Page 1
Precision Thermistor Sensors
For Laboratory Applications
ON-400 Series
U For Use in Laboratory
or Other High-Accuracy
Applications
U Rugged Construction
Can Be Used for
Short-Term Water and
Soil Readings
U Available with a
Resistance of 2252 Ω
at 25°C (Thermistor
Curve #44004)
U 3 m (10’) PVC Insulated
Cable and Phone Plug
Connector Standard
U Max Temperature
100°C (212°F)
Dimensions: mm (in)
ON-401-PP shown actual size.
25.4 (1)
To Order
Resistance Interchangeability Temperature Cable Cable
Model No. @ 25°C @ 0 to 70°C Rating Length Termination
ON-401-PP 2252 Ω ±0.1°C 100°C (212°F) 3 m (10') Phone plug
Notes: For additional cable length, add required length (in inches) to end of the model number for an additional cost per foot.
Ordering Example: ON-401-PP, vinyl coated thermistor sensor, 2252 Ω resistance at 25°C, ±0.1°C interchangeability from 0 to 70°C
(32 to 158°F), supplied with 3 m (10') of PVC insulated and jacketed cable with a phone plug connector standard.
Dimensions: mm (in)
3.6 (0.1406) Dia.
ON-401-PP-V shown actual size.
7.9
(0.3125)
max
6.4 (
max
1
)
⁄
4
Resistance Interchangeability Temperature Cable Cable
Model No. @ 25°C @ 0 to 70°C Rating Length Termination
ON-401-PP-V 2252 Ω ±0.1°C 100°C (212°F) 3 m (10') Phone plug
Notes: For additional cable length, add required length (in inches) to end of the model number for an additional cost per foot.
Ordering Example: ON-401-PP-V, soft flexible vinyl tipped thermistor sensor, 2252 Ω resistance at 25°C, ±0.1°C interchangeability from
0 to 70°C (32 to 158°F), supplied with 3 m (10') of PVC insulated and jacketed cable with a phone plug connector standard.
1
6.4 (
)
⁄
4
Dimensions: mm (in)
ON-402-PP shown actual size.
2.4 (
3
⁄
32
) dia.
dia.
3.2 (
1
⁄
) dia.
8
Resistance Interchangeability Temperature Cable Cable
Model No. @ 25°C @ 0 to 70°C Rating Length Termination
ON-402-PP 2252 Ω ±0.1°C 100°C (212°F) 3 m (10') Phone plug
Ordering Example: ON-402-PP, vinyl tipped thermistor sensor, 2252 Ω resistance at 25°C, ±0.1°C interchangeability from 0 to 70°C
(32 to 158°F), supplied with 3 m (10') of PVC insulated and jacketed cable with a phone plug connector standard.
D-23
Page 2
Tubular Thermistor Sensors
For Immersion Temperature Measurements
32
(11⁄4)
27
(11⁄8)
1
6.3 (
⁄4)
diameter
Dimensions: mm (inch)
114 (41⁄2)
3.2 (1⁄8)
diameter
ON-403-PP
shown actual size.
ON-403-PP
U 300 Series Stainless Steel
Probe for Rugged-Duty
Liquid Immersion Use
U Probe is Immersible
to End of Transition
U Provided with 3 m (10')
of PVC Cable and Phone
Plug Connector
To Order
Resistance Interchangeability Cable
Model Number @ 25°C @ 0 to 70°C Termination
ON-403-PP 2252 Ω @ 25°C ±0.1°C Phone plug
Notes: For additional cable length, add required length (in inches) to end of the model number for an additional cost.
Ordering Examples: ON-403-PP, tubular stainless steel immersion thermistor sensor, 2252 Ω at 25°C, interchangeability is ±0.1°C,
3 m (10') of PVC insulated and jacketed cable and phone plug connector.
ON-403-PP-240, tubular stainless steel immersion thermistor sensor, 2252 Ω at 25°C, interchangeability is ±0.1°C, 6 m (20') of PVC insulated
and jacketed cable with phone plug.
Accessories
Model Number Description
450-ATH Handheld thermometer, thermistor input
HH41 Handheld thermistor thermometer
HH42 Handheld thermistor thermometer with RS232 communications
SSLK-14-18
1
⁄4" tube OD, 1⁄8 NPT, 316 SS compression fitting
D-19
Page 3
Tubular Glass Thermistor Sensors
For Immersion Temperature Measurements
Stainless steel transition
fitting.
127 (5)
ON-404-PP
shown actual size.
Dimensions: mm (inch)
3
4.8 (
⁄
16
diameter
)
U Chemically Inert for Liquid Immersion Use
U Can Be Used for Thermal Titration
ON-404-PP
Studies and Measurement of
Freezing Points
U 127 mm (5") L Pyrex Probe and
3 m (10') of PVC Cable Insulated and
Jacketed Cable with Phone Plug
Connector Standard
To Order
Resistance Interchangeability Cable
Model No. @ 25°C @ 0 to 70°C Termination
ON-404-PP 2252 Ω ±0.1°C Phone plug
Accessories
Model No. Description
450-ATH Handheld thermometer, thermistor input
HH41 Handheld thermistor thermometer
HH42 Handheld thermistor thermometer with RS232 communications
Ordering Example: ON-404-PP, tubular glass immersion thermistor sensor, 2252 Ω at 25°C, interchangeability of ±0.1°C, 3 m (10’) of PVC
insulated and jacketed cable and phone plug connector.
D-25
Page 4
Precision Thermistor Sensor
For Air Temperature Measurements
3 m (10') L vinyl
insulated, shielded, vinyl
jacketed cable included.
ON‑405 and 406 supplied with
300 mm (12") of cable
and phone plug.
Dimensions: mm (inch)
13 (1⁄2)
32 (11⁄4)
5
⁄8)
16 (
ON-905-44004
shown smaller
than actual size.
300 Series
Stainless Steel
Housing
13
(1⁄2)
Dimensions: mm (inch)
32 (11⁄4)
13 (1⁄2)
ON-906-44004
shown smaller
than actual size.
16 (5⁄8)
Plastic Housing
for High Humidity
Applications
13
(1⁄2)
U Ideal for Measuring
U Available in
5 Resistance Curves
U Thermistors are Epoxy
Coated and Extend Into
the Airflow
U Maximum Temperature
100°C (212°F)
ON-905 and ON-906 Series
Air Temperatures
in Laboratories and
Laminar Flow Systems
U Metal or Plastic Cage
Provides Protection for
Thermistor Sensor While
Leaving it Open to the
Air Flow
To Order
Model Resistance Interchangeability Maximum Cable Cable
Number @ 25°C @ 0 to 70°C Temperature Length Termination
ON-405-PP 2252 Ω ±0.1°C 100°C (212°F) 3 m (10') Phone plug
ON-406-PP 2252 Ω ±0.1°C 100°C (212°F) 3 m (10') Phone plug
ON-905-44004 2252 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-905-44005 3000 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-905-44007 5000 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-905-44006 10000 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-905-44008 30000Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-906-44004 2252 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-906-44005 3000 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-906-44007 5000 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-906-44006 10000 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
ON-906-44008 30000 Ω ±0.2°C 100°C (212°F) 300 mm (12") Stripped
Notes: For additional cable length, add required length (in inches) to end of the model number for an additional cost. For a phone plug, add
“-PP” to the model number for an additional cost. For tighter interchangeability, substitute the thermistor part number from the table below for
an additional cost to the sensor price.
Ordering Examples: ON-905-44004-36-PP, air temperature sensor with a steel cage and a resistance of 2252 Ω at 25°C, interchangeability of
±0.2°C, 36” of cable and a phone plug connector.
ON-905-44034-36-PP, air temperature thermistor sensor with steel cage and a resistance of 5000 Ω at 25°C, interchangeability of ±0.1°C,
36" of cable and a phone plug connector.
Optional Thermistors
Resistance Maximum Storage and Working
Model @ 25°C Working Interchangeability Temp for Best
Number (Ω) Temperature @ 0 to 70°C Stability
44033 2252 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
44030 3000 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
44034 5000 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
44031 10,000 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
44032 30,000 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
D
D-26
Page 5
“Banjo” Style Thermistor Sensor
Dimensions: mm (inch)
ON-408-PP shown
actual size.
)
5
⁄
Strain relief spring.
32
(1
8
92.7 (3
)
1
⁄
2
17 gage extension.
10.3 (
x 2 (
13
5
⁄
64
) dia.
⁄
32
) thick
Shown actual size.
ON-408-PP
U 300 Series Stainless
Steel, Hermitically
Sealed Unit
U Extremely Sensitive
Sensor with Thin CrossSection Tip Combined
and Ultra-Small Diameter
U Measures Water Baths,
and Air and Surface
Temperatures
U 3 m (10') PVC Insulated
and Jacketed Cable with
Phone Plug Connector
Standard
Extension Sheath
To Order
Resistance Interchangeability Maximum Cable Cable
Model No. @ 25°C @ 0 to 70°C Temperature Length Termination
ON-408-PP 2252 Ω ±0.1°C 100°C (212°F) 3 m (10') Phone plug
Accessories
Model No. Description
450-ATH Handheld thermometer, thermistor input
865F Thermistor meter; in 0.1°F resolution mode, -70.0 to 40.1°F, -40.0 to 199.9°F
DP25-TH-A Thermistor input meter/controller with analog output
HH41 Handheld thermistor thermometer
Ordering Example: ON-408-PP, “banjo” style thermistor sensor, 2252 Ω at 25°C, interchangeability of ±0. 1°C, 3 m (10') of cable with a phone
plug connector.
D-37
Page 6
Precision Thermistor Sensor
For Surface Temperature Measurements
13 (1⁄2)
ON-909 Series
ON-409-PP
supplied with
3 m (10') of
cable and
phone plug.
ON-909-44004
shown actual size.
Dimensions:
mm (inch)
U Epoxy Encapsulated
Thermistor Contained
in Stamped, 300 Series
SS Housing
U Construction Provides
Maximum Surface Contact
U 26 AWG Stranded PFA
Insulated and Jacketed
Cable (See Table
for Length)
Min
U Ideally Suited for
Applications Such as
Determining Heat Loss,
Compressor Efficiency
and Measuring Manifold
or Bearing Temperature
U Max Temperature
100°C (212°F)
0.44"
Dia.
Sensor
Diameter
(See Table
Below)
D
To Order
Model Resistance Interchangeability Max Tip Diameter Cable Cable
Number @ 25°C @ 0 to 70°C Temp (inch) Length Termination
ON-409-PP 2252 Ω ±0.1°C 100°C (212°F) 0.44" 3 m (10') Phone plug
ON-909-44004 2252 Ω ±0.2°C 100°C (212°F) 0.38" 300 mm (12") Stripped
ON-909-44005 3000 Ω ±0.2°C 100°C (212°F) 0.38" 300 mm (12") Stripped
ON-909-44007 5000 Ω ± 0.2°C 100°C (212°F) 0.38" 300 mm (12") Stripped
ON-909-44006 10000 Ω ±0.2°C 100°C (212°F) 0.38" 300 mm (12") Stripped
ON-909-44008 30000 Ω ±0.2°C 100°C (212°F) 0.38" 300 mm (12") Stripped
ON-909-44004-40 2252 Ω ±0.2°C 100°C (212°F) 0.38" 1 m (40") Stripped
ON-909-44005-40 3000 Ω ± 0.2°C 100°C (212°F) 0.38" 1 m (40") Stripped
ON-909-44007-40 5000 Ω ± 0.2°C 100°C (212°F) 0.38" 1 m (40") Stripped
ON-909-44006-40 10000 Ω ±0.2°C 100°C (212°F) 0.38" 1 m (40") Stripped
ON-909-44008-40 30000 Ω ±0.2°C 100°C (212°F) 0.38" 1 m (40") Stripped
Notes: For additional cable length, add required length (in inches) to end of the model number for additional cost. For a phone plug, add “-PP”
to the model number for additional cost. For tighter interchangeability, substitute the thermistor part number from the table below and add the
price listed to the sensor price.
Ordering Examples: ON-909-44004-40-PP, surface thermistor sensor with a resistance of 2252 Ω at 25°C and an interchangeability of ±0.2°C,
1 m (40") of cable and a phone plug connector.
ON-909-44032-40-PP, surface thermistor sensor with a resistance of 30000 Ω at 25°C and an interchangeability of ±0.1°C, 1 m (40") of cable
and a phone plug connector.
Optional Thermistors
Resistance Maximum Storage and Working
Model @ 25°C Working Interchangeability Temp for Best
Number (Ω) Temp @ 0 to 70°C Stability
44033 2252 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
44030 3000 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
44034 5000 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
44031 10,000 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
44032 30,000 75°C (165°F) ±0.1°C -80 to 75°C (-110 to 165°F)
D-20
Page 7
Tubular Thermistor Sensors
For Immersion Temperature Measurements
Dimensions: mm (in)
14.287
(9⁄16)
1
⁄8 NPT
114
(4.50)
1
3.2 (
⁄8) diameter
ON-410-PP
shown actual size.
D
ON-410-PP
U Threaded Fitting
Provides 1⁄8 NPT Thread
for Installation in Pipes
or Closed Vessels
U Can Be Used in
Liquid Immersion and
Pressurized Applications
U Available in 5 Resistance
Values To Fit Your
Instrumentation Needs
U Maximum Temperature
100°C (212°F)
U 3 m (10') PVC Insulated
and Jacketed Cable with
Phone Plug Standard
To Order
Model Resistance Interchangeability Maximum Cable Cable
Number @ 25°C @ 0 to 70°C Temperature Length Termination
ON-410-PP 2252 Ω ±0.1°C 100°C (212°F) 3 m (10') Phone plug
Notes: For additional cable length, add required length (in inches) to end of the model number for an additional cost.
Ordering Example: ON-410-PP, tubular immersion sensor, 2252 Ω resistance at 25°C, ±0.10°C interchangeability from 0 to 70°C
(32 to 158°F), supplied with 3 m (10') of PVC insulated and jacketed cable with a phone plug connector standard.
Accessories
Model Number Description
CN1501-TH-1 Controller with 240 Vac power
DP25-TH Precision panel meter/controller
450-ATH Handheld thermometer, thermistor input
HH41 Handheld thermistor thermometer
HH42 Handheld thermistor thermometer with RS232 communications
HH83 Thermometer/data logger
5831 Benchtop thermometer
OM-SQ2010 Data logger
D-34
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