Emerson Rosemount 2088 User manual

Quick Start Guide
00825-0100-4690, Rev FD
September 2017
Rosemount™2088, 2090P, and 2090F
Pressure Transmitters
with 4–20 mA HART®and 1–5 Vdc HART Low Power
Protocol
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Quick Start Guide
NOTICE
This installation guide provides basic guidelines for the Rosemount 2088 and 2090 transmitters. It does not
provide instructions for configuration, diagnostics, maintenance, service, troubleshooting, Explosion-proof,
Flameproof, or intrinsically safe (I.S.) installations. Refer to the Rosemount 2088/2090 Reference Manual for
more instruction and low power output. This manual is also available electronically on
Emerson.com/Rosemount.
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 Rosemount
2088/2090 Reference Manual for any restrictions associated with a safe installation.
Before connecting a HART-based communicator in an explosive atmosphere, make sure 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.
Use appropriately rated sanitary clamps and gaskets during installation.
The maximum working pressure of the clamp and gasket must be greater than or equal to the working
pressure range of the transmitter.
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.
Contents
Mount the transmitter . . . . . . . . . . . . . . . . . . . . 3
Set the jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connect the wiring and power . . . . . . . . . . . . . 6
Verify configuration . . . . . . . . . . . . . . . . . . . . . . 8
Trim the transmitter . . . . . . . . . . . . . . . . . . . . . . 9
Safety instrumented systems . . . . . . . . . . . . . 10
Product Certifications . . . . . . . . . . . . . . . . . . . . 13
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1.0 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. 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. 1/2–14 NPT female process connection
B. Vessel wall
C. Weld spud
D. O-ring
E. 11/2- or 2-in. Tri Clamp connection
1.5 in.
B
C
BD
1.0 in.
E
A
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Figure 2. Panel and Pipe Mounting
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.
Panel mount Pipe mount
1.4 Liquid flow applications
1. Place taps to the side of the line.
2. Mount beside or below the taps.
1.5 Gas flow applications
1. Place taps in the top or side of the line.
2. Mount level or above the taps.
1.6 Steam flow applications
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Fill impulse lines with water.
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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 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 3. Gage Low Side Pressure Port
A. Low side pressure port (atmospheric reference)
2.0 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.
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 4 for the location of the jumper and the ON and OFF positions.
A
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5. Reattach the transmitter cover. The cover must be fully engaged to comply
with explosion-proof requirements.
A. Alarm
B. Security
3.0 Connect the wiring and power
Use the following steps to wire the transmitter:
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.
Figure 4. Rosemount 2088 Transmitter Electronics Board
Without LCD display With LCD display
Low power without LCD display Low power with LCD display
B
A
B
A
A
B
B
A
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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 5 and Figure 6 show wiring connections necessary to power a Rosemount
2088 Transmitter and enable communications with a hand-held Field
Communicator:
Figure 5. Bench Hook-up Wiring Diagrams (4–20 mA Transmitters)
A. RL≥250Ω
B. 24 Vdc supply
C. Current meter
Figure 6. 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.
C
B
A
B
A
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Figure 7. Maximum Loop Resistance = 43.5 ⫻(Power Supply Voltage – 10.5)
The Field Communicator requires a minimum loop resistance of 250Ωfor communication.
4.0 Verify configuration
A check () indicates the basic configuration parameters. At minimum, these
parameters should be verified as part of the configuration and startup procedure.
Function HART Fast Key sequence
Analog Output Alarm 1, 4, 3, 2, 4
Burst Mode Control 1, 4, 3, 3, 3
Burst Option 1, 4, 3, 3, 4
Calibration 1, 2, 3
Damping 1, 3, 5
Date 1, 3, 4, 1
Descriptor 1, 3, 4, 2
Digital To Analog Trim (4–20 mA Output) 1, 2, 3, 2, 1
Disable Local Span/Zero Adjustment 1, 4, 4, 1, 7
Field Device Info 1, 4, 4, 1
Keypad Input 1, 2, 3, 1, 1
Loop Test 1, 2, 2
Lower Range Value 4, 1
Lower Sensor Trim 1, 2, 3, 3, 2
Message 1, 3, 4, 3
Meter Type 1, 3, 6, 1
Number of Requested Preambles 1, 4, 3, 3, 2
Output Trim 1, 2, 3, 2
Percent Range 1, 1, 2
Poll Address 1, 4, 3, 3, 1
Range Values 1, 3, 3
Rerange 1, 2, 3, 1
Voltage (Vdc)
Load (Ohms)
Operating
region
1387
1000
500
0
10.5 20 30
42.4
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5.0 Trim the transmitter
Note
Transmitters are shipped fully calibrated per request or by the factory default of full scale
(span = upper range limit).
5.1 Zero trim
A zero trim is a single-point adjustment used for compensating mounting
position effects. If zero offset is less than 3 percent of true zero, follow the Using
the Field Communicator instructions below. If zero offset is greater than 3
percent of true zero, follow the Using the transmitter zero adjustment button
instructions below to rerange.
Using the Field Communicator
Using the transmitter zero adjustment button
Scaled D/A Trim (4–20 mA Output) 1, 2, 3, 2, 2
Self Test (Transmitter) 1, 2, 1, 1
Sensor Info 1, 4, 4, 2
Sensor Trim (Full Trim) 1, 2, 3, 3
Sensor Trim Points 1, 2, 3, 3, 5
Status 1, 2, 1, 2
Tag 1, 3, 1
Transmitter Security (Write Protect) 1, 3, 4, 4
Units (Process Variable) 1, 3, 2
Upper Range Value 5, 2
Upper Sensor Trim 1, 2, 3, 3, 3
Zero Trim 1, 2, 3, 3, 1
Fast Keys Steps
1, 2, 3, 3, 1
1. Vent the transmitter and connect Field Communicator.
2. At the menu, input the HART Fast Key sequence.
3. Follow the commands to perform a zero trim.
1. Loosen the certifications label screw and rotate the label to
expose the zero adjustment button.
2. Apply the desired pressure for the 4 mA output.
3. Set the 4 mA point by pressing the zero button for two
seconds. Verify that the output is 4 mA. The optional LCD
display will show “ZERO PASS”.
A. Zero adjustment button
Function HART Fast Key sequence
A
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6.0 Safety instrumented systems
The following section applies to Rosemount 2088 Transmitters used in SIS
applications.
Note
Transmitter output is not safety-rated during the following: configuration changes,
multidrop, loop test. Alternative means should be used to ensure process safety during
transmitter configuration and maintenance activities.
6.1 Installation
No special installation is required in addition to the standard installation practices
outlined in this document. Always ensure a proper seal by installing the
electronics housing cover(s) so that metal contacts metal.
The loop must be designed so the terminal voltage does not drop below 10.5 Vdc
when the transmitter output is 22.5 mA.
Position the security switch to the “ON” position to prevent accidental or
deliberate change of configuration data during normal operation.
6.2 Configuration
Use any HART-compliant master to communicate with and verify configuration of
the Rosemount 2088.
User-selected damping will affect the transmitters ability to respond to changes
in the applied process. The damping value + response time must not exceed the
loop requirements.
Note
DCS or safety logic solver must be configured to match transmitter configuration. Figure 8
identifies the two alarm levels available and their operation values. Position the alarm
switch to the required HI or LO alarm position.
Figure 8. Alarm Levels
Rosemount alarm level
Namur alarm level
1. Transmitter Failure, hardware alarm in LO position.
2. Transmitter Failure, hardware alarm in HI position.
Normal
Operation
4 mA 20 mA 20.8 mA
high saturation
21.75 mA(2)
3.9 mA
low saturation
3.75mA(1)
Normal
Operation
4 mA 20 mA 20.5 mA
high saturation
22.5 mA(2)
3.8 mA
low saturation
3.6 mA(1)
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