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326P Pressure Transmitter
Quick Start Guide
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Rosemount 326P Pressure Transmitter Quick Start Guide

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Page 1
Quick Start Guide
00825-0100-4327, Rev 02
August 2020
Rosemount™ 326P Pressure Transmitter
Page 2
Quick Start Guide August 2020
Contents
Introduction.................................................................................................................................3
Installation................................................................................................................................. 10
Operation...................................................................................................................................14
Setting ranges............................................................................................................................35
Troubleshooting........................................................................................................................ 43
Product certifications................................................................................................................. 45
Factory settings..........................................................................................................................46
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August 2020 Quick Start Guide

1 Introduction

The pressure transmitter measures and monitors pressure in a facility.

1.1 Pressure specifications

To ensure product performance and safety, adhere to the following specifications.

1.1.1 Measuring range

This table shows the range at which the pressure transmitter is able to measure pressure.
Pressure range Measuring range limits
inH2O mbar
1A -2.0 to 40 -5 to 99.5
2A -5.0 to 100 -12.4 to 248.8
psi bar
3A -14.5 to 14.5 -1 to 1
2B -0.73 to 14.5 -0.05 to 1
4A -1.45 to 20 -0.1 to 1.38
5A -1.8 to 36 -0.124 to 2.48
6A -14.5 to 55 -1 to 3.79
7A -14.5 to 85 -1 to 5.86
8A -14.5 to 145 -1 to 10
9A -14.5 to 230 -1 to 15.9
1B -14.5 to 360 -1 to 24.8
Note
The pressure transmitter is vacuum resistant. There are restrictions for nominal pressure ranges at or below 4.35 psi (300 mbar). Adhere to the specifications in the data sheet.
Quick Start Guide 3
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1.1.2 Overpressure limits

The table in this topic shows maximum allowable pressure for the pressure transmitter.
CAUTION
Take appropriate measures to avoid exceeding the specified overpressure limits.
Pressure range Overpressure limits
inH2O bar
1A 1606 4
2A 2400 6
psi bar
3A 145 10
2B 145 10
4A 215 15
5A 290 20
6A 435 30
7A 435 30
8A 725 50
9A 1085 75
1B 1450 100

1.1.3 Burst pressure limits

The burst pressure limit is the pressure at which the pressure transmitter will no longer function or be damaged.
CAUTION
Do not exceed the burst pressure limit. Exceeding the burst pressure limit can damage the pressure transmitter. Continuing to use the pressure transmitter after exceeding the burst pressure limit can cause damage and physical injury.
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Pressure range Burst pressure limits
inH2O bar
1A 12044 30
2A 12044 30
psi bar
3A 435 30
2B 435 30
4A 580 40
5A 725 50
6A 1450 100
7A 1450 100
8A 2175 150
9A 3625 250
1B 5075 350

1.2 Operating modes

The wiring configuration sets the operating mode. After wiring the pressure transmitter, it automatically recognizes the connections and changes to the respective operating mode.
For more information, see Electrical connection.

1.2.1 Two-wire operation

OUT2 (pin 2)
The analog signal proportional to pressure (4-20 mA or 20-4 mA).

1.2.2 Three-wire operation

OUT1 (pin 4)
OUT2 (pin 2)
Switching signal for system pressure limit value
• Switching signal used for system pressure limit value
• Analog signal proportional to pressure (4-20 mA or 20-4
mA)
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1.3 Functions

The Rosemount 326P Pressure transmitter performs the functions described in this section.

1.3.1 Switching function

The switching function is available only for three-wire operations. OUT1 or OUT2 changes its switching status if the pressure is above or below the set switching limits (SPx, rPx). These switching functions are available:
• Hysteresis function/normally open: OUx = Hno (Figure 1-1)
• Hysteresis function/normally closed: OUx = Hnc (Figure 1-1)
First set the set point (SPx), then the reset point (rPx) with the requested difference.
• Window function/normally open: OUx = Fno (Figure 1-2)
• Window function/normally closed: OUx = Fnc (Figure 1-2)
Set the width of the window using the difference between SPx and rPx. SPx is the upper value and rPx is the lower value.
Figure 1-1: Hysteresis function
• SP: Set point
• rP: Reset point
• P: Pressure
• Hy: Hysteresis
• Hno: Hysteresis function/normally
open
• Hnc: Hysteresis function/normally
closed
Figure 1-2: Window function
• FE: Window
• Fno: Window function/normally
open
• Fnc: Window function/normally
closed
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1.3.2 Analog signal

The transmitter communicates measured pressure using an analog signal.
OU2 defines whether the set measuring range is provided as 4-20 mA (OU2 = I) or as 20-4 mA (OU2 = InEG).
Rerange the transmitter (set new values for ASP and AEP) by either manually entering range points or with an applied pressure source.
• Applying a pressure source for the analog start point (tASP) or manually
setting the parameter (ASP) defines the measured value when the analog signal is 4 mA (20 mA at InEG).
• Applying a pressure source for the analog end point (tASP) or manually
setting the parameter (ASP) defines the measured value when the output signal is 20 mA (4 mA at InEG).
Minimum distance between ASP and AEP is 25 percent of the upper range limit (maximum rangedown 4:1). For pressure range 3A, the minimum distance is 25 percent of the measuring span.
Figure 1-3: Factory setting
Figure 1-4: Transmitter reranged
P: system pressure
MAW: initial value of the measuring range (Lower range limit [LRL])
MEW: final value of the measuring range (Upper range limit [URL])
1: OU2 = I
2: OU2 = InEG
In the set measuring range the output signal is between 4 and 20 mA (OU2 = I) or between 20 and 4 mA (OU2 = InEG). When pressure is outside the set measuring range, the output signal is as follows:
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• System pressure above the measuring range: — Output signal > 20 mA if OU2 = I.
— Output signal 4 to 3.8 mA if OU2 = InEG.
• System pressure below the measuring range: — Output signal 4 to 3.8 mA if OU2 = I.
— Output signal > 20 mA if OU2 = InEG.

1.3.3 Customer-specific calibration (sensor trim)

A customer specific calibration (sensor trim) corrects the pressure offset and pressure range to match a pressure standard. This provides a slope correction to the transmitter's current characterization curve. An accurate pressure standard is required for a full calibration. For more information on performing a Sensor Trim, see Perform a sensor trim.
• Sensor Trim is a two-point sensor calibration that applies two end-point
pressures (CP1, CP2) then linearizes the output between them. CP1 and CP2 must be within the scaled measuring range. For more information, see Analog signal.
• Zero trim is a single-point offset adjustment. It compensates for
mounting position effects and is most effective when performed with the transmitter installed in its final mounting position. Since zero trim maintains the slope of the characterization curve, do not use it in place of a Sensor Trim over the full sensor range. For more information, see
Perform manual zero trim.
Reset the calibration by resetting all parameters to the factory default settings. For more information, see Resetting all parameters to factory
default settings.
P: measured pressure
•
P‘: modified measured value
• CP1: calibration point 1
CP1‘: modified measured value for CP1
• CP2: calibration point 2
• 1: curve of measured values at
factory setting
• 2: curve of measured values after
calibration
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• P: measured pressure
P‘: modified measured value
• CP1: calibration point 1
CP2: calibration point 2 CP2‘: modified measured value for
CP2
• 1: curve of measured values at
factory setting
• 2: curve of measured values after
calibration
• P: measured pressure
P‘: modified measured value
• CP1: calibration point 1
CP1‘: modified measured value for CP1
• CP2: calibration point 2
CP2‘: modified measured value for CP2
• 1: curve of measured values at
factory setting
• 2: curve of measured values after
calibration
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2 Installation

This section contains instructions for installing and wiring the Rosemount 326P Pressure Transmitter.
Note
Before installing or removing the unit, ensure no pressure is applied to the system. Note that when the pressure transmitter displays 0%, pressure might still be applied to the system.

2.1 Installation orientation (3-A® standards)

For optimized cleaning of the measuring element in hygienic areas according to the 3-A standards, follow these guidelines when installing the pressure transmitter.
To ensure the medium can run off the measuring element, do not install the unit at the lowest point of a pipe or container.
Note
This product is not suitable for use where the criteria for paragraph E1.2 / 63-03 of the 3-A® standard 63-03 must be met.

2.2 Installing with EHEDG standards

CAUTION
The unit is suited for CIP (cleaning in process) when installed correctly.
• Observe the application limits (temperature and material resistance)
according to the data sheet.
• Ensure the sensor is integrated into the system according to EHEDG: — Use self-draining installation.
— Only use process adapters permitted according to EHEDG with
special seals required by the EHEDG position paper.
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CAUTION
The gasket of the system interface must not be in contact with the sealing point of the sensor.
• In case of structures in a tank, the installation must be flush mount. If not
possible then direct water jet cleaning and cleaning of dead spaces must be possible.
• Leakage ports must be clearly visible and must be installed facing
downwards for vertical pipes.
• To avoid dead space, adhere to the dimensions: L < D.
A. Leakage port
2.3
2.4

Hygienic process connection adapter installation

Hygienic process connection adapters allow the transmitter to be installed according to application requirements. All connection adapters include an EPDM O-ring. More sealing rings are available to be ordered as accessories. See the Rosemount 326P Product Data Sheet for all available connectors and accessories. Hygienic process connection adapters include installation instructions with the packaging.

Electrical connection

This section provides instructions for wiring the pressure transmitter. A qualified electrician must wire the pressure transmitter. The electrical installation must adhere to national and international regulations.
Voltage supply according to EN 50178, SELV, PELV.
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2.4.1 Wiring for two-wire operation

Follow these steps to wire the pressure transmitter for two-wire operation.
Procedure
1. Disconnect the power.
2. Wire the pressure transmitter according to Figure 2-1.
Figure 2-1: Connection for two-wire operation
BN Brown
WH White
OUT Analog output (4-20 mA)
Colors to DIN EN 60947-5-2

2.4.2 Wiring for three-wire operation

Follow these steps to wire the pressure transmitter for three-wire operation.
Procedure
1. Disconnect the power.
2. Wire the pressure transmitter according to Figure 2-2.
Figure 2-2: Connection for three-wire operation
BK
BN Brown
BU Blue
WH White
Black
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OUT1 Switching output
OUT2 Switching output or analog output
(4-20 mA)
Colors to DIN EN 60947-5-2
Wiring examples
2 x positive switching 2 x negative switching
1 x positive switching / 1 x analog 1 x negative switching / 1 x analog
Note
If the analog signal current (I) is selected in the menu under OU2 and the output is not connected (resistor = infinite), the pressure transmitter displays the error message W532 in intervals. This does not affect the measuring result. As an alternative, configure OU2 to a switching output.
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3 Operation

This section provides instructions for configuring parameter settings.

3.1 Display and function buttons

The pressure transmitter displays information using the display and can be controlled using the function buttons.
1 to 8: Indicator LEDs
LED 1 to LED 5 System pressure in the set unit of measurement.
LED 6 If OU2 is configured as an analog output, it indicates the
LED 7 Switching status of OUT2 (illuminates when output 2 is
LED 8 Switching status of OUT1 (illuminates if output 1 is switched).
9: Alphanumeric display, 4 digits
• Current system pressure
• Parameters and parameter values
system pressure in percent of the scaling of the analog output (range ASP to AEP). If OU2 is configured as a switching output, it indicates the system pressure in percent of the upper range limit (URL).
switched).
10: Set button
Selects a parameter from the menu and modifies the value by holding pressed for five seconds.
11: Mode/Enter button
Scrolls through the menu and acknowledges parameter values.
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3.1.1 Read the set parameters

Follow these steps to view the set parameter values.
Procedure
1. Press Mode/Enter until the pressure transmitter displays the desired parameter.
2. Press Set. The pressure transmitter displays the value currently set for the selected parameter for 15 seconds then returns to run mode.

3.1.2 Change the display in run mode

Follow these steps to view the pressure measurement in different indicator types. During normal operation, the pressure transmitter displays the pressure measurement in the selected unit of measurement.
Procedure
• Press Set.
The pressure transmitter displays the following information for 15 seconds:
— System pressure in percent of the set scaling of the analog output if
OU2 is configured as analog output.
— System pressure in percent of the upper range limit if OU2 is
configured as switching output.
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3.2 Menu

This section explains the pressure transmitter menu options and structure.

3.2.1 Main menu structure

The main menu includes options for accessing other menus, setting output functions, and changing the display mode.
Figure 3-1: Main menu
• 1: Change to the extended functions menu (level 2)
• Menu items highlighted gray are not available for two-wire operation.
Option
(1)
SP1/rP1
(1)
OU1
Description
Upper and lower limit values for system pressure at which OUT1 switches.
Output function for OUT1: Switching signal for the pressure limit values: hysteresis function (H ..) or window function (F ..), either normally open (. no) or normally closed (. nc).
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Option Description
OU2 Output function for OUT2:
• Switching signal for the pressure limit values: hysteresis
function (H ..) or window function (F ..), either normally open (. no) or normally closed (. nc); (only available for three-wire operation).
• analog signal for the current system pressure: 4-20 mA (I),
20-4 mA (InEG).
tCOF Perform Zero Trim.
tASP Set analog start point (4 mA if OU2 = I, 20 mA if OU2 = InEG) using
an applied pressure source.
tAEP Set analog end point (20 mA if OU2 = I, 4 mA if OU2 = InEG) using
an applied pressure source.
(1)
SP2/rP2
Upper and lower limit values for system pressure at which OUT2 switches.
EF Extended functions and opening the extended functions menu
(level 2).
(1) Not active in a two-wire operation.
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3.2.2 Extended functions menu

The extended functions menu provides options for configuring pressure transmitter parameters.
Figure 3-2: Extended functions menu (level 2)
• 1: Change to the main menu
• 2: Change to the simulation menu
Menu items highlighted gray are not available for two-wire operation.
Table 3-1: Extended functions menu options
Option Description
Uni Standard unit of measurement for system pressure
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Table 3-1: Extended functions menu options (continued)
Option Description
SELd Display mode:
1. Pressure in the unit set in Uni
2. Pressure in percent of the set scaling of the analog output
ASP Analog start point for system pressure: measured value at which 4
mA is provided (20 mA if OU2 = InEG)
AEP Analog end point for system pressure: measured value at which 20
mA is provided (4 mA if OU2 = InEG)
HI Highest measured system pressure
LO Lowest measured system pressure
COF Zero trim
(1)
dS1
dr1
dS2
(1)
(1)
Switch-on delay for OUT1
Switch-off delay for OUT1
Switch-on delay for OUT2; only active if OU2 = Hnc, Hno, Fnc or Fno
(1)
dr2
Switch-off delay for OUT2; only active if OU2 = Hnc, Hno, Fnc or Fno
(1)
FOU1
Status of output 1 in case of an internal fault
FOU2 Status of output 2 in case of an internal fault
(1)
P-n
Switching logic for the outputs: pnp or npn
dAP Damping for switching outputs and display
dAA Damping for analog output (OUT2)
diS Update rate and orientation of the display
CAL Calibration function (setting the curve of measured values)
CP1 Calibration point 1
CP2 Calibration point 2
SIM Switch to the simulation menu (level 3)
rES Restore factory default settings
(1) Not active in a two-wire operation.
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3.2.3 Simulation menu

The simulation menu provides options for configuring and executing transmitter simulations.
Figure 3-3: Simulation menu (SEL=OU)
The options shown appear when SEL is set to OU.
Table 3-2: Simulation menu (SEL=OU)
Option Description
SEL Status to be simulated. Output functions OU.
(1)
S.OU1
S.OU2 Simulation values for OUT2; only active if SEL = OU.
Simulation values for OUT1; only active for three-wire operation and if SEL = OU.
• OPEN: Output inactive
• CLOS: Output active
• For three-wire operation and if OUT2 has been configured as
switching output: output inactive (OPEN) or active (CLOS).
• If OUT2 is set as an analog output: analog signal between 3.6
and 21.1 mA
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Table 3-2: Simulation menu (SEL=OU) (continued)
Option Description
S.TIM Time for the simulation process in minutes.
S.ON Starts the simulation process.
(1) Not active in two-wire operation
During the simulation process the display alternately shows SIM and the current operation indication.
If the simulation process is aborted, the pressure transmitter displays S.OFF for two seconds, then SEL is active again.
Figure 3-4: Simulation menu (SEL = Proc)
The options shown appear when SEL is set to OU.
Table 3-3: Simulation menu (SEL = Proc)
Option Description
SEL Status to be simulated: Process value Proc.
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Table 3-3: Simulation menu (SEL = Proc) (continued)
Option Description
S.Pr Simulation of a process value; active only if SEL = Proc. Any value
S.TIM Time for the simulation process in minutes.
S.ON Starts the simulation process.
between lower and upper range limits (LRL and URL).
During the simulation process the display alternately shows SIM and the current operation indication.
If the simulation process is aborted, the pressure transmitter displays S.OFF for two seconds, then SEL is active again.

3.3 Parameter settings

This section provides instructions for modifying parameter values. While modifying parameter values, the pressure transmitter remains in operating mode. It continues to monitor pressure levels using the existing parameter values until the new parameter values are set. The pressure transmitter changes the parameter values immediately for COF, CP1, and CP2.

3.3.1 Modify parameter settings

Follow these steps to modify parameter values.
Procedure
1. Press Mode/Enter to select a parameter.
2. Press and hold Set. The pressure transmitter flashes the current value for five seconds.
3. Modify the parameter value.
• Press Set to change the value incrementally.
• Press and hold Set to change the value continuously.
• To reduce the value, continue to press Set until the pressure
transmitter reaches the value limit and restarts at the value minimum.
4. Press Mode/Enter. The pressure transmitter displays the parameter and saves the new parameter value.
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Switching menu levels
Follow these steps to change from the main menu to the extended functions menu.
Procedure
1. Press Mode/Enter until the pressure transmitter displays EF.
2. Press Set. The pressure transmitter displays Uni.
3. If the extended menu is locked with an access code, enter the access code.
a) Press Set until the pressure transmitter displays the valid
access code.
b) Press Mode/Enter.
By default the extended functions menu is unlocked.
Locking and unlocking the pressure transmitter
Follow these steps to lock or unlock the pressure transmitter. While locked, the pressure transmitter does not allow parameter values to change and displays Loc if attempted.
Procedure
1. To lock: press and hold Mode/Enter and Set for 10 seconds. The pressure transmitter locks and displays Loc.
2. To unlock: press and hold Mode/Enter and Set for 10 seconds while the pressure transmitter is locked. The pressure transmitter unlocks and displays uLoc.

3.3.2 Configuring the display

This section provides instructions for changing how the pressure transmitter displays pressure data.
Change the unit of measurement
Follow these steps to change the unit of measurement in which the pressure transmitter displays process pressure.
Procedure
1. Select Uni from the extended functions menu.
2. Press and hold Set to modify the parameter value.
3. Select a unit of measurement.
• For bar or mbar, select bAr or mbAr
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• For mPa or kPa, select MPA or kPA
• For psi, select PSI (only available with pressure ranges 3A, 5A, 6A,
8A, 1B, 2B)
• For InH2O, select IH2O (only available with pressure ranges 1A,
2A, 3A, 5A, 2B)
• For mWS, select mWS (only available with pressure ranges 3A,
5A, 2B)
• For mmWS, select mmWS (only available with pressure ranges
1A, 2A)
4. Press Mode/Enter.
Change the indication type
Follow these steps to change how the pressure transmitter displays pressure level.
Procedure
1. Select SELd from the extended functions menu.
2. Press and hold Set to modify the parameter value.
3. Select a type of indication.
• P: system pressure in the unit set in Uni.
• P%: system pressure in percent of the set scaling of the analog
output; the following applies: 0% = ASP value ; 100% = AEP value. If OU2 is configured as switching output, ASP and AEP are not active. In this case the following applies: 0% = lower range limit (LRL) / 100% = upper range limit (URL).
4. Press Mode/Enter.
Note
Pressure may still be applied to the system if the pressure transmitter shows 0% pressure.
Change the update rate and display orientation
The update rate sets how often the pressure transmitter displays new data. The diS parameter also sets the orientation of the display. Follow these steps to change the update rate and orientation of the display.
Procedure
1. Select diS from the extended functions menu.
2. Press and hold Set to modify the parameter value.
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3. Select an update rate or an update rate with a rotated display.
• d1: Updates the measured values every 50 ms.
• d2: Updates the measured values every 200 ms.
• d3: Updates the measured values every 600 ms.
• rd1, rd2, rd3: Rotates the display by 180° and selects the
corresponding update rate.
• OFF: Deactivates the display while in run mode. When a button is
pressed, the pressure transmitter displays the system pressure for 15 seconds. Pressing Mode/Enter again activates the display. The LED indicators remain active when the display is deactivated. Also, the pressure transmitter displays error messages when the display is deactivated.

3.3.3 Set output signals

This section provides instructions for setting output functions and limits.
Setting output functions
Follow these steps to set the function of output 1 and output 2.
Procedure
1. Select OU1 from the menu.
2. Press and hold Set to modify the parameter value.
3. Set the switching function.
• Hno: hysteresis function/NO
• Hnc: hysteresis function/NC
• Fno: window function/NO
• Fnc: window function/NC
4. Press Mode/Enter.
5. Select OU2 from the menu.
6. Press and hold Set to modify the parameter value.
7. Set the function.
• Hno: hysteresis function/NO
• Hnc: hysteresis function/NC
• Fno: window function/NO
• Fnc: window function/NC
• I: current signal proportional to pressure 4-20 mA
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• InEG: current signal proportional to pressure 20-4 mA
8. Press Mode/Enter.
Set switching limits
Follow these steps to set the limits that cause the outputs to switch.
Procedure
1. Select SP1 or SP2 from the menu.
2. Press and hold Set to modify the parameter value.
3. Set the limit at which the output switches.
4. Press Mode/Enter.
5. Select rP1 or rP2 from the menu.
6. Press and hold Set to modify the parameter value.
7. Set the limit at which the output resets. The rPx value is always lower than SPx. The pressure transmitter
accepts only values lower than the value for SPx.
8. Press Mode/Enter.
Automatically scale the analog output
Follow these steps to set the start and end value of the analog output to the current system pressure reading. If the automatic setting is invalid, the pressure transmitter displays UL or OL. After acknowledging an incorrect value, the pressure senor displays Err and does not accept the incorrect value.
Procedure
1. Set the minimum pressure requested in the system.
a) Select tASP from the menu.
b) Press and hold Set.
The display flashes the current set value.
c) Release Set when the value stops flashing.
The pressure transmitter displays the new value.
d) Press Mode/Enter.
The current system pressure is defined as the start value for the analog signal.
2. Set the maximum pressure requested in the system.
a) Select tAEP from the menu.
b) Press and hold Set.
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The current value flashes on the display.
c) Release Set when the value stops flashing.
The pressure transmitter displays the new value.
d) Press Mode/Enter.
The pressure transmitter sets the current system pressure as the end value for the analog signal.
Manually scale the analog output
Follow these steps to manually set the start value (ASP) and end value (AEP) for the analog output. The values for ASP and AEP must be within defined limits.
Procedure
1. Select ASP from the extended functions menu.
2. Press and hold Set to modify the parameter value.
3. Set the measured value at which the pressure transmitter provides 4 mA (20 mA if OU2 = InEG).
4. Select AEP from the extended functions menu.
5. Press and hold Set to modify the parameter value.
6. Set the measured value at which the pressure transmitter provides 20 mA (4 mA if OU2 = InEG).
Note
The minimum distance between ASP and AEP must be 25 percent of the upper range limit (maximum rangedown is 4:1).

3.3.4 Optional settings

This section provides instructions for modifying optional settings. Modification of these settings is not required for normal operation of the pressure transmitter.
Perform manual zero trim
Follow these steps to manually scale the pressure offset by +/-5 percent. Use this after installation to trim out any measurement offsets because of mounting effects.
Procedure
1. Select COF from the extended functions menu.
2. Press and hold Set to modify the parameter value.
3. Set the value between -5% and 5%.
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The pressure transmitter modifies the measured pressure by this value.
Perform an automatic zero trim
Follow these steps to automatically scale the pressure offset by +/-5 percent. Use this after installation to trim out any measurement offsets because of mounting effects.
Prerequisites
Ensure no pressure is applied to the pressure transmitter.
Procedure
1. Select tCOF from the menu.
2. Press and hold Set. The current offset value appears then the current system pressure appears.
3. Release Set.
4. Press Mode/Enter to confirm the new offset value.
Setting output reaction to fault conditions
Follow these steps to modify how the outputs react to fault conditions.
Procedure
1. Select FOU1 from the extended functions menu.
2. Press and hold Set to modify the parameter value.
3. Set the value for output 1.
• On: output 1 switches on in case of a fault.
• OFF: output 1 switches off in case of a fault.
• OU: output 1 switches irrespective of a fault as defined by
parameters SP1, rP1 und OU1.
4. Select FOU2 from the extended functions menu.
5. Press and hold Set to modify the parameter value.
6. Set the value for output 2.
• On: output 2 switches on in case of a fault, the analog signal goes
to the upper final value.
• OFF: output 2 switches off in case of a fault, the analog signal
goes to the lower final value.
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• OU: output 2 switches irrespective of the fault as defined by
parameters SP2, rP2, OU2. The analog signal corresponds to the measured value.
Postrequisites
For more information on error messages, see Error messages.
Setting a delay for the switching outputs
Follow these steps to modify the time before an output switches after a fault. The maximum delay time is 50 seconds.
Procedure
1. Select the switch-on delay parameter for the output from the extended functions menu.
• Select dS1 to modify the switch-on delay for OUT1.
• Select dS2 to modify the switch-on delay for OUT2.
2. Press and hold Set to modify the parameter value.
3. Set the value between 0.1 and 50 seconds.
4. Select the switch-off delay parameter for the output from the extended functions menu.
• Select dr1 to modify the switch-off delay for OUT1.
• Select dr2 to modify the switch-off delay for OUT2.
5. Press and hold Set to modify the parameter value.
6. Set the value between 0.1 and 50 seconds. Setting the value to 0.0 deactivates the delay.
Setting the output logic for the switching outputs
Follow these steps to change the output logic for the switching outputs.
Procedure
1. Select P-n from the extended functions menu.
2. Press and hold Set to modify the parameter value.
3. Set the parameter to PnP or nPn.
4. Press Mode/Enter.
Setting damping for the switching signal
Damping the switching signal prevents the outputs from erroneously switching because of erratic pressure readings. The damping value is the response time in seconds between pressure change and change to the
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Quick Start Guide August 2020
switching status. The damping value also influences the value displayed on the pressure transmitter and the switching frequency (fmax = 1 ÷ 2dAP).
Procedure
1. Select dAP from the extended functions menu.
2. Press and hold Set to modify the parameter value.
3. Set the value between 0.0 and 30 seconds. A value of 0.0 seconds deactivates damping.
4. Press Mode/Enter.
Setting a damping for the analog signal
Damping the analog signal prevents the 4-20 mA output from erroneously changing because of erratic pressure readings. The analog damping value is the response time in seconds between pressure change and the change of the analog signal.
Procedure
1. Select dAA from the extended functions menu.
2. Press and hold Set to modify the parameter value.
3. Set a value between 0.01 and 99.99 seconds. A value of 0.0 seconds deactivates damping.
4. Press Mode/Enter.
Perform a sensor trim
Follow these steps to perform a sensor trim and calibrate the pressure transmitter measurement.
Procedure
1. Apply a defined reference pressure to the transmitter between ASP and AEP.
2. Select CAL from the menu.
3. Press Set. The pressure transmitter displays CP1.
4. Press and hold Set for five seconds. The pressure transmitter displays the current pressure measurement.
5. Press Set until the pressure transmitter displays the reference pressure.
The pressure output can change by up to two percent of the upper range limit.
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6. Press Mode/Enter. The pressure transmitter displays CP1.
7. Press Mode/Enter again. The pressure transmitter displays CP2.
8. To apply a second point on the curve or measured values, apply a second defined reference pressure to the transmitter.
The minimum distance between the calibration points CP1 and CP2 is five percent of the upper range limit.
9. Press and hold Set for five seconds. The pressure transmitter displays the current pressure measurement.
10. Press Set until the pressure transmitter displays the reference pressure or the corresponding analog signal is provided on OUT2.
The pressure output can change by up to two percent of the upper range limit.
11. Press Mode/Enter. The pressure transmitter displays CP2.
12. Press Mode/Enter again. The pressure transmitter displays CAL.

3.3.5 Service fuctions

This section provides instructions for viewing and managing parameters.
View the highest and lowest measured pressure
The pressure transmitter saves the highest and lowest measured preasure values. Follow these steps to view the highest and lowest pressure values previously measured by the pressure transmitter.
Procedure
1. To view the maximum pressure value, select HI from the extended functions menu.
2. To view the minimum pressure value, select LO from the extended functions menu.
Deleting high and low pressure memory
Follow these steps to clear the highest and lowest pressure readings on the pressure transmitter.
Procedure
1. Select HI or LO from the extended functions menu.
2. Press and hold Set until the pressure transmitter displays ---.
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Quick Start Guide August 2020
3. Press Mode/Enter.
Resetting all parameters to factory default settings
Follow these steps to reset all of the parameters to the factory default settings.
Prerequisites
Before resetting the parameters, record the current parameters using
Factory settings.
Procedure
1. Select rES from the extended functions menu.
2. Press and hold Set until the pressure transmitter displays ---.
3. Press Mode/Enter.

3.3.6 Simulation function

During a simulation, the pressure transmitter replicates error conditions for testing purposes. This section includes instructions for using the simulation function.
Open the simulation menu
Open the simulation menu to view simulation options and parameters.
Procedure
1. Select EF from the menu.
2. Press Set. The extended functions menu opens.
3. Select SIM from the menu.
4. Press Set. The simulation menu opens. The first option is SEL.
Set the simulation output state
Follow these steps to set the output state for a simulation.
Procedure
1. Select SEL from the simulation menu.
2. Press and hold Set to change the simulation menu to OU.
3. For three-wire operation, select S.OU1 from the simulation menu.
For two-wire operation, skip to step Step 6.
4. Press and hold Set to set the value.
• OPEN: output 1 not active/open
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• CLOS: output 1 active/closed
5. Press Mode/Enter.
6. Select S.OU2 from the simulation menu.
7. Press and hold Set to set the value.
• If OU2 = Hnc, Hno, Fnc or Fno (not in two-wire operation): — OPEN: output 2 not active/open.
— CLOS: output 2 active/closed.
• If OU2 = I or InEG: — 3.60-21.10 mA in steps of 0.01 mA.
8. Press Mode/Enter.
Set the simulation pressure value
The pressure transmitter will display the simulation pressure value during the simulation. Follow these steps to set the pressure value for the simulation.
Procedure
1. Select SEL from the simulation menu.
2. Press and hold Set to change the simulation menu to Proc.
3. Press Mode/Enter. The pressure transmitter displays S.Pr.
4. Select S.Pr from the simulation menu.
5. Press and hold Set to modify the pressure value.
6. Press Mode/Enter.
Set simulation duration
Follow these steps to set the duration of the simulation. Simulations can run between 1-60 minutes.
Procedure
1. Select S.TIM from the simulation menu.
2. Press and hold Set to modify the parameter value.
3. Set the duration value between 1-60 minutes.
4. Press Mode/Enter.
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Quick Start Guide August 2020
Start a simulation
Follow these steps to start a simulation.
Prerequisites
Set the simulation parameters.
Procedure
1. Select S.ON from the simulation menu.
2. Press and hold Set until the pressure transmitter displays SIM and the current operating indicator.
Current operation indications include:
• Current system pressure if SEL = OU.
• Simulated measured value set in S.Pr if SEL = Proc.
The simulation runs until the set duration time elapses. Then, the pressure transmitter displays S.OFF then SEL.
Abort a simulation
Follow these steps to stop a simulation before the duration time elapses.
Procedure
Press Mode/Enter or Set. The pressure transmitter displays S.OFF for two seconds then displays SEL.
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4 Setting ranges

This section contains the minimum and maximum settings for the specified parameters by pressure range.
Table 4-1: SP1 and SP2
Unit Minimum Maximum Step increment
Pressure range 1A
inH2O -1.92 40.00 0.04
mbar -4.8 99.5 0.1
kPa -0.48 9.95 0.01
mmWS -49 1016 1
Pressure range 2A
inH2O -4.8 100.0 0.1
mbar -12.0 248.8 0.2
kPa -1.20 24.88 0.02
mmWS -122 2540 2
Pressure range 3A
psi -14.45 14.50 0.05
inH20 -400 401 1
mbar -998 1000 1
kPa -99.8 100.0 0.1
mWS -10.18 10.20 0.01
Pressure range 2B
psi -0.70 14.50 0.01
inH2O -19.2 401.6 0.4
mbar -48 1000 1
kPa -4.8 100.0 0.1
mWS -0.49 10.20 0.01
Pressure range 4A
psi -1.4 20.00 0.02
inH2O -39 637.0 0.5
mbar -96 1586 2
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Table 4-1: SP1 and SP2 (continued)
Unit Minimum Maximum Step increment
kPa -9.6 158.6 0.2
mWS -0.98 16.1 0.02
Pressure range 5A
psi -1.74 36.00 0.03
inH2O -48 997 1
bar -0.120 2.482 0.002
kPa -12.0 248.2 0.2
mWS -1.22 25.31 0.01
Pressure range 6A
psi -14.35 55.00 0.05
bar -0.990 3.79 0.005
kPa -99.0 379.0 0.5
Pressure range 7A
psi -14.4 85.0 0.1
bar -0.99 5.860 0.005
kPa -99.0 586.0 0.5
Pressure range 8A
psi -14.2 145.0 0.1
bar -0.98 10.00 0.01
MPa -0.098 1.000 0.001
Pressure range 9A
psi -14.2 230.0 0.2
bar -0.98 15.86 0.02
MPa -0.098 1.586 0.002
Pressure range 1B
psi -13.8 360.0 0.3
bar -0.96 24.82 0.02
MPa -0.096 2.482 0.002
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Table 4-2: rP1 and rP2
Unit Minimum Maximum Step increment
Pressure range 1A
inH2O -2.00 39.92 0.04
mbar -5.0 99.3 0.1
kPa -0.50 9.93 0.01
mmWS -51 1014 1
Pressure range 2A
inH2O -5.0 99.8 0.1
mbar -12.4 248.4 0.2
kPa -1.24 24.84 0.02
mmWS -126 2536 2
Pressure range 3A
psi -14.50 14.45 0.05
inH2O -401 400 1
mbar -1000 998 1
kPa -100.0 99.8 0.1
mWS -10.20 10.18 0.01
Pressure range 2B
psi -0.73 14.47 0.01
inH2O -20.0 400.8 0.4
mbar -50 998 1
kPa -5.0 99.8 0.1
mWS -0.51 10.18 0.01
Pressure range 4A
psi -1.44 19.96 0.02
inH2O -40 636 0.5
mbar -100 1582 2
kPa -10.0 158.2 0.2
mWS -1.02 16.06 0.02
Pressure range 5A
psi -1.80 35.94 0.03
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Table 4-2: rP1 and rP2 (continued)
Unit Minimum Maximum Step increment
inH2O -50 995 1
bar -0.124 2.478 0.002
kPa -12.4 247.8 0.2
mWS -1.26 25.29 0.01
Pressure range 6A
psi -14.50 54.9 0.05
bar -1.000 3.78 0.005
kPa -100.0 378 0.5
Pressure range 7A
psi -14.5 84.8 0.1
bar -1.0 5.85 0.005
kPa -100.0 585.0 0.5
Pressure range 8A
psi -14.5 144.7 0.1
bar -1.00 9.98 0.01
MPa -0.100 0.998 0.001
9A
psi -14.6 229.6 0.2
bar -1.0 15.82 0.02
MPa -0.1 1.582 0.002
Pressure range 1B
psi -14.4 359.4 0.3
bar -1.00 24.78 0.02
MPa -0.100 2.478 0.002
Table 4-3: ASP
Unit Minimum Maximum Step increment
Pressure range 1A
inH2O -2.00 30.00 0.04
mbar -5.0 74.6 0.1
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Table 4-3: ASP (continued)
Unit Minimum Maximum Step increment
kPa -0.50 7.46 0.01
mmWS -51 762 1
Pressure range 2A
inH2O -5.0 75.0 0.1
mbar -12.4 186.6 0.2
kPa -1.24 18.66 0.02
mmWS -126 1904 2
Pressure range 3A
psi -14.50 7.25 0.05
inH2O -401 201 1
mbar -1000 500 1
kPa -100.0 50.0 0.1
mWS -10.20 5.10 0.01
Pressure range 2B
psi -0.73 10.88 0.01
inH2O -20.0 301.2 0.4
mbar -50 750 1
kPa -5.0 75.0 0.1
mWS -0.51 7.65 0.01
Pressure range 4A
psi -1.46 15.00 0.02
inH2O -40 477.5 0.5
mbar -100 1188 2
kPa -10.0 118.8 0.2
mWS -1.02 12.06 0.02
Pressure range 5A
psi -1.80 27.00 0.03
inH2O -50 747 1
bar -0.124 1.860 0.002
kPa -12.4 186.0 0.2
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Table 4-3: ASP (continued)
Unit Minimum Maximum Step increment
mWS -1.26 18.98 0.01
Pressure range 6A
psi -14.50 41.25 0.05
bar -1.000 2.840 0.005
kPa -100.0 284.0 0.5
Pressure range 7A
psi -14.5 63.7 0.1
bar -1.0 4.395 0.005
kPa -100.0 439.5 0.5
Pressure range 8A
psi -14.5 108.7 0.1
bar -1.00 7.50 0.01
MPa -0.100 0.750 0.001
Pressure range 9A
psi -14.6 172.4 0.2
bar -1.0 11.88 0.02
MPa -0.1 1.19 0.002
Pressure range 1B
psi -14.4 270.0 0.3
bar -1.00 18.58 0.02
MPa -0.100 1.862 0.002
Table 4-4: AEP
Unit Minimum Maximum Step increment
Pressure range 1A
inH2O 8.00 40 0.04
mbar 19.9 95.5 0.1
kPa 1.99 9.95 0.01
mmWS 203 1016 1
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Table 4-4: AEP (continued)
Unit Minimum Maximum Step increment
Pressure range 2A
inH2O 20.0 100 0.1
mbar 49.8 248.8 0.2
kPa 4.98 24.88 0.02
mmWS 510 2540 2
Pressure range 3A
psi -7.25 14.50 0.05
inH2O -201 401 1
mbar -500 1000 1
kPa -50.0 100.0 0.1
mWS -5.10 10.20 0.01
Pressure range 2B
psi 2.90 14.50 0.01
inH2O 80.4 401.6 0.4
mbar 200 1000 1
kPa 20.0 100.0 0.1
mWS 2.04 10.20 0.01
Pressure range 4A
psi 3.54 20 0.02
inH2O 199.5 637 0.5
mbar 298 1586 2
kPa 29.8 158.6 0.2
mWS 3.02 16.1 0.02
Pressure range 5A
psi 7.20 36 0.03
inH2O 200 997 1
bar 0.498 2.482 0.002
kPa 49.8 248.2 0.2
mWS 5.07 25.31 0.01
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Quick Start Guide August 2020
Table 4-4: AEP (continued)
Unit Minimum Maximum Step increment
Pressure range 6A
psi -0.75 55 0.05
bar -.050 3.79 0.005
kPa -5.0 379 0.5
Pressure range 7A
psi 6.8 85 0.1
bar 0.465 5.86 0.005
kPa 46.5 586 0.5
Pressure range 8A
psi 21.8 145.0 0.1
bar 1.50 10.00 0.01
MPa 0.150 1.000 0.001
Pressure range 9A
psi 43.0 230 0.2
bar 2.98 15.86 0.02
MPa 0.298 1.586 0.002
Pressure range 1B
psi 75.6 360.0 0.3
bar 5.20 24.82 0.02
MPa 0.522 2.482 0.002
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August 2020 Quick Start Guide

5 Troubleshooting

The pressure transmitter monitors itself for issues then reports the issues using the display. If the pressure transmitter detects a fault, it will react according to FOU1 and FOU2. Use the information in this section to identify and resolve common issues with the pressure transmitter.

5.1 Error messages

Use the information in the table below to resolve errors with the pressure transmitter.
Display Description Corrective actions
Off The supply voltage is too low
(fault number W403).
• Check and/or correct the
supply voltage.
• In a two-wire operation,
check and/or correct the connected load.
PARA The parameter setting is outside
E100 The pressure transmitter
the permitted range.
detected an internal error.

5.2 Warning messages

Use the information in the table below to resolve issues indicated by warning messages with the pressure transmitter.
Display
SC1 OUT1
SC2 OUT2
SC OUT1 and
OL The measured value is
LED Status Description Corrective actions
Flashes
Flashes
OUT2 are flashing
Excessive current switching output 1.
Excessive current switching output 2.
Excessive current switching output 1 and switching output 2.
more than five percent above the upper range limit (URL).
Reset the parameter.
Replace the pressure transmitter.
Check switching output 1 for a short circuit or excessive current then remove the fault.
Check switching output 2 for a short circuit or excessive current then remove the fault.
Check switching output 1 and 2 for a short circuit or excessive current then remove the fault.
Check the system pressure and correct it if necessary.
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Quick Start Guide August 2020
Display LED Status Description Corrective actions
UL The measured value is
more than five percent
Check the system pressure
and correct it if necessary. below the lower range limit (LRL).
W531 The analog output is at the
upper limit (20.5 mA).
Increase the AEP value if
possible (for OU2 = InEG,
increase ASP value) or
reduce the system
pressure.
Loc The pressure transmitter
does not allow parameter settings to change
Unlock the buttons.
(Locking and unlocking
the pressure transmitter)
because the buttons are locked.
W530 The analog output is at the
lower limit (3.8 mA).
Reduce the ASP value (for
OU2 = InEG increase AEP
value) or increase the
system pressure.
W532 The load at the analog
output is too high
(1)
Reduce the load at output
2 or increase the supply
voltage.
W203 The pressure transmitter
encountered an error
Replace the pressure
transmitter. during the temperature compensation of the pressure measurement which can result in reduced accuracy.
W703 The medium temperature
is above 302 °F (150 °C)
W704 The medium temperature
is below -22°F (-30°C).
W161 The pressure transmitter
temperature is above 194°F (90°C).
W162 The pressure transmitter
temperature is below
Reduce the medium
temperature.
Increase the medium
temperature.
Remove any insulation
around the pressure
transmitter.
Insulate the pressure
transmitter.
-22°F (-30°C).
(1) The pressure transmitter displays this message only for a three-wire operation.
For two-wire operation, it detects and displays under voltage. If the pressure transmitter does not use OU2 for the application, avoid the message by defining a switching function for OU2
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August 2020 Quick Start Guide

6 Product certifications

6.1 European directive information

The most recent revision of the EC Declaration of Conformity can be found at Emerson.com/Rosemount.

6.2 Ordinary location information

As standard, this product has been examined and tested to determine that the design meets the basic electrical, mechanical, and fire protection requirements by a nationally recognized test laboratory (NRTL) as accredited by the Federal Occupational Safety and Health Administration (OSHA).

6.3 3-A® certification

This product is authorized to display the 3-A symbol. Ensure gaskets and process connection accessories selected for installation meet both the application and 3-A requirements. A certificate of compliance is available at
Emerson.com/Rosemount.

6.4 Other industry certifications

All Rosemount 326P transmitter surfaces and materials which come into contact with process medium comply with the following regulations:
• (EC) No. 1935/2004
• (EC) No. 2023/2006
• CFR Title 21 (FDA) § 186.1256
• CFR Title 21 (FDA) § 177.2600
• CFR Title 21 (FDA) § 177.1550
• CFR Title 21 (FDA) § 177. 2415
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Quick Start Guide August 2020

7 Factory settings

Use this worksheet to record parameter values.
Setting Factory default setting User-defined setting
SP1 ~25% URL
rP1 ~23% URL
OU1 Hno
OU2 I
SP2 ~75% URL
rP2 ~73% URL
COF / tCOF 0.0
ASP / tASP 0% URL
Pressure range 3A: -14.5 psi (-1 bar)
AEP / tAEP 100% URL
Uni psi/inH2O
SELd P
dS1 0.0
dr1 0.0
dS2 0.0
dr2 0.0
FOU1 OU
FOU2 OU
P-n pnp
dAP 0.06
dAA 0.03
dis d2
CP1 0.00
CP2 0.00
(1)(2)
(1)(2)
(1)(2)
(1)(2)
(1)
(1)
(1) The set percentage of the upper range limit (URL)(the percentage of the
measuring span).
(2) For specific default factory settings, see Table 7-1.
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August 2020 Quick Start Guide
Table 7-1: Specific factory settings for SP1, rP1, SP2, and rP2
Pressure range
1A 10.04 9.24 30.12 29.32
2A 25.1 23.1 75.3 73.3
3A -7.25 -7.85 7.25 6.65
2B 3.63 3.34 10.88 10.59
4A 5.8 5.34 17.40 16.94
5A 9.06 5.34 17.40 16.94
6A 14.50 13.35 43.50 42.35
7A 21.8 20.0 65.3 63.5
8A 36.3 33.4 108.8 105.9
9A 58.0 53.4 174.0 169.4
1B 90.6 83.4 271.8 264.6
SP1 rP1 SP2 rP2
inH2O
psi
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*00825-0100-4327*
00825-0100-4327, Rev. 02
Quick Start Guide
August 2020
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