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SEI/MEI-HTX-2

Electrically heated tubing bundles Thermon SEI/MEI-HTX-2

Application SEI/MEI-HTX-2

TubeTrace SEI/MEI HTX-2Freeze protection 5 °C (40 °F) of steam lines. Intermittent exposure to 593 °C (1100 °F). TubeTrace HTX2 is a pre-engineered electric traced tube bundle for steam sample lines and impulse lines to pressure transmitters. TubeTrace HTX2 will provide water freeze protection in ambient conditions down to - 34°C (- 30 °F) with 40 kph (25 mph) wind. HTX2 is suitable for superheat steam service temperatures up to 593 °C (1100 °F) for a duration of 2 minutes per cycle.

In the past, the only option for tubing subject to high temperature exposure was heat traced with series resistance mineral insulated (MIQ) heat trace. MIQ heaters are custom made to fit each application, so long lead times and specific field measurements are often required. TubeTrace HTX2 solves this with Thermon parallel resistance HPT heat trace isolated from direct contact with high temperature tubing..

TubeTrace HTX2 bundles are suitable for continuous exposure to 399 °C (750 °F) and/or intermittent superheat steam service temperatures to 593 °C (1100 °F) even when power is applied to the heat trace during ambient conditions of 5 °C (40 °F).

Construction of Thermon TubeTrace SEI/MEI-HT-2

Конструкция TubeTrace SEI/MEI HTX-21. Process tube(s).

2. High temperature woven glass fiber thermal insulation.

3. HPT heat trace.

4. Thermal diffusion foil.

5. Non-hygroscopic glass fiber insulation.

6. Polymer outer jacket (ATP or TPU).

Ratings of Thermon TubeTrace SEI/MEI-HTX-2:

Watt density 16 W/m 10 °C (5 w/ft °50F)
Supply voltages 120 or 240 vac nominal
Maintain temperature 5 °C (40 °F)
Minimum design ambient - 34 C (- 30 °F)
Max. continuous exposure temp. 399 °C (750 °F)
Intermittent service temperature 593 °C (1100 °F)

Product features of Thermon TubeTrace SEI/MEI-HTX-2:

  • “Touch Safe” jackets protect personnel
  • “Cut-to-length” for faster installation
  • Rated for intermittent exposure temperatures of 593 °C (1100 °F) for 2 minutes / 2.5 hr cycle
  • Designed for ambient sensing control at 5 °C (+ 40 °F)
  • Freeze protect in ambient of - 34 °C (- 30 °F)

Power output curves:

The power outputs shown apply to cable installed on insulated metallic pipe (using the procedures outlined in IEEE Standard 515) at the service voltages stated below.

Circuit breaker sizing

Maximum circuit lengths for various circuit breaker amperages are shown below. Breaker sizing should be based on the National Electrical Code, Canadian Electrical Code or any other applicable code. The National Electrical Code and Canadian Electrical Code require ground-fault protection of equipment for each branch circuit supplying electric heating equipment. Check local codes for ground-fault protection requirements.

120 vac service voltage Max.circuit length vs.breaker size m (ft)
Catalog number Start-up temperature °C (°F) 20А 30А 40А 50А
HTP 5-1 10 (5) 98 (320) 130 (425) - -
- 18 (0) 88 (290) 130 (425) - -
- 29 (- 20) 84 (275) 130 (425) - -
- 40 (- 40) 81 (265) 127 (415) 130 (425) -
240 vac service voltage Max.circuit length vs.breaker size m (ft)
Catalog number Start-up temperature °C (°F) 20А 30А 40А 50А
HTP 5-2 10 (50) 195 (640) 259 (850) - -
- 18 (0) 177 (580) 259 (850) - -
- 29 (- 20) 169 (555) 233 (765) 259 (850) -
- 40 (- 40) 163 (535) 233 (765) 233 (765) 259 (850)
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