Omega's line of Ultra-Precise RTD temperature sensors provide customers with a product that offers sensor accuracies that are far tighter than are available in most standard RTD
sensors on the market today. These sensors are manufactured using DIN Platinum RTD elements (temperature coefficient = .00385 ohm/ohm/°C) with Class A, Class 1/3DIN
or Class 1/10DIN accuracies. This makes Omega's Ultra-Precise RTDs among the most accurate industrial temperature sensors available.
These sensors are available in two styles: Type P-M style closed ended immersion sensors for use where the sensors will be immersed in a fluid. Type P-L style exposed element sensors for use in direct contact with air or gasses for more accurate measurement of these substances.
There are four probe diameters available including 3mm, 6mm, 1/8" and 1/4", with lengths starting at 50mm (2") with a number of standard
lengths available (see ordering table below). A variety of mounting threads are available including: 6x1mm, 8x1mm, 10x1mm, 1/8NPT, 1/4NPT, 3/8NPT
and 1/2NPT (Note: 6mm mounting threads are not available on 6mm diameter probes). Please note that 1/8" and 3mm diameter probes
without threaded fittings and with "-P", "-PS", "-TS", "-GS" and "-S" cables include a transition fitting at the end of the sheath to accommodate the cable diameter.
If a transition fitting is not acceptable, then a type "-T" or "-G" cable must be specified.
Please note that the minimum recommended length for 1/10DIN accuracy probes is 6” for 1/4" (150mm for 6mm) diameter probes, and 4” for
1/8” (100mm for 3mm) diameter probes. This is due to the fact that in order to achieve these accuracies all stem conduction effects in the sensor
must be eliminated. Also, please note that in order to lab certify 1/10DIN accuracy RTDs, it may be necessary for the probes to be longer than
these lengths depending on the test equipment used to perform the certification. Omega can make these products shorter than the recommended
lengths, but we cannot guarantee their performance. For 1/3DIN probes, a minimum length of 4.75" applies for 1/4" (120mm for 6mm) probes and
2.38" for 1/8" (60mm for 3mm) diameter probes.
The ultimate temperature range of the sensor is dependent upon both the element accuracy and cable selection as shown below (the tightest temperature range applies):
Temperature Range Examples:
P-M-A-1/8-6-0-T-3 has a Class A Element = -100 to 450°C, and "T" (PFA) Cable = -100 to 250°C, resulting in
a sensor temperature range of -100 TO 250°C.
P-M-1/10-1/4-9-1/2-P-3 has a 1/10DIN Element = 0 to 100°C, and a P (PVC) Cable = -29 to 100°C, resulting in a sensor
temperature range of 0 to 100°C.
Accuracy Specifications: Class A= ±(0.15 + 0.002 |t| )°C From -100 to 450°C Class 1/3DIN = ±1/3 (0.3 + 0.005 |t| )°C From -50 to 250°C Class 1/10DIN = ±1/10 (0.3 + 0.005 |t| )°C From 0 to 100°C
PVC Insulated ("P") and PVC Insulated and Shielded ("PS") Cables -29 to 100°C.
PFA Insulated ("T") and PFA Insulated and Shielded ("TS) Cables: -100 to 250°C.
Fiberglass Insulated ("G") and Fiberglass Insulated and Overbraided ("GS") Cables: -73 to 400°C.
Silicone Insulated ("S") Cables: -50 to 200°C.
Your Ultra-Precise RTD sensor can be combined with a wide variety of equipment and accessories to construct an entire measurement
and control system. Select from a wide variety of controllers, panel meters, transmitters, recorders and data loggers to monitor, control and record your process. See the
links below to view a sampling of our complimentary products, or call our Customer Service Representatives and Application Engineers for assistance in selecting the right
products for your needs.
† All amounts shown in USD Note: For longer sheath length, change "-6" in model to desired length in inches and add $1 per inch to price when longer than 8". For Silicone Rubber insulated cable, change "-P", "-T" or "-G" to "-S" in the model number and use PFA pricing. For longer cable lengths, change "-3" to desired length in feet and add $0.40/ft for PVC, $0.95/ft for PFA or Silicone Rubber and $1.50/ft for fiberglass. For shielding on PVC, PFA or Fiberglass insulated cables, change "P", "T" or "G" to "PS", "TS" or "GS" and add $0.25 per foot to the price. Mounting threads also available in 1/4 NPT, 3/8 NPT and 1/2 NPT at the same price. 1/8" diameter sensors without threaded fittings and with "P", "PS", "TS", "GS" and "S" cables include a transition fitting at the end of the sheath. For metric diameter probes multiply price/ft adders by 3.28 and round to the nearest $0.10. Ordering Example: (1) P-M-1/10-1/4-6-0-P-3 100 Ohm, 1/10 DIN Platinum RTD with a 1/4, $99.00
Part Number Builder
Build Your Part Number Below
Probe Type select from: M for Closed Ended Immersion Style L for Open Ended Air/Gas Direct Exposure Style
Sensor Accuracy select from: A for Class A 1/3 for Class 1/3DIN 1/10 for Class 1/10DIN
Probe Diameter select from: 1/8 for 1/8 inch Diameter 1/4 for 1/4 inch Diameter M30 for 3mm Diameter M60 for 6mm Diameter (Not valid with M6 Mounting Thread)
Probe Length select from: 6 for 6 inches Long 9 for 9 inches Long 12 for 12 inches Long 18 for 18 inches Long 24 for 24 inches Long 150 for 150mm Long 225 for 225mm Long 300 for 300mm Long 450 for 450mm Long 600 for 600mm Long
Mounting Thread select from: 0 for No Mounting Thread 1/8 for 1/8NPT Thread 1/4 for 1/4NPT Thread 3/8 for 3/8NPT Thread 1/2 for 1/2NPT Thread M6 for 6x1mm Thread M8 for 8x1mm Thread M10 for 10x1mm Thread
Cable Construction select from: P for PVC Insulated & Jacketed (100°C Max) T for PFA Insulated & Jacketed (250°C Max) G for Fiberglass Insulated & Jacketed (400°C Max) S for Silicone Rubber Insulated and Jacketed (200°C max) PS for PVC Insulated & Jacketed with Shield (100°C Max) TS for PFA Insulated & Jacketed w/Shield (250°C Max) GS for Fiberglass Insulated & Jacketed w/SST Overbraid (400°C Max)
Cable Length select from: 3 for 3 Foot Standard (Standard Dimensions) 1 for 1 meter Standard (Metric Dimensions)
Note: All combinations may not be valid, check spec sheet for valid part numbers.