RTDs / Miniature RTDs / Moisture Resistant & Immersible

MOISTURE RESISTANT MINI RTD PROBES

29231, 29232, 29233, 29234, 29235, 29326, 29348, 29363

Part no: 29231, 29232, 29233, 29234, 29235, 29326

Ready to use platinum RTD Capsules have insulated lead wires welded and anchored internally. No splicing to fragile elements is required. This construction assures reliable rugged emdedment, insertion or probe assembly. Fit in precision diameters from 0.086 to 0.187 inches. Standard sensors and encapsulation materials rated to 540°C(1000°F). Choose the moisture resistant versions for condensing conditions.

Perfomance Specifications

   
 

Operating Temperature Range
Moisture resistant: -50°C to 200°C(-60°F to 390°F)

Sensing Element
International grade thin film platinum,
α = 0.00385 Ω/Ω/°C per IEC 751

Ice Point Resistance
100±0.12Ω or 1000Ω±1.2Ω; International Class B: (±0.12%)

Time Constant(Water at 3ft/second)
0.098 Diamter =0.6 seconds
0.125 Diameter=0.8 seconds
0.187 Diamter =1.5 seconds

Self Heating
Greater than 15 mw/°C

Interchangeability
±(0.3°C @ 0°C + 0.005|t|°C), IEC 751 Class B above -50°C

Insulation Resistance
Greater than 50 Megohms at 50 VDC at 25°C

     

Long Term Stability
Better than 0.05°C (0.02% of resistance) per 5 years,
-50°C to 300°C, 0.25°C per year to 540°C

Maximum Current
100Ω=5 mA, 1000Ω=2 mA for limited self-heating
Also suitable as self-heated sensors

Recommended Current
1 mA maximum for temperature sensing

Moisture Seal
Items are moisture resistant.
Consult factory with questions.

Case Material
Alumina on 0.187 & 0.125
Polyimide (350°C) on 0.098 dia.

Lead Materials
Nickel-coated copper-insulated as follows:
22/28 AWG TFE Teflon® rated to 260°C(500°F)
for 0.187/0.125 and 0.098 diameter
   

Teflon® is a registered trademark of the DuPont Corporation.

Ordering Specifications

   29233     < 0.098" dia x 0.6" long Polymide w/28 AWG Teflon® leads, 200°C(390°F) - Moisture Resistant
   29234     < 0.125" dia x 0.6" long alumina w/28 AWG Teflon® leads, 200°C(390°F), 300 PSI Seal - Moisture Resistant
   29235     < 0.187" dia x 0.6" long alumina w/22 AWG Teflon® leads, 200°C(390°F), 300 PSI Seal - Moisture Resistant
 
     RESISTANCE SPECIFICATION @ 0°C
     T01      100Ω ± 0.12Ω   (α = 0.00385 Ω/Ω/°C)
     T05      500Ω ± 0.60Ω   (α = 0.00385 Ω/Ω/°C), (29235 only)
     T10      1000Ω ± 1.20Ω   (α= 0.00385 Ω/Ω/°C)
     A01      100Ω ± 0.06Ω   (α= 0.00385 Ω/Ω/°C),(29231,29232,29234,29326 only)
     A10      1000Ω ± 0.60Ω   (α= 0.00385 Ω/Ω/°C),(29231,29232,29234,29326 only)
 
      NUMBER OF LEADS:
      A      2 wires
      B      3 wires
      C      4 wires
 
   LEAD LENGTH in inches (12 inches standard)
29231
–
T01
–
A
–
12
–  Typical write-up for 29231
29232
–
A01
–
C
–
12
–  Typical write-up for 29232

Part no: 29348, 29363

Small:
Small size fits tight places
Fast:
Low Mass means quick respons
Accurate:
 Platinum Sensor offers greatest stability
Wide Range:
Accurate temperature measurement from -200°C to 510°C
Durable:
Lead wires are welded and anchored

To satisfy the demand for smaller components, RDF has introduced ultra-small diameter RTD Capsules with a super fast response time. These ready to use platinum RTD Micro-Capsules have two insulated lead wires welded and anchored internally. This Construction assures reliable rugged embedment, insertion or probe assembly. Precision diameter are 0.066” max. stainless steel and 0.086” max. alumina.

Choose a moisture rated version for condensing conditions. Model 29348 will also withstand shallow immersion.

*Note PN 29326 referenced under Dimensional Drawings is not moisture resistant.

Dimensional Drawings

Performance Specifications

   
 

Temperature Range
Teflon® leads: -50°C to 200°C (-60°F to 390°F),
Kepton® leads: -200°C to 350°C(-320°F to 660°F)
Fiberglass leads: -75°C to 510°C(-100°F to 950°F)

Sensing Element
International grade IEC 751 thin film platinum,
α=0.00385 Ω/Ω/°C

Ice Point Resistance
100±0.12 or 1000±1.2;
International class B:(±0.12%)

Time Constant (Water at 3ft/second)
0.066 Diameter = 0.4 seconds
0.086 Diameter = 0.6 seconds

Self-Heating
> 15mW/°C

Interchangeability
±(0.3°C + 0.005|t|°C),
IEC 751 Class B, above -50°C

Long Term Stability
Better than 0.05°C (0.02% of resistance) per 5 years.
-60°C to 300 °C, 0.25°C per year to 510°C

Insulation Resistance
>50 Megohms at 50VDC at 25&Deg;C

 

Maximum Current
100 = 5mA, 1000 = 2mA for limited self heating
also suitable as self-heated sensors

Recommended Current
1 mA maximum for temperature sensing

Pressure Seal
Moisture proof model 29348 withstands 300psi

Case Material
316 stainless steel on 0.066" diameter
Alumina on 0.086" diameter

Lead Materials
Stranded or solid copper, plated, imsulated and temperature rated as folows:

  • 34 AWG stranded, silver plated, PTFE Teflon®,
    white, 200°C(390°F) for 0.066 diameter
  • 30 AWG stranded, silver plated, PTFE Teflon®,
    white, 200°C(390°F) for 0.086 diameter

   

Teflon® is a registered trademark of the DuPont Corporation.

Ordering Specifications

   29348    Moisture Proof, < 0.066" diameter x 0.6" long SST with individual 34 AWG PTFE Teflon® leads, 200°C (390°F)
   29363    Moisture Resistant <0.086" diameter x 0.6" long alumina,individual 30 AWG PTFE Teflon® leads, 200°C (390°F)
 
     RESISTANCE SPECIFICATION @ 0°C
     T01   100 Ω ±0.12 Ω (α = 0.00385 Ω/Ω/°C International Grade IEC 751 Class B)
     T10   1000 Ω ±1.2 Ω (α = 0.00385 Ω/Ω/°C International Grade IEC 751 Class B)
 
      LEAD LENGTH in inches (12" std)
 
 
29348
–
T10
–
12
– Typical write-up for 29348
29363
–
T01
–
60
– Typical write-up for 29363

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Moisture-Proof Insertion Capsule Platinum RTD (0.066" dia.) (RdF Model 29348)
from $165.00

Moisture-proof platinum RTD Capsules deliver stable, accurate temperature measurement in wet environments up to 300psi. Precision ultra-small diameter and low mass result in a super fast response time. Leads are welded and anchored to the element, adding durability.