field disappears, the reeds separate and disconnect
(switch off).
SE0201_TRS • 3/27/2017
2
Perm
Saturation ma
1500
1000
500
0
TC＝90
TC＝60
TC＝30
TC＝150
2000
1000
0
TC＝120
Sensors – TRS™ Series Thermal Reed Switch
0
20
40
60
80
100
120
140
160
0
20
40
60
80
100
120
140
160
Temperature ℃）
（
Temperature ℃）
（
Structures and Principles of Operation cont’d
Reed Switch Structure
Structure of reed switch
• The reed switch is a contact switch comprised of a
comprised of a
alloy
◆
Reed switch is contact switch
pair of Fe-Ni
pair of
reeds encased in a glass
Fe-Ni
with inactive gas.
in glass tube
are switched
tube
alloy reeds encased
The reeds
on or off by the magnetic
with inactive gas. The reeds are switched on
coil.
field of a permanent magnet or magnet
or off
by magnetic field of permanent magnet or magnet
• The reeds in the glass tube become magnetized from the magnetic field,
coil.
allowing the two reeds
◆
Long lifetime,
and connect (switch on). When
to make contact
High environmental resistance
because of protected contact by glass encasing.
the magnetic field disappears, the reeds separate and disconnect (switch
◆
Reeds in glass tube become magnetized with
off).
magnetic field, and then two reeds contact and
• The glass encasement of
connect each other (switch on). And then magnetic
the reeds ensures high environmental
field disappears,
resistance and a long operational life.
the reeds separate and disconnect
(switch off).
Encasing
Glass tube
TC=Curie temperature
Inactive gas
Contact
Fe-Ni alloy reed
N
S
N
S
S
N
TRS principle : Break (B) type
TRS principle: Break (B) type
Reset ：Reed switch
Action temperature
（
■
：Permanent magnet ■
：Thermorite
®
■temperature contact area ）
Reset temperature
Action temperature
TRS principle : Break (B) type
（
■
：Permanent magnet ■
：Thermorite
®
■
：Reed switch contact area ）
Low temperature
Low temperature
Thermal magnet = paramagnet
Thermal magnet = paramagnet
High temperature
High temperature
Thermal magnet = NO magnetic
Thermal magnet = NO magnetic
NEC TOKIN Sensors Vol.14 5
N
N
S
S
N
N
S
S
N
N
S
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
S
N
S
N S
N S
N
●Please request for a specification sheet for detailed product data prior to the purchase.
N
N S
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●All specifications productcatalog catalog, please read "Precautions" are subjectsafety precautions listed in Priorprinted version catalog. contact NEC TOKIN for updated product data.
●Before using the in this in this and production status of products and other to change without notice. the to the purchase, please
External magnetic field
Sensors – TRS™ Series Thermal Reed Switch
TRS/OHD installation direction in external magnetic field
External magnetic field
Magnetic field from equipment
External Magnetic Field
Magnetic field emitting equipment
such as motors, coils
TRS/OHD installation
in external
external magnetic field
TRS installation
direction in
magnetic field
Magnetic field from equipment
Wrong direction Correct direction
N
N
S
Magnetic field emitting equipment
such as motors, coils
Wrong direction Correct direction
N
N
S
N
N
S
S
S
S
Magnet inside TRS is
parallel to the external field
→ Greater Influence
N
S
Magnet inside TRS is
perpendicular to the external field
→ Less influence
N
S
Magnet inside TRS is
parallel to the external field
→ Greater Influence
Magnet inside TRS is
perpendicular to the external field
→ Less influence
Ferromagnetic material influence
3
Ferromagnetic material influence
Operation temperature variation
(°C)
2
Ferromagnetic material influence
1
0
－1
－2
－3
－4
－5
Operation temperature variation
(°C)
3
2
1
0
－1
－2
0
－3
－4
－5
0
2
4
2
4
6
8
10
12
Gap distance_d
（mm）
14
16
BType
MType
TRS
BType
MType
d
Soft iron (thickness 3.3mm)
Note; Above figures are for reference only and are not guarantee
d values.
d
TRS
TM
Before Using Thermal Reed Switch (TRS
figures are for
)
reference only and are not guarantee
d values.
Environmental Compliance
Note; Above
• Please ask for a copy of specification and check the contents thoroughly before the actual use.
• Please
TRS sensors are
deciding your specifications.
All
contact us before
RoHS compliant.
• Do not use in close proximity to strongly magnetized parts.
TM
Before
if dropped or
Reed Switch (TRS
)
• Do not use
Using Thermal
strongly shocked.
• Please with greater of specifi specified.
• Do NOT useask for a copyload thancation and check the contents thoroughly before the actual use.
W h•ePlease lcontact se swi tchedeciding iyour one to cations.ng surge vol tage ( i nducti ve l oad) or rush current
n i nsta l i ng theus before s i n ci rcu ts pr specifiproduci
•
RoHS Compliant
proximity to strongly magnetized parts.
Do not use in close
(in lamps and motors), an appropriate switch type should be used, or a contact point protection circuit added.
• d s ress ( es if dropped i o strongly of addi ti
• A voiDotnot usepeci al l y torsorn) i n case shocked.onal processi ng.
• reed switch has specifi load than specified.
• EachDo NOT use withagreaterc resonance frequency. Please contact us when an oscillation is added.
W hen i nstal l i ng these swi tches i n ci rcui ts prone to produci ng surge vol tage ( i nducti ve l oad) or rush current
(in lamps and motors), an appropriate switch type should be used, or a contact point protection circuit added.
• A voi d stress ( especi al l y torsi on) i n case of addi ti onal processi ng.
NEC TOKIN Sensors Vol.14
7
• Each reed switch has a specific resonance frequency. Please contact us when an oscillation is added.
6
8
10
12
Gap distance_d
（mm）
14
16
Soft iron (thickness 3.3mm)
cifications in this catalog and production status of pr
o
request for a specification sheet for detailed product
d
using the product in this catalog, please read "Precau
t
ducts are subject to change without notice. Prior to the purch
a
ata prior to the purchase
.
ions" and other safety precautions listed in the printed versi
o
NEC TOKIN Sensors Vol.14
7
se, please contact NEC TOKIN for updated product .data
n catalog
.
All specifications in this catalog and production status of pr
o
Please request for a specification sheet for detailed product
d
Before using the product in this catalog, please read "Precau
The STM32F series chip says that its IO can be configured as 2M/10M/50M output. I wonder if the code execution speed is also 2M/10M/50M when configured as output? What I mean is, if the previous state...
I am going to use the tim5 of STM8S903K3 to generate PWM, but I find that I cannot write into the register (there is no problem in compiling, but when debugging, I find that the instructions to write ...
The largest fire in an armory: In 295 AD, a fire broke out in the Luoyang armory, and all the equipment for 200,000 troops was burned. The largest fire in a temple: In February 534 AD, a fire broke ou...
When developing a Bluetooth driver under XIDE of BlueLab3.6.2, the malloc() function can only apply for a maximum of 128KB of space each time. This is very inconvenient to use, especially when transmi...
[color=#333333][font=arial, 宋体, sans-serif, tahoma,]Two half-bridge pressure sensors form a full-bridge sensor. I want to know how to connect them. I checked and some sellers said that black and black...
Most of the houses we live in now are elevator buildings, mainly because it is more convenient to go up and down the stairs! It can also make life more comfortable. It even helps to increase the ad...[Details]
A parallel inverter consists of two thyristors (T1 and T2), a capacitor, a center-tapped transformer, and an inductor. The thyristors provide a current path, while the inductor L maintains a consta...[Details]
As the number of cars increases, environmental pressures are also increasing. At this time, some people are saying that new energy vehicles are energy-efficient and environmentally friendly, and ar...[Details]
In recent years, many people have switched to new energy vehicles, and this type of vehicle has indeed been highly sought after and is considered the future direction of automobile development, and...[Details]
The mass production process of the new generation of cockpit platform has started, and the smart cockpit market has entered a new bonus cycle of technology iteration and platform upgrade.
...[Details]
On August 25th, TSMC, the world's leading contract chip manufacturer, attracted significant attention for its decision to build a chip manufacturing facility in Arizona. TSMC primarily manufactures...[Details]
Logic analyzers are widely used tools in digital design verification and debugging. They can verify the proper functioning of digital circuits and help users identify and troubleshoot faults. They ...[Details]
Definition of interactive projection system:
Interactive projection systems, also known as multimedia interactive projection, are available in floor, wall, and tabletop interactive projection....[Details]
According to foreign media reports, secondary battery materials company POSCO Future M announced that it has successfully developed two experimental (prototype) positive electrode materials for the...[Details]
On August 22, according to the Ministry of Industry and Information Technology's official website, my country's first mandatory national standard for the control of hazardous substances in electric...[Details]
This paper proposes a temperature real-time transmission and display solution based on LED optical data transmission, with Jingwei Yager low-power FPGA HR (Yellow River) series as the main controll...[Details]
Tires are a very important component for cars. They are related to the driving experience of the vehicle. We are almost inseparable from cars in our daily lives. For tires, according to the role of...[Details]
Permanent magnets are essential components in a wide range of household and industrial devices. They are particularly crucial in the renewable energy sector, including electric vehicle motors. Curr...[Details]
Coal mines typically contain gas and coal dust. When gas and coal dust reach a certain concentration, they can cause explosions. Electrical equipment generates arcs during normal operation or durin...[Details]
Recently, Joyson Electronics has made positive progress in the core technology research and development of the robot's "brain and brain" and key components, and launched the industry's first integr...[Details]
Electronics Design Contest
京公网安备 11010802033920号
EEWORLD
