CAUTION 1. Correct measurement may not be performed when using the meter in a ferromagnetic/intense electric field such as a place near a transformer, high-current circuit or a radio. 2. The meter may malfunction or correct measurement may not be performed when measuring a special waveform such as that from an inverter circuit. 1-3 Overload protections Function Max. rated input value AC 600 V DCV DC 600 V / CD800b Input terminals ACV Hz / + (Red) and - (Black) / mA AC/DC Max. overload protection input AC/DC 660 V AC/DC 600 V Voltage input prohibited 0.6 A/600 V fuse breaking capacity 10 kA 2-1 Applications This instrument is a digital multimeter with rms value response, designed for measurements within the range specified as CAT.IV 300 V / CAT.III 600 V in IEC61010. INSTRUCTION MANUAL 2-2 Features • Safety design compliant to IEC61010. • AC measurements with True RMS conversion. • High portability thanks to the case-integrated design. • Backlight. Measurement categories (Overvoltage categories) CAT. II : Primary circuit of equipment with a power cord to be connected to a mains socket. CAT. III : Primary circuit of equipment that inputs power directly from the distributor and the circuit from the distributor to the mains socket. CAT. IV : Circuit from the leading wire to the distributor. Dempa Bldg., 4-4 Sotokanda 2-Chome Chiyoda-ku, Tokyo 101-0021, Japan 01-1611 2040 6006 [1] SAFETY PRECAUTIONS Before use, read the following safety precautions. This instruction manual explains how to use your new digital multimeter CD800b safely. Before use, please read this manual thoroughly. After reading it, keep it [3] NAMES OF COMPONENT UNITS The meaning of the symbols used in this manual and attached to the product is as follows. : Very important instructions for safe use. • The WARNING messages are intended to prevent accidents to operating personnel such as burn and electrical shock. • The CAUTION messages are intended to prevent damage to the instrument. Symbols attached to the product : Symbol soliciting reference to this manual before use : Double or enhanced insulation : Ground : Resistance : Diode : Buzzer : Capacitance : Backlight : Fuse 3-1 Multimeter and test leads Display Test pins Removable test pin covers View when not attached HOLD button △ REL button Finger guards Display Removable test pin covers When covered: CAT.IV 300 V CAT.III 600 V When uncovered: CAT.II 600 V Test probe (red) SELECT button RANGE button Test probe (black) Power/function switch 3-2 Display Coverage Note 0.000 - 3.000 V Open voltage across input terminals: About 3.2 V “OL” is displayed at 3.000 V or more. Forward test Diode Unit : Voltage alarm : Data Hold indicator : Auto Range indicator : Low battery indication : Auto Power Save indicator : Relative operation indicator : Continuity check : Diode : Capacitor : Alternative Current : Direct Current : MAX/MIN mode indicator 3-3 Attaching the strap Hand strap Cathode [6] MAINTENANCE 1. This section is very important for safety. Read and understand the following instruction fully and maintain your instrument properly. 2. The instrument must be calibrated and inspected at least once a year to maintain the safety and accuracy. Anode Example of Good item: “OL” display Example of NG item: Other display 6-1 Maintenance and inspection 1) Appearance • Is the appearance not damaged by falling? ) 2) Test leads • Is the cord of the test leads not damaged or the core wire not exposed at any place of the test leads? Coverage Note 0.0 - 600.0 Ω Open voltage across input terminals: About 1.0 V If any of the above is found with the appearance, do not use the equipment and have it repaired. The buzzer beeps at 10 to 50 Ω or less. 6-2 Calibration The manufacturer may conduct the calibration and inspection. For more information, please contact the dealers. 6-3 Cleaning and storage CAUTION Display 1. The main unit is not resistant to volatile solvent and must not be cleaned with lacquer thinner or alcohol. If it gets dirty, wipe lightly with a soft cloth moistened with a small amount of water. 2. The main unit is not resistant to heat. Do not place it near a source of high heat. 3. Do not store the instrument in a place where it may be subjected to excessive vibrations or from where it may fall. 4. For storing the instrument, avoid hot, cold or humid places or placed under direct sunlight or where condensation is anticipated. 5. When the instrument is not to be used for a long period, be sure to remove batteries from it. ) Coverage Range 0.00 - 600.0 μF 60.00 n/600.0 n/6.000 μ/60.00 μ/600.0 μ 6-4 Battery and fuse replacement Discharge the capacitor before measurement. It takes a while to measure large capacitance. This measurement is not suitable for measurement of a capacitor with a high leak current such as an electrolytic capacitor. WARNING Fuse 5-5 AC current measurement/DC current measurement (ACmA/DCmA) WARNING 1. Never apply voltage to the input terminals. 2. Do not apply an input exceeding the maximum rated current to the input terminals. 3. Be sure to connect the meter in a series connection via the load. Load Power source Power source 7-1 Warranty and provision Load Coverage Range ACmA 0.00 - 600.0 mA 60.00/600.0 mA DCmA 0.00 - 600.0 mA 60.00/600.0 mA Input resistance: About 1 Ω (excluding fuse resistance). ACmA accuracyassured frequencies: 45 Hz to 1 kHz. − 5 − ① Using a Phillips screwdriver, turn the battery lid retaining screw (x1) until it becomes loose. ② Press the position marked PUSH to lift the battery lid, and then remove it. ③ Replace the batteries by taking care of the polarity. Alternatively, replace the fuse if required. ④ Attach the battery lid and tighten the retaining screw. [7] AFTER-SALE SERVICE Incorrect measurement When the SELECT button is held depressed (for more than 2 sec.), the backlight of the LCD turns on. Holding the same button depressed again turns it off. The backlight also turns of automatically in about 30 seconds. 4-6 Range Hold : RANGE button 5-2 AC voltage measurement (ACV), frequency measurement (Hz) Display Coverage Ranges ACV Hz 0.005 ～ 600.0 10.00 ～ 99.99 k 6.000/60.00/600.0 V 99.99/999.9/9.999 k/99.99 kHz The accuracy-assured frequencies of the ACV measurement are 45 Hz to 500 Hz (sine wave AC). Hz input sensitivity : 10.00 to 9.999 kHz: ≥1 Vrms. 10.00 kHz or more: ≥5 Vrms. Press the RANGE button momentary to set the manual range mode (AUTO disappears in the display). In manual range mode, press the button again to step through the ranges. To return to the auto mode, press and hold the button for 1 sec. or more (then ‘AUTO’ is shown). Manual range hold mode is not available in the Hz, , and functions. When the △ REL button is held depressed, the meter enters the MAX/MIN mode, in which the measurement range is fixed and the Auto Power Save and Relative value measurement functions are canceled. • Every time the SELECT button is pressed, the displayed information changes as follows : Current measurement display (MAX MIN displayed) → MAX value display (MAX displayed) → MIN value display (MIN displayed) → Current measurement display (MAX MIN displayed) → … • Current measurement display : The meter stores the maximum and minimum values while displaying the current measurement value. The buzzer beeps every time a value is updated. The maximum and minimum values can be checked by pressing the button to view the MAX value display and MIN value display. To cancel the MAX/MIN mode, press the button for 1 sec. or more. • MAX value display : Maximum value measured since the entry in MAX/MIN mode. • MIN value display : Minimum value measured since the entry in MAX/MIN mode. The MAX/MIN mode can also be entered when the relative value measurement function is active ( △ displayed). In this case, the MAX/MIN mode displays the relative values assuming that the value at the moment the button is pressed is 0 (reference value). MAX/MIN memory mode is not available in the Hz, , and functions. * The MAX/MIN mode is canceled when the function or range is switched. When the HOLD button is pressed, the current display is hold ( appears on the display). The display will not be changed even when the input varies thereafter. Press the button again to cancel the Data Hold mode ( on the display disappears). * The Data Hold mode is also canceled when the function switch is switched or the RANGE or SELECT button is pressed. Set the function switch to ACV. Each press of the SELECT button alternates ACV and Hz. appears on the display when a voltage of 20 V or more is input. At the moment the input exceeds 20 V, the buzzer beeps and the backlight flashes to indicate it. 5-3 DC voltage measurement (DCV) Display Coverage Ranges DCV 0.0 m ～ 600.0 600.0 m/6.000/60.00/600.0 V Set the function switch to DCV. appears on the display when a voltage of 20 V or more is input. At the moment the input exceeds 20 V, the buzzer beeps and the backlight flashes to indicate it. 5-4 Resistance ( ), diode ( ), continuity ( . Set the function switch to Each press of the SELECT button switches the function in order of → → … 5-4-1 Resistance measurement ( Sanwa offers comprehensive warranty services to its end-users and to its product resellers. Under Sanwa's general warranty policy, each instrument is warranted to be free from defects in workmanship or material under normal use for the period of one (1) year from the date of purchase. This warranty policy is valid within the country of purchase only, and applied only to the product purchased from Sanwa authorized agent or distributor. Sanwa reserves the right to inspect all warranty claims to determine the extent to which the warranty policy shall apply. This warranty shall not apply to fuses, disposables batteries, or any product or parts, which have been subject to one of the following causes: 1. A failure due to improper handling or use that deviates from the instruction manual. 2. A failure due to inadequate repair or modification by people other than Sanwa service personnel. 3. A failure due to causes not attributable to this product such as fire, flood and other natural disaster. 4. Non-operation due to a discharged battery. 5. A failure or damage due to transportation, relocation or dropping after the purchase. − 6 − Note: 1) Prior to requesting repair, please check the following: • Capacity of the built-in batteries and polarity of installation. • Discontinuity of the test leads. • Functioning of the fuse (if it is now blown). 2) Repair during the warranty period: The failed meter will be repaired in accordance with the conditions stipulated in 7-1, Warranty and provision. 3) Repair after the warranty period has expired: • When the original functionality is expected to be restored by repair, we will repair the product upon request and payment by the customer. • In some cases, repair and transportation cost may become higher than the price of the product. Please contact Sanwa authorized agent/service provider in advance. • The minimum retention period of service functional parts is six (6) years after the discontinuation of manufacture. This retention period is the repair warranty period. Please note, however, if such functional parts become unavailable for reasons of discontinuation of manufacture, etc., the retention period may become shorter accordingly. 4) Precautions when sending the product to be repaired • To ensure the safety of the product during transportation, place the product in a box that is larger than the product 5 times or more in volume and fill cushion materials fully. • Clearly mark “Repair Product Enclosed” on the box surface. • The cost of sending and returning the product shall be borne by the customer. ) Coverage Ranges 600.0/6.000 k/60.00 k/600.0 k/6.000 M/60.00 MΩ The open voltage across the measurement terminals is about DC 1.2 V. If measurement is likely to be influenced by noise, shield the object to measure with negative potential (COM). If a finger touches a test pin during measurement, measurement will be influenced by the resistance in the human body, and that results in measurement error. − 4 − Safety standards IEC61010-1, IEC61010-2-030, IEC61010-2-33, IEC61010-31 CAT.IV 300 V/ CAT.III 600 V EMC Directive, RoHS Directive IEC61326 (EMC), EN50581 (RoHS) Accessories Instruction manual, “AAA”-size alkaline battery x 2, hand strap 8-2 Optional accessory Hanger magnet: HM-1 8-3 Measurement ranges and accuracies Accuracy-assured temperature/humidity ranges: 23±5 ºC, ≤ 80 %RH, no condensation. rdg: reading. dgt: digits (lowest digits) As the ACV and ACmA measurements employ the rms value response, the accuracy-assured ranges and crest factor become as follows. Accuracy range: 1 % to 100 % of measurement range. Crest factor CF: Full scale CF < 1.8, half scale CF < 3.6. Function AC voltage ACV Range Accuracy 6.000 V ± (1.2 %rdg+9 dgt) 60.00 V 600.0 V ± (1.2 %rdg+5 dgt) DC voltage DCV 99.99 kHz 600.0 mV Input resistance: About 10 MΩ 999.9 Hz 9.999 kHz 6.000 V 60.00 V ± (0.5 %rdg+3 dgt) ± (0.8 %rdg+3 dgt) 600.0 V 600.0 Ω 6.000 kΩ Resistance 60.00 kΩ ± (1.2 %rdg+5 dgt) 600.0 kΩ 6.000 MΩ ± (2.0 %rdg+ 5 dgt) 60.00 MΩ ± (4.0 %rdg+ 5 dgt) △ - Σ method Open voltage: About DC 1.0 V Buzzer beep generated at 10 to 50 Ω or less. 60.00 nF 600.0 nF AC detection method True RMS method (AC coupling) Display Max. 6000 counts 60.00 μF Sampling rate Max. approx. 5 times/sec. 600.0 μF Over load indication “ OL” mark indication on digital display Auto and Manual Polarity switching Auto (“-” indicated when negative voltage is input) Low battery indication mark displayed when battery voltage drops at 2.3 V or less. Operating environmental conditions Altitude ≤2000 m, indoor use, pollution degree II Operating temperature/ humidity ranges -10 ºC to 40 ºC. Humidity range is as follows (without condensation): Max. 80 %RH at 5 ºC to 31 ºC, decreasing linearly to 50 %RH at 40 ºC. Storage temperature/ humidity range -20 ºC to 40 ºC: ≤80 %RH (without condensation). 40 ºC to 50 ºC: ≤70 %RH (without condensation). (Batteries should be removed when the instrument is not to be used for a long period.) Temperature coefficient Below 18 ºC and above 28 ºC: Accuracy x 0.15 should be added function.) per ºC. (Accuracy x 0.25 should be added in the Power supply LR03 (“AAA”-size alkaline battery)1.5 V × 2 Auto Power Save Power Save in about 15 minutes after last operation. Typ. 20 µA Current drain About 1.5 mA (backlight off). max. about 38 mA Battery life About 600 hours (backlight off) Fuse 600 mA/600 V, φ 6.3 x 32 mm Breaking capacity 10 kA (ceramic tube fuse) (part number : F0325） Dimensions & mass 166 (H) x 100 (W) x 43 (D) mm, about 360 grams (incl. batteries) Test lead length About 0.8 m − 7 − Capacitance AC current ACmA DC current DCmA • Open voltage: About DC 1.8 V • Measurement current varies depending on the resistance value of the object measured. Open voltage: About DC 3.2 V “OL” displayed at 3.000 V or more. Diode test Continuity check Range selection Remarks Input resistance: About 10 MΩ • Accuracy-assured frequencies: 45 Hz – 500 Hz Input resistance: About 10 MΩ • Accuracy not assured below 10 Hz. • Sensitivity 10 Hz: ≥ 1 Vrms 10 kHz: ≥5 Vrms 99.99 Hz Frequency Hz 8-1 General specifications Operation method → 0.0 ～ 60.00 MΩ 7-3 SANWA web site http://www.sanwa-meter.co.jp E-mail: [email protected] → Ω When the meter is switched on while holding the △ REL button displayed, the display shows for 2 seconds and the buzzer beep is canceled. Even when the buzzer is canceled, it still beeps in the case of OL alarm, in the continuity check, when the meter is turned on and before Auto Power Save. To enable all of the buzzer sounds, turn the meter off then on again. * This mode cannot be used when the Auto Power Save function is canceled. Customers are asked to provide the following information when requesting services: 1. Customer name, address, and contact information 2. Description of problem 3. Description of product configuration 4. Model Number 5. Product Serial Number 6. Proof of Date-of-Purchase 7. Where you purchased the product Please contact Sanwa authorized agent / distributor / service provider, listed in our website, in your country with above information. An instrument sent to Sanwa / agent / distributor without those information will be returned to the customer. ) Display Resistor 7-2 Repair ) , capacitance ( WARNING • Never apply voltage to the input terminals. 4-10 Disable Buzzer [8] SPECIFICATIONS 1.If the rear case or the battery lid is removed with input applied to the input terminals, you may get electrical shock. Before starting the work, always make sure that no input is applied. 2.Before starting the work, be sure to turn OFF the main unit power and release the test leads from the circuit. 3. Be sure to use a fuse of the specified rating or type. Never use a substitute of the fuse or never make a short circuit of the fuse. Batteries Correct measurement 4-5 Backlight : SELECT ( ) button Check the following items before starting the daily measurement work. • Appearance check : Check the appearance of the meter to see if it is free from damage caused by falling, etc. • Accessory : Check that the test leads are free from irregularities such as wire disconnection and crack. • Battery: Install the battery before using the meter for the first time. Ensure low battery indication is not displayed and, if it is displayed, that the replace the battery with new one. If nothing is displayed, the battery may be exhausted totally (see 6-4). • Test lead wire disconnection can be checked by setting the function switch to and shorting the test pins. • Also check that the meter and your hands are not moistened by water, etc. − 3 − Note : As the internal resistance of the current range comes in series, the current measured in the current measurement drops accordingly. This influence becomes important in a circuit with low resistance. Reverse test Example of Good item: Forward voltage drop display Example of NG item: 0.000 V display, “OL” display 5-4-4 Capacitance measurement ( When the SELECT button is pressed, the functions change as follows. ACV position : ACV → Hz → ACV → … position : → → → → → … mA position : AC mA → DC mA → AC mA → … 5-1 Start-up inspection Insert the hand strap into the strap hole as shown in the figure. WARNING Display 4-4 Measurement function selection : SELECT button 4-9 Data Hold : HOLD button Set the function switch to mA. Each press of the SELECT button alternates ACmA and DCmA. 5-4-3 Continuity check ( 4-3 Low battery indication − 2 − ) The Auto Power Save function turns the display off automatically in about 15 minutes after the last operation or after an input of 20 V or higher was applied to save the power consumption. To return from this status, press the SELECT or RANGE button or turn the power switch to OFF then to another position. To disable the Auto Power Save function, switch the meter on by turning the function switch while holding the SELECT button depressed. A short buzzer beep is generated, “ ” is displayed for 2 seconds, and the indicator disappears. * A small current flows inside the meter even in the Auto Power Save status. After measurement, always turn the function switch to the OFF position. 4-8 MAX/MIN memory : △ REL (MAX/MIN) button Strap hole − 1 − 5-4-2 Diode test ( 4-2 Auto Power Save WARNING 1. Never apply an input signal exceeding the maximum rating input value of each function. 2. Be sure to disconnect the test pins from the circuit when changing the function. 3. Always keep your fingers behind the finger guards on the probe when making measurements. 4. After measurement, release the red and black test pins from the object measured and set the function switch to the OFF position. When the △ REL button is pressed, △ appears on the display, the measuring range is fixed and the display shows the relative values assuming that the value at the moment the button is pressed is 0 (reference value). When the button is pressed again, △ disappears and the relative value measurement is canceled. Relative value measurement mode is not available in the Hz, and functions. 1-1 Explanation of Warning Symbols WARNING To ensure the instrument is used safely, be sure to observe the instruction when using the instrument. 1.This instrument is a digital multimeter for metering low voltages. Never use it on electric circuits that exceed CAT.IV 300 V or CAT.III 600 V. 2.Pay special attention when measuring the voltage of AC 33 Vrms (46.7 V peak) or DC 70 V or more to avoid injury. 3.Never apply an input signal exceeding the maximum rating input value (see 1-3). 4.Never use the meter for measuring the line connected with equipment (i.e. motors) that generates induced or surge voltage since it may exceed the maximum allowable voltage. 5.Never use meter if the meter or test leads are damaged or broken. 6.Never use uncased meter or the meter without the lid. 7.Always keep your fingers behind the finger guards on the probe when making measurements. 8.Be sure to disconnect the test pins from the circuit when changing the function. 9.Before starting measurement, make sure that the function and range are properly set in accordance with the measurement. 10.Never use meter with wet hands or in a damp environment. 11.Never open tester case except when replacing batteries or fuse. Do not attempt any alteration of original specifications. 12.To ensure safety and maintain accuracy, check the meter in the start-up inspection as well as in the inspection/calibration to be performed at least once a year. 13.The meter is for indoor use only. 14.Wear insulating protective gear when using the meter with equipment containing a hazardous live part. Also be sure to observe your local and national safety rules. 15.Always use the meter in a specified method to prevent the protective function from being imperiled. Turn this switch to turn on and off the power and to switch the measuring functions. [5] MEASUREMENT PROCEDURE 4-7 Relative value measurement : △ REL button together with the product for reference to it when necessary. If you use the product in a method not specified in this manual, the protection function of the product may be imperiled. The instruction given under the heading of “ WARNING” and “ CAUTION” must be followed to prevent accidental burn or electrical shock. 1-2 Warning Instructions for Safe Use 4-1 Power/Function switch When the batteries are exhausted until the supply voltage drops below about 2.3 V, the indicator lights on the display. Replace the batteries when this indicator appears. [2] APPLICATIONS AND FEATURES DIGITAL MULTIMETER [4] DESCRIPTION OF FUNCTIONS ± (3.0 %rdg+10 dgt) 6.000 μF ± (5.0 %rdg+10 dgt) 60.00 mA 600.0 mA 60.00 mA 600.0 mA ± (1.6 %rdg+5 dgt) ± (1.2 %rdg+5 dgt) Auto range only. Accuracy with a capacitor with low leak current such as a film capacitor or equivalent. Less than 10 nF add +15 dgt to the accuracy. Input resistance: About 1 Ω (excluding fuse resistance) Accuracy-assured frequencies: 45 Hz to 1 kHz Input resistance: About 1 Ω (excluding fuse resistance) Accuracy calculation method Example) AC voltage measurement (ACV) Displayed value: 100.0 V Range accuracy: 600.0 V range ± (1.2 %rdg + 5 dgt) added to accuracy above. Error: ±(100.0 V x 1.2 %rdg + 5 dgt) = ±1.7 V True value: 100.0 V ±1.7 V (between 98.3 - 101.7 V) * In the 600.0 V range, 5 dgt corresponds to 0.5 V. Specifications and external appearance of the product described above may be revised for modification without prior notice. − 8 −
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