#61-492 1 490 Series Industrial Grade Multimeter ~Hz MIN/MAX 7 8 PEAK HOLD 10 14 13 9 12 11 2 3 Data Acquisition 4 ~Hz MIN/MAX PEAK HOLD 5 2 6 Data Acquisition 2 1. LCD Display 2. Rotary Function Switch 3. COM Input Terminal 4. VHz Input Terminal 5. mA Input Terminal 6. A Input Terminal 7. Backlight Button 8. ~Hz Button 9. Peak H Button 10. Range Button 11. Blue Switch Button 12. Min/Max Button 13. REL Button 14. Hold Button 2 WARNING! 1. DO NOT UNDER ANY CIRCUMSTANCES EXCEED THESE RATINGS: - Voltage is not to exceed 1000 Volts. - Resistance, Capacitance, Logic and Continuity functions are not to be performed on circuits capable of delivering greater than 600 Volts. - Current measurements are not to be performed on circuits capable of delivering greater than 500 Volts 2. To avoid electrical shock hazards and/or damage to the meter: - Do not exceed the voltage ratings for the meter. Use caution when measuring voltage. - Do not use during electrical storms. AC power sources with inductive loads or electrical storms may result in high voltage. High energy transients can damage meter and present a dangerous shock hazard. - Turn off power to the circuit or device being measured before taking resistance and capacitance measurements. Fully discharge all capacitors before measuring. 3. Ensure meter is in proper working order before using. Visually inspect meter for damage. Performing a continuity check can verify proper operation. If the meter reading goes from overload to zero, this typically means the meter is in proper working order. 4. Visually inspect leads for damage before using. Replace if insulation is damaged or leads appear suspect. 5. Never ground yourself when taking electrical measurements. Do not touch exposed metal pipes, outlets, fixtures etc. Keep your body isolated from ground by using dry clothing, rubber shoes, mats, or any other approved insulating material. Keep your fingers behind the finger guards on the probes. Work with others. 6. Before beginning all unknown measurements, set meter to highest possible range. 7. Before breaking a circuit for testing, turn off the power to the circuit. When disconnecting from a circuit, disconnect the hot lead first, then the common lead. 8. Disconnect the meter from the circuit before turning off any indicator, including motors, transformers, and solenoids. 3 Function Buttons The meter beeps once for every valid key-press, and beeps twice for every invalid key-press. Backlight Button · The light button is used to turn the backlight on or off. ~ Hz Button · Pressing the ~Hz button in AC voltage or current mode enters frequency counter mode with automatic range selection. · Pressing range switch in VAHz mode also changes the full scale range of the original voltage or current mode after VAHz mode is cancelled. Peak Hold Button · The peak hold button toggles the peak hold function on or off. · The precision of peak hold measurement can be enhanced by calibration. · Peak hold can be calibrated by pressing the peak hold button for > 2 seconds. "caL will be shown on the main display. · Press the peak hold button to toggle between PMAX and PMIN. · Press peak hold for > 2 seconds to escape the peak hold measurement. Range Button · Pressing the range button changes the unit to manual ranging and toggles between the ranges of the measurement function. · Pressing the range button for > 2 seconds returns the unit to auto ranging. Blue Button · The blue button toggles between the black and blue functions on the dial. 4 MIN MAX Button · The MIN/MAX button toggles between the stored minimum, and maximum values. · Pressing the button the first time displays the minimum value, the second time displays the maximum value, and pressing the third time displays the actual measurement with the MIN and MAX annunciators blinking. · Pressing hold while in this function stops the meter from updating the minimum and maximum values. · To escape this function, press the MIN/MAX button for 2 seconds. REL Button · This function displays the differential between the actual measurement and the last value displayed before pressing the REL button. · Pressing the hold button while in this function stops the display from updating the new differential value. · Pressing the REL button for >2 seconds enables the recall function. Hold Button · Pressing the hold button stops the meter from updating the LCD display. · Enabling the hold function in normal measurement will switch the meter from auto-ranging to manual ranging, but will not change the full scale range. The meter can be returned to auto-ranging by pressing the range, blue or hold button. · When the hold button is used in conjunction with the peak hold, MIN/MAX, or RELr functions, the hold function must be released by pressing the button prior to returning to exiting the function. Auto Power Off Feature · If the meter is idle for more than 30 minutes, power is automatically turned off. · The APO annunciator on the display indicates that this feature is enabled. · To disable this feature, power up the meter while pressing the MIN/MAX, REL , or Hold button. · The meter will give an audible indication 15 seconds prior to powering down the meter. · Power can be restored, with the display in the saved state by pressing any of the buttons. · Power can also be restored by changing the rotary switch. Overload Protection Function VAC & VDC AAC & ADC Ohms () Diode Continuity Overload Protection 1000V 1A/500V 10A/500V 600VAC/600VDC 600VAC/600VDC 600VAC/600VDC Unit of Measure Multipliers For your reference, the following symbols are often used to make measurement easier: Verbal Multiplier Symbol M mega x 1,000,000 K kilo x 1,000 m milli ÷ 1,000 µ micro ÷ 1,000,000 5 6 AC Volts Circuit Connection: DC Volts Circuit Connection: ~Hz MIN/MAX PEAK HOLD ~Hz MIN/MAX PEAK HOLD Data Acquisition Data Acquisition 2 2 Range 400mV 4V 40V Resolution Max Display 0.1mV 400.0 1mV 10mV 4.000 40.00 Accuracy +(1.5% +8) 40Hz ~ 60Hz +(1.0% +5) 40Hz ~ 500Hz +(0.5% +5) 50Hz ~ 60Hz +(1.0% +5) 40Hz ~ 1kHz Range 400mV 400mV 4V 40V 400V 1000V Resolution Max Display 0.1mV 400.0 100µV 400.0 1mV 4.000 10mV 40.00 100mV 400.0 1V 1000 Accuracy +(1.5% +8) +(0.3% +2) +(0.1% +2) 400V 750V 100mV 1V 400.0 750 To Measure AC Voltage: 1. The Plug the Black test lead into the COM port and the Red test lead into the VHz port. 2. Set the rotary switch to the V position. 3. Push the blue button until AC is shown on the display. 4. Connect the meter in parallel with the load or circuit. 5. Measure AC Voltage Input Impedance: 10M less than 100PF To Measure DC Voltage: 1. Plug the Black test lead into the COM port and the Red test lead into the port. 2. Set the rotary switch to the V position. 3. Push the blue button until DC is shown on the display. 4. Connect the meter in parallel with the load or circuit. 5. Measure DC Voltage Input Impedance: 10M (over 1000M in 400mV range) 7 8 AC Current Circuit Connection: DC Current Circuit Connection: ~Hz MIN/MAX PEAK HOLD ~Hz MIN/MAX PEAK HOLD Data Acquisition Data Acquisition 2 2 Range Resolution Max Display Accuracy 40mA 400mA 10A 1µA 0.1mA 10mA 40.00 400.0 10.00 Voltage Burden +(1.0% +5) 300mV max 3V max +(2.0% +5) 3V max Range Resolution Max Display Accuracy 40mA 400mA 10A 10µA 0.1mA 10mA 40.00 400.0 10.00 Voltage Burden +(0.4% +2) 300mV max +(0.5% +2) 3V max +(1.0% +3) 3V max To Measure AC Current: 1. Plug the Black test lead into the COM port and the Red test lead into the mA or A port. 2. Set the rotary switch to the mA or A position. 3. Push the blue button until AC is shown on the display. 4. Connect the meter in series with the load or circuit. 5. Measure AC Voltage. Frequency Response: 40Hz ~ 1kHz Overload Protection: 1A, 600V IR 10kA fuse for mA input 15A, 600V IR 100kA fuse for A input To Measure DC Current: 1. Plug the Black test lead into the COM port and the Red test lead into the mA or A port. 2. Set the rotary switch to the mA or A position. 3. Push the blue button until DC is shown on the display. 4. Connect the meter in series with the load or circuit. 5. Measure DC Voltage. Overload Protection: 1A, 600V IR 10kA fuse for mA input 15A, 600V IR 100kA fuse for A input 9 10 Frequency/RPM Circuit Connection: Resistance (Ohms) Circuit Connection: ~Hz MIN/MAX PEAK HOLD ~Hz MIN/MAX PEAK HOLD Data Acquisition Data Acquisition 2 2 Range 4kHz/40kRPM Resolution 1Hz/30RPM Max Display Sensitivity Accuracy 4.000/40.00 150mV 2.0 Hz 1.5V < 20 Hz Frequency: 0.01% +1 RPM: 0.01% + 10 40kHz/400kRPM 400kHz/4MRPM 4MHz/40MRPM 40MHz/400MRPM 10Hz/300RPM 100Hz/3KRPM 1kHz/30KRPM 40.00/400.0 400.0/4.000 4.000/40.00 300mV 1V *** Range 400 4k 40k 400k 4M 40M Resolution 0.1 1 10 100 1K 10K Max Display 400.0 4.000 40.00 400.0 4.000 40.00 Accuracy ±(0.7% +3) ±(0.4% +2) ±(0.6% +3) ±(1.5% +5) 10kHz/300KRPM 40.00/400.0 400MHz/4000MRPM 100kHz/3MRPM 400.0/4000 *This spec is not guaranteed. To Measure Frequency: 1. Plug the Black test lead into the COM port and the Red test lead into the VHz port. 2. Set the rotary switch to the HZ RPM position. 3. For RPM, Push the blue button until RPM is shown on the display. 4. Connect the meter in parallel with the load or circuit. 5. Measure Frequency or RPM. Overload Protection: 600V 11 To Measure Resistance: 1. Turn the power off to the circuit or device that is to be measured and discharge all capacitors before attempting a measurement. 2. Plug the Black test lead into the COM port and the Red test lead into the VHz port. 3. Set the rotary switch to the position. 4. For correct reading, ensure that the device being tested contains no voltage. 5. Press the range button to select the proper range of the meter. Overload Protection: 600V Open Circuit Voltage: -1.3V (approx.) 12 Capacitance Circuit Connection: Diode Testing Circuit Connection: ~Hz MIN/MAX PEAK HOLD ~Hz MIN/MAX PEAK HOLD Data Acquisition Data Acquisition 2 2 Range 4nF 40nF 400nF 4µF 40µF 400µF 4mF 40mF Resolution 1pF 10pF 100pF 1nF 10nF 100nF 1µF 10µF Max Display Accuracy 4.000 +(3.0% +10) 40.00 +(3.0% +5) 400.0 4.000 40.00 400.0 4.000 +(5.0% +20)* 40.00 Function Resolution Accuracy Max. Test Max. Open Current Circuit Voltage 1.5mA 3V 1mV +(1.5% +5) * For 0.4V to 0.8V. Diode Check: 1. Turn off power to the device or circuit that is being tested and discharge all capacitors. 2. Plug the Black test lead into the COM port and the Red test lead into the VHz port. 3. Set the rotary switch to the position. 4. Press the blue button until is shown on the display 5. Connect the test leads to the diode. Normally the forward voltage drop of a good silicone diode is shown between 400V and 0.9V. If the diode under test is defective, "000" (short circuit) or "OL" (non-conductive) is displayed. Overload Protection: 600V max * In these two ranges the reading may be rolling within specification To Measure Capacitance: 1. Turn the power off to the circuit or device that is to be measured and discharge all capacitors before attempting a measurement. 2. Plug the Black test lead into the COM port and the Red test lead into the VHz port. 3. Set the rotary switch to the position. 4. Connect the leads to the circuit to be measured. 5. Measure Capacitance In order to ensure the best accuracy in measurement of low capacitance, open the test leads before measurement and memorize the test probe capacitance. It is necessary to subtract the capacitance of the test probes themselves, or use the relative mode to compensate for the test leads. Overload Protection: 600V 13 14 Continuity Check Circuit Connection: PEAK Hold Measurements ~Hz MIN/MAX PEAK ~Hz HOLD MIN/MAX PEAK HOLD Data Acquisition Data Acquisition 2 2 To Verify Continuity: 1. A continuity test ensures that all circuit connections are intact. 2. Plug the Black test lead into the COM port and the Red test lead into the port. 3. Set the rotary switch to the position. 4. Press the blue button until is shown in the display. 5. Connect the test leads to the circuit to be measured. The buzzer will sound if the resistance of the circuit measured is lower than 30. Function Range DC Voltage 4V 40V 400V 1000V DC Current 400mA 10A 40mA 400mV Accuracy unspecified +(1.5% +300) +(1.5% +60) Function Range Accuracy AC Voltage 4V 40V 400V 750V +(1.5% +300) +(1.5% +60) 400mV unspecified +(3% +60) AC Current 40mA 400mA +(3% +60) +(1.5% +60) 10A +(1.5% +60) Note: With zero calibrated before measurement 4V ranges specify readings above 10% of full scale Current ranges specify reading <90% of full scale Noise generating fields may affect intervals 15 16 Data Acquisition Function 1. Auto Power Off (APO) The APO sign on the LCD panel indicates the meter is working in the Auto Power Off mode. If the meter idles for more than 30 minutes, the meter automatically turns the power off. When this happens, the state (non-logic measurement) of the ...