f. Troubleshooting Flowchart - Quick Reference...

Third Visual Check

(Does Main Burner Ignite?)

 

 

 

 

De-energize

Does

 

Does

 

the system and disconnect

 

the Flame Probe

 

Flame Sensor from the

main burner

 

 

DSI Module. Connect an ohmmeter

No

have carbon or

No

remain

across the Flame Sensor

 

dust build

 

lit?

 

 

Sensor and ground.

 

up?

 

 

 

 

Is resistance less

Yes

 

Yes

 

than 50 mega-ohms?

 

 

 

 

 

 

 

Does

 

ignitor spark turn

 

"OFF" with main

 

burner flame still

 

present?

 

Yes

 

Control's heat requirements

No

satisfied.

 

DSI cycle is complete.

 

Does ignitor spark continue

 

with burner flame present?

 

Remove Flame Sensor Assembly.

Clean the surface of the Flame Sensor Rod with fine steel woolor emery c loth, then reinstall.

Energize system and check for proper operation.

Replace

DSI Module

No

Connect

ohmmeter across Flame Sensor lead terminal and Flame Sensor. Does continuity

exist?

No

Replace Flame Sensor

Yes Assembly.

Energize system and check

for proper operation.

Is

DSI Module "GND" terminal properly connected to ground?

No

Correct ground wiring

Is

Flame Sensor Probe properly located in the flame? Proper flame location would

Yesprovide adequate flame current yetwill not exceed maximum rod

temperature. Microammeter reads 2µa or

greater.

Yes

Yes

Reposition Flame Sensor Probe to achieve a

 

 

2µa or greater sensor current or, if

 

No

unattainable, replace the Sensor Probe

 

 

 

Assembly.

 

 

 

 

 

27

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Image 31
ADC AD-200 service manual Third Visual Check

AD-200 specifications

The ADC AD-200 is a high-performance analog-to-digital converter designed to meet the needs of a wide range of applications including industrial automation, instrumentation, medical devices, and consumer electronics. This converter is renowned for its combination of speed, precision, and reliability.

One of the standout features of the ADC AD-200 is its exceptional resolution. Offering up to 24 bits of resolution, it provides an outstanding level of detail and accuracy in signal conversion. This high resolution makes it ideal for applications where precision is paramount, such as in audio processing and sensitive measurements in scientific research.

The AD-200 operates at a maximum sampling rate of 1 Msps (mega-samples per second), allowing it to effectively capture fast-changing signals. This speed ensures that the converter can handle dynamic input signals without missing critical data points. Additionally, the device employs a pipelined architecture, which helps to maintain high throughput while keeping latency low—an essential characteristic for real-time applications.

Another critical aspect of the AD-200 is its low input noise and distortion levels. With a total harmonic distortion (THD) of less than 0.01%, the converter maintains signal integrity even when processing high-frequency signals. This feature is crucial in audio and instrumentation applications where signal clarity and fidelity are necessary.

The ADC AD-200 is equipped with advanced digital signal processing (DSP) capabilities, allowing users to perform filtering, averaging, and other signal conditioning tasks on the incoming data stream. This built-in processing capability means users can reduce the load on external processors, streamlining system designs and improving overall efficiency.

The device supports various input voltage ranges, which makes it versatile for multiple applications. It is compatible with single-ended and differential input configurations, providing flexibility for different circuit designs and requirements.

Connectivity features include both serial and parallel interfaces, offering easy integration into various systems. The ADC also comes with a robust software development kit (SDK) that provides necessary drivers and support to facilitate quicker implementation and system optimization.

In summary, the ADC AD-200 is a versatile, high-performance analog-to-digital converter marked by its high resolution, fast sampling rate, low noise levels, integrated DSP capabilities, and flexible connectivity options. These features make it a preferred choice for engineers and developers aiming for excellence in signal processing tasks across diverse industries.