FINE INSTRUMENTS CORPORATION

Transcription

1 Model 41 Resistance USER S MANUAL a world leader in test & measurement FINE INSTRUMENTS CORPORATION B11, A-DONG, SMART VALLEY, SONGDOMIRAE-RO 3, YEONSU-GU, INCHEON, KOREA - TEL: (82-32) FAX: (82-32) fine@finest.co.kr - Internet: or co.kr Copyright 215 Fine Instruments Corp. All right reserved. Specifications subject to change without notice. Litho in Korea. FINE INSTRUMENTS CORPORATION

2 CONTENTS 1. SAFETY INFORMATION 2 2 CONTROL AND INDICATORS 5 3. METER FUNCTIONS AND SPECIAL FEATURES AC/DC Voltage 8 WARNING! SOURCES LIKE SMALL HAND-HELD RADIO TRANSCEIVERS, FIXED STATION RADIO AND TELEVISION TRANSMITTERS, VEHICLE RADIO TRANSMITTERS AND CELLULAR PHONES GENERATE ELECT ROMAGNETIC RADIATION THAT MAY INDUCE VOLTAGES IN THE TEST LEADS OF THE MULTIMETER. IN SUCH CASES THE ACCURACY OF THE MULTIMETER CANNOT BE GUARANTEED DUETO PHYSICAL REASONS DC milli-voltage Resistance Insulation Test 3-5. Sleep Mode 4. SPECIFICATIONS

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4 CAUTION 2. CONTROL AND INDICATORS Disconnect the test leads from the points before changing functions. Disconnect circuit power and discharge all high voltage capacitors before testing resistance, or continuity. Always set the meter to the highest range and work downward for an unknown value in the manual ranging mode

5 1. LCD display 2. TEST 3. LOCK 4. Selector 5. V 6. COM 7. LCD display with 28 segments bar-graph. Press this button to initiate an insulation test in the Insulation test mode. Press this button to enter Test lock mode in the Insulation test mode. is displayed on LCD in this mode. Press again to release the lock. Turn the power On or Off and select a test function. Input terminal for insulation test, voltage and resistance functions. Common input terminal for all functions. Switch between AC and DC. Switch between Ω and. Press this button for 2 seconds to enable / disable lights. The backlight automatically turns off after 2 minutes M.5M M 1M M 1G 2G MkG 19 Analog bar-graph with scale(available in the Insulation mode only) RANGE AUTOHOLD Press this button repeatedly to cycle through manual ranges. Press this button for 2 seconds to return to the auto ranging mode. is displayed on LCD only during auto ranging mode. Press this button to activate HOLD for capturing the current displayed value. Press this button again to activate AUTO HOLD for automatically capturing a stable reading, beeping to acknowledge, and holding it on the LCD. Press again to return to normal operation. Indicates autoranging. Indicates direct current or alternating current is selected Low battery alert. This symbol appears when the battery is too low to perform DMM functions. This symbol appears along with when the battery is too low to perform Insulation test. annunciator indicates the HOLD function is selected and annunciators indicate the Autohold function is selected. Indicates the Continuity test function is selected. 12. Indicates Negative Polarity Indicates the function being selected and/or the appropriate measurement units Indicates an out of range value in the Insulation test mode. High voltage symbol. 2. Indicates an insulation test is performed. 21. Indicates an insulation test is locked on. 6 7

6 3. METER FUNCTIONS AND SPECIAL FEATURES 3-1. AC / DC Voltage 3-2. DC milli-voltage RANGE.5M 1M AUTOHOLD 1M LOCK 1M 1G 2G MkG TEST 1. Set the rotary selector to V position. 2. The meter defaults at AC. Press button momentarily to toggle between AC and DC. 3. Insert red lead into V terminal and black lead into COM terminal. 4. Connect black probe to ground and red probe to the side of the circuit closest to the power source. 1. Set the rotary selector to position. 2. Insert red lead into V terminal and black lead into COM terminal. 3. Connect black probe to negative side of the circuit and red probe to positive side of the circuit coming from the power source. RANGE.5M 1M AUTOHOLD 1M LOCK 1M 1G 2G MkG TEST 1V 25V 5V 1V 25V 5V COM CAT IV 6V CAT III V INSULATION COM CAT IV 6V CAT III V INSULATION 8 9

7 3-3. Resistance 3-4. Insulation Test.5M RANGE 1M AUTOHOLD 1V 1M LOCK 1M 25V 1G 2G MkG TEST 5V CAUTION Turn off power and discharge all capacitors on circuit to be tested before attempting incircuit resistance measurements. Accurate measurement is not possible if external or residual voltage is present. 1. Set the rotary selector to Ω position. is displayed. The meter defaults at Ω. 2. Press button momentarily to select. 3. Insert black lead into COM terminal and red lead into Ω terminal. CAUTION Turn off power and discharge all capacitors on circuit to be tested before attempting Insulation test. 1. Insert test leads into V and COM input terminals..5m RANGE 1M AUTOHOLD 1V 1M LOCK 1M 25V 1G 2G MkG TEST 5V 4. Touch the probes across the resistance or circuit to be tested. COM CAT IV 6V CAT III V INSULATION If the resistance of the device is below 4 Ω, there is a continuity beep tone. If the resistance of the device is more than 4 Ω, there is no beep tone. This is useful for checking wiring connections and operation of switches. COM CAT IV 6V CAT III V INSULATION 2. Set the rotary selector to the desired test voltage position. A battery load check is initiated when the switch is moved to this position. If the battery fails, and appear on the display. In this case, Insulation tests cannot be performed until the batteries are replaced. 1 11

8 3. 4. Connect the lead probes to the circuit under test. The meter automatically detects if the circuit is energized. The display shows until you press TEST and a valid insulation resistance reading is obtained. Press and hold TEST button to start the test. The LCD shows (high voltage warning) symbol along with the resistance in MΩ or GΩ. The symbol will be displayed on the LCD until the TEST button is released. The meter displays symbol along with the maximum resistance for the range when the resistance is higher than the maximum display range Sleep Mode The meter automatically enters Sleep mode after 3 minutes non-use. The meter comes out of the Sleep mode when a button is pressed. The Sleep mode is always disabled in the Hold or Autohold mode and when performing an insulation test. NOTE : When the LOCK button is pressed before the TEST button, the test remains active until the LOCK or TEST button is pressed again. 5. Release the TEST button before disconnecting the probes from the circuit under test. Then, the circuit will automatically be discharged through the meter

9 4. SPECIFICATIONS General Specifications Operating Temperature Storage Temperature Temperature Coefficient Relative Humidity Altitude Safety Overload protection Certifications Battery Battery Life Pollution Degree Dimensions Weight : C to 5 C (32 F to 122 F) at <75% R.H. : -2 C to 6 C (-4 F to 14 F) at <8% R.H. : nominal.15 x (specified accuracy) / <18 C or >28 C (<64 F or >82 F), or otherwise specified : % to 1 C to 3 C(5 F to 86 F) % to 3 C to 4 C(86 F to 14 F) % to 4 C to 5 C(14 F to 122 F) : Operating up to 2m Storage 1m : Complies with UL611-1: 3 rd Edition, CAN / CSA-C22.2 No : 3 rd Edition, IEC / EN : 21 ; Overload protaction CAT IV 6V and CAT III : CAT IV 6V and CAT III : UL Listed and CE marked : 6 x AAA batteries (NEDA 24A or IEC LR3) : Meter use 1 hours Insulation Test use Meter can perform at least 1 tests with alkaline batteries at room temperature. These standard tests of 1 V into 1 MΩ with a duty cycle of 5 seconds on and 25 seconds off. : 2 : 178mm x 89mm x 48mm : 44g Electric Specifications AC Voltage Range Input Impedance (nominal) : 1 MΩ, < 1pF Response : Average RMS DC Voltage Resolution V.1 V 4. V.1 V 4. V.1 V 1 V 1 V Range Resolution V.1 V 4. V.1 V 4. V.1 V 1 V 1 V Input Impedance (nominal) : 1 MΩ, < 1pF Resistance Range Resolution Accuracy (5 Hz ~ 6 Hz) (1. % + 8 dgts) Accuracy (.8 % + 1 dgts) Accuracy 4. Ω.1 Ω 4. kω.1 kω 4. kω.1 kω (1. % + 5 dgts) 4. kω.1 kω 4. MΩ.1 MΩ 4. MΩ.1 MΩ (1.5 % + 1 dgts) Input Impedance (nominal) : 1 MΩ, < 1pF Continuity Test Overload Protection 1 Vrms Overload Protection 1 Vrms Overload Protection 4 Vrms Overload Protection Open Circuit Voltage Threshold(Appx.) 4 Vrms <.44 V < 4 Ω 14 15

10 Insulation Test Output Voltage Display Range Resolution Test Current Accuracy 1 V 25 V 5 V 1 V.1 ~ 2. MΩ 2. ~ 1. MΩ.1 ~ 2. MΩ 2. ~ 2. MΩ.1 ~ 2. MΩ 2. ~ 2. MΩ 2 ~ 5 MΩ.1 ~ 2. MΩ 2. ~ 2. MΩ 2 ~ 2 MΩ.1 MΩ.1 MΩ.1 MΩ.1 MΩ.1 MΩ.1 MΩ 1 MΩ.1 MΩ.1 MΩ 1 MΩ.5 1 KΩ.5 25 KΩ.5 5 KΩ.5 1 MΩ Short-Circuit Test Current (nominal) :.5 ma Auto Discharge : Discharge time <1 sec. for C 1 uf Minimum Measurement :.1 MΩ (3 % + 5) (3 % + 5) (3 % + 5) (5 % + 5) (3 % + 5) (5 % + 5) 16