Emerson Rosemount 3051 - Pressure Transmitter Manual

About this guide

This guide provides basic guidelines for Rosemount 3051 Pressure Transmitters. It does not provide instructions for configuration, diagnostics, maintenance, service, troubleshooting, Explosion-proof, Flameproof, or Intrinsically Safe (IS) installations. Refer to the Rosemount 3051 Manual for more instructions. This guide is also available electronically at Emerson.com.

System readiness

Confirm HART^® revision capability

• If using HART-based control or asset management systems, confirm the HART capability of those systems prior to transmitter installation. Not all systems are capable of communicating with HART Revision 7. You can configure this transmitter for either HART Revision 5 or 7.
• For instructions on how to change the HART revision of your transmitter, see Switch HART^® revision mode.

Confirm correct device driver

• Verify the latest device driver (DD/DTM^™) is loaded on your systems to ensure proper communications.
• Download the latest device driver from Emerson.com or Fieldcommgroup.org.

Rosemount 3051 device revisions and drivers

Table 2-1 provides the information necessary to ensure you have the correct device driver and documentation for your device.

Table 2-1: Rosemount 3051 with 4-20 mA HART^® protocol device revisions and files

1. NAMUR revision is located on the hardware tag of the device. Differences in level 3 changes, signified above by xx, represent minor product changes as defined per NE53. Compatibility and functionality are preserved and product can be used interchangeably.
2. HART software revision can be read using a HART capable configuration tool. Value shown is minimum revision that could correspond to NAMUR revisions.
3. Device driver file names use Device and DD Revision, (such as 10_01). HART protocol is designed to enable legacy device driver revisions to continue to communicate with new HART devices. To access new functionality, download the new device driver. Emerson recommends downloading new device driver files to ensure full functionality.
4. HART revision 5 and 7 selectable, Local Operator Interface (LOI), scaled variable, configurable alarms, and expanded engineering units.
5. Rosemount 3051G Pressure Transmitter updated electronics hardware design. Intrinsic Safety temperature classification change.

Transmitter installation

Mounting the transmitter

Mount the transmitter in liquid applications

Procedure

1. Place taps to the side of the line.
2. Note
   When mount the transmitter, verify the drain/vent valves are oriented upward.
   Mount the transmitter beside or below the taps.
   Figure 3-1: Coplanar and in-line liquid applications
   

Mount the transmitter in gas applications

Procedure

1. Place taps in the top or side of the line.
2. Mount the transmitter beside or above the taps.
   Figure 3-2: Coplanar and in-line gas applications
   

Mount the transmitter in steam applications

Procedure

1. Place taps to the side of the line.
2. Mount the transmitter beside or below the taps.
3. Fill impulse lines with water.
   Figure 3-3: Coplanar and in-line steam applications
   

Figure 3-4: Panel and pipe mounting

1. Panel mount (5/6 x 1½ panel bolts are customer supplied
2. Coplanar flange
3. Pipe mount
4. Traditional flange

Assemble the transmitter

If the transmitter installation requires assembly of the process flanges, manifolds, or flange adapters, follow the assembly guidelines to ensure a tight seal for optimal performance. Use only bolts supplied with the transmitter or sold by Emerson as spare parts. Figure 3-5 illustrates common transmitter assemblies with the required bolt lengths.

Figure 3-5: Common transmitter assemblies

1. Transmitter with coplanar flange
2. Transmitter with coplanar flange and optional flange adapters
3. Transmitter with traditional flange and optional flange adapters
4. Transmitter with coplanar flange and optional manifold and flange adapters

Bolts are typically Carbon Steel (CS) or Stainless Steel (SST). Confirm the material by viewing the markings on the head of the bolt and referencing Table 3-1. If bolt material is not shown in Table 3-1, contact a local Emerson representative for more information.

Table 3-1: Torque values for the flange and flange adapter bolts

Bolt material	Head markings			Initial torque	Final torque
CS				300 in-lb	650 in-lb
SST				150 in-lb	300 in-lb

CS bolts do not require lubrication, and SST bolts are coated with a lubricant to ease installation. When installing either type of bolt, do not apply additional lubricant.

Procedure

1. Finger-tighten the bolts.
2. Torque the bolts to the initial torque value using a crossingpattern.
   See Table 3-1 for initial torque value.
3. Torque the bolts to the final torque value using the samecrossing pattern.
   See Table 3-1 for final torque value.
4. Before applying pressure, verify that the flange bolts areprotruding through the isolator plate.

In-line gage transmitter orientation

The low side pressure port (atmospheric reference) on the in-line gage transmitter is located in the neck of the transmitter, behind the housing. The vent path is 360° around the transmitter between the housing and sensor. (See Figure 3-6)

Figure 3-6: In-line Gage Low Side Pressure Port

1. Low side pressure port (atmospheric reference)

Mounting the transmitter so that the process can drain away keeps the vent path free of any obstruction, including but not limited to paint, dust, and lubrication.

Consider housing rotation

To improve field access to wiring or to better view the optional LCD display:

Procedure

1. Loosen the housing rotation set screw using a 5/64" hex wrench.
2. Turn the housing left or right maximum up to 180° from its original position.⁽¹⁾
   Note
   Over-rotating can damage the transmitter.
3. When desired location is reached, re-tighten the housingrotation set screw to no more than 7 in‑lb.
   Figure 3-7: Housing Rotation Set Screw
   
   1. Housing rotation set screw (5/64")

(1) Rosemount 3051D original position aligns with "H" side; Rosemount 3051G original position is the opposite side of bracket holes.

Overrotation of housing may cause damage to module communication cable.

Set the switches

Procedure

1. Set alarm and security switch configuration before installation as shown in Figure 3-8.
   Figure 3-8: Transmitter Electronics Board
   
   1. Alarm
   2. Security
2. If the transmitter is installed, secure the loop and removepower.
3. Note
   Do not remove the instrument cover in explosive atmospheres when the circuit is live.
   Remove the housing cover opposite the field terminal side.
4. NOTICE
   The alarm switch sets the analog output alarm to High or Low. Default alarm is High.
   NOTICE
   The security switch allows (unlocked symbol) or prevents (locked symbol) any configuration of the transmitter. Default security is Off (unlocked symbol).
   Slide the security and alarm switches into the preferred position using a small screwdriver.
5. Note
   The cover must be fully engaged to comply with explosionproof requirements.
   Reattach the transmitter cover.

Connect the wiring and power up

Figure 3-9: Transmitter Wiring Diagrams (4–20 mA)

1. 24 Vdc supply
2. R_L≥ 250
3. Current meter (optional)

Shielded twisted pair cable should be used for best results. Use 24 AWG or larger wire that does not exceed 5,000 ft. (1500 m) in length. If applicable, install wiring with a drip loop. Arrange the drip loop so the bottom is lower than the conduit connections and the transmitter housing.

Installation of the transient protection terminal block does not provide transient protection unless the Rosemount 3051 case is properly grounded.
Do not run signal wiring in conduit or open trays with power wiring, or near heavy electrical equipment.
Do not connect the powered signal wiring to the test terminals. Power could damage the test diode in the terminal block.

To wire the transmitter:

Procedure

1. Remove the housing cover on the FIELD TERMINALS side.
2. Connect the positive lead to the "+" terminal (PWR/COMM) andthe negative lead to the "–" terminal.
3. Ground housing to fulfill local grounding regulations.
4. Ensure proper grounding. It is important that the instrument cable shield be:
   1. Trimmed close and insulated from touching the transmitter housing
   2. Connected to the next shield if cable is routed through a junction box
   3. Connected to a good earth ground at the power supplyend
5. If transient protection is needed, refer to "Grounding for transient terminal block" for grounding instructions.
6. Plug and seal unused conduit connections.
7. Replace the housing cover.

Figure 3-10: Wiring

1. Insulate shield and shield drain wire.
2. Insulate exposed shield drain wire.
3. Connect shield back to the power supply ground.

Grounding for transient terminal block

Ground termination is provided on the outside of the electronics housing and inside the terminal compartment. These grounds are used when the transient protection terminal blocks are installed. It is recommended that 18 AWG or larger wire is used to connect housing ground to earth ground (internal or external).

If the transmitter is currently not wired for power up and communication, follow Connect the wiring and power up. When the transmitter is properly wired, refer to Figure 3-10 for internal and external transient grounding locations.

Verifying configuration

Verify the configuration using any HART^®-capable configuration tool. Configuration instructions for a Field Communicator are included in this step. See Rosemount 3051 Reference Manual for configuration instructions using AMS Device Manager.

Verifying configuration with a Field Communicator

A Rosemount 3051 DD must be installed on the Field Communicator to verify configuration. Fast Key sequences for the latest DD are shown in Table 2-2. For Fast Key sequences using legacy DD's, contact your local Emerson representative.

Note
Emerson recommends installing the latest DD to access the complete functionality. Visit Field Communicator for information on updating the DD library.

Procedure

Verify device configuration using the Fast Key sequences in Table 2-2.

• A check (✓) indicates the basic configuration parameters. At minimum, these parameters should be verified as part of configuration and startup.
• A (7) indicates availability only in HART^® Revision 7 mode.

Note
See Figure 3-11 to confirm external button functionality.

Figure 3-11: Internal and External LOI Buttons

1. Internal buttons
2. External buttons

Verify configuration with local operator interface (LOI)

The optional local operator interface (LOI) can be used for commissioning the device. The LOI is a two button design with internal and external buttons. The internal buttons are located on the display of the transmitter, while the external buttons are located underneath the top metal tag. LOI button functionality is shown on the bottom corners of the display.

To activate the LOI, push any button. See Table 3-2 and Figure 3-12 for button operation and menu information.

Table 3-2: LOI Button Operation

Button
Left	No	SCROLL
Right	Yes	ENTER

Figure 3-12: LOI Menu

Switch HART^® revision mode

If the HART configuration tool is not capable of communicating with HART Revision 7, the Rosemount 3051 will load a generic menu with limited capability. The following procedures will switch the HART revision mode from the generic menu:

Procedure

Manual Setup → Device Information → Identification → Message

1. To change to HART Revision 5, Enter: "HART5" in the Messagefield
2. To change to HART Revision 7, Enter: "HART7" in the Messagefield

Trim the transmitter

Devices are calibrated by the factory. Once installed, it is recommended to perform a zero trim on gage and differential pressure transmitters to eliminate error due to mounting position or static pressure effects. A zero trim can be performed using either a Field Communicator or configuration buttons.

For instructions using AMS Device Manager, see the Rosemount 3051 Reference Manual.

Note
When performing a zero trim, ensure that the equalization valve is open and all wet legs are filled to the correct level.

Procedure

1. Choose your trim procedure.
   • Analog zero trim – Sets the analog output to 4 mA.
2. Also referred to as a "rerange," it sets the lower range value(LRV) equal to the measured pressure.
3. The display and digital HART output remains unchanged.
   • Digital zero trim – Recalibrates the sensor zero.
4. The LRV is unaffected. The pressure value will be zero (ondisplay and HART^® output). 4 mA point may not be at zero.
5. This requires that the factory calibrated zero pressure is withina range of 3% of the URV [0 + 3% x URV].
   Example: URV = 250 inH₂O Applied Zero Pressure = + 0.03 x 250 inH₂O = + 7.5 inH₂O (compared to factory settings) values outside this range will be rejected by the transmitter.

Trimming with a Field Communicator

Procedure

1. Connect the Field Communicator. See "Connect the wiring and power up" for instructions.
2. Follow the HART^® menu to perform the desired zero trim.
   Table 3-3: Zero Trim Fast Keys

   	Analog zero (Set 4 mA)	Digital zero
   Fast Key sequence	3, 4, 2	3, 4, 1, 3

   Figure 3-13: External Configuration Buttons
   
   1. LOI
   2. Analog zero and span
   3. Digital zero
   4. Configuration buttons
      Perform trim with LOI (option M4) for a zero trim.
3. Set the transmitter pressure.
4. See Figure 3-12 for the operating menu.
   1. Perform an analog zero trim by selecting Rerange.
   2. Perform a digital zero trim by selecting Zero Trim.

Safety instrumented systems installation

For safety certified installations, refer to the Rosemount 3051 Reference Manual for installation procedure and system requirements.

Safety messages

Explosions

Explosions could result in death or serious injury.

Installation of device in an explosive environment must be in accordance with appropriate local, national, and international standards, codes, and practices. Review the approvals section of the Rosemount 3051 Manual for any restrictions associated with a safe installation.

In an explosionproof/flameproof installation, do not remove the transmitter covers when power is applied to the transmitter.

Process leaks

Process leaks may cause harm or result in death.

To avoid process leaks, only use the O-ring designed to seal with the corresponding flange adapter.

Electrical shock

Electrical shock can result in death or serious injury.

Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock.

Conduit/cable entries

Unless otherwise marked, the conduit/cable entries in the housing enclosure use a ½–14 NPT form. Only use plugs, adapters, glands, or conduit with a compatible thread form when closing these entries.

Entries marked M20 are M20 x 1.5 thread form. On devices with multiple conduit entries, all entries will have the same thread form.

When installing in a hazardous location, use only appropriately listed or Ex certified plugs, glands, or adapters in cable/conduit entries.

Physical access

Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users' equipment. This could be intentional or unintentional and needs to be protected against.

Physical security is an important part of any security program and fundamental in protecting your system. Restrict physical access by unauthorized personnel to protect end users' assets. This is true for all systems used within the facility.