P\N:110401102778
CONTENTS I. Introduction--------------------------------------------- 1 II.Unpacking Inspection--------------------------------- 1 III.Rules for Safe Operation----------------------------2 IV.Electrical Symbols------------------------------------3 V.Appearance Structure--------------------------------4 VI.Display Symbols-------------------------------------- 5 VII.Key Functions and Automatic Shutdown-------6 VIII.Measurement Instructions------------------------ 7 1.
I.INTRODUCTION III.RULES FOR SAFE OPERATION UT204A is a 3 3/4-bit AC/DC digital clamp meter (hereinafter referred to as clamp meter ) with stable performance, safety and reliability. As a special electrician's instrument with excellent performance, machine circuit is designed on the basis of large-scale integrated circuit doubleinteger A/D converter with full-range overload protection circuit and specific appearance design.
Shock or damage of clamp meter. 6. To operate the instrument carefully under DC 60V or AC 30V to avoid electric shock. 7. Do not measure voltage or current which is more than permissible input value. Be sure to place function range switch to the maximum range position if scope of measured value cannot be determined. Be sure to cut off circuit power and discharge all capacitors before ON/OFF measurement of online resistance, diode or circuit.
VI. DISPLAY SYMBOLS (SHOWN IN FIGURE 2) 5 6 7 8 9 10 11 12 4 3 13 14 15 2 1 16 Figure 2 1. AC signal measurement instructions; 2. Negative polarity instructions; 3. DC signal measurement instructions; 4. Instructions of deficient battery charge; 5. Automatic range instructions; 6. Diode testing instructions; 7. ON/OFF detection instructions; 8. Measurement instructions of duty cycle; 9. Data maintenance instructions; 10. Measurement instructions of relative value; 11.
Note: Automatic shutdown function will be cancelled by pressing SELECT key for wake-up under sleeping status. 5.Buzzer Buzzer will beep if pressing any effective function key under any measurement gear. It will not ring if the key is invalid. Buzzer will issue 5 warning voices continuously about 1 minute before automatic shutdown. It also will issue a long-term voice before shutdown. 6.Key validity Note all key operations are valid for any gear.
To select key functions. To set measured DC voltage to initially set value. Initially set automatic range can be set to relavite range by pressing REL key. To connect load. ~ V ~ ºì ºì ºÚ ºÚ Figure 5 Figure 4 To disconnect probe and measured circuit then remove probe from input end after all measurement operations. 3. Resistance measurement ( ) (shown in Figure 5) Warning: Be sure to cut off circuit power and discharge residual charge of all capacitors before load connection. To set knob.
ºì Figure 6 ) (shown in Figure 7) Warning: Be sure to cut off circuit power and discharge residual charge of all capacitors before load connection. To set knob. Please place function knob to measurement gear. To select functions. To select conductance detection by pressing SELECT key; To connect load. ºÚ Figure 7 To gain excellent measured result by separating element from circuit. To disconnect probe and measured circuit then remove probe from input end after all measurement operations. 5.
Hz ºì ºì ºÚ Figure 9 Figure 8 Measurement notice: 1)Be sure to reset by pressing REL key before measurement. 2)Instrument reading will delay for about 30 seconds normally when measuring large capacitance. To disconnect probe and measured circuit then remove probe from input end after all measurement operations. To disconnect probe and measured circuit then remove probe from input end after all measurement operations. 8.Temperature measurement ( ) (shown in Figure 10) To set knob.
1) LCD will display OL if failing to insert temperature sensor into temperature gear. Clamp meter will display current indoor temperature after user inserting temperature sensor. 2) Temperature protection gear of the machine is plug-in resistance (R59) of 1K . Electrified conductor cannot be inserted into input jack during temperature measurement to avoid resistance burnout. 9. DC current measurement ( ) (shown in Figure 11) To set knob. To place function knob to 40A or 600A measurement gear.
Please do not loosen trigger suddenly. As a sensitive device, Hall element will be sensitive to heat and mechanical stress to different extents except magnetic sensitivity. Collision will cause short-term reading variation. Please open the clamp head by pressing trigger then fetch measured conductor by clamp head and loosen trigger slowly until it is closed completely. Please check if measured conductor is in the middle of clamp head or not.
(2)AC voltage ( Range 4.000V 40.00V 400.0V 600V ) (6) Capacitance ( Overload protection Resolution Accuracy 1mV (1%+5) 10mV 600V DC/AC 100mV (1.2%+5) 1V Input impedance: 10M //not less than 100pF Frequency response: 40Hz~400Hz AC conversion type: AC conversion is to guarantee consistence with valid value by sine wave input and correction reading by way of response mode of average value. (3) Resistance ( ) Range 400.0 4.000K 40.00K 400.0K 4.000M 40.
2) Spot K type thermocouple (Ni-Cr~Ni-Si) is only suitable to temperature measurement of less than 230 . Rod type temperature sensor shall be used for temperature measurement of more than 230 . (9) AC current ( (9) DC current ( Note: Current measurement function must be fulfilled between 0 and 40 . Frequency response: 50Hz~60Hz; Instable or incorrect inductive reading with less than 10 words may be displayed in AC current gear and it will not influence measurement result.
Figure 13 2: Battery installation or replacement 1 6F22 9V battery shall be supplied for the product. Please install or replace the battery by following sequence: a. Please remove testing rod in the input end during shutdown. b. To let panel face downwardly, loosen screws on the cell box, extract cell cover then remove cell box. c. To remove old battery from cell box for installation of new battery according to polarity instructions. d. Please use the same model of battery.
