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User’s Manual                                                                                                                                                                 Smart Digital Power Meter 

Instruments.uni-trend.com

                                                                                                                                                                                     

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Preface 

Thank you for purchasing this brand new UNI-T product. In order to use this product safely and correctly, 
please read this manual thoroughly, especially the safety notes. 
 
After reading this manual, it is recommended to keep the manual at an easily accessible place, preferably 
close to the device, for future reference. 
 

Copyright Information 

Copyright is owned by Uni-Trend Technology (China) Limited. 

UNI-T products are protected by patent rights in China and foreign countries, including issued and pending 

patents. 

UNI-T reserves the rights to any product specification and pricing changes. 

UNI-T reserves all rights. Licensed software products are properties of Uni-Trend and its subsidiaries or 

suppliers, which are protected by national copyright laws and international treaty provisions. Information in 

this manual supersedes all previously published versions. 
UNI-T is the registered trademark of Uni-Trend Technology (China) Co., Ltd. 

Warranty Service 

UNI-T warrants that the product will be free from defects for one year. If the product is re-sold, the warranty 
period will be from the date of the original purchase from an authorized UNI-T distributor. Probes, other 
accessories, and fuses are not included in this warranty. 
 
If the product is proved to be defective within the warranty period, UNI-T reserves the rights to either repair 
the defective product without charging of parts and labor, or exchange the defected product to a working 
equivalent  product.  Replacement  parts  and  products  may  be  brand  new,  or  perform  at  the  same 
specifications as brand new products. All replacement parts, modules, and products become the property of 
UNI-T. 
 
The  “customer” refers  to  the individual  or  entity that  is  declared in the  guarantee. In  order  to  obtain the 
warranty service, "customer" must inform the defects within the applicable warranty period to UNI-T, and to 
perform appropriate arrangements for the warranty service. The customer shall be responsible for packing 
and shipping the defective products to the designated maintenance center of UNI-T, pay the shipping cost, 
and provide a copy of the purchase receipt of the original purchaser. If the product is shipped domestically 
to the location of the UNI-T service center, UNI-T shall pay the return shipping fee. If the product is sent to 
any other location, the customer shall be responsible for all shipping, duties, taxes, and any other expenses. 
 

Содержание UTE9811+

Страница 1: ...User s Manual UTE9811 Smart Digital Power Meter...

Страница 2: ...warranty period will be from the date of the original purchase from an authorized UNI T distributor Probes other accessories and fuses are not included in this warranty If the product is proved to be...

Страница 3: ...tributors are informed that any indirect special incidental or consequential damage may occur UNI T and its distributors shall not be responsible for any of the damages Safety Instructions To avoid po...

Страница 4: ...r specified for this product 11 Do not use the instrument that work abnormally if you suspect that the product has malfunctioned let qualified maintenance personnel to check the instrument 12 Unplug t...

Страница 5: ...2 communication line 1 4 User s manual Please download from official website http www uni trend com Explanation After confirming that the contents of the package are consistent and there are no proble...

Страница 6: ...User s Manual UTE9811 Smart Digital Power Meter Instruments uni trend com 6 40 2 Testing Position 3 Remove Hand Shank 4 Lift Position...

Страница 7: ...of lighting appliances power tools household appliances electricmotors and electric heating appliances of production lines laboratories and quality inspection departments Characteristics 1 VA broken c...

Страница 8: ...ter Voltage Resolution 0 01V 0 1V Measuring Range of Current 5 0mA 20 0A Current Range 200mA 1A 4A 20A Accuracy of Current 40Hz f 70Hz 0 4 reading 0 1 range 1 character Current Resolution 0 001A Switc...

Страница 9: ...ut for Continuous Voltage 700V Current 24A Maximum of Allowed Input for Instant 1000V 40A 1 min Input Impedance Voltage about 2 M Current is less than 0 02 Upper Lower limit Four settings for the uppe...

Страница 10: ...000 meters General Characteristic Color Gray Weight 3 2kg Size 214mm 88mm 340mm Standard Accessories Specialized power cable x1 RS232 serial port line X1 Optional Accessories UTE L10A 10A three pronge...

Страница 11: ...the two keys in the manual Up Down Key Menu editing Use up down key to select function item Number editing Use up down key toincrease or decrease the numerical value For description use to indicate th...

Страница 12: ...d Symbol Display and Symbol Description Four display windows Display measurement data The display screen can display V voltage A current W power PF power factor Hz frequency and measurement value of h...

Страница 13: ...he format special symbols are needed to represent each character as shown in the following figure A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9 0 2 5 Rear Panel The rear panel...

Страница 14: ...ded Warning Please make sure that the power supply voltage matches the supply voltage before turning on the power supply otherwise the instrument will be burned out Notes The instrument should be used...

Страница 15: ...nagain otherwisetheinstrumentmayabnormally display 3 1 4 Power on Measurement Firstly plug in the power socket on the rear panel and use the specified voltage the power socket should be with a ground...

Страница 16: ...70Hz The four window display as shown in the following figure 3 2 2 Alarm for Over Range These situations will be regarded as over range 1 The measured value of voltage and current exceeds 120 of the...

Страница 17: ...l not refresh Press it again the indicator will be extinguished and the data will be update 3 2 6 Lock Lock Key To prevent from error operating during measurement lock key function can set other key b...

Страница 18: ...ch by press PF HZ key 3 3 2 Crest Factor Press CF key to enter crest factor display interface as shown in the following figure Window 1 the measured value of voltage crest factor no unit The measured...

Страница 19: ...nit is A Window 3 the total RMS active power operation value of 1 50 times the unit is W Window 4 is fixed to display RMS When no voltage signal is input or voltage frequency is over the range Window...

Страница 20: ...V Window 2 the current measured value of the current harmonic times the unit is A Window 3 the total RMS power operation value of 1 50 times the unit is W When no voltage signal is input or voltage fr...

Страница 21: ...unit is Window 2 current total harmonic distortion factor the unit is Window 3 the total RMS power operation value of 1 50 times the unit is W When window 4 displays or01 or50 Window 1 voltage distort...

Страница 22: ...the average function is enabled and the number of average Average The average method is moving average it is for power supply or load with great variation or the numerical value display is unstable r...

Страница 23: ...s ENTER key to enter the next option and the press or key to select 0 1 0 25 0 5 1 2 or 5 3 Press ENTER key to select the current selected option and save it 4 Press or key to select other submenu or...

Страница 24: ...o the size of input signal UTE9811 is only supports auto range in normal mode Voltage Range Increasing The voltage range will increasing when any one of the following condition is met Urms exceeds mea...

Страница 25: ...editing state press key to edit the numerical value 3 Press ENTER key save the setting 4 Press or key to select other submenu or press SETUP key to exit SETUP menu Explanation A Hi represents the uppe...

Страница 26: ...the upper lower limit is 0 at the same time it represents the alarm function is forbidden Alarm Function After the alarm function is enabled the system waits to connect the load When the system detec...

Страница 27: ...press SETUP key to exit SETUP menu Explanation UTE9811 supports SCPI and Modbus communication command represents Modbus communication command Modbus is only support RTU mode The detailed command can r...

Страница 28: ...s Step 1 Press SETUP key to enter SETUP menu press or key to select submenu Addr as shown in the following figure 2 Press ENTER key to enter numerical value editing state press key to editing numerica...

Страница 29: ...key to exit Utility menu Explanation The setting parameter can be initialize and restore it to the factory setting This function is very useful for cancelling all the setting or restarting execute mea...

Страница 30: ...ts firmware version represents hardware version 7 3 User s Grade Step 1 Long press ENTER Utility key to enter Utility menu press or key to select submenu LEVEL as shown in the following figure 2 Press...

Страница 31: ...E9811 Auxiliary Function After the user s grade is complete reboot the instrument for the setting to take effect 7 4 Firmware Update Step 1 Long press ENTER Utility key to enter Utility menu press or...

Страница 32: ...r Utilitymenu press or key toselect submenu CALib as shown in the following figure 2 Press ENTER key toenter secret codeediting press key toedit secret code 3 Press ENTER keyto confirmthesetting ifthe...

Страница 33: ...hould match with the following parameters of the control host 1 Baud Rate 4800 9600 19200 38400 57600 115200 The setting method of baud rate for UTE9811 can refer to section 6 2 2 Check bit NONE fixed...

Страница 34: ...on As shown in the following figure 8 2 2 PC connect to multiple UTE9811 via RS485 The number in block diagram represents the pin number of DB9 interface Use direct serial port line to connect PC and...

Страница 35: ...on 9 1 3 Do not store the instrument in an environment with dust fumes or chemical gases 9 1 4 Avoid direct sunlight 9 2 Trouble shooting No Problem Solution 1 No widow display when enable the instrum...

Страница 36: ...calculating the measuring error value to judge whether is within the error range The requirements of environment temperature of verification and calibration as the following table Item Reference Valu...

Страница 37: ...ur own Match Solution of Testing Wire Match Solution Name Component and Name Specification of Voltage Current Lengt h Recommende d Appliance Solution 1 10A testing wire and accessorie s UTE L10A 10A t...

Страница 38: ...ox If the fuse was burned out replace the fuse as the follow steps 1 Pull out the power cable use small screwdriver to take out the fuse box as shown in the following figure If the fuse was burned out...

Страница 39: ...when k 1 r is the real part j is imaginary part Current I k A k I k I k I j r Active power P k W P k I k U k I k U k j j r r Total RMS voltage of 1 50 times U V 50 1 2 k k U U Measurement Function Uni...

Страница 40: ...100 1 I k I Voltage total harmonic distortion factor Uthd 100 1 50 2 2 U k U k Current total harmonic distortion factor Ithd 100 1 50 2 2 I k I k Measured value of voltage total harmonic distortion Ut...

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