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T/Guard 408 & 408XT Fiber Optic Temperature Monitor
Brand: Qualitrol CompanyRugged multi-channel fiber optic real-time hot spot monitoring system for dry-type and oil-filled transformers.
Features- Provide essential data during transformer heat run
- Maximize cooling efficiency with accurate hot spot temperature measurement
- Optimize loading dynamically without compromising transformer life
- Complements predictive hot-spot algorithm simulations
- Compatible with Qualitrol Q-Link™ for Apple® iPhone®, OptiLink and OptiLink-II
- Available with 4, 6, 8, 10, 12 or 16 channels
Specifications
Brand
Accuracy
- ± 1.0° C (1.6° F)
Analog Output
- 4-20 mA, Detachable Header Connector Blocks, 5.08 mm Pitch, up to 16 Analog Outputs (One Per Channel)
Built-In Calculations
- Minimum/Max.imum
Calibration
- No System Recalibration Needed over Lifespan to Remain within Specifications
Communication
- Isolated RS-485 Serial Port on Screw Terminal - T/GUARD 408
- Isolated RS-485 Serial Port, Ethernet (100Base-TX) - T/GUARD 408XT
Conducted, Radiated Emissions, Surge Withstand & Environmental
- FCC 47 CFR Part 15, Subpart B
- ICES-003 Issue 4, Feb 2004
- IEC 60068-2-14 Temperature -40° to 72° C (-40° to 161.6° F)
- IEC 61000-4-11 Voltage Dip
- IEC 61000-4-2 ESD
- IEC 61000-4-3 Radiated RFI
- IEC 61000-4-4 Burst
- IEC 61000-4-5 Surge
- IEC 61000-4-6 Induced (Conducted) RFI
- IEC 61000-4-8 Magnetic Field
- IEEE C37.90 Dielectric Strength (High Pot)
- IEEE C37.90.1-2002 Fast Transient
- IEEE C37.90.1-2002 Oscillatory
Connector
- Optical: Standard ST Connector
Data Logging Memory
- 2 GB On-Board
- Option: 4 GB
Data Logging Rate
- Can be Adjusted by User from One Point Every second to One Point Per Hour Period
Display
- 7-Segment (LED)
- Multiplexed Display for Channels 9 to 16
- One Four-Digit Block Per Channel
Form Factor
- Mounting Details: Enclosure Must be Protected from Water & Dust. It Can be Mounted on a Back Panel or from the Front, Using M6 or M8 Bolts
Front Membrane
- UV Stabilized Polyester with 5 Million Push MTBF Keys
Light Source MTBF
- Light Source Lifespan & Optimal System Performance Superior to 300-Years of Continuous Use. No Degradation of Total System Accuracy over Light Source Lifespan.
Number of Channels
- 4, 6, 8, 10, 12, 14 or 16 Optical Channels
Operating Mode
- System Front Panel Keypad, ASCII Commands over RS-485 (HyperTerminal or OptiLink-II) - T/GUARD 408
- System Front Panel Keypad, ASCII Commands over RS-485 (HyperTerminal or OptiLink-II), Ethernet (Web-based Configuration) - T/GUARD 408XT
Operating Temperature
- -40° to 72° C (-40° to 161.6° F), 5-90 % Humidity, Non-Condensing
PCB Environmental Protection
- MIL-I-46058C (IPC-CC-830) Typical SR Silicone Conformal Coating
Power Consumption
- 25 W
Power Requirement
- 85-264 Vac or 110-370 Vdc, 47-63 Hz Frequency
Relay Drive
- Direct with System’s Built-In Calculation Algorithms
Relays
- Form-C (SPDT) Relays [5 A / 240 Vac or 0.3 A / 240 Vdc or 8 A / 24 Vdc, Max.
Resolution
- ± 0.1° C (0.1° F)
Sensor, Probe Compatibility
- Compatible with All Qualitrol/Neoptix Gas Fiber Optic Temperature Probes & Transducers
Sensor, Probe Signal Optimization
- System Has Built-In Neoptix Wtune™ Probe Optimization Algorithm
Storage Temperature
- -40° to 85° C (-40° to 185° F), 5-90 % Humidity, Non-Condensing
System Sampling Rate
- 250 milliseconds Switching Rate between Each Channel
Temperature Measurement Range
- -80° to 300° C (-112° to 572° F)
Units
- User Selectable, Metric or Imperial, LED Indicators on Front Panel
Upgradability - Firmware
- Flash Upgradeable through Serial Port - T/GUARD 408
- Flash Upgradeable through Serial Port or Ethernet/Web Browser - T/GUARD 408XT