UNI-T UT712 Operating Manual Download Page 3

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Introduction

The Uni-Trend UT712 Volt/mA Calibrator is a source and measurement tool for 0 to
20mA current loop testing and DC Voltage from 0 to 20V. The calibrator does not
source and measure simultaneously.

Your calibrator has a unique design and large LCD can read the data clearly.

Your calibrator is supplied with the following:

User Manual

Test Leads

Alligator Clip

Carrying Bag

9V alkaline battery (ANSI/NEDA 1604A or IEC 6LR61)

1 piece

1 set

1 piece

If the calibrator is damaged or something is missing, contact the place of purchase
immediately.

Model UT712: OPERATING MANUAL

Summary of Contents for UT712

Page 1: ... Turning the Calibrator On Measuring DC Volts V and COM jack Sourcing DC Volts V and COM jack Measuring DC mA mA and COM jack Measuring DC mA with Loop Power LOOP and mA jack Using the Current Output Modes Sourcing mA Simulating a Transmitter Maintenance In Case of Difficulty Cleaning Calibration Replacing the Fuses Model UT712 Users Manual 1 ...

Page 2: ...19 21 21 22 23 Title Page Replacing the Battery Specifications DC Voltage and DC Current Input DC Voltage and DC Current Output General Specifications Model UT712 OPERATING MANUAL 2 ...

Page 3: ...ultaneously Your calibrator has a unique design and large LCD can read the data clearly Your calibrator is supplied with the following User Manual Test Leads Alligator Clip Carrying Bag 9V alkaline battery ANSI NEDA 1604A or IEC 6LR61 1 piece 1 set 1 set 1 piece 1 piece If the calibrator is damaged or something is missing contact the place of purchase immediately Model UT712 OPERATING MANUAL 3 ...

Page 4: ...Battery Double insulated Conforms to European Union directives Safety Information Use the calibrator only as specified in this user manual otherwise the protection provided by the calibrator may be impaired A Warning identified conditions and actions that pose hazard s to her user Model UT712 OPERATING MANUAL 4 ...

Page 5: ... environment of high temperature humidity explosive inflammable and strong magnetic field The performance of the Meter may deteriorate after dampened When servicing the calibrator use only specified replacement parts Use the proper jacks function and range for your measurementt or output application To avoid false readings which could lead to possible electric shock or personal injury replace the ...

Page 6: ...nternal circuit of the calibrator shall not be altered at will to avoid damage of the calibrator and any acccident When the calibator is off the jacks cannot connect to any loading or they must not be short circuit between jacks When the calibrator is carrying out measurment do not contact any bare cable connector used jacks or the circuit under test Model UT712 OPERATING MANUAL 6 ...

Page 7: ...on Press and to change the cursor location Press and to scroll up down Hold down to scroll faster Press to select mA measurement Press to select V measurement Press to select mV measurement Output Input Jacks Figure 1 Model UT712 OPERATING MANUAL 7 ...

Page 8: ...is in output mode The calibrator is in input mode The measurement unit of the current reading Battery is low Replace the battery The current cursor location OUTPUT INPUT mV V mA Figure 2 Model UT712 OPERATING MANUAL 8 ...

Page 9: ...n off the calibrator when not in use Measuring DC Volts V and COM jack Figure 3 1 Press to turn the calibrator on and off 2 Press so that INPUT is on the display 4 Insert the test leads as shown INPUT mV or V depending on range 3 Press to toggle mV and V ranges Model UT712 OPERATING MANUAL 9 ...

Page 10: ...to turn the calibrator on and off 4 Insert the test leads as shown The current cursor location mV or V depending on range 3 Press to toggle mV and V ranges Press and to change the cursor location Press and to scroll up down Hold down to scroll faster Figure 4 Model UT712 OPERATING MANUAL 10 ...

Page 11: ... mA and COM jack INPUT 2 Press so that INPUT is on the display 1 Press to turn the calibrator on and off display mA 3 Press to choose mA range 4 Insert the test leads as shown Figure 5 Model UT712 OPERATING MANUAL 11 ...

Page 12: ...op Power LOOP and mA jack INPUT 2 Press so that INPUT is on the display 1 Press to turn the calibrator on and off display mA 3 Press to choose mA range 4 Insert the test leads as shown Figure 6 Model UT712 OPERATING MANUAL 12 ...

Page 13: ...rator simulates a two wire transmitter in an externally powered current loop Sourcing mA Use source mode whenever you need to supply current into a passive circuit such as a current loop with no loop supply Insert the test leads into the OUTPUT and mA jacks as shown on figure 7 Model UT712 OPERATING MANUAL 13 ...

Page 14: ... turn the calibrator on and off The current cursor location 3 Press to choose mA 4 Insert the test leads as shown Press and to change the cursor location Press and to scroll up down Hold down to scroll faster Figure 7 display mA Model UT712 OPERATING MANUAL 14 ...

Page 15: ...MULATE and jacks as shown below figure 8 OUTPUT 2 Press so that OUTPUT is on the display 1 Press to turn the calibrator on and off Press and to change the cursor location Press and to scroll up down Hold down to scroll faster display mA The current cursor location 4 Insert the test leads as shown Figure 8 Model UT712 OPERATING MANUAL 15 ...

Page 16: ... and service information Warning In Case of Difficulty l Check the battery and test leads Replace as necessary l Review this user manual to make sure you are using the correct jacks and pushbuttons Cleaning Periodically wipe the case with a damp cloth and detergent do not user abrasives or solvents Calibration Calibrate your calibrator once a year to ensure that it performs according to its specif...

Page 17: ...nnections from the terminals l Remove the screw from the battery compartment and separate the battery compartment from the case bottom l Remove the three screws from the case bottom and separate the case bottom from the case top l Remove the fuse by gently prying one end loose then take out the fuse from its bracket l Install ONLY replacement fuses with the identical type and specification as foll...

Page 18: ...se 1 125mA 250V fast type fuse ø5 20mm Fuse 2 125mA 250V fast type fuse ø5 20mm l Rejoin the case bottom and case top battery compartment and case bottom and install all the screws Model UT712 OPERATING MANUAL 18 ...

Page 19: ...roceed as follows to replace the battery l Turn the calibrator off and remove all the connections from the terminals l Remove the screw from the battery compartment and separate the battery compartment from the case bottom l Replace with a new 9V alkaline battery ANSI NEDA 1604A or IEC 6LR61 l Rejoin the case bottom and the battery compartment and reinstall the screw Model UT712 OPERATING MANUAL 1...

Page 20: ...Figure 10 Model UT712 OPERATING MANUAL 20 ...

Page 21: ...rent Input Input Range Input Range Resolution Accuracy DC Voltage DC Current Loop Current 200mV 20V 20mA 20mA 0 00 200 00 mV 0 000 20 000 V 0 000 20 000 mA 0 000 20 000 mA 0 01mV 0 001V 0 001mA 0 001mA 0 04 readings 3 digits Input impedance 1M nominal When the input value is over the range the LCD displays OL Model UT712 OPERATING MANUAL 21 ...

Page 22: ...mA 20mA 24V 0 00 200 00 mV 0 000 20 000 V 0 000 20 000 mA 0 000 20 000 mA 0 01mV 0 001V 0 001mA 0 001mA 0 04 readings 3 digits 10 l Voltage drive capability 1mA l Source mode Compliance 700 at 20mA for battery voltage 6 5V l Simulate mode External loop voltage requirement 24V nominal 28V maximum 12V minimum Model UT712 OPERATING MANUAL 22 ...

Page 23: ...erating altitude 3000 meters maximum l Temperature coefficient 0 005 of range per for the temperature ranges 0 to 18 and 28 to 50 l Relative humidity 95 up to 30 75 up to 40 45 up to 50 l Vibration Random 2g 5 to 500Hz l Shock 1 meter drop test l Safety Complies with EN61326 1 2006 EN61326 2 2 2006 l Power requirements Single 9V Alkaline battery ANSI NEDA 1604A or IEC 6LR61 l Size 193mm x 96mm x 4...

Page 24: ...n Dong Fang Industrial Development District Hu Men Town Dongguan City Guang Dong Province China Postal Code 523 925 Headquarters Uni Trend Group Limited Rm901 9 F Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon Hong Kong Tel 852 2950 9168 Fax 852 2950 9303 Email info uni trend com http www uni trend com Model UT712 OPERATING MANUAL 24 ...

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