Temposonics
®
®
Magnetostrictive, Absolute, Non-contact
Linear-Position Sensors
C-Series Core Sensor Models CS and CM
Analog or SSI Outputs
Data Sheet
SENS
O
RS
Document Part Number
551020 Revision L
Core sensor
Models CS/CM
FeatuReS
Core Sensor with
H2 housing
Core sensor Model with
M Style Housing
MaRKetS
Medical treatment equipment and Mobility Devices
entertainment automation
Marine Steering and trim
HVaC
Food Preparation and exercise equipment
Off-Road equipment
Suspension
any High-Volume Markets that Require Low-Cost, embeddable
Position Sensing
Non-Contact - No Wear -Such as Found With Pot Wipers On
Conductive Mylar, Particularly When Mounted On Dithered
actuators or Vibrating Installations
Stroke Length 72 mm (2.83 in.) to 250 mm (9.84 in.)
Low Power Needs - allows use With Printed Circuit-Level
Supplies of +5 Vdc or +12 Vdc
No Drift - No Periodic Re-Calibration Needed
Optional Housings - allows exposed use by Offering Mounting
Options and Several Levels of environmental Protection
Optional Magnet Choices allow Greater Range of Installation
Configurations
Customizable active Zones - Offers Full Output Sensitivity for
Smaller active Zones◊
Customizable Reading Direction - Forward or Reverse acting
analog Output allows Match to Control Requirements◊
◊
Contact factory for more information
BeNeFItS
embeddable Core Sensor Design allows OeMs to Reduce the
Cost of Sensor Installation By Providing appropriate Sensor
environmental Protection via their Product Design.
When embedding the Sensor is Not Viable, two Optional
environmental Housings allow the Core Sensor to Be used In
a Variety of Service environments, Including High Pressure and
Liquid Level.
Light Weight - Ideal For Small or Portable OeM Products
Low Cost - total Cost Competitive With Linear Pots or LVDt’s -
Initial Cost + Warranty + Cost of Goodwill.
Small Size - this Is the Smallest Package In the Market that
Has all the Benefits Of Magnetostrictive Sensing and Fits Where
No Other Magnetostrictive Sensor Can
aPPLICatIONS
OeM Products that Require an embedded, tightly Integrated
Sensor Solution
externally Mounted Continuous Position or Liquid-Level
Measurement
Product overview
The Core Sensor is a complete, functional sensor in every respect
making it ideal for embedded sensor applications where the OEM
product provides all the environmental protection necessary for the
application and any additional sensor protective housing would be re-
dundant, representing unnecessary cost in extremely cost sensitive
moderate to high volume OEM products.
There are two C-Series Core sensor models, CS and CM. Model CS is
available in a analog voltage and is used for general applications offer-
ing a 5 volt supply and has a ratiometric output. The model CM analog
voltage sensor is available in two version and is intended for mobile
equipment applications that operates off 12 volts, has an internal ref-
erence voltage that makes the output independent of power supply
fluctuations, and offers extended EMI performance and extended over
voltage protection.
The model CM sensor is also available with SSI serial digital output
that runs off 5 or 12 volts and has a 24 bit, 5 volt high output. C-Series
Core Sensors are also available with accessory housings that afford
environmental protection and mounting options when embedding is
not appropriate for the application. They are factory assembled with
the sensor ready to use. These housings can be used in high pres-
sure applications such as cylinders, immersed with a float for liquid
level measurement, and as a means to add sensors as an aftermarket
upgrade.
All specifications are subject to change. Contact MTS for specifications and
engineering drawings that are critical to your application. Drawings contained
in this document are for reference only. Go to http://www.mtssensors.com for
the latest support documentation and related media.
C-Series Core Sensor, Models CS/CM
Product Specifications
Product specifications
Parameters
OutPutS
Measured
output
variables:
Resolution:
Linear position, single magnet
analog:
Infinite (limited by ripple on the
power supply)
Digital:
100 µm standard, 50 µm possible on
custom basis
analog:
500 Hz (2 ms period)
Digital:
1500 Hz (0.6 ms period)
±
0.3 mm full stroke , ± 0.15 mm without
correction using a 401842 magnet between
null +10 mm and full scale -10 mm
± 25 µm
± 25 µm
CS:
2% to 98% of 5 Vdc supply, ratiometric
with supply
CM:
0.1 Vdc to 4.9 Vdc at 12 Vdc supply
(not ratiometric with supply)
Synchronous Serial Interface (SSI)
(RS-422 type differential signal pairs)
Data format:
Binary standard (gray code
optional), optional parity bit
Data length:
24 bit
Data speed (Baud rate):
100 kBd to 400
kBd, depending on cable length (see below)
< 50
<100
<200
Specifications
Parameters
eLeCtRONICS
Operating
Voltage:
Supply current:
Over voltage
protection:
Output short to
ground:
Polarity
protection:
Output load:
eNVIRONMeNtaL
Operating
conditions:
Specifications
CS analog:
5 Vdc, - 5%, + 10 %
CM analog:
12 Vdc, ± 25 %
CM SSI:
12 Vdc, - 15%, +20%
analog:
40 mA typical
SSI:
80 mA typical
CS analog:
Up to 20 Vdc
CM analog:
Up to 30 Vdc
CM SSI:
Up to 30 Vdc
CS analog:
Protected
CM analog:
Protected
CM SSI:
Protected
CS:
Vdc to Gnd
CM:
Vdc to Gnd
CM SSI:
Vdc to Gnd
CS/CM analog:
10 kΩ
CM SSI:
Min. 100 Ω termination
Operating temperature:
-40 °C (-40 °F)
to +75°C (+167 °F), higher temperatures
possible, contact MTS.
Relative humidity:
90%, no condensation
with housing
temperature coefficient:
CS:
Voltage ≤ 20 microns/°C
CM:
Voltage ≤ 20 microns/°C
CM SSI:
≤ 20 microns/°C
CM:
Contact factory
CS:
Contact factory
5 g (single hit)
1 g, 10-150 Hz/ IEC standard 68-2-6
P1 Core Sensors:
JST PHR-4 (Analog) or JST
PHR-6 (SSI) socket female (24 AWG) crimp
pin, JST 04KR-6 or JST 06KR-6 (26 AWG)
insulation displacement (pigtails available on
custom basis)
H-style housing:
pigtail cable, 3 (analog) or 6
(SSI) conductors, 24 AWG, 1 meter long
M-style housing:
M12 5-pin (analog) or 8-pin
(SSI) connector
update rate:
Linearity
deviation:
Repeatability:
Hysteresis:
analog outputs:
Digital outputs:
Length m:
Baud rate:
<
400 m
eMI:
Shock rating:
Vibration
rating:
WIRING
Connection
types:
<400 kBd <300 kBd <200 kBd <100 kBd
Zero setpoint
tolerance:
Stroke lengths
in mm:
Core Sensors and Core Sensors in H and
M-style housings:
± 1 mm
Core Sensors:
73.3, 109.5, 148.0, 162.3,
186.3, 194.3, 217.3 and 250.1
Core Sensors in H and M housings:
72.3,
109.5, 148.0, 162.3, 186.3, 194.3, 217.3 and
250.1
C-Series Models CS and CM Temposonics
®
Linear-Position Sensors - Analog & SSI Outputs
Product Data Sheet, Part No.: 551020, Revision L 02/12, 03/12
2
MTS Sensors
C-Series Core Sensor Models CS/CM
Outputs and Dimension References
Product specifications
Parameters
CORe SeNSORS
electronic
head:
Sealing:
Sensor tube:
Mounting:
Glass filled plastic
IP50/IP40
Nylon, sealed tip
User determined, provisions for two M3
screws, 37 mm or longer (knock out of
plastic seal barriers required)
401842 ring, 400424 ring, 252012 ring,
253572 ring, 201611 float, 201656 float
2002/95/EG RoHS
Stamped 316L (1.4404) stainless steel cover
and flange
IP67 o-ring seals inside on core head - two
places, gasket for flange
304L (1.4306) stainless steel pipe and plug
Two bolts or screws, 180°, X holes.
401842 ring, 400424 ring, 252012 ring,
253572 ring, 201611 float, 201656 float
Machined 303 (1.4305) stainless steel Hex
body and cover
IP69K (when connected to mating cable)
250 bar (3600 psi), 325 bar max (4700 psi)
304L (1.4306) stainless steel, 316 (1.4404)
plug, laser welded
M14 x 1.5 threads with 11.3 x 2.2 mm NBR
o-ring
45 Nm (33 foot-pounds)
Standard ring magnet part no.: 401842
Optional ring magnet part no.: 254012
Optional ring magnet part no.: 400424
Large ring magnet part no.: 253572
Std. magnet float part no.: 201611
Std. slim magnet float part no.: 201656
Specifications
MeCHaNICaL PaCKaGING
Magnet types:
Hazardous
substance
compliance:
H StyLe HOuSING
electronic
head:
Sealing:
Sensor tube:
Mounting:
Magnet types:
M HOuSING
electronic
head:
Sealing:
Operating
pressure:
Sensor tube:
Mounting:
typical mount-
ing torque:
Magnet types:
MTS Sensors
3
C-Series Models CS and CM Temposonics
®
Linear-Position Sensors - Analog & SSI Outputs
Product Data Sheet, Part No.: 551020, Revision L 02/12, 3/12
C-Series Core Sensor, Models CS/CM
Mounting, Wiring and Connections, accessory Options
Sensor outputs
C-Series Core sensors are available in standard analog and SSI (Synchronous Serial Interface) outputs. Analog output is + ≈ 0 to 5 Vdc in both
CS and CM models. In the CS, the output is ratiometric with the supply voltage. In the CM, the 12 volt supply allows the sensor to generate a
reference 5 volts for the circuit so the output is not ratiometric with the supply voltage.
Synchronous Serial Interface (SSI)
Temposonics C-Series model CM core sensors with SSI output offer
clocked serial data transfer. The displacement value is encoded in a
24-bit binary or gray code format and transmitted at high speed via
SSI interface in RS-422 or RS-485 standard to the control device.
The synchronous serial interface is the most widely used output
between sensors and controllers.
A clock pulse train from a controller is used to gate out sensor data.
One bit of position data is transmitted to the controller for each clock
pulse received by the sensor
(see ‘Figures 1 and 2’).
The absolute
position data is continually updated by the sensor and converted by
the shift register into serial information.
Pause interval min. 16 µs
Clock (+)
Data (+)
Parity
MSB
LSB
Between each clock pulse train there is a minimum dwell of 25 µs
during which fresh data is moved into the register. Data is shifted
out when the sensor receives a pulse train from the controller.
When the least significant bit (LSB) goes high and the minimum
dwell time has elapsed, new data is available to read.
Parity Bit explanation:
Bit 25 is the parity bit. The parity bit is set to no parity (always 0) as
standard and even parity on request. Even parity means for the data
output it contains an even number of bits which contain a logic 1
(high level), including the parity bit
(see ‘Figure 1’)
Example:
If the 24 bit number is 2345 decimal then this is 100100101001
binary. By counting the number of 1s we yield 5. The parity bit will
be set to a 1 because of the even parity.
error detection
Figure 1.
Timing diagram
SENSOR
Clock (+)
ASIC for absolute position data
Microprocessor system
position value = 24-bit
Binary or Gray code
Shift register
Parallel serial converter
CONTROLLER
With the parity bit and the intelligent sensor electronic sufficient
error detection should be possible. The detection will cover the
following failure modes:
error detected
Parity bit doesn’t match
All data bits are logic 0
All data bits are logic 0
Parity bit doesn’t match. All
data bits are high
Possible cause
Data signal is corrupted
No magnet detected
Data output shorted to
ground or open
Data output shorted to
power supply
Receiver
Data (+)
Clock (-)
Driver
Data (-)
+24 Vdc
0 Vdc
Figure 2.
Logic diagram
The first high-low transition of the clock load the actual position
information and the parity bit into the output register. The first
low-high transition transmits the parity bit to the data output. The
second low high transition transmits the MSB of the actual position
information to the data output. At each subsequent low-high
transition the next highest bit is transmitted to the data output.
When the least significant bit is received by the controller the pulse
train is terminated. After a pause interval, the data output returns
to logic 1.
Input and output are standard RS-422/RS485 differential signal
levels.
Contact MTS applications engineering for synchronous operation as
an option for timing critical applications.
C-Series Models CS and CM Temposonics
®
Linear-Position Sensors - Analog & SSI Outputs
Product Data Sheet, Part No.: 551020, Revision L 02/12, 03/12
4
MTS Sensors
C-Series Core Sensor, Models CS/CM
Dimension References
Models CS/CM Sensor Dimension References
the C-Series core sensor is available in two models, CS and CM and are intended for embedded applications in OEM products. The C-Series
model CS is designed for general purpose applications and requires a 5 Vdc power supply. The C-Series model CM is designed specifically
for mobile equipment applications and provides additional protection from over voltage and reverse connection and supports a 12 Vdc power
supply. The C-Series core sensor can be ordered with a housing option for applications that require additional protection. Due to the plastic
housing, core sensors require consideration of protection from external magnetic fields when installed in OEM products.
MODeL CS/CM CORe SeNSOR
Notes:
1.
2.
Stroke lengths are calculated from the side of the magnet facing the sensor's head.
Dimensions for models CS and CM are the same. Both models have plastic breakaway seals that must be removed from the mounting holes (shown
in 'Figure 3') before use.
Drawing is for reference only, contact applications engineering for tolerance specific information.
Breakaway seals
36 mm
(1.42 in.)
16.7 mm ±1 mm
(0.66 in. ±0.04 in.)
Beginning of stroke
Null
Stroke length
End of stroke
Dead zone
23.7 mm
±1 mm
(0.93 in.
±0.04 in.)
4 mm
(0.16 in.) dia.
23 mm
(0.91 in.) dia.
0.7 mm
(.028 in.)
Offset
2.2 mm (0.09 in.)
1.8 mm (0.07 in.)
Magnet,
part no. 401842
16 mm
(0.63 in.) C
L
Figure 3.
C-Series Core sensor, Models CS/CM dimension references
MODeL CS/CM CORe SeNSOR WItH IP67 H2 HOuSING OPtION
Drawing is for reference only, contact applications engineering for tolerance specific information.
The H2 housing option completely encloses and seals the C-Series sensor to IP67 ratings. It's made of 304L stainless steel and is available
with a cable out only. The cover is locked in place with tabs. However, the cover can be removed by bending the tabs outward. 0-rings seal
the outside environment on the inside diameter and on the C-Series null zone face. This H2 housing is easy to mount via the two holes on the
flange. Two gasket types are available to seal the flange upon installation. The pressure rating of the flange to the tip of the sensor is 300 psi
(24 Bar). This sensor can be used with magnets or magnet equipped floats. A retaining clip groove is located in the end of the pipe to secure
the available floats from falling off during installation or low fluid conditions in liquid level applications.
Beginning of stroke
Null
46.5 mm
(1.83 in.)
15.2 mm
±1 mm
Stroke length
End of stroke
Dead zone
30.5 mm
±1 mm
(0.59 in.
±0.04 in.
)
(1.20 in.
±0.04 mm
)
50 mm
(1.96 in.)
25 mm
(0.98 in.) dia.
Standard magnet,
part no. 401842
4.8 mm
(0.188 in.) dia.
4.5 mm
(0.17 in.) dia.
60 mm
(2.36 in.)
61 mm
(2.4 in.)
25 mm
(0.98 in.) dia.
Figure 4.
C-Series Core sensor, Models CS/CM (with IP67 H2 housing option) dimension references
MTS Sensors
5
C-Series Models CS and CM Temposonics
®
Linear-Position Sensors - Analog & SSI Outputs
Product Data Sheet, Part No.: 551020, Revision L 02/12, 3/12
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