Rosemount 326P Specifications

Product Data Sheet

00813-0100-4327, Rev AA

Rosemount™ 326P Pressure Transmitter

March 2019

The Rosemount 326P Pressure Transmitter is designed to provide accurate and repeatable pressure
and hydrostatic level measurements in the food and beverage industry.

March 2019

Emerson is here to optimize your food and beverage operations

The Rosemount 326P Pressure Transmitter ensures your process pressures are
always in specification

■

Measuring Range: up to 360 psi (24.86 bar)

■

Process Temperature: Up to 257°F (125°C); 293°F (145°C)
for a maximum of 1 hour

■

Wetted Materials: Ceramic, PTFE, 316L SST Polished to Ra
<16 µ-in. (0.4 µ-m)

■

Ingress Protection: IP69K

■

Communication protocol: 4-20 mA, Switch

Emerson offers a broad portfolio of products to solve your toughest challenges

From simple measurements to critical applications, Emerson’s extensive portfolio of solutions has you covered. Our reliable, easy­to-use, and innovative products will help you to maximize production, maintain quality control and product consistency, minimize
product losses, and assure the safety of your products.

Emerson offers a full service organization to give you the support you need

From simple repairs to complex projects, Emerson supports you with training and instrument services that improve the
maintenance, reliability and performance of your products and, ultimately, your process equipment and production quality. We
have a full organization of experienced and certified personnel. With both factory and regional service centers, we offer unmatched
local support.

Contents

Emerson is here to optimize your food and beverage operations....................................................................................................... 2

Ordering information........................................................................................................................................................................ 3

Transmitter specifications................................................................................................................................................................. 5

Product certifications...................................................................................................................................................................... 11

Dimensional drawings..................................................................................................................................................................... 13

2 Emerson.com/Rosemount

March 2019

Ordering information

Table 1: 326P Pressure Transmitter ordering information

The starred offerings (★) represent the most common options and should be selected for best delivery. The non-starred offerings
are subject to additional delivery lead time.

Model

326P Pressure Transmitter ★

Pressure range

1A -2.0 to 40 inH2O (-5.0 to 99.5 mbar) ★

2A -5.0 to 100 inH2O (-12.4 to 248.8 mbar) ★

3A -14.5 to 14.5 psi (-1 to 1 bar) ★

2B -0.73 to 14.5 psi (-50 to 1000 mbar) ★

4A -1.46 to 20 psi (-0.1 to 1.38 bar) ★

5A -1.8 to 36 psi (-0.124 to 2.48 bar) ★

6A -14.5 to 55.0 psi (-1 to 3.79 bar) ★

7A -14.5 to 85 psi (-1 to 5.86 bar) ★

8A -14.5 to 145.0 psi (-1 to 10.0 bar) ★

9A -14.5 to 230.0 psi (-1 to 15.9 bar) ★

1B -14.5 to 360 psi (-1 to 24.8 bar) ★

Process connections

G10 G1" thread ★

Housing material

A Stainless steel ★

Optional options (include with the selected model number)

Calibration certification

Q4 Calibration certificate

Material traceability certification

Q8 Material Traceability per EN 10204 3.1B

Note

Optional options will not be included in the model string printed on the transmitter. For product reorder, make sure to include any
desired optional options in the model string.

Emerson.com/Rosemount 3

Accessories and spare parts

These accessories are available for the Rosemount 326P Pressure Transmitter.

Hygienic process connection adpaters

These hygienic adapters assemble to the G1" process connection of the Rosemount 326P Pressure Transmitter.

Table 2:

Type Description Part Number

March 2019

1-1.5 in. Tri-clamp 316L SST, EPDM o-ring, 232 psi (16 bar) max pressure, 16 µ-in

(0.4 µ-m) surface finish, 3-A, FDA

2.0 in. Tri-clamp 316L SST, EPDM o-ring, 232 psi (16 bar) max pressure, 16 µ-in
(0.4 µ-m) surface finish, 3-A, FDA

Varivent Type F 316L SST, EPDM o-ring, 362 psi (25 bar) max pressure, 16 µ-in

(0.4 µ-m) surface finish, 3-A, FDA

Varivent Type N 316L SST, EPDM o-ring, 362 psi (25 bar) max pressure, 16 µ-in

(0.4 µ-m) surface finish, 3-A, FDA

DIN 11851 DN32 316L SST, EPDM o-ring, 580 psi (40 bar) max pressure, 16 µ-in

(0.4 µ-m) surface finish, FDA

DIN 11851 DN40 316L SST, EPDM o-ring, 580 psi (40 bar) max pressure, 16 µ-in

(0.4 µ-m) surface finish, FDA

DIN 11851 DN50 316L SST, EPDM o-ring, 580 psi (40 bar) max pressure, 16 µ-in

(0.4 µ-m) surface finish, FDA

D50 Weld-in Adapter 316L SST, EPDM o-ring, 725 psi (50 bar) max pressure, 16 µ-in

(0.4 µ-m) surface finish, 3-A, FDA

Universal Adapter RD52 316L SST; EPDM o-ring; 232 psi (16 bar) max pressure; FDA FB-1045

G1 Welding Mandrel Absorbs heat and prevents warping during welding of FB-1041 FB-6041

Note

For a material traceability certificate, add option code Q8 after your part number (Ex: FB-1001Q8). Additional delivery lead times
may apply. The certification option (Q8) will not be included in the part number printed on the transmitter. For product reorder,
make sure to include any desired certification in the part number.

FB-1001

FB-1002

FB-1010

FB-1011

FB-1020

FB-1021

FB-1022

FB-1041

O-rings

Description

Hygienic Adapter O-ring; FKM, Qty 1 FB-3001

Hygienic Adapter O-ring; FKM; Qty 5 FB-3002

Hygienic Adapter O-ring; EPDM; Qty 5 FB-3003

Hygienic Adapter Upper Gasket; PEEK; Qty 1 FB-3010

4 Emerson.com/Rosemount

Part number

March 2019

Cables and connectors

Description Length Part number

Hygienic Wireable Terminal Connector - M12 Female (angled) to Screw Terminals

Operating voltage: < 250 AC / < 300 DC, Max current: 4A,
Ambient temp: -13°F - 212°F (-25°C - 100°C), Screw Terminals: 23AWG - 17AWG
316L SST, gold plated contacts, EPDM sealing, IP69K

Hygienic Cable - M12 Female (angled) to Flying Lead (4 x 22AWG)

Operating voltage: <250 AC / <300 DC, Max current: 4A,
Ambient temp: -13°F - 212°F (-25°C - 100°C), cULus approval limited to 149°F (65°C)
316L SST, gold plated contacts, EPDM sealing, IP69K

Hygienic Patch Cable - M12 Female (angled) to M12 Male

Operating voltage: < 250 AC / < 300 DC, Max current: 4A,
Ambient temp: -13°F - 212°F (-25°C - 100°C), cULus approval limited to 149°F (65°C)
316L SST, gold plated contacts, EPDM sealing, IP69K

Wirable socket FB-4000

6.6 ft. (2 m) FB-4002

16.4 ft. (5 m) FB-4005

32.8 ft. (10 m) FB-4010

65.6 ft. (20 m) FB-4020

164 ft. (50 m) FB-4050

1.97 ft. (0.6 m) FB-4106

3.3 ft. (1 m) FB-4101

6.6 ft. (2 m) FB-4102

16.4 ft. (5 m) FB-4105

32.8 ft. (10 m) FB-4110

Transmitter specifications

Performance specifications

Reference accuracy

Stated reference accuracy is for 1:1 rangedown and includes hysteresis and repeatability.

Range

2A, 3A, 2B, 4A, 5A, 6A, 7A, 8A, 9A, 1B ± 0.2 % of span

1A ± 0.5 % of span

Long-term stability

±0.1% of span for 1 year

Switch point accuracy

Range

2A, 3A, 2B, 4A, 5A, 6A, 7A, 8A, 9A, 1B ± 0.2 % of span

1A ± 0.5 % of span

Reference accuracy

Switch point accuracy

Emerson.com/Rosemount 5

Dynamic performance

Two-wire

Analog output 45 ms

Three-wire

Analog output 7 ms

Switching output 3 ms (minimum)

Ambient temperature effect

Per 18°F (10°C) in the temperature range 32°F to 158°F (0°C to 70°C)

Range Ambient temperature effect

2A, 3A, 2B, 4A, 5A, 6A, 7A, 8A, 9A, 1B ± 0.15 % of span

1A ± 0.2 % of span

Electromagnetic compatibility

The 326P meets the requirements of EN 61000-4.

March 2019

Susceptibility Parameter

ESD 4 kV CD / 8 kV AD

Radiated 10 V/m

Burst 2 kV

Surge 0.5/1 kV

Conducted 10 V

Vibration

The Rosemount 326P is tested to DIN IEC 68-2-6 and has a peak acceleration of 20 g in the frequency range 10 to 2000 Hz.

Functional specifications

Range and sensor limits

Range

1A 10 inH2O (24.9 bar) 40 inH2O (99.5 bar) -2 inH2O (-5 mbar)

2A 25 inH2O (62.2 bar) 100 inH2O (248.8 mbar) -5 inH2O (-12.4 mbar)

Minimum span Upper range limit Lower range limit

(1)

3A 3.63 psi (0.25 bar) 14.5 psi (1 bar) -14.5 psi (-1 bar)

2B 3.63 psi (0.25 bar) 14.5 psi (1 bar) -0.73 psi (-50 mbar)

4A 5.0 psi (0.34 bar) 20 psi (1.38 bar) -1.46 psi (-0.1 bar)

5A 9.0 psi (0.62 bar) 36 psi (2.48 bar) -1.8 psi (-0.124 bar)

6A 13.8 psi (0.95 bar) 55 psi (3.79 bar) -14.5 psi (-1 bar)

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March 2019

Range Minimum span Upper range limit Lower range limit

7A 21.3 psi (1.47 bar) 85 psi (5.86 bar) -14.5 psi (-1 bar)

8A 36.3 psi (2.5 bar) 145 psi (10 bar) -14.5 psi (-1 bar)

9A 57.5 psi (3.96 bar) 230 psi (15.9 bar) -14.5 psi (-1 bar)

1B 90 psi (6.21 bar) 360 psi (24.8 bar) -14.5 psi (-1 bar)

All pressure ranges can mechanically withstand a vacuum of -14.5 psi (-1 bar).

(1)

Transmitter overpressure limits

Range inH2O mbar

1A 1606 4000

2A 2400 6000

Range psi bar

3A 145 10

2B 145 10

4A 215 15

5A 290 20

(1)

6A 435 30

7A 435 30

8A 725 50

9A 1085 75

1B 1450 100

Transmitter burst pressure

Range

1A, 2A 12044 30000

Range psi bar

3A, 2B 435 30

4A 580 40

5A 725 50

6A, 7A 1450 100

8A 2175 150

9A 3625 250

1B 5070 350

inH2O mbar

Emerson.com/Rosemount 7

Service

Liquid, gas, and vapor applications.

Two-wire configuration

Output

In a two-wire configuration, the Rosemount 326P Pressure Transmitter provides a 4-20 mA analog output.

Electrical specifications

Description Value

Power supply 20 - 32 V DC

Current draw 3.6 - 21 mA

Load limitation (Ω) 300

Protection class III

Three-wire configuration

Output

March 2019

In a three-wire configuration, the Rosemount 326P Pressure Transmitter can provide two outputs:

■

OUT1: Switching output

■

OUT2: 4-20 mA analog output or switching output

Switching outputs are PNP/NPN configurable.

Electrical specifications

Description

Power supply 18 - 32 V DC

Current draw < 45 mA

Load limitation (Ω) (Power Supply Voltage - 10) / 20

Protection class III

Voltage drop 2 V

Maximum output current (per output) 250 mA

Switching frequency 125 Hz

Minimum switching cycles 100 million

Value

Temperature limits

Lower temperature limit

Ambient temperature -13 °F (-25 °C) 176 °F (80 °C)

Storage temperature -40 °F (-40 °C) 212 °F (100 °C)

Process temperature
limits

-13 °F (-25 °C) 257 °F (125 °C); 293 °F (145 °C) for up to one hour.

Upper temperature limit

8 Emerson.com/Rosemount

March 2019

Turn-on time

Two-wire configuration: 1.0 second

Three-wire configuration: 0.5 seconds

Damping

Output responses to a step input change are user-selectable. This software damping is in addition to sensor response time.

Analog output

0.01-99.99 seconds

Switching output

0-30 seconds

Indication / Local Operator Interface

The Rosemount 326P is comes standard with a four-digit alphanumeric display as well as a Local Operator Interface (LOI). The two­button LOI provides the capability for local commissioning without extra tools/software. The display also includes LED indicators to
identify transmitter engineering units and switch status. Engineering units available on the display vary by pressure range and are
outlined in the following table.

Pressure Range psi inH20 bar mbar kPA Mpa mWS mmWS % Span

1A X X X X X

2A X X X X X

3A X X X X X X

4A X X X X X X

5A X X X X X X

6A X X X X

7A X X X X

8A X X X

9A X X X

1B X X X

2B X X X X X

Physical specifications

Material selection

Emerson provides a variety of Rosemount™ products with various product options and configurations including materials of
construction that can be expected to perform well in a wide range of applications. The Rosemount product information presented
is intended as a guide for the purchaser to make an appropriate selection for the application. It is the purchaser’s sole responsibility
to make a careful analysis of all process parameters (such as all chemical components, temperature, pressure, flow rate, abrasives,
contaminants, etc.), when specifying product, materials, options and components for the particular application. Emerson is not in a
position to evaluate or guarantee the compatibility of the process fluid or other process parameters with the product, options,
configuration or materials of construction selected.

Emerson.com/Rosemount 9

Process connections

External threaded G1 connection.

Process-wetted parts

■

Ceramics: 99.9% Al2O3

■

PTFE

■

316L SST (1.4435)

■

Surface finish: Ra < 16 µ-in (0.4 µ-m)

Non-wetted parts

■

316L SST

■

FKM

■

PTFE

■

PBT

■

PEI

■

PFA

March 2019

Environmental seal for housing

Enclosures meet IP67, IP68, and IP69K ratings when properly installed

Shipping weights

Range

1A 0.79 357.5

2A 0.78 356.5

3A 0.78 356

2B 0.78 356.3

4A 0.79 361

5A 0.78 356.5

6A 0.79 357

7A 0.79 358.5

8A 0.78 356.2

9A 0.79 359.5

1B 0.81 367

Pounds Grams

Electrical connection

The Rosemount 326P is equipped with an M12 Female electrical connector which features gold-plated contacts. The wiring
configuration sets the operating mode. After wiring the pressure transmitter, it automatically recognizes the connections and
changes to the respective operating mode. Wiring configurations are shown in the following figures.

10 Emerson.com/Rosemount

March 2019

Figure 1: Connection for two-wire operation

BN Brown

WH White

OUT Analog output (4-20 mA)

Colors to DIN EN 60947-5-2

Figure 2: Connection for three-wire operation

BK

BN Brown

BU Blue

WH White

OUT1 Switching output

OUT2 Switching output or analog output (4-20 mA)

Colors to DIN EN 60947-5-2

Black

Product certifications

European directive information

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

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).

For the scope of validity cULus:

The device shall be supplied from an isolating transformer having a secondary Listed fuse rated either:

■

Max 5 amps for voltages 0~20 Vrms (0~28.3 Vp)

■

100/Vp for voltages of 20~30 Vrms (28.3~42.4 Vp)

Emerson.com/Rosemount 11

March 2019

The device shall be connected only by using any Listed (CYJV/7) or R/C (CYJV2/8) cord in respect of Condition of Acceptability,
having suitable ratings.

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.

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

12 Emerson.com/Rosemount

March 2019

Dimensional drawings

Figure 3: Rosemount 326P Pressure Transmitter dimensional drawing

A. Status LEDs
B. Four-digit alphanumeric display
C. Programming button

Factory settings

Engineering unit

4mA 0% upper range limit

20 mA 100% upper range limit

Emerson.com/Rosemount 13

Pressure ranges 1A and 2A: inH20
All other ranges: psi

Pressure range 3A: -14.5 psi (-1 bar)

March 2019

14 Emerson.com/Rosemount

March 2019

Emerson.com/Rosemount 15

00813-0100-4327

Rev. AA

March 2019

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