Long Stroke Displacement Transducer
Model VL7A AC-AC
DESCRIPTION
Model VL7A (spring return armature) ac-ac long stroke displace-
ment transducer is designed for measuring static and dynamic
displacements from ±0.5 in to ±3.0 in. This model achieve
impressive 0.25 % full scale non-linearities. Displacement trans-
ducer bodies and probes are constructed of stainless steel for
durability in harsh, industrial environments.
FEATURES
• 0.25 % non-linearity
• Stainless steel construction
• 12,7 mm to 76,2 mm [0.5 in to 3.0 in] range
• Enhanced immunity to electrical noise
• Innite resolution
• -58 °F to 257 °F operating range (standard)
• Spring return armature
• Not RoHS compliant
2 Honeywell • Sensing and Control
Model VL7A AC-AC
PERFORMANCE SPECIFICATIONS
Characteristic Measure
Stroke range ±12,7 mm to 76,2 mm [±0.5 in to 3.0 in]
Non-linearity (max.) ±0.25 % full scale
Non-repeatability (max.) <20 microinches
Output sensitivity See table
Resolution Innite
ENVIRONMENTAL SPECIFICATIONS
Characteristic Measure
Temperature, operating -50 °C to 125 °C [-58 °F to 257 °F]
Temperature effect, zero
(max.)
0.006 % full scale/°F
Temperature effect, span
(max.)
0.006 % full scale/°F
ELECTRICAL SPECIFICATIONS
Characteristic Measure
Element type ac-ac displacement transducer
Input supply (calibrated) 5 V RMS @ 5 kHz
Input supply (acceptable) 1 V to 7 V RMS @ 2 kHz to 10 kHz
Electrical termination Multiconductor shielded cable
MECHANICAL SPECIFICATIONS
Characteristic Measure
Case material Stainless steel
Probe material Stainless steel
Armature type Captive guided spring return
Probe thread Not applicable
Weight See table
Spring force (max.) 4 oz/in
RANGE CODES
Range Code Available ranges
HP ±12,7 mm [±0.5 in]
HQ ±25,4 mm [±1.0 in]
HR ±50,8 mm [±2.0 in]
HS ±76,2 mm [±3.0 in]
OPTION CODES
Range Code Many range/option combinations are available in
our quick-ship and fast-track manufacture pro-
grams. Please see http://sensing.honeywell.com/
TMsensor-ship for updated listings.
Stroke ranges ±12,7 mm to ±50,8 mm [±0.5 in to ±2.0 in];
76,2 mm [±3.0 in]
Electrical
termination
Multiconductor shielded cable (1,83 m [6 ft])
TM405. Axial Bendix connector on body radial
(side)
TM406. Bendix connector on body
Electrical cable
orientation
TM49. Axial cable exit
Mounting
threads
TM511. 13/16-32 UNF
Improved
linearity
L10. ±0.1 % max. linearity (less than or equal to
101,6 mm [±4.0 in]
Higher
temperature
TM315. 204 °C [400 °F] up to 101,6 mm [±4.0
in]
Honeywell • Sensing and Control 3
Long Stroke Displacement Transducer
MOUNTING DIMENSIONS
TYPICAL SYSTEM DIAGRAM
WIRING CODES
Range code Available stroke range L X Approx. unit weight Typical full scale output
at 3 V RMS
HP ±12,7 mm [±0.5 in] 135,89 mm [5.35 in] 38,1 mm [1.5 in] 184,27 g [6.5 oz] 2.4 V RMS
HQ ±25,4 mm [±1.0 in] 161,29 mm [6.35 in] 63,5 mm [2.5 in] 226,8 g [8.0 oz] 3.0 V RMS
HR ±50,8 mm [±2.0 in] 279,4 mm [11.0 in] 76,2 mm [3.0 in] 396,89 g [14 oz] 4.8 V RMS
HS ±76,2 mm [±3.0 in] 389,89 mm [15.35 in] 114,3 mm [4.5 in] 481,94 g [17 oz] 4.5 V RMS
Wire color Supply
Red (+) supply (calibrated @ 3 V RMS, 5 kHz)
Yellow Supply return
Blue Output
Green Output return
Black Secondary center tap (normally not connected)
For reference only
AA937
5
Sensing and Control
Automation and Control Solutions
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422 USA
+1-815-235-6847
www.honeywell.com/sensing
008751-1-EN IL50 GLO
May 2008
Copyright © 2008 Honeywell International Inc. All rights reserved.
Model VL7A AC-AC Long Stroke Displacement Transducer
Warranty. 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 ofce for
specic 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 nds
defective. The foregoing is buyer’s sole remedy and is in lieu
of all warranties, expressed or implied, including those of
merchantability and tness 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.
Specications 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.
For more information about Sensing and Control products, visit
www.honeywell.com/sensing or call +1-815-235-6847
Email inquiries to info.sc@honeywell.com
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.
WARNING
MISUSE OF DOCUMENTATION
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referenceonly.DONOTUSEthisdocumentasproduct
installationinformation.
•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.