Neoptix - Field Proven Fiber Optic Temperature Sensors

• Description
• Specifications
• Literature/Images
• Accessories

Description

The Neoptix is a small form factor and cost oriented fiber optic hot spot monitoring system specifically designed for small and midsize dry type and oil-filled power transformers

DOWNLOAD THE PDF DATASHEET
of the T/Guard Link System

The The Neoptix™ T/Guard™ Link is a cost-oriented multi-channel fiber optic temperature monitoring system for dry-type or oil-filled power transformer hot spot measurements. The T/Guard Link has a small footprint and has been developed with long-term performance and stability in mind. This fiber-optic temperature monitoring system for smal and medium size power transformers is accurate, rugged and designed for the long-term life of the transformer.

Coupled with the T/Guard Link system, the Neoptix™ T2™ fiber-optic temperature probe provides accurate and direct temperature monitoring of transformer windings. This solution provides a realistic, real-time view of winding conditions that is quicker and more accurate than top oil thermocouple measurements, and greatly complements indirect measurements based on thermal models.

Neoptix™ T/Guard Link gives the exact temperature of optical probes in 200 milliseconds per channel. Peak load or emergency overloads are thus detected almost instantaneously. With Neoptix technology, you have a new tool to optimize high-voltage transformer performance and life expectancy.

The T/Guard Link system is specifically designed to meet power transformer industry requirements: extended intervals between servicing, low maintenance, rugged components and the ability to withstand the harshest conditions. All components have been specifically selected for long term performance, including the light source that has an MTBF superior (>300 years of use) to the expected life of the transformer. Moreover, compared to other technologies available on the market, like fluorescent decay, our sensor does not fade or drift over time. This allows a constant and absolute temperature measurement of your transformer windings over the lifespan of the equipment. The Neoptix system is based on the proven GaAs semiconductor technology and incorporates an original algorithm to analyze the signal, providing repeatable and reproducible measurements.

Our fiber-optic probes are made only with dielectric materials and are designed to withstand initial manufacturing conditions. The probes can withstand kerosene desorption and heat runs, as well as long term oil immersion and vibration. Moreover, the Neoptix™ temperature probes are interchangeable and no calibration or inconvenient gage factors are required when interfacing sensors.

The T/Guard system is easy to interface to an existing marshaling or substation system via its isolated 4-20 mA analog outputs (0-10 Volts optional) or its serial or MODBUS RTU communication interface. Users can count on optically isolated RS-232 or RS-485 communication port. The system can be delivered with an optional TCP/IP bridge.

The T/Guard Link can be interfaced with Neoptix NeoLink software, allowing complete control over the system for the setup and configuration. The software also provide a data logging option to record temperature points directly into a Microsoft(tm) Excel(tm) file.

The T/Guard Link is the perfect system for a small transformer, an embedded system or for the cost-conscious user. It is available with 1 to 8 optical channels. Moreover, the mounting brackets are integrated directly onto the T/Guard Link box, providing a quick and robust installation in the transformer control cabinet.

Specifications

T/GUARD LINK SYSTEM SPECIFICATIONS

Model name:
T/Guard Link

Number of channel:
Multi-channel instrument ; from 1 to 8 optical channels

Resolution:
0.1°C (0.1°F)

Accuracy:
±1.0°C (1.6°F) or 1 % Full-Scale input range

Calibration:
No system recalibration needed over lifespan to remain within specifications

System sampling rate:
250 ms switching rate between each channel; Rate can be adjusted by user from 250 milliseconds to one point per week

Data output rate:
Data output rate can be adjusted by user from one point every 250 milliseconds to one point per week.

Upgradability - Firmware:
Flash ROM upgradeable through serial communication

Display:
None

Units:
User selectable, Metric or Imperial

Data logging memory :
Not available

Temperature measurement range:
-80 to 300°C (-112 to 572°F)

COMMUNICATION AND I/O

Operating Mode:
ASCII commands over RS-232/RS-485/MODBUS or Neoptix™ NeoLink™ PC Software

Communication (hardware):
Optically isolated RS-232 or RS-485

Communication protocols:
ASCII (HyperTerminal)
MODBUS RTU (Full or Half-Duplex)
External Ethernet bridge (optional)

Remote (SCADA) output :
4-20 mA output (Max allowable load resistance of 450 ohms
0-10 Volts (optional)

Relays:
None

Analog Outputs :
Detachable header connector blocks, 3.1 mm pitch.
One analogue I/O per channel
Standard: 4-20 mA, Optional (no cost) : 0-10 Volts

System status reading and indicators :
System has internal built-in temperature sensor; info can be logged into internal memory or sent through serial communication

MECHANICAL AND ENVIRONMENTAL

Operating temperature:
-40 to +75°C, 5-90% humidity, non-condensing

Storage temperature:
-50 to +85°C, 5-90% humidity, non-condensing

Board level environmental protection:
MIL-I-46058C (IPC-CC-830) Type SR silicone conformal coating

Light source MTBF:
Light source lifespan and optimal system performance superior to 300 years of continuous use. No degradation of total system accuracy over light source lifespan.

Vibration :
60/120 Hz @ 0.1 mm displacement

Shock :
10 G half-sine in three orthogonal planes

Form factor:
IP 65 enclosure, mounting brackets at each corner

Front membrane :
UV stabilized polyester

Connectors:
Optical: ST connector
Serial and power-in: 3.1 mm pitch connectors
socket for plugs with screw terminals

Dimensions/weight:
Width: 190 mm ; Height: 113 mm; Thickness: 38 mm
Weight: 0.7 Kg

COMPLIANCE

Conducted/Radiated Emissions and Surge Withstand :
IEC 6100-4-2 ESD
IEC 6100-4-3 Radiated RFI
IEC 6100-4-4 Burst
IEC 6100-4-5 Surge
IEC 6100-4-6 Induced (Conducted) RFI
IEC 6100-4-8 Magnetic field
IEC 60255-5 Dielectric strength
IEEE C37.90 Dielectric strength
IEEE C37.90.1-2002 Fast transient
IEEE C37.90.1-2002 Oscillatory

Environmental :
IEC 60068-2-1 Cold temperature
IEC 60068-2-2 Dry heat
IEC 60068-2-30 Humidity (damp heat, cyclic)
IEC 60255-21-1 Vibration
IEC 60255-21-2 Shock
UL 60950 Temperature range

POWER

Power requirements:
18 - 24 VDC

Power consumption:
12 Watts

OTHER

Probe compatibility:
Compatible with all of Neoptix GaAs fiber optic temperature probes and transducers.

Probe signal optimization:
System has built-in Neoptix™ WTune™ probe optimization algorithm

Warranty:
Five-year complete international warranty
Extended warranty available

(specs V1177R1)

 

Literature/images

LITERATURE

• T/Guard Link™ System Datasheet
  Format: PDF - File size: 694 KB

 

IMAGES

T/Guard Link side view

 

 

 

Accessories

Specific accessories specifically designed to complement and enhanced your T/Guard LinkSystem:

NeoLink Software (Part: NEO-LNK)
NeoLink control and datalogging software

Serial communication cable (Part: NXP-304)
Shielded RS-232C Serial cable, non-twisted, DB9F to DB9M, 6FT, to mate Neoptix signal conditioners to PC.

DIN Rail mountable power supply (Part: TGD-DPS)
DIN rail mountable 24 VDC universal (100-240VAC @ 47-63 Hz or 120~370 VDC), 0.6A, power supply for your T/Guard Signal Conditioner.