Emerson Rosemount 2088 Manuel utilisateur
Quick Start Guide
00825-0100-4690, Rev GD
February 2019
Rosemount™ 2088, 2090P, and 2090F
Pressure Transmitters
with 4–20 mA HART® and 1–5 Vdc HART
Low Power Protocol
Contents
Mount the transmitter................................... 3
Set the jumpers..............................................7
Connect the wiring and power....................... 9
Verify configuration..................................... 12
Trim the transmitter.................................... 14
Safety instrumented systems.......................16
Product Certifications.................................. 19
Rosemount 2088 and 2090 Declaration of
Conformity.................................................. 40
Quick Start Guide February 2019
2 Rosemount 2088, 2090P, and 2090F Pressure Transmitters
1 Mount the transmitter
1.1 Rosemount™ 2088
Mount directly to the impulse line without using an additional mounting
bracket or mount directly to a wall, panel, or two-inch pipe using an optional
mounting bracket.
1.2 Rosemount™ 2090P
Mount directly to the process pipe using an existing weld spud, or have a
skilled welder install a new weld spud using a TIG welder. Refer to Reference
Manual for complete welding instructions. Improper installation may result in
weld spud distortion. Recommended mounting in upright or horizontal
position to allow proper draining of vent.
1.3 Rosemount™ 2090F
Mount directly to the process pipe using a standard sanitary fitting (either a
1.5- or 2-in. Tri Clamp connection). Recommended mounting in upright or
horizontal position to allow proper draining of vent.
Figure 1-1: Transmitter Direct Mounting
Do not apply torque directly to the electronics housing. To avoid damage,
apply torque only to the hex-shaped process connection.
Rosemount
2088
Rosemount 2090P Rosemount
2090F
A. ½–14 NPT female process connection
B. Vessel wall
C. Weld spud
D. O-ring
E. 1½- or 2-in. Tri Clamp connection
February 2019 Quick Start Guide
Quick Start Guide 3
Figure 1-2: Panel and Pipe Mounting
Panel mount Pipe mount
1.4 Liquid flow applications
Transmitter mounting procedure for liquid flow applications.
Procedure
1. Place taps to the side of the line.
2. Mount beside or below the taps.
Example
1.5 Gas flow applications
Transmitter mounting procedure for gas flow applications.
Procedure
1. Place taps in the top or side of the line.
2. Mount level or above the taps.
Quick Start Guide February 2019
4 Rosemount 2088, 2090P, and 2090F Pressure Transmitters
Example
1.6 Steam flow applications
Transmitter mounting procedure for 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.
Example
1.7 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.
February 2019 Quick Start Guide
Quick Start Guide 5
1.8 Gage transmitter orientation
The low side pressure port (atmospheric reference) on the gage transmitters
with aluminum housings are 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 1-3.)
Keep the vent path free of any obstruction, including but not limited to paint,
dust, and lubrication by mounting the transmitter so that the process can
drain away.
Figure 1-3: Gage Low Side Pressure Port
A
A. Low side pressure port (atmospheric reference)
Quick Start Guide February 2019
6 Rosemount 2088, 2090P, and 2090F Pressure Transmitters
2 Set the jumpers
If alarm and security jumpers are not installed, the transmitter will operate
normally with the default alarm condition alarm high and the security off.
Procedure
1. If the transmitter is installed, secure the loop, and remove power.
2. Remove the housing cover opposite the field terminal side. Do not
remove the instrument cover in explosive atmospheres when the
circuit is live.
3. Ensure full contact with terminal block screw and washer. When using
a direct wiring method, wrap wire clockwise to ensure it is in place
when tightening the terminal block screw.
Note
The use of a pin or a ferrule wire terminal is not recommended as the
connection may be more susceptible to loosening over time or under
vibration.
4. Reposition the jumper. Avoid contact with the leads and the terminals.
See Figure 2-1 for the location of the jumper and the ON and OFF
positions.
5. Reattach the transmitter cover. The cover must be fully engaged to
comply with explosion-proof requirements.
Example
Figure 2-1: Rosemount 2088 Transmitter Electronics Board
Without LCD display With LCD display
Low power without LCD display Low power with LCD display
February 2019 Quick Start Guide
Quick Start Guide 7
A. Alarm
B. Security
Quick Start Guide February 2019
8 Rosemount 2088, 2090P, and 2090F Pressure Transmitters
3 Connect the wiring and power
Use the following steps to wire the transmitter:
Procedure
1. Remove the housing cover on the side marked field terminals.
2. Connect the positive lead to the “PWR/COMM+” terminal, and the
negative lead to the “–” terminal.
3. Ensure proper grounding. It is important that the instrument cable
shield:
•Be trimmed close and insulated from touching the transmitter
housing
•Be connected to the next shield if cable is routed through a
junction box
•Be connected to a good earth ground at the power supply end
Note
Installation of the transient protection terminal block does not provide
transient protection unless the Rosemount 2088 case is properly
grounded.
Note
Do not connect the powered signal wiring to the test terminals. Power
could damage the test diode in the test connection. Twisted pair cable
yields best results. For high EMI/RFI environments, shielded twisted
pair cable should be used. Use 24 AWG or larger wire and do not
exceed 5,000 ft. (1,500 m).
4. Plug and seal unused conduit connections.
5. 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.
6. Replace the housing cover.
Figure 3-1 and Figure 3-2 show wiring connections necessary to power
a Rosemount 2088 Transmitter and enable communications with a
hand-held Field Communicator:
February 2019 Quick Start Guide
Quick Start Guide 9
Example
Figure 3-1: Bench Hook-up Wiring Diagrams (4–20 mA Transmitters)
A. RL ≥ 250Ω
B. 24 Vdc supply
C. Current meter
Figure 3-2: Field Wiring for Rosemount 2088 — Low Power Option Code N
A. Voltmeter
B. Power supply
3.1 Power supply
The dc power supply (Option S: 10.5–42.4 V and Option N: 6–14 V) should
provide power with less than two percent ripple. The total resistance load is
the sum of the resistance of the signal leads and the load resistance of the
controller, indicator, and related pieces. The resistance of intrinsic safety
barriers, if used, must be included.
Quick Start Guide February 2019
10 Rosemount 2088, 2090P, and 2090F Pressure Transmitters
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