943-227-15 Digital Preamplifier

Operator Manual

NOTE

The electrometer circuitry in the preamplifier is highly sensitive to moisture and physical damage. Use extreme care when the preamplifier case is opened as the high impedance electrometer circuitry is easily damaged. Do not leave the preamplifier enclosure in the open position for any extended period of time.

The preamplifier terminations are listed below.

Table 3-1. 943-227-15 Preamplifier Electrical Connections

TB1-

1

2

3

4

5

6

7

8

9

10

HV

SIG

943-227-15

 

Description

Connects To

977-210-10M

 

XMIT

J4-1

DTR

J4-2

GND

J4-3

REC

J4-4

Not Used

Not Used

Not Used

Not Used

+ 15 VDC

J3-7

Ground

J3-8

- 15 VDC

J3-4

Not Used

Not Used

 

 

Detector

 

Connections

 

Detector MHV

From Field

coaxial cable

 

 

Factory

Detector BNC

Terminated,

To 977-200-

 

 

15M, R41

943-27-15VL

 

 

 

Description

Connects To

977-210-10M

 

+ VL, 15

J3-1

VDC

 

+ TX

J3-2

- TX

J3-3

- VL

J3-4

+ RX

J3-5

- RX

J3-6

Not Used

Not Used

Ground

J3-8

Not Used

Not Used

Not Used

J3-11

 

 

Detector

 

Connections

 

Detector

From Field

MHV

coaxial cable

 

Factory

Detector

Terminated,

BNC

To 977-200-

 

15M, R41

 

 

3.2 Set-up

To place the system in operation, the following steps should be performed:

NOTE

Ensure you have read and fully understand

Section 1, 2 and 3 prior to continuing.

1.Verify that jumpers and DIP switches and jumpers on the preamplifier, are set for the operational features desired. Refer to Section 1, Table 1-4.

2.Refer to the applicable controller manual prior to powering up the controller.

3-2

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Fluke 943-227-15, 943-27 manual Set-up, TB1

943-227-15, 943-27 specifications

The Fluke 943-27 and Fluke 943-227-15 are advanced electrical testing tools designed to meet the demands of professionals in industrial and commercial settings. Recognized for their accuracy and reliability, these devices come loaded with essential features tailored to ensure optimal performance during electrical measurements.

The Fluke 943-27 is a compact yet powerful multimeter that excels in providing precise voltage and current readings. It is equipped with a large, backlit display that ensures visibility in low-light environments. The device supports a wide range of testing parameters, including AC and DC voltage, resistance, continuity, and capacitance measurements, making it invaluable for troubleshooting electrical circuits.

On the other hand, the Fluke 943-227-15 offers additional capabilities, including advanced data logging features. This multimeter allows users to record and analyze measurements over time, which is particularly useful for identifying intermittent issues in electrical systems. Its connectivity options enable seamless data transfer to a computer or mobile device, facilitating easy documentation and reporting.

Both models illustrate a robust construction built to endure tough working conditions. They meet stringent safety standards, which is critical for protecting users from electrical hazards. The ergonomic design ensures comfort during prolonged use, and features like overmolding enhance grip and durability.

One of the standout technologies in these multimeters is Flukeā€™s True-RMS measurement capability. This feature ensures accurate readings of non-linear loads, which are common in modern electrical systems with variable frequency drives and other electronic devices. Additionally, the built-in low-pass filter technology reduces noise in measurements, ensuring precision even in environments with significant electrical interference.

The Fluke 943-27 and 943-227-15 are also designed to be user-friendly. They feature intuitive controls and a straightforward user interface, allowing technicians to navigate functions effortlessly. The ability to perform automatic ranging simplifies measurements, eliminating the potential for errors when setting the range manually.

In conclusion, the Fluke 943-27 and 943-227-15 represent essential tools for electrical technicians who require versatility, accuracy, and durability in their testing equipment. With advanced features, reliable technologies, and a user-centric design, these multimeters not only meet but exceed the expectations of professionals in the field.