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Model UT57: OPERATING MANUAL
Table of Contents
Introduction
UT57 is one type of UNI-T brand new UT50 series
Multimeters with 4 1/2 digits, which has special
and steady function and is a highly reliable hand
-held measuring instrument. The design of the
Meter is the use of CMOS technology with large
scale of integrated circuit using double integrated
A/D tranducer as its core and has full ranges overload
protection.The Meter can measure DC current,
AC current, DC Voltage, AC Voltage, Resistance,
Capacitance, Diode, Frequency and Continuity
Beeper. AC Voltage and Current measurement
is TRMS and has the function of AC+DC/AC which
is an ideal tool for users.
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Summary of Contents for UNI-T UT57
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Page 1: Table Of Contents
F. Using Holster G. Using Strap Introduction UT57 is one type of UNI-T brand new UT50 series Multimeters with 4 1/2 digits, which has special and steady function and is a highly reliable hand -held measuring instrument. The design of the... - Page 2 Model UT57: OPERATING MANUAL Safety Rules l Use the Meter only as specified in this manual, otherwise the protection provided by the Meter may be impaired. l The meter is designed to withstand the stated Max. voltages. If it is not possible...
- Page 3 Model UT57: OPERATING MANUAL l Make sure to use new fuses with proper rating to instead of bad fuses. l To avoid electric shock or damages, do not apply more than 1000V between the “COM” terminals and “ ”earth ground.
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Page 4: Your Meter's Feature
Model UT57: OPERATING MANUAL A. Your Meter’s Feature l 21 ranges. l Liquid Crystal Display, digit’s height is 21mm . l Overload display “l”. l Maximum display “19999”. l Full range symbol display. l Full range overload protection. l Auto-Power Off. -
Page 5: Specifications
Model UT57: OPERATING MANUAL B. Specifications Accuracy is specified for one year after calibration,at operating temeratures 23 ,with relative humidity at<75%.Accuracy specifications take the form of: (a% readings +n digits) B-1 Direct Current Voltage (DC Voltage) B-2 Alternate Current Voltage (AC Voltage) - Page 6 Model UT57: OPERATING MANUAL B-3 Direct Current Current (DC Current) B-4 Alternate Current Current (AC Current)
- Page 7 Model UT57: OPERATING MANUAL B-5 Resistance Range Resolution Accuracy (0.1% +5) 0.01 (0.1% +2) 200K (0.3% +10) Overload protection: All ranges are 230VDC or AC RMS. Voltaeg at Open Circuit: About 3V Caution: At 200 range, short the test lead first to obtain the resistance value of the test leads.
- Page 8 Model UT57: OPERATING MANUAL 2-7 Frequency Range Resolution Accuracy 20kHz (1.0% +20) 200kHz 10Hz Input sensitivity: 200mV rms, Max Input Scope: 30V rms. Overload protection: 230V rms 2-8 Diode and Continuity Beeper Range Remark Measuring Condition Forward DC Current abt...
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Page 9: Making Measurements
Model UT57: OPERATING MANUAL C. Making Measurements Caution (1) If there is no display or “ ” is shown on the LCD when the Meter is switched on, replace the battery ASAP. (2) Never exceed the maximum input voltage or current limits shown besides the input jacks “... - Page 10 Model UT57: OPERATING MANUAL C-1 Measuring DC Voltage Button should not be pressed down and LCD should not display “AC” Symbol. 2) Connect the black test lead to “COM” jack and red test lead to “ V ” jack. 3) Set the rotary switch to “ V ”...
- Page 11 Model UT57: OPERATING MANUAL 2) Connect the black test lead to “COM” jack and red test lead to “V” jack. 3) Set the rotary switch to “V ” 4) Connect the test leads across with the object to be measured.
- Page 12 Model UT57: OPERATING MANUAL 2) If “1” is shown on the LCD, it means the Meter is overloaded, then set the measuring range to higher. 3) “ ” means the maximum input current is 200mA, overload will cause the burn of fuse. 10A range...
- Page 13 Model UT57: OPERATING MANUAL C-5 Measuring Resistance 1) Connect the black test lead to “COM” jack and red test lead “ ”jack. 2) Set rotary switch to “ ” 3) Connect the test leads across with the object to be measured.
- Page 14 Model UT57: OPERATING MANUAL C-7 Measuring Frequency 1) Connect red test lead to “Hz” jack and black test lead to “COM” jack. 2) Set the rotary switch to “kHz” 3) Connect the test leads across with the object being measured. LCD appears the frequency value.
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Page 15: Maintenance
Model UT57: OPERATING MANUAL C-10 Auto-Power Off function 1) The Meter equips with auto-power off function. It will be in a sleep mode when it has been oprated for 30 minutes. Power will be automatically cut off. 2) Press the on/off switch two times to power up again. -
Page 16: Using Holster
Model UT57: OPERATING MANUAL F. Using Holster Three different ways to use holster: 1) Set holster parallel on the table, do not open the tilt stand (see diagram 1) 2) Set holster in a small angle on the table, tilt... - Page 17 Model UT57: OPERATING MANUAL Manufacturer: UNI-TREND TECHNOLOGY(DONG GUAN)LIMITED Address: Dong Fang Da Dao, Bei Shan Dong Fang Industrial Development District, Hu Men Town, Dong Guan City, Guang Dong Province, China Headquarters: Uni-Trend International Limited Address: Rm901, 9/F, Nanyang Plaza 57 Hung To Road...