Skip to search Skip to main content Skip to navigation

Need assistance? Call us: 1-800-663-4209
  1. Home
  2. See Temperature
  3. See RTDs
  4. See RTD Sanitary Probes
  5. Protection Head RTD Probes with Class A Accuracy 3-A Sanitary
We noticed you are in , please visit your local site by clicking the below link for regional offers and support.
Stay here.
Go to the site >
Protection Head RTD Probes with Class A Accuracy 3-A Sanitary
Click and hold to zoom

PRS-3-100

Protection Head RTD Probes with Class A Accuracy 3-A Sanitary

  • 3-A Approved Design, Along with ASME-BPE-2007 Flange Geometry, Insures Trouble-Free Cleanability and Interchangeability
  • Can Be Used in Sanitary, Hygienic and Clean-In-Place Food, Dairy, Beverage and BioPharmaceutical Processes
  • Wetted Surfaces are 316L Stainless Steel, Surface Finish = 32 Microinch or Better
  • Standard Duty ¼' (0.250') Diameter or
PRS-3-100
From €  215,13
Shop Models
3 Variations available
See all series options below
PRS-3-100Data Sheet

Data Sheet
Protection Head RTD Probes with Class A Accuracy 3-A Sanitary PRS-3-100 PRS-3-100
Product Overview
  • Accuracy Class A
  • Accuracy Detail Class A per IEC60751
  • Electrical Connection Screw Terminal
  • Number of Wires 4
  • Process Connection Type Tri-Clamp
  • Process Temperature, Max 200 °C
  • Process Temperature, Min -50 °C
  • Series ID PRS-3-100
  • Sheath Material 316L Stainless Steel
  • Temperature Sensor Type RTD

Supported Applications

The Omega PRS series consists of sanitary RTD assemblies with protection heads, designed for use in Clean-In-Place (CIP) and sanitary processes. These sensors are supplied standard with 1½" 16 AMP Tri-Grip™ fittings to assemble to like-style piping connections.

Operating Conditions & Performance

The series features Pt100 elements meeting IEC-60751 Class A requirements. The documented operating temperature range is -50 to 200°C (-58 to 392°F). Accuracy specifications include a tolerance of ± (0.15 + 0.002t) °C and resistance values of 100 Ω at 0°C with Class A accuracy.

Wetted surfaces utilize 316L Stainless Steel with a surface finish of 32 µin or better. The electrical connection is provided via a White Polypropylene housing (NB9W style) featuring a ¾" NPT cable connection, though optional configurations exist for different head materials.

Configuration Options

The PRS-3-100 series offers configurable dimensions and construction options to accommodate specific sanitary installation needs. Available variants include:

  • Duty Configurations: Standard Duty (PRS-S-NB9W Series) with ¼" sheath diameter, or Heavy-Duty (PRS-H-NB9W Series) with ⅜" sheath diameter.
  • Probe Lengths: Options include 3", 4", 5", and 6" lengths as listed in the ordering tables.
  • Protection Heads: Standard White Polypropylene (NB9W) or optional large 316 SS heads (change suffix to -NB15).
  • Sensor Elements: 4-wire Pt100 RTD elements are standard.

The Heavy-Duty series includes a stepped stem design with a ⅜" diameter stepping down to ⅛" at the tip and a 1¼" stem length. The Standard Duty series utilizes a uniform sheath profile.

Key Product Differences

Differences between configurations are defined by duty class, probe geometry, and protection head material:

  • Standard Duty (PRS-S): Features a ¼" diameter sheath. Model numbers follow the pattern PRS-3-100-A-S-[Length]-[Element Code]-NB9W.
  • Heavy-Duty (PRS-H): Features a ⅜" diameter stepped stem with a 1¼" length section at the tip. Model numbers follow the pattern PRS-3-100-A-H-[Length]-[Element Code]-NB9W.
  • Housing Material: The standard NB9W suffix denotes a White Polypropylene screw cap protection head with ¾ NPT conduit connection. Changing the suffix to -NB15 specifies an optional large 316 SS screw top cap protection head for additional cost.
en-US
en_NL
Save Configuration