Rosemount 848T Especificações descarregar pdf (Página 22)

Reference Manual

00809-0100-4697, Rev GA

Section 2: Installation

November 2014

Installation

2.5 Switches

Figure 2-9. Switch Location on the Rosemount 848T

Security

After configuring the transmitter, the data can be protected from unwarranted changes. Each

848T is equipped with a security switch that can be positioned “ON” to prevent the accidental

or deliberate change of configuration data. This switch is located on the front side of the

electronics module and is labeled SECURITY.

See Figure 2-9 for switch location on the transmitter label.

Simulate enable

The switch labeled SIMULATE ENABLE is used in conjunction with the Analog Input (AI) and

Multiple Analog Input (MAI) function blocks. This switch is used to simulate temperature

measurement.

Not used

The switch is not functional.

2.6 Tagging

Commissioning tag

The 848T has been supplied with a removable commissioning tag that contains both the Device

ID (the unique code that identifies a particular device in the absence of a device tag) and a space

to record the device tag [the operational identification for the device as defined by the Piping

and Instrumentation Diagram (P&ID)].

When commissioning more than one device on a fieldbus segment, it can be difficult to identify

which device is at a particular location. The removable tag, provided with the transmitter, can

aid in this process by linking the Device ID to its physical location. The installer should note the

physical location of the transmitter on both the upper and lower location of the commissioning

tag. The bottom portion should be torn off for each device on the segment and used for

commissioning the segment in the control system.

NOT USED

SECURITY

SIMULATE ENABLE

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