加拿大外贸
1、怎么使用万用表去检修(1)How to Measure Amperage
怎么去测量电流值
(2)Make an open circuit at the place where the current is to be measured.
在需要测量电流之处形成一条开路。
(3)Select the AC current (A ˜) or DC current (A-) function on the meter.
在万用表上选择交流（A ˜）或直流（A-）档位。
(4)Turn on the power in the circuit being measured.
打开被测电路的电源。
(5)Put the probes of the meter across the open circuit to measure the amperage.
将万用表的表笔串联在电路的开路位置，测量电流。
(6)Read the displayed measurement.
读取显示的测量值。
(7)How to Measure Voltage
怎么去测量电压值
(8)Select the AC voltage (V ˜) or DC voltage (V-) function on the meter.
在万用表上选择交流电压（V ˜）或直流电压（V-）档位。
(9)Turn on the power in the circuit being measured.
打开被测电路的电源。
(10)Touch the positive (+) probe of the multimeter to the terminal or pin that is being measured for voltage. Touch the other probe to a clean, unpainted metal surface that is connected to battery ground or to the negative (-) post of the battery.
将万用表的正极（+）表笔与需要测量电压的端子或触针接触。将另一支表笔接触与蓄电池接地或蓄电池负极接线柱连接的干净的、未喷漆的金属表面。
(11)Read the displayed measurement.
读取显示的测量值。
(12)How to Measure Resistance
怎么去测量电阻值
(13)Select the resistance function on the meter.
选择万用表的欧姆档。
(14)Verify that there is no power to the components being tested.
核实需要测量电阻值的部件没有通电。
(15)Disconnect both ends of the circuit or component to be measured. Touch one probe to one end of the circuit or component terminal. Touch the other probe to the other end of the circuit or the other component terminal.
断开待测电路或部件的两端。一支表笔接触电路或部件端子的一端。另一支表笔接触电路的另一端或其它部件的端子。
(16)Read the displayed measurement.
读取显示的测量值。
(17)How to Find the Internal Resistance of the Meter
怎样得到万用表的内阻
(18)It is important to know the internal resistance of the meter when measuring small resistances. To measure small resistances accurately, the internal resistance of the meter must be subtracted from the measured resistance.
测量电阻值较小的装置时，需要知道万用表的内阻。要想使测量的小电阻值精确，必须从测量的电阻值中减去万用表的内电阻。
(19)Turn the meter ON.
打开万用表。
(20)Set the meter to the lowest ohm scale.
将万用表设置到最低的欧姆档。
(21)Measure the resistance of the meter by touching the test probes together and reading the resistance value (including special test leads, if they are being used).
使万用表的表笔互相接触并读取电阻值，这就是万用表的内阻（如果使用测试导线，该值中还包括专用测试导线的电阻）。
(22)ZERO the meter or subtract this value when taking measurements.
在测量之前，使万用表归零或测量时减去这个内阻。
(23)How to Test for Continuity
怎么测量导通性
(24)Select the continuity function on the meter (usually marked with a diode symbol).
选择万用表的导通性测试档（通常标有二极管的符号）。
(25)Make sure there is no power to the component being measured.
核实需要测量导通性的部件没有通电。
(26)Disconnect both ends of the circuit or component to be measured. Touch one probe to one end of the circuit or component terminal. Touch the other probe to the other end of the circuit or the other component terminal.
断开待测电路或部件的两端。一支表笔接触电路或部件端子的一端。另一支表笔接触电路的另一端或其它部件的端子。
(27)Read the displayed measurement.
读取显示的测量值。
(28)The meter will beep if the resistance is less than about 150 ohms. If there is an open circuit, the meter does not beep.
如果电阻值小于 150 欧姆，万用表将发出蜂鸣声。如果存在开路，万用表不会发出蜂鸣声。
(29)Short Circuit to Ground – Check
检查是否对地短路
(30)Short circuit to gr ound is a condition where a connection from a circuit to ground exists when it is not intended.
对地短路是指不允许的电路与地线之间存在连接的状况。
(31)The procedure for checking for a short circuit to ground is as follows:
检查是否对地短路的步骤如下：
(32)Turn keyswitch OFF.
将钥匙开关转到”OFF”（断开）位置。
(33)Disconnect the connectors that are to be tested.
断开需要测试的接头。
(34)When testing a sensor, only the sensor connection is required to be disconnected.
测试传感器时，只需断开传感器接头。
(35)When testing a harness, the harness connector at the ECM and the connector at the sensor or multiple sensors should be disconnected.
测试线束时，ECM 的线束接头和传感器上的接头或多个传感器都需断开。
(36)Identify the pins that need to be tested.
确定需要测试的触针。
(37)Inspect the connector pins.
检查接头的触针。
(38)Adjust the multimeter to measure resistance.
调整万用表以便测量电阻
(39)Touch one of the multimeter probes to the correct pin to be tested.
将万用表的一支表笔接触待测试的正确触针。
(40)Touch the other probe of the multimeter to a clean, unpainted surface on the engine block ground.
将另一根万用表表笔接触清洁的、未喷漆的发动机缸体接地的表面。
(41)Read the value on the multimeter display.
读取万用表显示的数值。
(42)Short Circuit from Pin to Pin – Check
检查触针与触针之间是否短路
(43)Short circuit from pin to pin is a condition in which an electrical path exists between two pins where it is not intended to exist.
触针之间的短路指不允许的触针与触针之间存在电气连接的状况。
(44)The procedure for checking short circuit from pin to pin is as follows:
检查触针与触针之间是否短路的步骤如下
(45)Turn keyswitch OFF.
将钥匙开关转到”OFF”（断开）位置。
(46)Disconnect the connector that are to be tested.
断开需要测试的接头。
(47)Identify the pins that are to be tested.
确定将要测试的触针。
(48)Adjust the multimeter to measure resistance.
调整万用表以便测量电阻。
(49)Touch one of the multimeter probes to the correct pin to be tested on the harness side of the connector.
将万用表的一支表笔连接到接头线束侧的正确触针上。
(50)Touch the other probe of the multimeter to all other pins on the harness side of the connector.
使万用表的另一支表笔与该接头线束侧的所有其它触针相接触。
(51)Voltage Checking
电压检查
(52)Voltage check is a procedure to measure the difference in voltage potential between two points.
电压检查是测量两点之间的电位差。
(53)The procedure for checking voltage is as follows:
电压检查的过程如下：
(54)Disconnect the connectors that are to be tested.
断开需要测试的接头。
(55)Turn keyswitch ON.
将钥匙开关转到”ON”（接通）位置。
(56)Identify the pins that are to be tested.
确定将要测试的触针。
(57)Adjust the multimeter to AC voltage (V ˜) or DC voltage (V-).
将万用表调整至交流电压（V ˜）或直流电压（V-）档位。
(58)Touch one of the multimeter test probes to the correct lead to be tested.
用万用表的一支表笔与待测试的导线相接触。
(59)Touch the other multimeter probe to a clean, unpainted surface on the engine block or to the appropriate return pin.
用万用表的另一支表笔接触干净的未油漆的发动机缸体表面或回路触针
(60)Polarity Check
极性检查
(62)A battery will be used as an example to check polarity of a circuit.
用蓄电池作为例子来检查电路的极性。
(63)The terminals of a battery are marked for polarity. The multimeter displays the voltage difference of the positive (+) probe (red) to the negative (-) probe (black).
蓄电池的端子上都标有极性。万用表可以显示正极表笔（红色）和负极表笔（黑色）之间的电位差。
(64)Resistance Check – Coil
线圈电阻检查
(65)Turn keyswitch OFF.
将钥匙开关转到”OFF”（断开）位置。
(66)Disconnect the harness from the coil.
从线圈上断开线束。
(67)Adjust the multimeter to measure resistance.
调整万用表以便测量电阻。
[ 本帖最后由 averyking 于 2010-9-28 08:08 编辑 ]
评论
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