550°C RTD Probes

CUT-TO-LENGTH Leads: 2 or 3 leadwires, AWG 22, stranded copper withmica/glass insulation. For 2-lead RTDs add 0.04 Ω per foot ofcombined case and lead length to element tolerance.

Overview

Time constant: 10 seconds typical in moving water. Install these probes in steam lines, exhaust gases, or whereveryou need precise readings of elevated temperatures. RTD probes feature high temperature ceramic elements, assembled into stainless steel cases in a configuration that provides long- term reliable service.Models S80 and S81 can be shortened by the user. You canstock standard lengths and cut them to the size required with an ordinary tubing cutter.Bayonet-style probes have a lockcap and spring for spring-loaded installation. See page 4-9 for more information on bayonet fittings.•0.250" diameter cut-to-length RTDs •0.188" diameter straight and bayonet RTDs Insulation resistance: 10 megohms min. at 100 VDC, leads to case. Model numbers:Straight probe: Ø 0.188" (4.8 mm)Bayonet probe: Ø 0.188" (4.8 mm)Cut-to-length: Ø 0.250" (6.4 mm) Element Model Platinum (0.00391 TCR)100 Ω ±0.1% at 0°C S71PB Platinum (0.00385 TCR)*100 Ω ±0.1% at 0°C S72PD Element Model

Specifications

Platinum (0.00391 TCR)100 Ω ±0.1% at 0°C S73PB Platinum (0.00385 TCR)*100 Ω ±0.1% at 0°C S74PD Temperature range: -100 to 550°C (-148 to 1022°F). Leadwires: 500°C (932°F) max. Case: 316 stainless steel.Minimum case length:0.250" diameter:S80, S81: 4.0" (101.6 mm). 0.188" diameter: S71, S72: 2.0" (50.8 mm)S73, S74: 3.0" (76.2 mm).Maximum case length: 48" (1220 mm), longer on special order. Element Model Platinum (0.00391 TCR)100 Ω ±0.1% at 0°C S80PB Platinum (0.00385 TCR)*100 Ω ±0.1% at 0°C S81PD
*Meets EN60751, Class B Pressure rating: 1500 psi (103 bar). Vibration: Withstands 10 to 2000 Hz at 20 G’s minimum perMIL-STD-202, Method 204, Test Condition D.

Specification and order options

S74PD Model number from table Shock: Withstands 100 G’s minimum sine wave shock of 8 milliseconds duration. 145 Case length: Specify in 0.1" increments (Ex: 145 = 14.5 inches) Z Number of leads: Y = 2 leadsZ = 3 leads 6 Lead length in inches S74PD145Z6 = Sample part number
Specifications subject to change Page 3-10

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