Power Output
Industrial VRS Magnetic
Speed Sensors
DESCRIPTION
Power Output VRS sensors are designed for driving low
resistance loads at large air gaps in applications where larger
actuators may be used.
Passive VRS (Variable Reluctance Speed) Magnetic Speed
sensors are simple, rugged devices that do not require an
external voltage source for operation.
A permanent magnet in the sensor establishes a fixed
magnetic field. The approach and passing of a ferrous metal
target near the sensor’s pole piece (sensing area) changes the
flux lines of the magnetic field, dynamically changing its
strength. This change in magnetic field strength induces a
current into a coil winding which is attached to the output
terminals.
The output signal of a VRS sensor is an ac voltage that varies
in amplitude and wave frequency as the speed of the
monitored device changes, and is usually expressed in peak to
peak voltage (Vp-p).
One complete waveform (cycle) occurs as each target passes
the sensor’s pole piece. If a standard gear were used as a
target, this output signal would resemble a sine wave if viewed
on an oscilloscope.
Honeywell also offers VRS sensors for general purpose, high
output, high resolution, high temperature and hazardous
location applications, as well as low-cost molded versions.
FEATURES
• Self-powered operation
• Direct conversion of actuator speed to output frequency
• Simple installation
• No moving parts
• Designed for use over a wide range of speeds
• Adaptable to a wide variety of configurations
• Customized VRS products for unique speed sensing
applications
• Housing diameter: 5/8 in (M16)
• Housing material/style: stainless steel threaded
• Terminations: MS3106 connector, preleaded
• Output voltage: 70 Vp-p
POTENTIAL APPLICATIONS
• Engine RPM (revolutions per minute) measurement on
aircraft, automobiles, boats, buses, trucks and rail
vehicles
• Motor RPM measurement on drills, grinders, lathes and
automatic screw machines
• Motor RPM measurement on precision camera, tape
recording and motion picture equipment
• Process speed measurement on food, textile, paper,
woodworking, printing, tobacco and pharmaceutical
industry machinery
• Motor speed measurement of electrical generating
equipment
• Speed measurement of pumps, blowers, mixers, exhaust
and ventilating fans
• Flow measurement on turbine meters
• Wheel-slip measurement on autos and locomotives
• Gear speed measurement
Power Output
2 www.honeywell.com/sensing
5/8 INCH (M16*) SENSORS (All dimensions for reference only. mm/[in])
*Contact Honeywell for availability of metric mounting thread versions.
General Specifications Test Condition Specifications
Parameter Characteristic Parameter Characteristic Parameter Characteristic
Min. output voltage 70 Vp-p Inductance 85 mH max. Surface speed 25 m/s
[1000 in/s]
Coil resistance 120 Ohm to 162 Ohm Gear pitch range 12 DP (module 2.11)
or coarser
Gear 8 DP
(module 3.17)
Pole piece
diameter
4,75 mm [0.187 in] Optimum actuator 8 DP (module 3.17)
ferrous metal gear
Air gap 0,127 mm
[0.005 in]
Min. surface
speed
0,38 m/s [15 in/s] typ. Max. operating
frequency
40 kHz typ.
Operating temp.
range
-55 ºC to 120 ºC
[-67 ºF to 250 ºF]
Vibration Mil-Std 202F
Method 204D
Mounting thread 5/8-18 UNF-2A Termination MS3106 connector
Load
resistance
1.25 kOhm
Catalog
Listing
Thread
Length (A)
Weight
3040AN
3040AN25
3040AN30
3040AN40
3040AN50
28 mm [1.1 in]
63 mm [2.5 in]
76 mm [3.0 in]
101 mm [4.0 in]
127 mm [5.0 in]
70 g [2.5 oz]
84 g [3.0 oz]
84 g [3.0 oz]
98 g [3.5 oz]
128 g [4.5 oz]
General Specifications Test Condition Specifications
Parameter Characteristic Parameter Characteristic Parameter Characteristic
Min. output voltage 70 Vp-p Inductance 85 mH max. Surface speed 25 m/s
[1000 in/s]
Coil resistance 120 Ohm to 162 Ohm Gear pitch range 12 DP (module 2.11)
or coarser
Gear 8 DP
(module 3.17)
Pole piece
diameter
4,75 mm [0.187 in] Optimum actuator 8 DP (module 3.17)
ferrous metal gear
Air gap 0,127 mm
[0.005 in]
Min. surface
speed
0,38 m/s [15 in/s] typ. Max. operating
frequency
40 kHz typ.
Operating temp.
range
-55 ºC to 120 ºC
[-67 ºF to 250 ºF]
Vibration Mil-Std 202F
Method 204D
Mounting Thread 5/8-18 UNF-2A Termination 20 AWG Teflon-
insulated leads
Load
resistance
1.25 kOhm
Catalog
Listing
Thread
Length (A)
Weight
3040S20
3040S30
50 mm [2.0 in]
76 mm [3.0 in]
70 g [2.5 oz]
84 g [3.0 oz]
Industrial VRS Magnetic Speed Sensors
Honeywell Sensing and Control 3
5/8 INCH (M16*) SENSORS CONTINUED (All dimensions for reference only. mm/[in])
*Contact Honeywell for availability of metric mounting thread versions.
General Specifications Test Condition Specifications
Parameter Characteristic Parameter Characteristic Parameter Characteristic
Min. output voltage 70 Vp-p Inductance 85 mH max. Surface speed 25 m/s
[1000 in/s]
Coil resistance 120 Ohm to 162 Ohm Gear pitch range 12 DP (module 2.11)
or coarser
Gear 8 DP
(module 3.17)
Pole piece
diameter
4,75 mm [0.187 in] Optimum actuator 8 DP (module 3.17)
ferrous metal gear
Air gap 0,127 mm
[0.005 in]
Min. surface
speed
0,38 m/s [15 in/s] typ. Max. operating
frequency
40 kHz typ.
Operating temp.
range
-55 ºC to 120 ºC
[-67 ºF to 250 ºF]
Vibration Mil-Std 202F
Method 204D
Mounting thread 5/8-18UNF-2A Termination 20 AWG Teflon-
insulated leads, conduit
mount
Load
resistance
1.25 kOhm
Catalog
Listing
Weight
3040H20 140 g [5.0 oz]
General Specifications Test Condition Specifications
Parameter Characteristic Parameter Characteristic Parameter Characteristic
Min. output voltage 70 Vp-p Inductance 85 mH max. Surface speed 25 m/s
[1000 in/s]
Coil resistance 120 Ohm to 162 Ohm Gear pitch range 12 DP (module 2.11)
or coarser
Gear 8 DP
(module 3.17)
Pole piece
diameter
4,75 mm [0.187 in] Optimum actuator 8 DP (module 3.17)
ferrous metal gear
Air gap 0,127 mm
[0.005 in]
Min. surface
speed
0,38 m/s [15 in/s] typ. Max. operating
frequency
40 kHz typ.
Operating temp.
range
-55 ºC to 120 ºC
[-67 ºF to 250 ºF]
Vibration Mil-Std 202F
Method 204D
Mounting thread 5/8-18 UNF-2A Termination MS3106 connector
Load
resistance
1.25 kOhm
Catalog
Listing
Thread
Length (A)
Weight
3040A
3040A25
35 mm [1.4 in]
63 mm [2.5 in]
70 g [2.5 oz]
84 g [3.0 oz]
Automation and Control Solutions
Sensing and Control
Honeywell
1985 Douglas Drive North
Minneapolis, MN 55422
www.honeywell.com/sensing
005880-1-EN IL50 GLO Printed in USA
March 2007
Copyright © 2007Honeywell International Inc. All rights reserved.
WARNING
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the
product could result in personal injury.
Failure to comply with these instructions could result
in death or serious injury.
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship. Honeywell’s
standard product warranty applies unless agreed to otherwise
by Honeywell in writing; please refer to your order
acknowledgement or consult your local sales office for specific
warranty details. If warranted goods are returned to Honeywell
during the period of coverage, Honeywell will repair or replace,
at its option, without charge those items it finds defective. The
foregoing is buyer’s sole remedy and is in lieu of all other
warranties, expressed or implied, including those of
merchantability and fitness for a particular purpose. In no
event shall Honeywell be liable for consequential, special,
or indirect damages.
While we provide application assistance personally, through
our literature and the Honeywell web site, it is up to the
customer to determine the suitability of the product in the
application.
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this
printing. However, we assume no responsibility for its use.
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this product sheet is for
reference only. Do not use this document as a product
installation guide.
• Complete installation, operation, and maintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result in
death or serious injury.
SALES AND SERVICE
Honeywell serves its customers through a worldwide network
of sales offices, representatives and distributors. For
application assistance, current specifications, pricing or name
of the nearest Authorized Distributor, contact your local sales
office or:
E-mail: info.sc@honeywell.com
Internet: www.honeywell.com/sensing
Phone and Fax:
Asia Pacific +65 6355-2828
+65 6445-3033 Fax
Europe +44 (0) 1698 481481
+44 (0) 1698 481676 Fax
Latin America +1-305-805-8188
+1-305-883-8257 Fax
USA/Canada +1-800-537-6945
+1-815-235-6847
+1-815-235-6545 Fax
