Emerson Rosemount MultiVariable 4088A User manual
Quick Start Guide
00825-0100-4088, Rev CA
April 2019
Rosemount™4088A MultiVariable™
Transmitter
with Modbus® Output Protocol
Safety messages
NOTICE
This guide provides basic guidelines for the Rosemount 4088 MultiVariable Transmitter. It does not
provide instructions for diagnostics, maintenance, service, or troubleshooting. Reference the 4088
MultiVariable Transmitter Reference Manual for more instruction. All documents are available
electronically at Emerson.com/Rosemount.
Procedures and instructions in this section may require special precautions to ensure the safety of the
personnel performing the operation. Information that raises potential safety issues is indicated with a
warning symbol ( ). Refer to the following safety messages before performing an operation
preceded by this symbol.
WARNING
Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with the
appropriate local, national, and international standards, codes, and practices. Review the
approvals section of the 4088 MultiVariable Transmitter Reference Manual for any restrictions
associated with a safe installation.
•Before connecting a Field Communicator in an explosive atmosphere, ensure the instruments
in the loop are installed in accordance with intrinsically safe or non-incendive field wiring
practices.
•In an Explosion-proof/Flameproof installation, do not remove the transmitter covers when
power is applied to the unit.
Process leaks may cause harm or result in death.
Install and tighten process connectors before applying pressure.
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 marked, the conduit/cable entries in the transmitter housing use a 1/2–14 NPT thread
form. Entries marked “M20” are M20 x 1.5 thread form. On devices with multiple conduit
entries, all entries will have the same thread form. Only use plugs, adapters, glands, or
conduit with a compatible thread form when closing these entries.
•When installing in a hazardous location, use only appropriately listed or Ex certified plugs,
adapters, or glands in cable/conduit entries.
Contents
Steps required for quick installation............... 3
Mount the transmitter................................... 4
Consider housing rotation............................11
Set the switches...........................................13
Wiring and power up ...................................14
Verify device configuration.......................... 21
Trim the transmitter.................................... 25
Product certifications...................................27
Quick Start Guide April 2019
2 Rosemount 4088A MultiVariable Transmitter Quick Start Guide
1 Steps required for quick installation
•Start >
•Mount the transmitter: Mount the Transmitter
•Consider housing rotation: Consider Housing Rotation
•Set the switches: Set the Switches
•Wiring and power up : Wiring and Power Up
•Verify device configuration: Verify Device Configuration
•Trim the transmitter: Trim the Transmitter
•> Finish
April 2019 Quick Start Guide
Quick Start Guide 3
2 Mount the transmitter
2.1 Liquid flow applications
Procedure
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Mount the transmitter so that the drain/vent valves are oriented
upward.
A
A. Direction of flow
2.2 Gas flow applications
Procedure
1. Place taps in the top or side of the line.
2. Mount beside or above the taps.
A
A. Direction of flow
Quick Start Guide April 2019
4 Rosemount 4088A MultiVariable Transmitter Quick Start Guide
2.3 Steam flow applications
Procedure
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Fill impulse lines with water.
A
A. Direction of flow
2.4 Mounting brackets
Figure 2-1: Mounting Bracket – Coplanar Flange
Panel mount Pipe mount
April 2019 Quick Start Guide
Quick Start Guide 5
Figure 2-2: Mounting Brackets – Traditional Flange
Panel mount Pipe mount
Figure 2-3: Mounting Brackets – In-line
Panel mount Pipe mount
2.5 Bolting considerations
If the transmitter installation requires assembly of a process flange,
manifold, or flange adapters, follow these assembly guidelines to ensure a
tight seal for optimal performance characteristics of the transmitter. Only
use bolts supplied with the transmitter or sold by Emerson™ as spare parts.
Figure 2-4 illustrates common transmitter assemblies with the bolt length
required for proper transmitter assembly.
Quick Start Guide April 2019
6 Rosemount 4088A MultiVariable Transmitter Quick Start Guide
Figure 2-4: Common Transmitter Assemblies
A
4 × 1.75-in.
(44 mm)
D
4 × 1.75-in.
(44 mm)
4 × 2.25-in.
(57 mm)
C
4 ×1.75-in.
(44 mm) 4 ×1.50-in.
(38 mm)
B
4 × 2.88-in.
(73 mm)
A. Transmitter with coplanar flange
B. Transmitter with coplanar flange and optional flange adapters
C. Transmitter with traditional flange and optional flange adapters
D. Transmitter with coplanar flange and optional Rosemount Conventional
Manifold and flange adapters
Note
For all other manifolds, contact Customer Central technical support.
Bolts are typically carbon steel or stainless steel. Confirm the material by
viewing the markings on the head of the bolt and referencing Table 2-1 . If
bolt material is not shown in Table 2-1, contact the local Emerson
representative for more information.
Use the following bolt installation procedure:
Procedure
1. Carbon steel bolts do not require lubrication and the stainless steel
bolts are coated with a lubricant to ease installation. However, no
additional lubricant should be applied when installing either type of
bolt.
2. Finger-tighten the bolts.
3. Torque the bolts to the initial torque value using a crossing pattern.
See Table 2-1 for initial torque value.
4. Torque the bolts to the final torque value using the same crossing
pattern. See Table 2-1 for final torque value.
April 2019 Quick Start Guide
Quick Start Guide 7
5. Verify the flange bolts are protruding through the sensor module
before applying pressure (see Figure 2-5).
Example
Table 2-1: Torque Values for the Flange and Flange Adapter Bolts
Bolt material Head markings Initial torque Final torque
Carbon Steel
(CS)
B7M
300 in-lb 650 in-lb
Stainless Steel
(SST)
316
316
316
SW
316
STM
316
R
B8M
150 in-lb 300 in-lb
Figure 2-5: Proper Bolt Installation
A
B
A. Bolt
B. Sensor module
Quick Start Guide April 2019
8 Rosemount 4088A MultiVariable Transmitter Quick Start Guide
2.6 O-rings with flange adapters
WARNING
Failure to install proper flange adapter O-rings may cause process leaks,
which can result in death or serious injury. Only use the O-ring that is
designed for its specific flange adapter.
A
B
C
D
A. Flange adapter
B. O-ring
C. PTFE-based profile (square)
D. Elastomer profile (round)
Whenever the flange or adapters are removed, visually inspect the O-rings.
Replace them if there are any signs of damage, such as nicks or cuts. If the O-
rings are replaced, re-torque the flange bolts and alignment screws after
installation to compensate for seating of the O-rings.
2.7 Environmental seal for housing
Thread sealing (PTFE) tape or paste on male threads of conduit is required to
provide a water/dust tight conduit seal and meets requirements of NEMA®
Type 4X, IP66, and IP68. Consult factory if other Ingress Protection ratings
are required. For M20 threads, install conduit plugs to full thread
engagement or until mechanical resistance is met.
2.8 In-line gage transmitter orientation
The low side pressure port (atmospheric reference) on the in-line gage
transmitter is located under the sensor module neck label. (See Figure 2-6)
Keep the vent path free of any obstruction, including but not limited to
paint, dust, and lubrication by mounting the transmitter so that any
contaminants can drain away.
April 2019 Quick Start Guide
Quick Start Guide 9
Figure 2-6: In-line Gage Transmitter
A
A. Low side pressure port (under neck label)
Quick Start Guide April 2019
10 Rosemount 4088A MultiVariable Transmitter Quick Start Guide
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