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.
Our RTD sensors with M12 connections provide for easy and efficient installation or removal of these sensors for preriodic calibration,
troubleshooting or replacement. Gone are the days of having to pull extension cables from cable trays, or disconnect the probe leads
from screw terminals in a connection head, in order to calibrate or replace the sensor. Now you simply disconnect the sensor from the
extension cable saving cost and downtime. The M12 connector also provides two other important features, the keyed connector eliminates
the potential for mis-wiring during installation, and the elimination of screw terminals results in a more robust connection that will not loosen
when exposed to heating and cooling cycles
The Series PR-26SL Spring Loaded RTD has been designed to provide our customers with a simple, effective way to adapt our M12 enabled RTD
probes for use in thermowells. To insure the best possible performance, the PR-26SL RTD has a spring loading feature that maintains contact between
the probe and thermowell under static and vibration conditions. This helps to maintain good heat transfer between the thermowell and probe, as well as dampening the effect of vibration on the sensor. With a demonstrated ability to withstand 10gs of vibration between 10 and 500HZ (for 6" long and shorter probes per MIL-STD-202G,
Method 204D, Test Condition A), this probe has shown its ability to withstand real-world conditions.
To select the right length probe for your application, simply measure the depth of the bore in the thermowell (the length from the top of the thermowell to the bottom
of the bore as shown as the "Thermowell Stem Length" in the sketch below).
The PR-26SL sensor assembly is designed to fit into a thermowell with a stem length equal to that specified in the model number. Simply
slide the sensor assembly into the thermowell until bottomed and then compress the spring while making the 1/2NPT connection. Thread sealant tape or
thread compound may be used on the 1/2NPT mounting thread to insure easy removal at a later time. The position of the self-gripping spring can also be
adjusted so that the sensor can be used in a shorter thermowell, simply twist the spring while sliding it along the probe stem until the needed position is reached.
The PR-26SL can also be used as a back-up sensor for a variety of applications. The spring loading feature can be adjusted to fit a variety
of thermowells. The spring loading fitting can be removed altogether and replaced with a compression type fitting if a fixed mounting is needed.
The probe (less spring and hex fitting) can also be used with one of Omega's M12-Handle accessories to turn your spring loaded probe into a hand-held
probe. This flexibility in mounting options, as well as the simplified and robust connection provided by the M12 connector, makes the PR-26SL the perfect solution
for a wide variety of applications.
These RTD sensors can be used in any 2, 3 or 4-wire application by selecting one of the two available wiring
arrangements (see the wiring diagrams below) and using only those wires needed for your connection. This allows for
simplified, trouble free installation with any existing application. This also allows the PR-26SL series sensor to be used
for a wide variety of replacement applications since it can be connected as-is with just about any measurement or
control equipment available.
Standard Probe Diameter: 1/4"
Standard Probe Lengths: See Thermowell Stem Lengths in The Order Table Below.
Sensor: Pt100 (100 Ohms at 0°C, .00385 TCR (alpha)) Standard, Pt1000 and Other Options Available.
Accuracy: Class A Standard (per IEC 60751), Others Available Upon Request.
Temperature Range: -50 to 500°C Except for the Connector Which is 250°C Max.
Insulation Resistance: 100 Megohms Minimum at 100VDC at Room Ambient Temperature.
Vibration Resistance: 10gs from 10-500Hz per MIL-STD-202G, Method 204D, Test Condition A.
注: * Class A Accuracy = ±(0.15 + 0.002*t)°C where “t” = temperature in °C regardless of sign. For the alternate wiring arrangement, change “-1” to “-2” in the model number, no additional cost. For a probe length not listed up to 24", change the stem length in the model number to the required stem length (Example: 1250 = 12½") and use the price of the next longer sensor. Ordering Example: (1) PR-26SL-3-100-A-0250-M12-1 Spring Loaded Pt100 Class A RTD with M12 Connector for Use in Thermowells with a Stem Length of 2.50 inches, ¥36,545 plus (1) PR-26SL-3-100-A-0600-M12-1 Spring Loaded Pt100 Class A RTD with M12 Connector for Use in Thermowells with a Stem Length of 6 inches, ¥38,200, ¥36,545 + 38,200 = ¥74,745
Probe Resistance : 100 : 100 ohms at 0C 1000 : 1000 ohms at 0C
Accuracy : A : Class A per IEC60751 B : Class B per IEC60751