GT-PFASafetyCoated

Supported Applications

The Omega GT-PFA Safety Coated series consists of PFA fluoropolymer safety coated liquid-in-glass thermometers designed to provide protection from breakage. In the event of glass fracture, the coating encapsulates the liquid and glass fragments. The product overview identifies these instruments for use in chemical laboratories, universities, scientific institutions, food and beverage processing, petrochemical laboratories, pharmaceutical industry, medical industry, manufacturers, dairies, breweries, and distilleries.

Operating Conditions & Performance

The series offers measurement ranges spanning from -10/70°C to 20/500°F across various models. Accuracy is specified in scale divisions and varies by model type and temperature range; for example, Yellow Back partial immersion models list accuracy of "1" or "1, 1.5 above 110°C," while White Back models may specify "1.5" or "2, 2.5 above 100°C." Specific high-range Fahrenheit models such as GT-30555T (Total Immersion) list accuracy of "1.5, 2 above 230, 2.5 above 392°F."

Calibration is performed in an ISO/IEC 17025:2005 and A2LA accredited laboratory with traceability to NIST and DAkkS. Yellow Back models include a multi-language Statement of Accuracy indicating this traceability, whereas White Back models do not carry the "Traceable to DAkkS" designation in the specification tables.

Key Performance Parameters

• Measurement Type: Liquid-in-Glass Thermometer with PFA fluoropolymer safety coating.
• Overall Lengths: 200 mm (7.9"), 300 mm (12"), and 350 mm (14").
• Immersion Types: Partial Immersion or Total Immersion.
• Accuracy Traceability: NIST and DAkkS for Yellow Back models; NIST only implied for White Back based on table data.

Configuration Options

The series is configurable across three primary dimensions: overall length, immersion type, and back color/type. Models are available in 7.9", 12", or 14" lengths with corresponding partial or total immersion depths (e.g., 50 mm / 2" for 7.9" models; 76 mm / 3" for 12" and 14" models).

Model Families

• Yellow Back: Models such as GT-305xxT series feature a yellow back design. These are the only variants listed with "Yes" for DAkkS traceability in the specification tables.
• White Back: Models including GT-381xx, GT-371xx, and GT-36xxx series feature a white back design. The specification table indicates these are not traceable to DAkkS ("No").

Immersion Configurations

• Partial Immersion: Requires immersion of the liquid column up to a specific depth, typically 50 mm (2") for shorter models and 76 mm (3") for longer models.
• Total Immersion: Designed for full submersion in the medium being measured.

Key Product Differences

The primary distinction between variants is the back color and associated traceability. Yellow Back thermometers (e.g., GT-30591T, GT-30507T) are documented as having accuracy statements traceable to DAkkS in addition to NIST. White Back thermometers (e.g., GT-38110, GT-36230) do not list this specific dual-traceability feature.

Accuracy specifications differ by model and range. For instance, the 7.9" Yellow Back partial immersion thermometer with a -10/150°C range (GT-30593T) specifies accuracy of "1, 1.5 above 110°C," while the equivalent White Back model (GT-38150) lists "1.5, 2 above 100°C." Similarly, high-range Fahrenheit models show stepped accuracy values; GT-30545T (Yellow Back, Partial Immersion, 0/300°F) specifies "1.5, 2 above 230°F," whereas the White Back equivalent GT-35300 lists "1.5, 2 above 212°F."

Scale divisions vary by range and model type, appearing as 0.5, 1, or 2 scale divisions depending on the specific temperature span selected.