SEI/MEI-HT
Electrically Heated Tubing Bundles Thermon SEI/MEI - HT
Application
Freeze protection 40°F (5°C) of steam lines. Continuous exposure to 750°F (399°C).TubeTrace HT is a pre-engineered electric traced tube bundle for steam sample lines and impulse lines to pressure transmitters. TubeTraceHT will provide water freeze protection in ambientconditions down to -50°F (-45°C) with 25 mph (40 kph) wind conditions.
In the past, 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 measurments are often required. TubeTrace HT solves this with Thermon parallel resistance HPT heat trace isolated from direct contact with high temperature tubing.
TubeTrace HT bundles are designed to withstand continuous 750°F (399°C) steam exposure temperature even when power is applied to the heat trace during ambient conditions of 40°F (5°C).
Construction of Thermon TubeTrace SEI/MEI-HT
1. Process tube.
2. High temperature woven glass fiber thermal insulation.
3. Heat reflective foil.
4. HPT heat trac.
5. Thermal diffusion foil
6. Non-hygroscopic glass fiber insulation.
7. Polymer outer jacket.
Ratings of Thermon TubeTrace SEI/MEI-HT:
| Watt density | 10 w/ft 50°F (33 W/m 10°C) |
|---|---|
| Supply voltages | 120 or 240 vac nominal |
| Maintain temperature | 40°F (5°C) (Freeze protection) |
| Minimum design ambient | - 50°F (- 45°C) |
| Max. continuous exposure temp. | 750°F (399°C) |
| Minimum bend radius | 16 (406 mm) |
Features of Thermon TubeTrace SEI/MEI-HT:
- "Touch safe" jackets protect personnel
- "Cut-to-length" for faster installation
- Rated for 399°C (750°F) continuous exposure temperatures
- Designed for ambient sensing control at +5°C (40°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 breakeramperages 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 ft (m) | ||||
|---|---|---|---|---|---|
| Catalog number | Start-up temperature °F (°C) | 20А | 30А | 40А | 50А |
| HTP 10-1 | 50 (10) | 155 (47) | 240 (73) | 300 (91) | - |
| 0 (- 18) | 145 (44) | 215 (66) | 300 (91) | - | |
| - 20 (- 29) | 135 (41) | 210 (64) | 290 (88) | 300 (91) | |
| - 40 (- 40) | 130 (40) | 200 (61) | 275 (84) | 300 (91) | |
| 240 vac service voltage | Max. circuit length vs. breaker size | ||||
|---|---|---|---|---|---|
| Catalog number | Start-up temperature °F (°C) | 20А | 30А | 40А | 50А |
| HTP 10-2 | 50 (10) | 310 (95) | 485 (148) | 600 (183) | - |
| 0 (- 18) | 280 (85) | 435 (133) | 600 (183) | - | |
| - 20 (- 29) | 270 (82) | 420 (128) | 580 (177) | 600 (183) | |
| - 40 (- 40) | 260 (79) | 400 (122) | 550 (168) | 600 (183) | |