Condition Sensors
Designed to Produce High-Quality Results
in a Variety of Rugged Environments
CONDITION
SENSING
Rockwell Automation® offers an impressive line of Allen-Bradley®
Condition Sensing products to meet virtually every application need.
With models capable of detecting pressure, temperature, flow
and level, Allen-Bradley® Solid-State and Electromechanical sensors
and switches offer exceptional control for automatic operation of
machines and processes.
APPLICATIONS
Pressure
Temperature
Flow
Level
• Pump control
• Monitoring of pneumatic/
hydraulic systems
• Machine tools
• Monitoring clamping
pressure
• Air compressors
• Lubricant and coolant
pressures
• Monitoring injection
molding temperature
• Automotive and
machine tool
• Hydraulics and
batch processing
• Ovens, machine coolants
and die temperatures
• Pump dry run protection
• Ideal for monitoring
cooling water circulation
systems and pump
functionality
• Process leak, lubrication
systems and filter
monitoring in the
beverage industry
• Liquid level monitoring,
not affected by foam
• Filtering systems
• Coolant and lubricant
tanks
• Pump protector program
support
• Overspill protection and
leakage monitoring
The illustration below demonstrates measurement of pressure, temperature, flow, and level using solid-state
condition sensors to monitor a cooling circuit.
Tank level
monitoring
Cooling
system
From Reactor
Pump pressure
monitoring
To Reactor
Cooling water
storage tank
Temperature and
flow control
Heat exchanger
Rockwell Automation® knows Condition Sensing controls are vital components
in today’s control systems. High-accuracy, new technology, and rigid standards
are combined to manufacture these reliable world-class products.
SOLID-STATE CONDITION
SENSORS AND SWITCHES
If you are looking for high accuracy, repeatability, a compact-fit and transmitter-based
options, our microprocessor-based solid-state sensors are the ideal solution.
Display Model
(836E Pressure shown)
Manual and
software
programmable
Analog and
discrete outputs
Compact design
for tight
applications
4-digit
14-segment
digital display
High-visibility
status LED
Ultrasonic
vibrating fork
technology
Wide variety of
probe lengths
Sanitary
adapters
available
AC and DC
models
4...20 mA
analog output
316L Stainless steel
sensing element
310º
rotatable
housing
Level Model
(840E shown)
Non-display Model
(837E Temperature shown)
Operational
verification with
test magnet
316L
Stainless steel
fork
ELECTROMECHANICAL
CONDITION SWITCHES
For AC loads and DC loads over 250 mA, these rugged NEMA-style
electromechanical condition switches offer exceptional performance.
836 Pressure
836T Pressure
Adjustable
ranges
837 Temperature
Bellows type
available in
copper alloy
or Stainless steel
Protective armor
available in
bronze or
Stainless steel
Standard
and custom
refrigeration
controls available
Wide variety
of contact
arrangements
2-circuit or 4-circuit
electronically isolated
contact blocks
Direct vertical
and horizontal
inversion
available
PRESSURE
Solid-State 836E
Allen-Bradley® 836E pressure sensors are capable of measuring pressure of liquid, gas, vapor
and dust. The product family consists of different pressure ranges from -15 to 6000 psi,
offering both discrete and analog outputs. We offer a large number of process connections
as well as sanitary adapters.
Display
Non-display
• Rugged, corrosion-resistant 316L Stainless steel housing with IP66 enclosure rating
• Rugged, corrosion-resistant 304 Stainless steel housing with IP65 enclosure rating
• Operating pressures from -15...6000 psi (gauge)
• Operating pressures from 0...6000 psi (gauge)
• Four-digit 14-segment digital display
• 4...20 mA analog output
• Independently programmable dual
PNP NO/NC outputs or 4...20 mA analog output with single PNP NO/NC
• 316L Stainless steel sensing element
• 316L Stainless steel sensing element
• 4x turndown in pressure sensing range using PC software
• Selectable units of measurement:
kPa, psi, bar, or %
Non-display
Display
Pressure Ranges (psig)
-15…15
0…60
0…150
0…600
0…1500
0…6000
Electrical Outputs
2PNP
1PNP + 4…20 mA
Enclosure Rating
IP60 up to 60 psi,
IP66 for all others
Process Connections
Male
NPT 1/4”
BSPP G1/4”
SAE 7/16”-20UNF
Female
NPT 1/4”
BSPP G1/4”
SAE 7/16”-20UNF
Sanitary
Base switch
3/4” adapter
1…1.5” adapter
2” adapter
Pressure Ranges (psig)
0…15
0…50
0…150
0…500
0…1500
0…6000
Electrical Outputs
4…20 mA
Enclosure Rating
IP65
Process Connections
Male
NPT 1/4”
NPT 1/2”
1
/2” MNPT + 1/4” FNPT
BSPP G1/2”
BSPP G1/4”
Flush mount
PRESSURE
Electromechanical 836 and 836T
Allen-Bradley® 836 Pressure Controls are designed to control or monitor the operating conditions
of many types of pneumatic or hydraulic applications. When properly applied they can improve
processes and systems, protect expensive equipment, and help safeguard operators. Precisely
engineered for exceptional repeat accuracy, the 836T Pressure Controls are designed to meet
the traditional requirements of the transportation and machine tool industries.
836
836T
• Adjustable differential ranges
from 0.2 …125 psi
• Externally adjustable
differential from 1.5 …3000 psi
• Copper alloy or Stainless
steel bellows
• Bellows type available in copper alloy or Stainless steel
• Wide variety of contact
arrangements
• Piston type actuators
available with or without seal 1 … 70 psi adjustable difference range
• Standard and custom
refrigeration controls available
• Adjustable differential from
1 … 50 psi
836
Pressure Ranges (psig)
30 in. Hg vac to 900 psi
(Independently
adjustable trip/reset
and differential settings)
Electrical Outputs
Non-inductive 5A, 240V / 3A, 600V
Control Circuit AC-125 VA, 24….600V
DC - 57.5VA, 115…..230V
Pilot Light Indicator
(Optional)
Enclosure Rating
Open Type, Type 1, 4X,
4 & 13, 7 & 9 and
4 & 13 combination
836T
Process Connections
/4” FNPT
/8” FNPT
7
/16”-20 SAE
copper tubing
1
3
Pressure Range
30 in. Hg vac to 5000 psi
(Independently
adjustable trip/reset
and differential settings)
Electrical Outputs
2 Circuit - NEMA A600
4 Circuit - Nema B150
Pilot Light Indicator
(Optional)
Enclosure Rating
Type 4 & 13 and 7 & 9
and 4 & 13 combination
Style T - Type 1, 4 & 13,
IEC IP66
Process Connections
NPT 1/4”
NPT 1/2”,
1
/2” MNPT + 1/4” FNPT
BSPP G1/2”
BSPP G1/4”,
Flush mount
TEMPERATURE
Solid-State 837E
Allen-Bradley® Temperature sensors are capable of measuring temperature in liquids, gases and vapors in the range
from -50 to 150°C (-58 to 302°F). Three different probe insertion lengths are available for Display and Non-display models.
Display
Non-display
• Rugged, corrosion-resistant 316L Stainless steel housing with IP66 enclosure rating
• Rugged, corrosion-resistant 316L Stainless steel housing with IP67
enclosure rating
• Media temperature range from -50...150°C (-58...302°F)
• Media temperature range from -50...150°C (-58...302°F)
• Operating temperature from -40...85°C (-40...185°F)
• Operating temperature from -40...85°C (-40...185°F)
• Four-digit 14-segment digital display
• Independently programmable dual PNP N.O./N.C. outputs or 4...20 mA analog output with single PNP N.O./N.C. output
• 4...20 mA analog output PC programmable via the M12 connector
• 316L Stainless steel probe
• 316L Stainless steel probe
• Selectable units of measurement: °C, °F, or °K
837E Non-display
837E Display
Probe lengths
50 mm
100 mm
200 mm
Electrical Outputs
2PNP
1PNP + 4…20 mA
Enclosure Rating
Process Connections
Male
NPT 1/4”
NPT 1/2”
BSPP G1/4”
BSPP G1/2”
Sanitary
Base switch
1…1.5” adapter
2” adapter
IP66
Electromechanical 837
Allen-Bradley® 837 Electromechanical Temperature Controls
are rugged, industrial-grade solutions that use vapor pressure
technology to sense changes in temperature.
• Packing glands in brass and
thermostat wells in either brass or Stainless steel are available
• Adjustable ranges from -60°... +570°F
• Adjustable differential from 2°... 87°F
• Wide variety of contact arrangements
Probe lengths
Process Connections
50 mm
100 mm
200 mm
Electrical Outputs
4…20 mA
Enclosure Rating
Male
NPT 1/4”
NPT 1/2”
BSPP G1/4”
Sanitary
1…1.5” adapter
2” adapter
IP67
837 Electromechanical
Probe lengths
Direct Immersion (Horizon and Vertical)
or Remote Bulb and Capillary Sensing
Element (Standard lengths - 3, 6, 12, 20
and 30-foot lengths)
Electrical Outputs
Non-inductive - 5A, 240V / 3A, 600V
Control Circuit - AC-125 VA, 24….600V
DC - 57.5 VA, 115…..230V
Pilot Light Indicator (Optional)
Enclosure rating
Open Type, Type 1, 4X, 7 & 9, 4 & 13,
and 4 & 13 combination
Process Connections
NPT 1/2 & 3/4 and
Direct immersion
FLOW
Solid-State 839E
Allen-Bradley® 839E Flow Sensors monitor and display liquid media flow rate in the range from 0.03 to 3 m/s (0.1 to 9.84 ft/s).
Available with two different probe insertion lengths, this sensor is capable of measuring both flow and temperature.
• Rugged, corrosion-resistant 316L Stainless steel housing with IP66 enclosure rating
• Flow rates of liquid media (calorimetric measuring principle) in the range from 0.03...3 m/s (0.1...9.84 ft/s)
• Four-digit 14-segment digital display
• Dual N.O./N.C. programmable PNP outputs or 4...20 mA analog output with single PNP output
• 316L Stainless steel probe
• Selectable units of measurement:
°C, °F, or %
839E
Probe lengths
30 mm
100 mm
Enclosure rating
IP66
Electrical outputs
2PNP
1PNP + 4…20 mA
Process Connections
Male
NPT 1/4”
NPT 1/2”
BSPP G1/4”
BSPP G1/2”
Sanitary
Base switch
1…1.5” adapter
2” adapter
LEVEL
Solid State 840E
Allen-Bradley® 840E level switches are microprocessor based and designed to withstand harsh industrial conditions
and wash-down applications such as liquid level monitoring in tanks, containers and pipelines. Available in both AC
and DC versions, these switches are not affected by foam and are immune to vibration and build-up.
•
Rugged, corrosion-resistant 316L Stainless steel housing with IP66/67 rating for DC type and IP65 for AC type enclosure
• DC PNP version with M12 connector
• AC version with NPT /2” valve connector
1
• 316L Stainless steel
sensing element
• On-site control via high-visibility status LED
• Discrete NO/NC level switch is based on ultrasonic vibrating fork technology
• Easy-to-install
Solid State 840E
Power supply
DC-PNP with M12
connector
AC with NPT 1/2” valve
connector”
Enclosure Rating
IP65 (AC version)
IP66/67 (DC version)
Electrical Outputs
NO/NC
Process Connections
Male
NPT 1/2”
NPT 3/4”
BSPP G1/2”
ACCESSORIES
Sanitary Connections
• Ideal for Food & Beverage and pharmaceutical applications
• Available for solid-state pressure, temperature and flow sensors
• 11/2” and 2” sanitary clamps (standard tri-clamp configuration)
are available for the 836E, 837E and 839E models.
Also a 3/4” clamp is available for the 836E display sensor.
• Flush fittings for contact with consumables
• 3A approved
ReadWin 2000 Software
• Free programming software for solid-state sensors
• Quick setup for multiple sensors
• Store parameters for easy sensor replacement
• Charting feature stores and displays historical device parameters
Connectivity
Rockwell Automation® offers a complete line of Allen-Bradley®
patchcords and cordsets for use with condition sensors. Refer to our
Sensors catalog for the full range of connectivity solutions.
Rockwell Automation® offers a breadth of quality Allen-Bradley® components to fit your specific needs.
In order to assist you with your component selection, we offer a variety of configuration and selection tools.
Local Distributor
Call 1.800.223.3354 to contact your local Distributor today.
http://www.rockwellautomation.com/distributor/
Condition Sensors Website
Check out our Website to learn how our Condition Sensors can help you. Connect to our online catalog
from the web to perform product searches, download pages in pdf format, receive helpful installation tips
and so much more.
http://ab.rockwellautomation.com/Sensors-Switches/Condition-Sensors
Product Selection Toolbox
applying our products.
http://www.rockwellautomation.com/en/e-tools/
guration tools assist you in choosing and
Catalogs
nd an extensive selection of essential Allen-Bradley component products.
http://www.ab.com/catalogs/
Publication 836E-BR001B-EN-P – May 2011
Copyright ©2011 Rockwell Automation, Inc. All Rights Reserved. Printed in USA.
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