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Rosemount™ 326L Level Transmitter
Guided Wave Radar
Product Data Sheet
00813-0100-4326, Rev AA
March 2019
The Rosemount 326L Level Transmitter is designed to provide accurate and repeatable continuous
level measurements in the food and beverage industry.
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March 2019
Emerson is here to optimize your food and beverage operations
The Rosemount 326L Level Transmitter ensures your process level is always in specification
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Measuring Range: up to 78.7 in. (2000 m)
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Process Temperature: Up to 302°F (150°C)
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Wetted Materials: 316L SST Polished to Ra < 32 µ-in. (0.8 µm), EPDM, PEEK
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Ingress Protection: IP69K
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Communication protocol: 4-20 mA, IO-Link, 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
Accessories........................................................................................................................................................................................3
Specifications.................................................................................................................................................................................... 5
Product certifications........................................................................................................................................................................ 9
Dimensional drawings..................................................................................................................................................................... 10
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Ordering information
Table 1: 326L Level Transmitter ordering information
The Standard offering represents the most common options. The starred options (★) should be selected for best delivery. The
Expanded offering is subject to additional delivery lead time.
Model
326L Level transmitter ★
Process connection type
G10 G1" Thread ★
Housing material
A Stainless Steel ★
Optional options (include with the selected model number)
Material traceability certificate
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.
Accessories
These accessories are available for the Rosemount 326L Transmitter.
Hygienic process connection adpaters
Type
1-1.5 in. Tri-clamp 316L SST, EPDM o-ring, 232 psi (16 bar) max pressure, 16 µ-in
2.0 in. Tri-clamp 316L SST, EPDM o-ring, 232 psi (16 bar) max pressure, 16 µ-in
Varivent Type F 316L SST, EPDM o-ring, 362 psi (25 bar) max pressure, 16 µ-in
Varivent Type N 316L SST, EPDM o-ring, 362 psi (25 bar) max pressure, 16 µ-in
Description Part Number
FB-1001
(0.4 µ-m) surface finish, 3-A, FDA
FB-1002
(0.4 µ-m) surface finish, 3-A, FDA
FB-1010
(0.4 µ-m) surface finish, 3-A, FDA
FB-1011
(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
FB-1020
FB-1021
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Type Description Part Number
March 2019
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-1022
FB-1041
Probes
These probes are available for the Rosemount 326L Transmitter. All probes are polished to Ra < 32 µ-in. (0.8 µ-m).
Description Part number
5.9 in. (150 mm) FB-2015
11.8 in. (300 mm) FB-2030
19.7 in. (500 mm) FB-2050
27.6 in. (700 mm) FB-2070
39.4 in. (1000 mm) FB-2100
59.1 in. (1500 mm) FB-2150
78.7 in. (2000 mm) FB-2200
Note
For a material traceability certificate, add option code Q8 after your part number (Ex: FB-2015Q8). Additional delivery lead times
may apply.
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
Rosemount 326L Probe O-ring; EPDM; Qty 5 FB-3020
Rosemount 326L Probe O-ring; FKM; Qty 5 FB-3021
Part number
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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
Specifications
Performance specifications
Reference accuracy
± 0.27 in. (7 mm)
Maximum offset error
0.20 in. (5 mm)
Ambient temperature effect
± 0.2% measured distance per 18°F (10°C)
Electromagnetic compatibility
The Rosemount 326L meets the requirements of:
DIN EN 61000-6-2
DIN EN 61000-6-3 (in a metal tank)
DIN EN 61000-6-4 (in a plastic tank)
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Vibration
The Rosemount 326L is tested to DIN EN 60068-2-6 with a reference rod of 19.7 in. (500 mm).
Peak acceleration of 20 g in the frequency range 10 to 2000 Hz.
Peak acceleration of 1 g in the frequency range 5 to 200 Hz.
Functional specifications
Service
Water and water-based media
Dialectric constant of media
> 5
Measuring range
March 2019
Probe length
5.9 to 78.7 in. (150 to 2000 mm)
Active Range
L - 1.57 in. (L- 40 mm)
Blind zone
I1: 1.18 in. (30 mm)
I2: 0.39 in. (10 mm)
Sampling rate
4 Hz
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Temperature limits
Process
-40 to 302 °F (-40 to 150 °C); -40 to 250 °F (-40 to 121 °C) for 3-A applications
Ambient
-40 to 176 °F (-40 to 80 °C)
Storage
-40 to 212 °F (-40 to 100 °C)
Pressure limits
-14.5 to 580 psi (-1 to 40 bar)
Power supply
18 – 30 V DC
Current draw
<50 mA
Protection class
III
Outputs
The Rosemount 326L can provide up to two outputs.
OUT1: Switching output (PNP/NPN) or IO-Link (digital)
OUT2: Switching output (PNP/NPN) or 4-20 mA (analog)
For more information on how to access these outputs see Electrical connection.
Switch output
Max voltage drop: 2.5V
Permanent DC current rating: 150 mA; 200 mA if temperature is limited to 140°F (60°C)
IO-Link
Table 2:
IO-Link Device Parameters
Transfer type COM2 (38.4 kBaud)
IO-Link revision 1.1
SDCI standard IEC 61131-9
SIO mode Yes
Required master port class A
Process data analog 1
Process data binary 2
Minimum process cycle time 2.3 ms
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Indication / Local Operator Interface
The Rosemount 326L comes standard with a four-digit alphanumeric display as well as a Local Operator Interface (LOI). The threebutton LOI provides the capability for local commissioning without extra tools/software. The display also includes LED indicators to
identify transmitter display units and switch status. Display units available are inch, mm, and percentage (%).
Turn on time
Three seconds
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.
Process connections
External threaded G1 connection.
Process-wetted parts
Surface finish: Ra < 32 µ-in. (0.8 µ-m)
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316L SST (1.4435)
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PEEK
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EPDM
Non-wetted parts
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316L SST
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FKM
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PBT
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PEI
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PFA
Electrical connection
The Rosemount 326L is equipped with an M12 Female electrical connector which features gold-plated contacts.
The wiring configuration sets the transmitter output. The wiring diagram is shown in the following figure. For more information on
wiring the transmitter, see the Rosemount 326L Quick Start Guide (00825-0100-4326).
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March 2019
Figure 1: Rosemount 326L Wiring Diagram
OUT1: Switching output (PNP/NPN) or IO-Link (digital)
OUT2: Switching output (PNP/NPN) or 4-20 mA (analog)
Shipping weight
0.89 lbs. (401.5 g)
Product certifications
European Directive Information
A copy of the EU Declaration of Conformity can be found at the end of the Quick Start Guide. The most recent revision of the EU
Declaration of Conformity can be found at Emerson.com/Rosemount.
Ordinary Location Certification
As standard, the transmitter 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).
3A® 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.
Note
The 326L Level Transmitter should utilize clean-out-of-place (COP) procedures for 3-A applications.
Other industry certifications
All Rosemount 326L transmitter surfaces and materials which come into contact with process medium comply with the following
regulations:
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(EC) No. 1935/2004
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(EC) No. 2023/2006
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CFR Title 21 (FDA) § 177.2600
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CFR Title 21 (FDA) § 177. 2415
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Dimensional drawings
Figure 2: Rosemount 326L Level Transmitter dimensional drawing
March 2019
A. Status LEDs
B. Four-digit alphanumeric display
C. Programming buttons
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00813-0100-4326
Rev. AA
March 2019
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