GCD Serie s – DC Operate d Gage Heads
GCD Series Gage Heads Rev. 6 www.meas-spec.com 2015-July
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• Hermetically sealed housing
• 25 µ-inch [0.6 µm] repeatability
• IEC IP68 rating to 1,000 PSI [70 bars]
• Long strok es up to ±2 inches
• Hardened tool steel contact tip
• High side load resistance
• Long cycle life
DESCRIPTION
The GCD Series heavy-duty DC operated gage heads enable high performance in environments containing moisture, dirt,
and fluid contaminants. These Gage heads are spring loaded LVDTs (Linear Variable Differential Transformers) with
precision linear bearings and internal conditioning electronics. Operating on a nominal ±15VDC supply, the GCD Series
delivers an extremely linear, low noise ±10VDC output.
These robust gage heads allow measurements over stroke ranges from ±0.05 inch [±1.27mm] up to ±2 inches [±50.8mm].
The spring force is typically 9oz [255 grams] at fully compressed electrical stroke. A removable black-chromed, hardened
tool steel tip is threaded (4-48UNF-2A) to the working end. Internal construction prevents the core and shaft from rotating as
they move longitudinally. The integral electrical connector (welded) provides for easy installation and allows replacing a
damaged cable without sacrificing the sensor. Installation and adjustment are facilitated by an external ½-20 mounting
thread and the two locknuts supplied with each unit.
Like in most of our LVDTs, the GCD windings are vacuum impregnated with a specially formulated, high temperature,
flexible resin, and the coil assembly is potted inside its housing with a two-component epoxy. This provides excellent
protection against hostile environments such as high vibration and shock.
The ruggedness, long life cycle, and very high reliability of the GCD Series provide a low cost of ownership over the life of
the equipment onto which they are installed. The one-piece front end (barrel which contains the bearing assembly),
machined from solid stainless steel bar, coupled with a bronze bushing, has far greater resistance to bending forces and side
loads compared to other designs. This is particularly important on the longer stroke versions; it reduces the common risk of
probe damage/bending during installation or maintenance of industrial equipment. The GCD Series designs also require
fewer parts and weld joints, thereby increasing overall structural integrity and reliability.
MEAS offers options, such as mating connector plugs, special contact tips (including AGD dial indicator tips), air-
extend/spring retract, and cable assemblies. Also see our other models with built-in signal conditioning, GCD-SE (single-
ended DC voltage), GCT (4-20mA 2-wire loop) and GC-485 (RS-485 Digital Series), as well as the AC operated GCA.
Measurement Specialties, Inc. (NASDAQ MEAS) offers many other types of sensors and signal conditioners. Data sheets
can be downloaded from our web site at: http://www.meas-spec.com/datasheets.aspx
MEAS acquired Schae vitz Sensors and the SchaevitzTM trademark in 2000.
FEATURES APPLICATIONS
•
All-welded stainless steel construction
•
Factory automation
•
Resistant to harsh environments
•
Industrial printing equipment
•
MS type connector (MIL-C-5015)
•
Steel mills
•
Long cycle life
•
Metal thickness gaging
•
CE compliant
• Environments requiring hermetically sealed
transducers
•
Calibration certificate supplied with each unit
• Air extend/spring retract available (Consult factory)
• In-process measurements
(feedback loop with PLC or CNC controller)
GCD Series – DC O per a t e d Gage Heads
GCD Series Gage Heads Rev. 6 www.meas-spec.com 2015-July
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PERFORMANCE SPECIFICATIONS
ELECT RI CAL SPEC IFI CATIONS
Parameter
GCD-050
GCD-125
GCD-250
GCD-500
GCD-1000
GCD-2000
Stroke/gaging range
±0.050 [1.27]
±0.125 [3.17]
±0.25 [6.35]
±0.50 [12.7]
±1.0 [25.4]
±2.0 [50.8]
Sensitivity, volts/inch
200
80
40
20
10
5
Input voltage
Input current
Output at stroke ends
(Output is positive when the core is displaced from null towards the connector)
Non-linearity
Repeatability
Stability
Frequency response
(dynamic)
ENVIRONMENTAL SPECIFICATIONS & MATERIALS
Operating temperature
Survival temperature
Sho ck survival
Vibration tolerance
Housing material
Electrical connector
IEC 60529 rating
Notes:
All values are nominal unless otherwise noted
Dimensions are in inch [mm] unless otherwise noted
FR: Full Range is the stroke range, end to end; FR=2xS for ±S stroke range
FSO (Full Scale Output): Largest absolute value of the outputs measured at the ends of the range
WIRING INFORMATION
A through F: Connector pin assignments
GCD Series – DC O per a t e d Gage Heads
GCD Series Gage Heads Rev. 6 www.meas-spec.com 2015-July
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MECHANICAL SPECIFICATIONS
Parameter
GCD-050
GCD-125
GCD-250
GCD-500
GCD-1000
GCD-2000
Stroke/gaging range
±0.050 [1.27]
±0.125 [3.17]
±0.25 [6.35]
±0.5 [12.7]
±1 [25.4]
±2 [50.8]
Pre-travel
0.20 [5.1]
0.23 [5.8]
0.05 [1.3]
0.20 [5.1]
0.14 [3.6]
0.10 [2.5]
Over-travel (minimum)
0.39 [9.90]
0.25 [6.4]
0.20 [5.1]
1.0 [25.4]
0.15 [3.81]
0.00 [0.0]
Main body length “A”
2.66 [67.6]
3.5 [88.9]
4.37 [111.0]
6.06 [153.9]
8.31 [211.1]
11.63 [295.4]
Overall body length “B”
4.02 [102.1]
4.87 [123.7]
5.74 [145.8]
9.05 [229.9]
11.29 [286.8]
17.12 [434.8]
Plunger length “C”
(fully extended)
5.08 [129.0]
5.90 [149.9]
6.77 [172.0]
11.53 [292.9]
13.76 [349.5]
21.67 [550.4]
Weight, Ounce
2.5 oz
3.3oz
3.5 oz
5.5 oz
8.0 oz
14.0 oz
Weight, Gram
71 G
93 G
100 G
156 G
227 G
397 G
Spring force
Typically 9oz [255 grams] at fully compressed electrical stroke
REPLACEMENT/OPTIONAL CONT ACT TIP S
Dimensions are in inch [mm]
GCD Series – DC O per a t e d Gage Heads
GCD Series Gage Heads Rev. 6 www.meas-spec.com 2015-July
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ORDERING INFORMATION
Description
Model
Part Number
±0.050 inch gage head
GCD 050
02350509-000
±0.125 inch gage head
GCD 125
02350510-000
±0.25 inch gage head
GCD 250
02350511-000
±0.5 inch gage head
GCD 500
02350512-000
±1 inch gage head
GCD 1000
02350513-000
±2 inch gage head
GCD 2000
03350159-000
OPTIONS
Air extend/spring retract ga ge head (Consult factory)
All GC Series
XXXXXXXX-150
ACCESSORIES
Dual rail DC power supply (±15VDC)
PSD 40-15
02291339-000
Mating connector kit
PT06A-10-6S(SR)
62101011-000
Cable with wired mating connector (1)
GCD to Stripped/Tinned
04290583-000
Replacement contact tips
Contact Tip 2
67010005-000
Contact Tip 3
67010006-000
Contact Tip 4
67010002-000
Contact Tip 5
67010007-000
Contact Tip 6
67010008-000
Contact Tip 7
67010009-000
Contact Tip 8
67010010-000
Contact Tip 9
67010001-000
Contact Tip 10
67010011-000
(1) Cables are shiel ded, 10 foot long, and rated 80°C [176°F] operating. Consult factory f or other lengt hs.
Refer to our “Options and Accessories for Gage Head” data sheet.
TECHNICAL CONTACT INFORMATION
NORTH AMERICA
EUROPE
ASIA
Measurement Specialties, Inc.
1000 Lucas Way
Hampton, VA 23666
United States
Phone: +1-800-745-8008
Fax: +1-757-766-4297
Email: sales@meas-spec.com
Web: www.meas-spec.com
MEAS Deutschland GmbH
Hauert 13
D-44227 Dortmund
Germany
Phone: +49-(0)231-9740-0
Fax: +49-(0)231-9740-20
Email: info.de@meas-spec.com
Web: www.meas-spec.com
Measurement Specialties China Ltd.
No. 26, Langshan Road
High-tech Park (North)
Nanshan District, Shenzhen 518057
China
Phone: +86-755-33305088
Fax: +86-755-33305099
Email: info.cn@meas-spec.com
Web: www.meas-spec.com
The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for
inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the
manufacturer. Measurem ent Specialt ies, I nc. reserves the right to make c hanges without further not ic e to any product herein. Measurement
Specialti es, Inc. makes no warran ty, represent ation or guarantee re garding the suit ability of its product f or any partic ular purpose, nor d oes
Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims
any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different
applications. All operating parameters must be validated for each customer application by customer’s technical experts. Measurement
Specialti es, Inc. does not convey any lic ense under its patent rights nor the rights of others.
Mouser Electronics
Authorized Distributor
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TE Connectivity:
02350510-000 02350511-000 67010001-000