DATA SHEET R-STRWR
_
_ _
  • Wire-wound platinum surface RTD
  • Wide Temperature range –270°C to 260°C
  • Non-penetrating
  • Low-cost installation
  • Sensor sealed for condensing or wet environments
  • Adhesive-less mounting
  • High-performance bonded fiber insulation over sensor
  • Mount by bolt (22488) or strap (22489)
_ _

Operating Temperature Range
–270°C to +260°C (–452°F to +500°F)
Continuous as mounted (300°C short term)
Sensing Element
The standard sensing element is platinum wire with a resistance of 100 Ω at 0°C with a temperature coefficient of 0.00385Ω/Ω/°C nominal (IEC751) or 0.00391Ω/Ω/°C reference grade
Accuracy
Standard (–1, –3) ± 0.50 Ω or 0.50% of temperature,
whichever is greater
Optional (–2, –4) ± 0.22 Ω or 0.25% of temperature,
whichever is greater
Time Response
<200 milliseconds lag on metal surfaces
Stability
The sensor will have less than 0.02°C drift per year at rated service temperature with proper mounting

Self-Heating
The bare sensor will rise less than 1°C
while dissipating power of 25mW
(ASTM-E-644)
Insulation Resistance
The insulation resistance between outer sensor insulation clamped between two metal plates and the common lead wire is 50 megohms minimum with 50 VDC applied to a dry sensor at room temperature (ASTM-E-644)
Mounting
Will conform to 2 inch minimum diameter (see ordering data)
Body Materials
Stainless steel and flexible polyimide fiber insulation
Lead Materials
#26 AWG stranded nickel-plated copper conductors,
PFA Teflon® insulated 3 or 4 conductor ribbon cable

Teflon® is a registered trademark of Dupont

 

 
   22488   Strapon® for bolt down with 3/16, #8 or 4.5 mm
   22489   Strapon® for curved surface >2" minimum dia. with pipe clamp (see ordering data)
 
  RESISTANCE SPECIFICATION @ 0°C
     1     100 ± 0.50Ω @0°C, a = 0.00391 Reference grade platinum
     2     100 ± 0.22W @0°C, a = 0.00391 Reference grade platinum
     3     100 ± 0.50Ω @0°C, a = 0.00385 (IEC 751) International Grade Platinum
     4     100 ± 0.22Ω @0°C, a = 0.00385 (IEC 751) International Grade Platinum
 
  NUMBER OF LEADS
     A     3 Wire
     B     4 Wire
 
  PIPE CLAMP - 22489 ONLY
     1     Pipe diameter 2" to 8" (standard)
     2     Pipe diameter 8" to 10"
     3     Pipe diameter 10" to 16"
     4     Pipe diameter 16" to 24"
     5     Pipe diameter 24" to 36"
 
 
_
_
22489
_
_
–
1
_
_
–
A
_
_
–
1
_
_
–  Typical write-up for 22489 _
 
RdF Corporation • 23 Elm Ave., Hudson, NH 03051-0490  
800.445.8367 • 603.882.5195 • fax 603.882.6925 • www.rdfcorp.com