45

Users Manual

 

 

 

 

45 DUAL DISPLAY MULTIMETER

 

 

 

 

 

V

 

10A

 

M

 

AUTO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

600V CAT I

!

 

 

 

 

VAC

 

 

Hz

CAL

 

1000V CAT I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ENABLE

 

COM

 

100

 

 

 

 

 

 

 

 

 

 

mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FUSE F1

V

A

 

 

 

 

REL

dB

2ND

 

 

500 mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F 250V

 

 

 

 

 

 

REF#

REF

LOCAL

 

FUSED

V

A

FREQ

AUTO

 

 

 

 

 

 

 

 

 

 

HOLD

MN MX

RATE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMP

HI

LO

THRESH

ADDR

BAUD

+

-

 

 

 

 

 

 

 

POWER

 

 

 

 

 

 

 

 

 

 

 

 

 

V

 

 

 

 

 

 

 

2ND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FREQ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

aam16f.eps

Figure 4-1. Dual Display Showing Volts AC and Frequency

Using Measurement Functions in Combination

The dual display allows you to display two properties of the input signal being measured. Any combination of two properties from the list below is allowed, even those that may not be useful:

Volts dc

Volts ac

Current dc

Current ac

Resistance

Frequency

Diode Test/Continuity

Note

Volts (dc + ac) rms or Current (dc + ac) rms measurements can only be made in the primary display. While (dc + ac) measurements are being made, another function cannot be selected for the secondary display.

Additional combinations of dual readings are added if you use the function modifiers— i.e., REL, MN MX, HOLD, or dB.

Some applications of the dual display using common combinations of readings are provided in Table 4-1.

Taking Voltage and Current Measurements Using the Dual Display

Most applications of the dual display listed in Table 4-1 can be performed using a single set of test leads connected to the Xand COM input terminals.

However, to measure the voltage and current of an input signal requires three leads. Be sure that the voltage and current measurements share the same common as shown in Figure 4-2. Then simply follow the precautions you would follow if you were making normal current measurements without a current clamp.

4-2

Page 49
Image 49
Fluke 45 user manual Using Measurement Functions in Combination, Dual Display Showing Volts AC and Frequency

45 specifications

The Fluke 45 is a versatile and high-precision Digital Multimeter that is designed for a wide range of applications in electrical testing, troubleshooting, and maintenance. Known for its reliability and advanced features, the Fluke 45 is an essential tool for engineers, technicians, and professionals who require accurate measurement capabilities.

One of the standout features of the Fluke 45 is its ability to measure both AC and DC voltage and current. With a maximum input voltage of 1000 volts and current ranges up to 10 amps, users can conduct a variety of electrical tests with confidence. The device is equipped with an intuitive dual display, allowing for simultaneous viewing of multiple measurements. This feature enhances usability during complex diagnostics.

The Fluke 45 also boasts an impressive resolution of 0.1 mV and a basic accuracy of 0.25%, which translates to highly reliable readings. The auto-ranging capability simplifies the measurement process, automatically selecting the appropriate range based on the input signal, thus saving time and reducing user error.

In addition to voltage and current measurements, the Fluke 45 features resistance measurement capabilities, with a range of up to 40 MΩ. This makes it an effective tool for testing circuits, identifying faults, and ensuring the integrity of electrical systems. The continuity test function, complete with a built-in beeper, assists in quickly diagnosing wiring issues.

Another remarkable characteristic of the Fluke 45 is its frequency measurement capabilities, which can measure frequencies up to 1 MHz. This is particularly useful in applications involving signal analysis and troubleshooting oscillators.

Moreover, the Fluke 45 is designed with user convenience in mind. It is lightweight and portable, making it easy to carry around, whether on a job site or in a workshop. The rugged construction, reinforced with high-quality materials, ensures it can withstand harsh conditions often encountered in the field.

To enhance functionality, the Fluke 45 features a data hold function that freezes the displayed measurement for easier reporting. Additionally, it can store data for later retrieval, making it convenient for users who need to compile test results over time.

In summary, the Fluke 45 Digital Multimeter is an advanced instrument that combines precision, versatility, and user-friendly design. Its wide measurement capabilities, high accuracy, and durable build make it an invaluable tool for professionals in diverse electrical and electronic applications. Whether for routine maintenance or complex troubleshooting, the Fluke 45 stands out as a reliable partner in achieving accurate and efficient results.