BYPASSING & ISOLATING

(continued)

RETURN TO SERVICE continued*

 

 

 

 

 

 

 

 

 

This procedure explains how to return the Bypass Switch

 

 

 

 

You can only bypass to the same source

Handle to the OPEN position. The Bypass Handle must

that the ATS is connected. Solenoid

be in the CLOSED position (yellow indicator on NOR-

interlock prevents incorrect operation.

MAL or EMERGENCY) and the Isolation Handle must

 

 

1 Observe which Bypass Switch Position indicator is

be in the TEST position (window). If the handles are not

yellow (NORMAL or EMERGENCY) at the Bypass

in these positions, refer to Return to Service on page 3–3.

Switch Handle. This indicates the source connected

See Figures 3–11, 3–12, and 3–13.

to the load.

 

 

 

 

2 Un–Bypass to same source as the Bypass Switch

 

 

Position as follows (select Normal or Emergency).

 

 

Indicator shows:

 

 

yellow ● EMERGENCY CLOSED

 

 

when ATS is bypassed to Emergency

Indicator shows:

or

 

 

green ● OPEN when the

yellow ● NORMAL when ATS is

bypassed to Normal Source.

ATS is not bypassed.

 

 

To un–Bypass Normal push in handle all the way & turn it counterclockwise.*

To un–Bypass Emergency pull out handle all the way & turn it counterclockwise.*

Figure 3–11. Bypass Handle and position indicators.

To Un–Bypass Normal Source*

(Load connected to Normal Source)

The Transfer Switch Connected To Normal light is on and Transfer Switch Connected To Emergency light is off.

Push in* the Bypass Handle then turn it counterclockwise until Bypass Switch Position shows OPEN (green indica- tor). The Unit Not in Automatic light should be off.

Push in

Bypass Switch

E

Bypass

 

 

Handle

 

 

&

 

 

turn it

 

 

counter-

 

L

clockwise.

 

 

 

 

 

N

 

ATS

 

Figure 3–12. Un–Bypass Normal.

 

To Un–Bypass Emergency Source*

(Load connected to Emergency Source)

The Transfer Switch Connected To Emergency light is on and Transfer Switch Connected To Normal light is off.

Pull out* the Bypass Handle then turn it counterclock- wise until Bypass Switch Position shows OPEN (green indicator). The Unit Not in Automatic light should be off.

Pull out

Bypass Switch

E

Bypass

 

 

Handle

 

 

&

 

 

turn it

 

 

counter-

 

L

clockwise.

 

 

 

 

N

 

ATSE

 

Figure 3–13. Un–Bypass Emergency.

 

The Automatic Delayed–Transition Transfer & Bypass–Isolation Switch should be left in this position.

*NOTE: When Accessory 66A (reversed Normal & Emergency connections) is specified, the handle push–pull operation is reversed. Follow instructions on the door.

3---4

Page 10 Page 12
Page 11
Image 11
Emerson 7000 SERIES 7ADTB manual Return to Service, To Un-Bypass Normal Source, Bypass Handle Turn it Counter Clockwise
Page 10 Page 12

7000 SERIES 7ADTB specifications

The Emerson 7000 Series 7ADTB is a state-of-the-art temperature transmitter designed for industrial applications that require high precision and reliability. As part of the renowned 7000 series, the 7ADTB model combines advanced digital technology with robust construction, making it an essential tool for temperature measurement in sectors such as oil and gas, chemical processing, pharmaceuticals, and food production.

One of the standout features of the 7ADTB is its exceptional accuracy. With a measurement range that adapts to various sensor types, including thermocouples, RTDs, and thermistors, the transmitter ensures precise readings and optimizes process control. The modular design allows for easy integration into existing systems, thereby enhancing operational efficiency.

The 7000 Series incorporates Emerson’s proprietary Micro Tracy technology, which provides excellent stability and minimizes drift, ensuring reliable performance over time. This is particularly important in environments where temperature fluctuations can affect product quality and safety. The transmitter offers a linearized output and is capable of digital communication via protocols such as HART, Profibus, and Fieldbus, allowing for seamless integration with modern control systems.

Another notable characteristic of the 7ADTB is its rugged construction. Built to endure harsh industrial conditions, the transmitter features a robust housing that is resistant to corrosion and mechanical stress. This durability not only extends the life of the instrument but also reduces the need for frequent maintenance.

The Emerson 7000 Series 7ADTB is also equipped with user-friendly interfaces and advanced diagnostic capabilities. A built-in display provides instant readings and real-time data while allowing users to easily navigate through configuration settings. Furthermore, the device includes self-diagnostic features that alert operators to potential issues before they escalate, promoting preventative maintenance practices.

Overall, the Emerson 7000 Series 7ADTB temperature transmitter is a versatile and reliable solution that caters to a wide range of industrial applications. With its exceptional accuracy, robust design, and advanced communication capabilities, it stands as a testament to Emerson's commitment to delivering innovative measurement solutions that enhance operational efficiency and product quality. This makes it a preferred choice for engineering professionals looking to optimize their temperature measurement processes.
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