Electrode Holder
BF-@(R)/BS-1(T)
CSM_BF-@(R)/BS-1(T)_DS_E_8_4
Complete Lineup for Use in High-temperature,
High-pressure Environments or Where
Exposed to Chemicals
• The BF-1 is ideal for liquids with low specific resistance, such as
wastewater.
• The BF-@(R) is used when a strong mounting is required.
• The BS-1 is used when high-temperature, high-pressure resistant
is required.
• The BS-1T is used when corrosion resistance is required.
Refer to Safety Precautions for Electrodes and
Electrode Holders.
Ordering Information
■ Electrode Holders
■ Accessories (Order Separately)
Application
Model
• Liquid with low specific resistance
For 1-pole electrode
• When sturdy mounting is required
For 3-pole electrode
For 3-pole electrode (2-wire)
For 5-pole electrode
For 5-pole electrode (2-wire)
BF-1
BF-3
BF-3R
BF-5
BF-5R
• Applications where resistance to hightemperature, high-pressure is required
For 1-pole electrodes, 250°C, 1.96 MPa
• High-pressure application where resistance to
corrosion is required
For 1-pole electrode, SUS304 981 kPa
For 1-pole electrode, SUS316 981 kPa
For 1-pole electrode, Titanium 981 kPa
For 1-pole electrode, HAS B 981 kPa
For 1-pole electrode, HAS C 981 kPa
Application
Model
Protective Cover (For PS-@S and BF-3/-5)
Protective Cover (For BS-1, BS-1S and BS-1T)
M18 Nut (For BS-1)
M18 Nut (For BS-1T)
BS-1
BS-1S
BS-1S-1
BS-1S2
F03-11
F03-19
F03-17
F03-18
Note: Refer to Installing an Electrode Holder on a Tank under Level
Controller Installation in the Technical Guide for Level
Controllers for information on Level Controller installation.
Refer to PS-@S(R) Electrode Holder Accessories (Order
Separately) for dimensions.
BS-1T SUS304
BS-1T SUS316
BS-1T TITANIUM
BS-1T HAS B
BS-1T HAS C
Specifications
Model
BF-1
BF-3 (R)
(See note 1.)
Item
No. of Electrodes
1
Insulator material
PPS resin (Metallic section is SUS.)
3
Insulation resistance
100 MΩ
BF-5 (R)
(See note 1.)
5
BS-1
---
BS-1T
---
Fluorocarbon polymer (PFA)
Operating temperature Electrode section: −10 to 150°C (with no icing)
Terminal section: −10 to 70°C (with no icing or condensation)
250°C max.
Operating pressure
Atmospheric pressure
1.96 MPa (See note 2.) 981 kPa (See note 2.)
Applications
Liquids with low specific
resistance, such as
wastewater and cloudy
water
General applications for purified water
and wastewater
Boiler water level
detection or hightemperature tanks
180°C max.
Acid or alkaline
solution level
detection
Note: 1. Two-wire Electrode Holders (R models) have a built-in resistance of 6.8 kΩ. They should be used with the Two-wire 61F Controllers.
2. Vapor leakage may occur when used outside of the specified operating temperature and pressure range. Use the Electrode Holder within
the specified maximum operating temperature and pressure range according to the following pressure-temperature curve.
1
BF-@(R)/BS-1(T)
Operating temperature and pressure range
Temperature
(qC)
Sa
tur
at
ed
200
150
p
va
or
e
tur
era
p
m
te
Example
For a pressure of 1.6 MPa,
the temperature inside the water
tank must be at least 200qC.
100
0
0.4
0.8
1.2
1.6
2.0
2.4
Pressure (MPa)
■ Appearance
BF-1
BF-3(R)
BF-5(R)
Tightening torque:
2.25 N·m
Heat resistance: 70°C
BS-1
BS-1T
Maximum terminal
tightening torque:
137.2 N·cm
Tightening torque:
2.25 N·m
Heat resistance: 70°C
Heat resistance: 150°C
Heat resistance: 150°C
(See note 1.)
Material at
clamping section:
iron (standard)
SUS304 and
SUS316 are also
available.
(See note 2.)
Heat resistance: 150°C
SUS
HAS
Titanium
Heat resistance: 250°C
(See note 3.)
Note: 1. The F03-11 Protective Cover (sold separately) is available.
2.
Model
Material at tightening
section
Screws
BS-1
Iron
M18 P = 1.5
BS-1S
SUS304
M18 P = 1.5
BS-1S-1
SUS304
PT1/2
BS-1S2
SUS316
M18 P = 1.5
3. Clamp screws are not provided for HAS B, HAS C, or titanium Electrode Holders. When placing an order, specify the type of material
from the following five: SUS304, SUS316, HAS B, HAS C, or Titanium.
■ Accessories Required for Connecting Electrodes to the BF-@(R)
(Order Separately)
Electrode Shorter
than 1 m
Electrode Longer
than 1 m
The following items are required for
each pole.
• 1 × F03-01 Electrode
• 1 × F03-03 Lock Nut
The Electrode can be cut anywhere
to a desired control level.
BF-@(R)
Spring washer
(See note 1.)
Lock nut
Electrode
M4 screw
tightening torque:
2.19 N·m
The following items are required for
every additional meter of electrode
for each pole.
Separator (for 1-pole)
• 1 × F03-01 Electrode
• 1 × F03-02 Connecting Nut
• 2 × F03-03 Lock Nuts
Connecting nut
Use F03-14 1P Separators to
prevent the electrodes from
touching each another.
Spring washer
Lock nut
Electrode
Note: 1. The spring washer comes with the lock nut.
Contact your OMRON representative to purchase a replacement if the spring washer wears out or is lost.
2. Refer to F03-@ for details on Electrodes, Connecting Nuts, Lock Nuts, and Separators.
2
BF-@(R)/BS-1(T)
Dimensions
Note: All units are in millimeters unless otherwise indicated.
BF-1
(72)
23
8
Two, M5 × 25
mounting screws
22
Mounting Holes
26-dia.
hole
(20 dia.)
60 (48) 33 dia.
Terminal bolt,
SUS304 (M6)
Weight: approx. 75 g
48
Two, 6-dia. holes
Nuts (M6)
(18)
40±2.0
(47)
BF-3(R)
BF-3(R)
BF-5(R)
Weight
BF-3: approx. 210 g
BF-3R: approx. 215 g
Two, 6-dia. holes
R19
Three, 26-dia. holes
64-dia. hole
1
120°
110
90
90
90
120°
Two, M5 × 25 mounting screws
Nut
Terminal
(M6)
bolt, SUS304
(M6)
1
Two, 6-dia. holes
74
20 dia.
Weight
BF-5: approx. 360 g
BF-5R: approx. 365 g
BF-5(R)
Two, 6-dia. hole
Five, 26-dia. hole
R13
Spring washer
23
8
110 dia.
(18)
22
50
90
90
76
90
40±2.0
(47)
(49)
50
(72)
BS-1(S)
BS-1
Connecting nut
SUS304
(provided)
Width
across
flats: 21.0
Terminal bolt,
SUS304
(M4) P = 0.7
76
M18
P = 1.5 *
Mounting Holes
Two, M4 P = 0.7
24 dia.
Clamping section (iron) 12
39
50
51
M18 P = 1.5 (fine screw thread)
101
*. If it is not necessary to seal the tank inside and outside.
The Electrode can be secured with F03-17 Nuts.
(Refer to page 1.)
Weight: approx. 70 g
BS-1S
BS-1S-1
BS-1S2
Terminal bolt,
SUS304
(M4) P = 0.7
Width
across
flats: 21.0
Connecting nut
SUS304
(provided)
Mounting Holes
*
Two, M4 P = 0.7
24 dia.
39
12
50
51
M18 P = 1.5 (fine screw thread)
101
*
BS-1S
M18 P=1.5
BS-1S-1
Taper pipe thread
PT1/2
JIS B 0203
BS-1S2
M18 P=1.5
3
BF-@(R)/BS-1(T)
(*1.)
BS-1T
Terminal bolt
SUS304
SUS316
Titanium
HAS B
HAS C
SUS
M4 nuts
SUS304
Mounting Holes
M18 × 1.5
Width across (*2.)
flats: 20.5
Two, M4
Connecting nut (provided)
(*3.)
(*4.)
11.5
12
17
HAS
Titanium
3 12
62
101
24 dia.
M18 P = 1.5 (fine screw thread)
19
20
*1. All of the clamping section is made of fluororesin.
*2. If it is not necessary to seal the tank inside and outside.
Material SUS304
SUS316
Titanium
HAS B
HAS C
The Electrode can be secured with F03-18 Nuts.
Weight Approx. 55 g Approx. 55 g Approx. 45 g Approx. 65 g Approx. 60 g
(Refer to page 1.)
*3. The material of the Connecting Nuts is the same as the
material of the BS-1T. Connecting Nuts made of HAS B,
HAS C, or titanium, however, do not have the screw or
screw hole labeled 2-M4 in the figure.
*4. The section shown with dotted lines is sold separately.
■ Safety Precautions
Refer to Safety Precautions for All Level Controllers.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
In the interest of product improvement, specifications are subject to change without notice.
4
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products
were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate
modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
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OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2020.11
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2020 All Right Reserved.