Operation; Mounting Brackets; B.3.5 Operation - Emerson Rosemount 3051N Reference Manual

Reference Manual

00809-0100-4808, Rev DA

Normal operation messages appear on the LCD display meter to confirm actions or inform you of transmitter status. Operation messages

are displayed with other transmitter information, and warrant no action to correct or alter the transmitter settings.

ZERO PASS

The zero value, set with the local zero adjustment button, has been accepted by the transmitter, and the output should change to 4 mA.

ZERO FAIL

The zero value, set with the local zero adjustment button, exceeds the maximum rangedown allowed for a particular range, or the

pressure sensed by the transmitter exceeds the sensor limits.

SPAN PASS

The span value, set with the local span adjustment button, has been accepted by the transmitter, and the output should change to 20 mA.

SPAN FAIL

The span value, set with the local span adjustment button, exceeds the maximum rangedown allowed for a particular range, or the

pressure sensed by the transmitter exceeds the sensor limits.

LOCAL DSBLD

This message appears during reranging with the integral zero and span buttons and indicates that the transmitter local zero and span

adjustments have been disabled. The adjustments may have been disabled by the transmitter security jumper on the transmitter circuit

board or through software commands from the HART Communicator. See

position of the security jumper, removal of local zero and span buttons, and for information on the software lockout.

WRITE PROTECT

This message appears if attempting to change the transmitter configuration data while the security jumper is in the ON position. See

"Transmitter security" on page 4

B.4 Mounting brackets

Optional mounting brackets available with the Rosemount 3051N facilitate mounting to a panel. The standard bracket (B4) for use with

the coplanar flange is stainless steel with stainless steel bolts. Refer to

Option B2 is polyurethane painted carbon steel bracket designed for use with the traditional flange (H2). The B2 bracket is supplied with

carbon steel bolts and supports panel mounting. Refer to

Option BS is a 316LSST bracket supplied with carbon steel bolts and designed for use in panel mounting with the traditional flange (H2). It

is the same bracket used on other RNII nuclear qualified transmitters, including the Rosemount 1153 series D and Rosemount 1154. Refer

to

Figure 3-4 on page 30

for dimensions and mounting configurations.

Option PM is a SST pipe mount bracket assembly designed for use in pipe mounting the traditional flange (H2). It is the same bracket used

on other RNII nuclear qualified transmitters, including the Rosemount 1154 Series H.

When installing the transmitter to the optional mounting brackets, torque the bolts to 21 foot-pounds. See

additional mounting considerations.

56

for more information about the security jumper.

Figure 3-4 on page 30

"Transmitter security" on page 4

Figure 3-2 on page 28

for dimensions and mounting configurations.

for dimensions and mounting configurations.

Options

October 2016

for information on the

"Mounting" on page 31

for

Options