Digi-Sense 20250-66 Instruction Manual

THE STANDARD IN PRECISION MEASUREMENT

User Manual

Digital Multimeter with Thermal Imager

with Bluetooth® Mobile App and NIST-Traceable Calibration

Model 20250-66

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Introduction

The Digi-Sense Digital Multimeter with Thermal Imager and Bluetooth® Connectivity (model 20250-66) allows you to transmit data directly to your Android free D/S T-View app. Now you can view data at a safe distance from potentially hazardous parameters or even use your smart device as a real-time secondary display for checking measurements, eliminating the need to write down readings on paper. The results are automatically stored in the app with a date-and-time stamp and can be saved as a CSV ﬁle and emailed for future reference, manipulation, or analysis to help determine trends and conditions over a long period of time. You can also use the app to attach photos and notes to the records creating a clear reference point for your work—ideal for record keeping at large sites.

Setup is simple. Download the free D/S T-View app to your Android or iOS device. Place the meter in Bluetooth mode and open the app on your smart device. The meter will be sensed by your device and be listed as an available source that you can select. Once selected, the measured electrical data is displayed on your device and some of the instrument functions can be accessed. A full description of its operation is available for download in the app.

The Digital Multimeter with Thermal Imager provides fast A/D converting sampling time, high accuracy with data logging and trend capture features. This instrument is fully tested and calibrated to NIST-traceable standards for reliable measurements right out of the box, saving you time and money.

™

or iOS® device using our

Key Features

• Bluetooth interface

• User-friendly mobile app

• 6000 count 2.8'' TFT color LCD

• Double-molded IP65-rated housing

• Built-in Thermal imager with Max, Min and Center crosshair targeting

• 50 Hz fast thermal image frame rate

• DC voltage

• AC, AC+DC TRMS voltage

• DC current

• AC, AC+DC TRMS current

• Resistance and continuity test

• Diode test

• Capacity

• Frequency

• Duty cycle

• Temperature with type K probe

• Flexible coils current

Unpacking

Check individual parts against the list of items below. If anything is missing or damaged, please contact your instrument supplier immediately.

1. Meter

2. Test leads

3. One type K temperature probe

4. Two rechargeable Li-ion batteries

5. Battery charger cradle with

international adapters

5. Hard carrying case

6. User manual

7. NIST-traceable calibration report with data

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Safety

WARNING

This symbol adjacent to another symbol, terminal or operating device indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter.

This WARNING symbol indicates a potentially hazardous situation, which if not avoided, could result in death or serious injury.

CAUTION

This CAUTION symbol indicates a potentially hazardous situation, which if not avoided, may result damage to the product.

MAX

This symbol advises the user that the terminal(s) so marked must not connected to a circuit point at which the voltage with respect to earth ground exceeds (in this case) 1000 VAC or VDC.

This symbol adjacent to one or more terminals identiﬁes them as being associated with ranges that may, in normal use, be subjected to particularly hazardous voltages. For maximum safety, the meter and its test leads should not be handled when these terminals are energized.

This symbol indicates that a device is protected throughout by double insulation or reinforced insulation.

Safety Instructions

This meter has been designed for safe use, but must be operated with caution. The rules listed below must be carefully followed for safe operation.

• NEVER apply voltage or current to the meter that exceeds the speciﬁed maximum:

Input Protection Limits

Function Maximum Input V DC or V AC 1000VDC/AC RMS mA AC/DC 800mA 1000V fast acting fuse A AC/DC 10A 1000V fast acting fuse Frequency, Resistance, Capacitance, Duty Cycle, Diode Test, Continuity 1000VDC/AC rms Surge Protection: 8kV peak per IEC 61010

• USE EXTREME CAUTION when working with high voltages.

• DO NOT measure voltage if the voltage on the “COM” input jack exceeds 1000V above earth ground.

• NEVER connect the meter leads across a voltage source while the function switch is in the current, resistance, or diode mode. Doing so can damage the meter.

• ALWAYS discharge ﬁlter capacitors in power supplies and disconnect the power when making resistance or diode tests.

• ALWAYS turn off the power and disconnect the test leads before opening the covers to replace the fuse or batteries.

• NEVER operate the meter unless the back cover and the battery and fuse covers are in place and fastened securely. If the equipment is used in a manner not speciﬁed by the manufacturer, the protection provided by the equipment may be impaired.

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Description and reference guide

Front description

1. NCV detector area

2. LCD

3. Navigation/Menu buttons

4. MODE button

5. RANGE button

6. Rotary function switch

7. Positive (+) probe input jack for A (current)

8. Positive (+) probe input jack for mA (current)

9. COM(-) probe input jack

10. Positive (+) probe input jack for all inputs except A and mA

11. Thermal mode/light button

12. Hold/capture button

Back description

13. No-slip slope

14. Thermal imager lens

15. Lens cover

16. Work light

17. Laser

18. Support plate

19. Battery cover lock

13 14 15 16

2 3

4 5

12 11

7 8

Understanding the Push Buttons

The 9 push buttons on the front of the Meter activate features that augment the function selected using the rotary switch, navigate menus or control power to Meter circuits.

• Cursor buttons:

Select an item in a menu, adjust display contrast, scroll through information, and perform data entry.

PEAK

Use Navigation UP button to select PEAK function.

REL

Use Navigation Left button to select REL function.

MAX

Use Navigation Right button to select MAX function.

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• Physical buttons:

Freezes the present reading in the display and allows display to be saved.

HOLD

ESC

Also wake up for APO.

MODE

Press the MODE key to switch the functions.

RANGE

Press the RANGE key to manual range.

Enter function of the menu selects.

■��

Press the IR key to switch DMM MODE and IR+DMM MODE.

Navigation buttons.

Understanding the Display

• Measurement on LCD

1. Indication of battery charge level

2. Indication of measuring result

3. Indication of Automatic/Manual mode

4. Analog bar graph

5. Indications associated with function keys

6. Indication of the system's time

7. Indication of measuring unit

8. SD card

9. Temperature measuring result

10. Indication of Automatic/Manual mode

11. Temperature unit

12. IR camera

13. Indication of measuring unit

14. Indication of measuring result

DMM Mode

8 9

IR+ DMM Mode

13 14

• Icons on LCD

Voltage is over 30V (AC or DC)

Warning

Flexible coils Traditional clamps

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Relative

High edge time AC voltage or

current DC voltage or

current

AC+DC voltage

or Current

))

•

)

Continuity function Diode function Ohms

Understanding the Rotary Switch

V HZ %

Ω CAP

• K Temp A mA

µA

))

AC voltage measurements DC and AC+DC voltage measurements Frequency and Duty measurements

Resistance, Diode test, Capacitance and Continuity measurements

)

Temperature measurements AC, DC and AC+DC amps measurements AC, DC and AC+DC milliamps measurements

AC, DC and AC+DC microampere measurements up to 6,000 μA

Flexible coils current

Select a primary measurement function by positioning the rotary switch to one of the icons around its perimeter. For each function, the meter presents a standard display for that function (range, measurement units, and modiﬁers). Button choices made in one function do not carry over into another function.

DMM Measurement and Setup

DC Voltage Measurements

CAUTION: Do not measure DC voltages if a motor on the circuit is being switched ON

or OFF. Large voltage surges may occur that can damage the meter.

• Set the function switch to the VDC position.

• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive V jack.

• Read the voltage in the display.

AC+DC Voltage Measurements

CAUTION: Do not measure DC voltages if a motor on the circuit is

being switched ON or OFF. Large voltage surges may occur that can damage the meter.

• Set the function switch to the VDC position.

• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive V jack.

• Press the MODE key to switch the V AC+DC Voltage functions.

• Read the AC+DC voltage in the display.

AC Voltage Measurements WARNING: Risk of Electrocution. The probe tips may not be long enough to contact

the live parts inside some 240V outlets for appliances because the contacts are recessed deep in the outlets. As a result, the reading may show 0 volts when the outlet actually has voltage on it. Make sure the probe tips are touching the metal contacts inside the outlet before assuming that no voltage is present.

CAUTION: Do not measure AC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may occur that can damage the meter.

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• Set the function switch to the VAC position.

• Insert the black test lead banana plug into the negative COM jack. Insert red test lead banana plug into the positive V jack.

• Read the voltage in the main display.

Frequency Measurements

• Set the function switch to the Hz% position.

• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive V jack.

• Read the Frequency in the display.

• Press the MODE key to switch the Duty functions.

• Read the Duty in the display.

Resistance Measurements

To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements. Remove the batteries and unplug the line cords.

• Set the function switch to the Ω CAP

•))) position.

• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive Ω jack.

• Read the resistance in the display.

Continuity Check

WARNING: To avoid electric shock, disconnect power to the unit under test and discharge

all capacitors before taking any resistance measurements. Remove the batteries and unplug the line cords.

• Set the function switch to the Ω CAP

•))) position.

• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive jack.

• Press the MODE key to switch the continuity functions.

• If the resistance is less than approximately 50 Ω, the audible signal will sound. If the circuit is open, the display will indicate “OL”.

4.7. Diode Test

• Set the function switch to the Ω CAP

•))) position.

• Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack.

• Press the MODE key to switch the Diode functions.

• Forward voltage will typically indicate 0.400 to 3.000V. Reverse voltage will indicate “OL”. Shorted devices will indicate near 0V and an open device will indicate “OL” in both polarities.

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Capacitance Measurements

WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all

capacitors before taking any capacitance measurements. Remove the batteries and unplug the line cords.

• Set the rotary function switch to the Ω CAP

• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive V jack.

• Press the MODE key to switch the Capacitance functions.

• Read the capacitance value in the display.

•))) position.

Temperature Measurements

• Set the function switch to the TEMP (°C or °F) position.

• Insert the temperature probe into the input jacks, making sure to observe the correct polarity.

• Read the temperature in the display.

• Press the MODE key to switch the Unit (°C or °F).

Flexible Coil Current Measurements

• Set the function switch to the Flexible coil position.

• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive V jack.

• Read the current in the display.

• Press the MODE key to switch the AC, DC and AC+DC current.

• Press the RANGE key to switch range. 1000mA, 10A, 30A, 40A, 100A, 300A, 400A, 1000A, 3000A.

DC Current Measurements

• Insert the black test lead banana plug into the negative COM jack.

• For current measurements up to 6000μA DC, set the function switch to the μA position and insert the red test lead banana plug into the μA/mA jack.

• For current measurements up to 600mA DC, set the function switch to the mA position and insert the red test lead banana plug into the μA/mA jack.

• For current measurements up to 10A DC, set the function switch to the 10A position and insert the red test lead banana plug into the 10A jack.

• Press the MODE button to indicate “

• Read the current in the display.

=” on the display.

AC Current Measurements

CAUTION: Do not make 10A current measurements for longer than 30 seconds. Exceeding

30 seconds may cause damage to the meter and/or the test leads.

• Insert the black test lead banana plug into the negative COM jack.

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+ 16 hidden pages

Digi-Sense 20250-66 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual