DATA SHEET R-STR-LOW
_
_
  • Platinum Surface RTD
  • Wide temperature range
  • Non-penetrating
  • Low-cost installation
  • Sensor sealed for condensing
    or wet environments
  • Stable: drift is less than ±0.05°C
    over 5 years
  • Permanently bonded assemblies
    _ metal contact plate under sensor
    _ high-performance bonded fiber insulation over sensor
  • Mount by bonding (22391),
    bolt (22392) or strap (22393)
 _
_ _

Wide Operating Temperature Range
–200°C to +232°C (–320°F to +450°F)
continuous as mounted.
260°C (500°F) short term clamped.
Sensing Element
International grade thin film platinum a = 0.00385 Ω/Ω/°C or
Industrial grade thin film platinum a = 0.00375 Ω/Ω/°C
Ice Point Resistance
100±0.12Ω or 1000±1.2Ω;
Class B (±0.12%)
Interchangeability
±0.3°C or 0.6% of temperature IEC 751
Class B above –50°C
Long Term Stability
Less than 0.05°C drift per 5 years above –50°C
Time Constant
Less than 1/2 second for the sensor
to reach 63.2% of a change in temperature

Self-Heating
The bare sensor will rise less than 1°C
while dissipating 25 milliwatts mounted.

Insulation Resistance
The insulation resistance between outer sensor insulation
clamped between two metal plates and the common leadwire is:
50 megohms minimum with 50 Volts DC applied.
Maximum Current
100Ω=5mA, 1000Ω=2mA
for limited self heating
Recommended Current
1mA
Body Materials
Stainless Steel and flexible
polyimide fiber insulation
Lead Materials
Stranded copper cable
insulated as follows:
22 AWG tin-plated, (2-wire) FEP Teflon® over each twisted black/red, FEP overall.
24 AWG tin-plated, (3-wire) FEP Teflon® over each twisted white/2 red, FEP overall
26 AWG nickel-plated, PFA Teflon®, 2 white, 2 white/brown,
or 2 white/2 red fused parallel

Teflon® is a registered trademark of Dupont

 

 
_ _ _ _ _ _ _ _ _ _ _ _ _ _
_
  22391   Strapon® for adhesive or tape mounting
  22392   Strapon® for bolt down with 3/16, #8 or 4.5mm
  22393   Strapon® for curved surface >2" dia. with pipe clamp, can bolt down		 _
  _
    Resistance Specification @ 0°C
    T01    100Ω ± 0.12Ω@ 0°C, (a = 0.00385Ω/Ω/°C Int’l Grade IEC 751 Class B)
    T10    1000Ω ± 1.2Ω@ 0°C, (a = 0.00385Ω/Ω/°C Int’l Grade IEC 751 Class B)
    H10    1000Ω ± 1.2Ω@ 0°C, (a = .00375Ω/Ω/°C Industrial Grade Class B)		 _
  _
      Number of Leads:
      A       2 wire
      B       3 wire
      C       4 wire		 _
  _
    Lead Length in inches (12 inches standard) _
  _
   Pipe Clamp – 22393 Only _
0
1
2
3
4
5
 No Clamp
Pipe Dia. 2" to 8" (standard)
Pipe Dia. 8" to 10"
Pipe Dia. 10" to 16"
Pipe Dia. 16" to 24"
Pipe Dia. 24" to 36"
_
_ _
_
22391
_
_
-
T01
_
_
-
B
_
_
-
12
_
_
-
1
_
_
- Typical write-up for 22391
 
RdF Corporation • 23 Elm Ave., Hudson, NH 03051-0490  
800.445.8367 • 603.882.5195 • fax 603.882.6925 • www.rdfcorp.com