Note: These Sensors Require an M12 Extension Cable to Connect the Sensor To Your
Instrumentation. A Partial List Of Our M12 Extension Cables is Included in the Ordering Table Below.
Sanitary Temperature Sensor Specifications Include:
3A Approved 316L stainless steel wetted surfaces with surface finishes of 32 microinches or better.
Mounting flanges are 16AMP style conforming to ASME-BPE-2007 for proper fit with CIP systems.
Probe designs include a 1/4" diameter standard duty and a stepped 3/16 to 3/8" heavy duty design.
Standard probe lengths of 3, 4, 5 or 6" available from stock, other lengths available
as special orders.
Sensor is a 4-wire, 100 ohm, Class A, Platinum Pt100 RTD meeting
the requirements of IEC 60751.
Connection is a 4-pin M12 plug style connector.
These sensors can be used with 2-wire, 3-wire or 4-wire systems see information below.
Insulation resistance: 100 megohms minimum at 100 VDC.
Thermal response time of less than 2.5 seconds in water flowing
at 3 ft/sec (63% response).
The 3-A Approved OMEGA® PRS-S-M12 and PRS-H-M12 Series
RTD Sensors are designed for use in Sanitary or Hygienic
Clean-in-Place applications in the Food, Dairy, Beverage and BioPharmaceutical
industries. These temperature sensors are manufactured with 316L stainless steel
housings that meet the dimensional and finish requirements of 3-A Standard 74-05 and ASME
BPE-2007, and are welded and processed to provide a clean,
smooth, 32 microinch or better surface finish in the wetted areas for
The probe stems are manufactured in two configurations; with a standard ¼" diameter probe for standard duty service,
and a stepped 3/8" to 3/16" diameter probe design for good response times in heavy duty applications.
In addition to the standard 1½-16AMP process connection, these can be provided
in the following sizes and styles:
Model Number Code
1" and 1½"-16AMP
If you need a process connection that is not listed above, please contact our sales department for availability.
A 4-Pin M12 Connector provides a quick and
convenient connection point for process wiring. Omega offers a full line of M12 extension and patch cables in a variety of cable materials, lengths and connector configurations.
These sanitary RTD sensors are supplied standard as 4-wire assemblies with
4-pin connectors. When used in 3-wire applications,
use pins A, B and C as shown in the wiring detail below. When used in 2-wire systems, connect one wire to pins A or B and the second wire to pins C or D as shown below.
This M12 connector style sensor is also available with a Thermistor sensing element in order to accommodate a wide variety of input requirements.
Order By Part Number
† All dollar amounts on this site are shown in US currency. Note:
For other than the standard 1½-16AMP process connection, change "-D1-" in the model number to the code for the alternate process connection option listed above the "To Order" table and add $20 to the price
For standard duty probe lengths longer than 6", change "-0600" in model number to the required length (example: 12" = "-1200", 9¼" = "-0925") and add $1 per inch to the price (up to 24 inches).
For heavy duty probe lengths longer than 6", change "-0600" in model number to the required length (example: 12" = "-1200", 9¼" = "-0925") and add $2.50 per inch to the price (up to 24 inches).
For lengths over 24 inches, please consult sales.
Ordering Example: (1) PRS-3-100-A-S-0400-D1-M12 PT100 Sanitary Sensor (100Ω, Class A accuracy) with ¼" diameter by 4" long standard duty probe, 1½", 16AMP cap and 4-Pin M12 connector, $121.00
Part Number Builder
Build Your Part Number Below
Nominal Element Resistance select from: 100 for 100 ohm @ 0 C (standard) 1000 for 1 kohm @ 0 C
Accuracy select from: A for Class A Accuracy
Probe Diameter select from: S for Standard Duty 1/4 inch H for Heavy Duty 3/8 to 3/16 inch stepped probe
Probe Length select from: 0300 for 3 inch length 0400 for 4 inch length 0500 for 5 inch length 0600 for 6 inch length
Sanitary Flange (Cap) Size select from: D1 for 1-1/2 inch Tri-Grip Flange (standard) B1 for 3/4 inch 16AMP Tri-Grip Flange E1 for 2 inch 16AMP Tri-Grip Flange F1 for 2-1/2 inch 16AMP Tri-Grip Flange G1 for 3 inch 16AMP Tri-Grip Flange H1 for 4 inch 16AMP Tri-Grip Flange
NOTE: All combinations may not be valid, check spec sheet for valid part numbers.