T2 Transformer Temperature Probe
Description
- Surpass ASTM D2413 and D149
- -80 to 200°C range
- Continuous slit (Patent Pending) allows perfect oil flow into jacket
- No gage factor or calibration
- Solvent and chemical resistant
- Accuracy of ± 1°C
A fiber optic temperature sensor specifically designed for oil filled and dry-type transformers
DOWNLOAD THE PDF DATASHEET
of the T2 transformer probe
The T2™ probe is a robust, oil-permeable fiber optic temperature sensor for use inside oil-filled power transformers. It is specifically designed to withstand initial manufacturing conditions, including kerosene desorption and heat runs, as well as long-term oil immersion and vibration. The probes can be embedded in a standard spacer or attached directly onto any other location inside power transformer windings.
The T2™ probe consists of a 400-micron O.D. solid-state sensitive element bonded to an optical fiber. This fiber is covered with a 1.06 mm O.D. oil-permeable protective PTFE Teflon sheath. The entire probe is protected by a 3.1 mm O.D. PTFE “spiral wrap” reinforcement. Only chemically resistant and low dielectric constant materials are used for these temperature probes.
The protective sheathing over the fiber optical temperature probe features a single continuous slit along the entire length of the tube wall (patent pending), which allows perfect impregnation of transformer dielectric oil into the inner section of the probe assembly. Competitive products use numerous diagonal slits, which degrade the sheath’s ability to protect the fiber during transformer manufacturing.
Since the sensitive element of the Neoptix T2™ temperature probe is completely enclosed in the tip of the Teflon sheath (Patent Pending), there is no risk of this element becoming detached during manipulation and installation. There is no external bonding, which creates a protuberance of adhesive around the sensitive element that can allow force to detach the optically sensitive part. The optical cable is bonded onto the protective sheath near the sensitive element with high-temperature epoxy and fluoroplymers (patent pending).
Neoptix T2™ temperature probes comply with ASTM D2413 and D149 standards. It is also delivered with a temporary Teflon protective cap over the ST connector to prevent dirt to become in contact with the connector during assembly and heat runs.
The T2™ temperature range is -80ºC to +200ºC. All T2™ optical temperature probes are available in custom lengths from 1 to 25 meters. The T2™ is compatible with all Neoptix instruments and accessories such as extension cables and optical tank wall feedthroughs.
As all Neoptix probes, the T2™ does not require any recalibration or complex «gage factor» input to operate. The small optical fiber diameter allows very sharp bending radius.
Neoptix T2™ optical temperature sensors perfectly mate with all of our signal conditioners including the handheld Nomad™, our T/Guard™ and T/Guard+™ systems as well as our Reflex™ and OmniFlex ™ fiber optic signal conditioners. The sensor is delivered with a NIST traceable Calibration Certificate and standard length probes are covered by our “48 Hours Turn-around Guarantee”.
Specifications
| Model: | T2™ Fiber Optic Temperature Sensor |
|---|---|
| Temperature range: | -80 to 200 ºC |
| Resolution: | 0.1 ºC |
| Long term accuracy: | ±0.8 ºC or 1 % FS |
| Response time: | < 500 milliseconds |
| Probe length: | Any length up to 25 meters by 1 meter increment |
| Maximum probe length: | 25 meters |
| Connector type: | ST |
| Probe internal material: | Chemically resistant, inert and dielectric material; |
| Probe sheathing material: | Oil permeable optical cable sheath and supplementary spiral wrap reinforcement made out of PTFE Teflon™ |
| Probe dimensions: | 1.06 mm O.D. for the first 3 cm; 3.10 mm O.D. spiral wrap protection afterwards |
| Probe sensitive area: | Direct point measurement with a sensitive area of 400 microns O.D. |
| Probe permeability: | Longitudinal continuous slit (patent pending) on cable insures perfect oil impregnation into the sheath |
| Certifications: | ASTM-D 149 and ASTM-D 2413 |
| Probe compatibility: | Compatible with all Neoptix signal conditioners; Also compatible with previous version of Nortech-Fibronic, Inc. systems with recalibration (see note 1) |
| Ordering codes: | "T2S" + Number of meters + Uncovered length at tip (in cm) + Bonded spiral wrap (0 = free to move; 1 = Bonded)
|
Note 1 : Neoptix fiber optic temperature probes are compatible with most former Nortech-Fibronic, Inc. signal conditioners. However, these older systems may need a Neoptix factory recalibration. Please, contact us for more details.
Literature/images
DATASHEET
- T2™ Fiber Optic Probe for Transformer Datasheet
Format: PDF - File size: 500 KB
IMAGES
Accessories
No accessories are available for the T2 model fiber optic temperature probe
