NTC thermistors for
temperature measurement
Probe assemblies, pipe mounted sensors
Series/Type:
Date:
B58100
February 2009
© EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Temperature measurement
Probe assemblies
B58100
T120
Applications
Pipe mounted sensor for temperature
measurement of fluids in pipes
Features
Short response time due to
glass-encapsulated NTC thermistor
Fast and easy mounting
Options
Available for pipes with diameter 13.5, 15,
18, 19 and 22 mm
Alternative resistance ratings available on
request
Alternative fast-on plug terminals 2.8 x 0.5 or
4.8 x 0.8 mm available
Delivery mode
Bulk
General technical data
Climatic category
Maximum power
Resistance tolerance
Rated temperature
Thermal time constant
Insulation resistance
Dissipation factor
Test voltage
(IEC 60068-1)
(at 25
°C)
Dimensional drawing
Dimensions in mm
P
25
∆R
R
/R
R
T
R
(measured on pipe)
τ
a
(V = 100 V DC, t = 1 s) R
ins
(in air)
δ
th
(t = 1 min)
V
test
5/100/21
18
±3
60
<5
> 10
approx. 2.1
500
mW
%
°C
s
MΩ
mW/K
V AC
Electrical specification and ordering codes
R
60
Ω
3000
3000
3000
2500
2500
2500
2500
R
25
Ω
10110
10110
10110
10151
10151
10151
10151
No. of
B
25/100
R/T characteristic
K
8407
3497
8407
3497
8407
3497
8317
4005
±1%
8317
4005
±1%
8317
4005
±1%
8317
4005
±1%
B
0/100
K
3450
±1%
3450
±1%
3450
±1%
3970
3970
3970
3970
for pipe
diameter
mm
18/19
13.5
22
22
15
13.5
18/19
Ordering code
B58100A0506A000
B58100A0527A000
B58100A0531A000
B58100A0439A000
B58100A0507A000
B58100A0628A000
B58100A0629A000
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 9
Temperature measurement
Probe assemblies
B58100
T120
Cautions and warnings General
See "Important notes" at the end of this document.
Storage
Store thermistors only in original packaging. Do not open the package prior to storage.
Storage conditions in original packaging: storage temperature 25
°C
... +45
°C,
relative
humidity
≤75%
annual mean, <95% maximum 30 days per annum, dew precipitation is
inadmissible.
Do not store thermistors where they are exposed to heat or direct sunlight. Otherwise, the
packing material may be deformed or components may stick together, causing problems during
mounting.
Avoid contamination of thermistor surface during storage, handling and processing.
Avoid storage of thermistors in harmful environments like corrosive gases (SO
x
, Cl etc).
Use the components as soon as possible after opening the factory seals, i.e. the
polyvinyl-sealed packages.
Solder thermistors within the time specified after shipment from EPCOS.
For leaded components this is 24 months, for SMDs 12 months.
Handling
NTC thermistors must not be dropped. Chip-offs or any other damage must not be caused
during handling of NTCs.
Do not touch components with bare hands. Gloves are recommended.
Avoid contamination of thermistor surface during handling.
Bending / twisting leads
A lead (wire) may be bent at a minimum distance of twice the wire’s diameter plus 4 mm from
the component head or housing. When bending ensure the wire is mechanically relieved at the
component head or housing. The bending radius should be at least 0.75 mm.
Twisting (torsion) by 180° of a lead bent by 90° is permissible at 6 mm from the bottom of the
thermistor body.
Soldering
Use resin-type flux or non-activated flux.
Insufficient preheating may cause ceramic cracks.
Rapid cooling by dipping in solvent is not recommended.
Complete removal of flux is recommended.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 9
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