this mode called relative measurement mode is activated the transmitter will display the difference between the values of successive inputs For example if the transmitter was measuring 10 Amperes when the REL SEL button is pressed and then is connected to a line carrying 15 Amps the transmitter s display will read 5A the difference between 15A and 10A If the transmitter s clamp or probes are then switched to a line carrying 50 Amps the display will read 40 Amps 50A minus the first input value 10A A series of relative measurements can be carried out indefinitely Pressing the REL SEL button when the transmitter is operating in AC or DC current measurement mode also deactivates the autoranging function This causes the AUTO RANGE text to disappear from the transmitter s display and sets the transmitter s measurement range to a fixed value the lowest full scale value that can accommodate the value being measured when the REL SEL button was last pressed 10A in the above e
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