CTS-420 Series – Position Transmitter System
CTS-420 Series Rev. 6 www.meas-spec.com 2015-July
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• 4-20mA 2-wire current loop operation
• Linear stroke ranges from 0.25 to 10 inches
• Rotary vers ion 0 to 90º
• Wide oper ating temperature range
• Compact size
• Remote sens o r operation up to 35 ft [10m]
• MS style hermetic connector on the sensors
• Rugged splash-proof electronics housing
(optional)
DESCRIPTION
The CTS-420 Series is a 2-wire current loop position transmitter system especially suited to measurements in process
industries. Each system consists of either an HCI Series LVDT linear position sensor or an R36AS RVDT rotary position
sensor, along with an ele ctronics module which provides a 4-20mA current loop output.
The CTS-420 operates on an unregulated 10 to 36VDC supply voltage. The electronics module provides the position sensor
with the required AC voltage excitation voltage and converts the AC voltage output into a smooth 4-20mA signal. The zero
and span adjustment potentiometers, as well as the sensor and loop supply connection terminals, are all conveniently
located on the front panel for easy installation and calibration.
The HCI LVDT is constructed of stainless steel and is hermetically sealed. Like in most of our LVDTs, the HCI 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. Both the LVDT and the RVDT sensors feature an integral welded-on electr i cal h ermet ic connector.
The CTS-420 is ideal for applications where the sensor must be remotely located from the electronics (up to 35 feet away)
due to environmental or space considerations. In addition, inductance and capacitance levels are well below the levels set
for intrinsic safety requirements.
Also see our other 4-20mA position transmitter models; PTS-420 (rugged housing, IP-65 LVDT), HCT (2-wire LVDT
transmitter), GCT (heavy-duty gage head), and RVIT 15-120i (Rotary Variable Inductance Transmitter).
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
Measurement Specialties acquir ed Scha ev itz Sensors and the SchaevitzTM trademark in 2000.
FEATURES APPLICATIONS
• 4-20mA 2-wire current loop operation
• Process industry
• Linear or rotary position sensing
• Remote, oil field valve position monitoring
• Zero and span adjustable
• Ship-board turbine throttle position control
• Hermetically sealed (LVDT only)
• Paper mill head box position
• Imperial or metric threaded core (LVDT)
• Rolling mill roller gap feedback
• Cable assembly up to 35ft. (optional)
• Damper control on fossil fuel power plants
CTS-420 Series – Position Transmitter System
CTS-420 Series Rev. 6 www.meas-spec.com 2015-July
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PERFORMANCE SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
Parameter
CTS-420 250
CTS-420 500
CTS 420-1000
CTS-420 2000
CTS-420 4000
CTS-420 10000
CTS-420 0-90
Measurement range
0.250 [6.35]
0.500 [12.7]
1.0 [25.4]
2.0 [50.8]
4.0 [101.6]
10.0 [254]
0 to 90º
Non-linearity, max.
±0.5% of FR
±1.5% of FR
Temperature
coefficient of sen sitiv ity ±0.02%/ºF [±0.036%/ºC]
Loop supply voltag e
10 to 36VDC
Output
4 to 20mA
Output at null position
12mA (null position is defined as the mid-range position)
Max loop resistance
595 ohms @ 24VDC
(see loop resistance chart below)
Stability
0.05% of FSO after 30 minutes warm up
Frequency response
100Hz @ -3db
Controls
Zero and span potentiometers, 10 turns
ENVIRONMENTAL AND MATERIAL SPECIFICATIONS
Operating temperature range (LVDT/RVDT)
-67ºF to +300ºF [-55ºC to + 150ºC]
Operating temperature (Electronics module)
-40ºF to +200ºF [-40ºC to +95ºC]
Housing material (LVDT/RVDT)
AISI 400 Series stainless steel
Electrical connections (LVDT/RVDT)
6-pin MS type connector (MIL-C-5015)
IEC 60529 rating (LVDT)
IP68 to 1,000 PSI [70 bars] with use of proper mating connector plug
Notes:
All values are nominal unless otherwise noted
Dimensions are in inch [mm] unless otherwise noted
FR: Full Range is the range, end to end; FR=S for a 0 to S range
FSO (Full Scale Output): Largest absolute value of the outputs measured at the ends of the range
WIRING SCHEMATIC & LOOP RESITANCE
A through F: Connector pin assignments
CTS-420 Series – Position Transmitter System
CTS-420 Series Rev. 6 www.meas-spec.com 2015-July
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MECHANICAL SPECIFICATIONS – LVDT, HCI SERIES
Parameter
CTS-420 250
CTS-420 500
CTS-420 1000
CTS-420 2000
CTS-420 4000
CTS-420 10000
Main body length “A”
2.50 [63.5]
3.84 [97.5]
5.03 [127.8]
7.29 [185.2]
10.68 [271.3]
19.7 [500.4]
Core length “B”
1.10 [27.9]
1.80 [45.7]
3.00 [76.2]
3.80 [96.5]
5.00 [127.0 ]
6.2[157.5]
Center of core at null “P”
0.96 [24.4]
1.52 [38.6]
2.23 [56.6]
3.32 [84.3]
5.05 [128.3]
9.53 [242.1]
Bore depth “C”
1.91 [48.5]
3.25 [82.5]
4.46 [113.3]
6.72 [170.7]
10.2 [259.1]
19.12 [485.6]
Body weight, oz [g]
1.73 [49]
2.58 [73]
2.93 [83]
5.22 [148]
5.64 [160]
10.30 [292]
Core weight, oz [g]
0.11 [3]
0.14 [4]
0.28 [8]
0.39 [11]
0.46 [13]
0.49 [14]
MECHANICAL SPECIFICATIONS – RVDT, MODEL R36AS
MECHANICAL SPECIFICATIONS – ELECTRONICS MODULE
Dimensions are in inch [m m ]
CTS-420 Series – Position Transmitter System
CTS-420 Series Rev. 6 www.meas-spec.com 2015-July
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ORDERING INFORMATION
Description
Model
Part Number
Transmitter system with 0.25 i nch stroke LVDT
CTS-420 250
02291277-000
Transmitter system with 0.50 i nch stroke LVDT
CTS-420 500
02291278-000
Transmitter system with 1 inch stroke LVDT
CTS-420 1000
02291279-000
Transmitter system with 2 inch stroke LVDT
CTS-420 2000
02291280-000
Transmitter system with 4 inch stroke L VDT
CTS-420 4000
02291281-000
Transmitter system with 10 inch stroke LVDT
CTS-420 10000
02291282-000
Transmitter system with 0 to 90o range RVDT
CTS-420 0-90
02291283-000
OPTIONS
Metric threaded core (M3 x 0.5 – 6H) LVDT
XXXXXXXX
-006
Guided core LVDT
XXXXXXXX-010
Metric threaded, guide core
XXXXXXXX
-016
ACCESSORIES
Mounting block for LVDTs
04560950-000
R-Flex Multipur po se Coupli ng Kit for RVDT
66530072-000
Mating connector kit for LVDT or RVDT
PT06A-10-6S(SR)
62101011-000
LVDT/RVDT to CTS 420 cable, PT06A-10-6S to Stripped/Tinned
(1)
04290417-000
JIC electroni cs enc losur e
61403006-000
CTS Electronics module onl y (without LVDT or RVDT)
04290398-000
(1) Cables are shielded, 10 foot long, and are rated 80°C [176°F] operating. Consult fac tory for other length s.
Refer to our “ Acces sories for LVDTs” data sheet for our LVD T signal conditioning instr um entat ion and other ac ce ssor ies .
Refer to our “RVDT and RVIT Accessories” data shee t for ot her acce ss orie s.
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.
