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® 3.10 STARTING CURRENT OR OVERCURRENT (T MEASUREMENT ....................27 3.11 FREQUENCY MEASUREMENT (H ) ............27 3.11.1 Frequency Measurement (V) ............27 3.11.2 Frequency Measurement (A) ............28 3.12 TEMPERATURE MEASUREMENT ............29 3.12.1 Measurement without External Sensor ......... 29 3.12.2 Measurement with External Sensor ..........
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Thank you for purchasing a Model 203 Clamp-on Meter. For best results from your instrument and for your safety, read the enclosed operating instructions carefully and comply with the precautions for use. These products must be only used by qualified and trained users.
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PRECAUTIONS FOR USE This device complies with safety standards IEC-61010-1 and 61010-2-032 for voltages of 1000V in category IV at an altitude of less than 2000m, indoors, with a degree of pollution not exceeding 2. These safety instructions are intended to ensure the safety of persons and proper operation of the device.
Save the damaged packing container to substantiate your claim. ORDERING INFORMATION Clamp-on Meter Model 203 ............Cat. #2139.12 Includes set of 2, 5 ft. (1.5m) needle tip color-coded leads with...
1 PRESENTATION The Clamp-on Meter Model 203 is a professional electrical measuring instrument that combines the following functions: Current measurement ® Measurement of InRush current / overcurrent (True InRush Voltage measurement Frequency measurement Continuity test with buzzer ...
ROTARY SWITCH The rotary switch has six positions. To access the functions, set the switch to the desired function. The functions are described in the table below. Figure 2: Function Rotary Switch Item Function See § Adapter function 3.13 Temperature measurement (°C/°F) 3.12 AC, DC current measurement (A) Continuity test...
FUNCTION BUTTONS Figure 3: Function Buttons Item Function See § Holds the last value on the display Zero correction A 3.9.2 Lead resistance compensation in the continuity and 3.6.1 ohmmeter functions Selects the type of measurement and configuration functions (AC, DC) Enables/disables display backlighting Activation of ΔREL mode –...
DISPLAY Figure 4: Display Item Function See § Low battery indication Mode selection display Active measurement value and unit display 3.5 to 3.12 Display of the MAX/MIN modes Type of measurement (AC or DC) Temperature unit display 3.4.4 Selected resistance measurement display 1.3.1 Display Symbols Symbol...
Ampere °C/°F Temperature unit Celsius or Fahrenheit Percentage Ω Milli- prefix Kilo- prefix Lead resistance compensation Continuity test Diode test Auto Power Off disabled Low battery indicator 1.3.2 Measurement Capacity Exceeded (OL) The OL (Over Load) symbol is displayed when the display capacity is exceeded. TERMINALS The terminals are used as follows: Figure 5: Terminals...
2 BUTTONS The buttons respond differently to short, long, and sustained presses. keys provide additional functions as well as the detection and acquisition of parameters complementary to the basic measurements. Each of these buttons can be used independently of the others or in •...
(YELLOW) BUTTON (SECOND FUNCTION) This button is used to select the type of measurement (AC, DC) and the second functions marked in yellow next to the relevant positions of the switch. It can also be used to modify the default values in the configuration mode (see §...
BUTTON 2.4.1 Normal Mode This button activates the detection of the MAX and MIN values of the measurements made. Max and Min are the extreme mean values in DC and the extreme RMS values in AC. NOTE: In this mode, the Auto Power Off function of the device is automatically disabled.
2.4.2 The MAX/MIN Mode + Activation of the HOLD Mode Successive presses on Function Displays the MAX/MIN values detected before the button was pressed. short When the button is pressed, the last value is held on the display. NOTE: The HOLD function does not interrupt the acquisition of new MAX, MIN values ®...
BUTTON This button is used to display the frequency measurements of a signal. NOTE: This button is not functional in the DC mode. 2.5.1 Normal Mode Successive Function presses on Displays: - The frequency of the signal measured - The present voltage (V) or current (A) measurement 2.5.2 The Hz Function + Activation of the HOLD Mode...
BUTTON This button is used to display and store the reference value in the unit of magnitude measured, or to display the differential and relative values, in %. Successive Function presses on Enters the ΔREL mode, to store, then display the reference value.
3 USE INSTALLING THE BATTERY Insert the battery supplied with the device as follows: Using a screwdriver, unscrew the battery compartment cover (item 1) from the back of the housing. Insert the 9V battery supplied (item 2), observing polarities. Close the battery compartment cover and screw it onto the housing. Figure 6 : Battery Compartment TURNING THE CLAMP-ON METER ON With the rotary switch set in the OFF position, turn the switch to the...
CONFIGURATION As a safety measure, and to avoid repeated overloads on the inputs of the device, configuration operations should only be performed when the device is disconnected from all dangerous voltages. 3.4.1 Configuring the Maximum Resistance for Continuity To configure the maximum resistance allowed for a continuity: With the switch in the OFF position, hold the (yellow) button down while turning the switch to...
2. To change the threshold, press the (yellow) button. The value flashes; each press on the (yellow) button displays the next value. To record the chosen threshold, apply a long press (>2s) on the (yellow) button. A confirmation beep is emitted. When the desired value is displayed, turn the switch to another setting.
3.4.6 Default Configuration To reset the clamp-on meter to its default parameters (factory configuration): In the OFF position, hold the (yellow) button down while turning the switch to , until the "full screen" display ends and a beep is emitted. The "rSt"...
CONTINUITY TEST Warning: Before performing the test, make sure that the circuit is off and all capacitors have been discharged. Set the switch to ; the symbol is displayed. Connect the black lead to the COM terminal and the red lead to the "+" terminal.
RESISTANCE MEASUREMENT Ω Warning: Before making a resistance measurement, make sure that the circuit is off and all capacitors have been discharged. Set the switch to and press the (yellow) button. The Ω symbol is displayed. Connect the black lead to the COM terminal and the red lead to the "+" terminal.
The measured value is displayed on the screen. Reverse the leads on the diode and repeat the test. CURRENT MEASUREMENT (A) The jaws are opened by pressing the trigger on the body of the meter. The arrow on the jaws of the clamp-on meter (see the diagram below) should point in the presumed direction of current flow, from the generator to the load.
3.9.2 DC Measurement Set the switch to and select DC if the display does not indicate "0"; the DC zero must be corrected first. Step 1: Correction of DC Zero Important: The clamp must not be closed on the conductor during the DC zero correction.
® 3.10 STARTING CURRENT OR OVERCURRENT (True InRush MEASUREMENT To measure a starting current or overcurrent, proceed as follows: Set the switch to , correct the DC zero (see §3.9.2), then clamp the jaws around the conductor to be measured. button.
The measured value is displayed on the screen. 3.11.2 Frequency Measurement (A) Set the switch to and press the button. The Hz symbol is displayed. Select AC by pressing the (yellow) button until desired choice is reached. Clamp the jaws around the conductor to be measured. The measured value is displayed on the screen.
3.12 TEMPERATURE MEASUREMENT 3.12.1 Measurement without External Sensor Set the switch to The temperature (blinking) displayed is the internal temperature of the device. It will be equal to the ambient temperature after a sufficiently long thermal stabilization time (at least one hour). 3.12.2 Measurement with External Sensor The device measures the temperature using a K-thermocouple.
3.13 ADAPTER FUNCTION MEASUREMENT This function makes it possible to connect any adapter or sensor that converts a measured electrical or physical quantity into a voltage (either DC or AC). A direct, immediate reading is obtained without applying a conversion factor. The measurement mode, AC or DC (the default), must be chosen manually using the yellow button.
4 SPECIFICATIONS REFERENCE CONDITIONS Quantities of Influence Reference Conditions Temperature: 23°C ±2°C Relative humidity: 45% to 75% Supply voltage: 9.0V ±0.5V Frequency range of the applied signal: 45 to 65Hz Sine wave: pure Peak factor of the applied alternating signal: √2 Position of the conductor in the clamp: centered...
4.2.2 AC Voltage Measurement Measurement 600 to 1000V RMS 0.15 to 59.99V 60.0 to 599.9V range 1400V peak (1) Specified measurement 0 to 100% of the measurement range range (2) 0.15 to 5.99V ± (1% R + 10cts) Accuracy ± (1% R +3cts) 6.00 to 59.99V ±...
4.2.4 AC Current Measurement Measurement 0.15 to 59.99A 60.0 to 599.9A 600A Range Specified Measurement 0 to 100% of the measurement range Range Accuracy ± (1% R + 10cts) ± (1% R +3cts) Resolution 0.01A 0.1A Note (1) Bandwidth in AC = 3kHz Note (2) In AC, any value between zero and the min.
4.2.7 Resistance Measurement 0.0 to 600 to 6.00 to Measurement Range 599.9Ω 5999Ω 59.99kΩ Specified Measurement 1 to 100% of the 0 to 100% of the Range measurement range measurement range Accuracy ± (1% R +5cts) Resolution 0.1Ω 1Ω 10Ω Open-circuit Voltage ≤...
4.2.9.2 Current Measurement Range (1) 5.0 to 599.9Hz 600 to 2999Hz Specified Measurement 1 to 100% of the 0 to 100% of the Range measurement range measurement range Accuracy ± (0.4% R + 1ct) Resolution 0.1Hz Note (1) In MAX/MIN mode, the operating range is limited to 1kHz. If the level of the signal is too low (<10% of the range, or V<3V or I<3A) or if the frequency is less than 5Hz, the device cannot determine the frequency and displays "----".
4.2.11 Adapter Function Measurement 4.2.11.1 In DC mode Measurement Range (1) 0.0 to 599.9mV 0.60 to 5.999V Specified Measurement Range (2) 0 to 100% of the measurement range Accuracy 1% R ±3cts Resolution 0.1mV Input Impedance 10MΩ 4.2.11.2 In AC mode Measurement Range (1) 5.0 to 599.9mV 0.600 to 5.999V...
ENVIRONMENTAL CONDITIONS Conditions Operating Storage Temperature -4° to +131°F -40° to +158°F (-20° to +55°C) (-40° to +70°C) Relative Humidity (RH) ≤90% up to 131°F (55°C) ≤90% up to 158°F (70°C) MECHANICAL SPECIFICATIONS Housing Rigid polycarbonate shell with molded elastomer covering Polycarbonate Jaws Opening: 1.34"...
5 MAINTENANCE WARNING Remove the test leads on any input before opening the case. • • Do not operate the clamp-on meter without a battery case cover. To avoid electrical shock, do not attempt to perform any servicing • unless you are qualified to do so. To avoid electrical shock and/or damage to the instrument, do not get •...
LIMITED WARRANTY The Model 203 is warranted to the owner for a period of three years from the date of original purchase against defects in manufacture. This limited ® warranty is given by AEMC Instruments, not by the distributor from whom it was purchased.