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Three-Temperature Screen
Three-Temperature Screen
A heating cable has three temperature limits, not one. Enter the temperature the line has to hold and the highest temperature it ever reaches, including a steam-out, and the check reports which Jinyou constructions clear every rung.
Parameter Configuration
Diagnostic Result
Published limits
| Construction and grade | Maximum maintain | Maximum withstand |
|---|---|---|
| Self-regulating, black | 65 ± 5 °C | 90 °C |
| Self-regulating, brown | 105 ± 5 °C | 130 ± 5 °C |
| Self-regulating, red | 135 ± 5 °C | not published — 150 °C is a maximum surface figure, not a withstand rating |
| BL-10-V2-Q-J3 (10 W/m) | 150 °C | 205 °C |
| BL-20-V2-Q-J3 (20 W/m) | 140 °C | 205 °C |
| BL-30-V2-Q-J3 (30 W/m) | 125 °C | 205 °C |
| BL-40-V2-Q-J3 (40 W/m) | 100 °C | 205 °C |
| BL series, J4 sheath code | no model row published | 260 °C |
| Skin-effect system | up to 500 °C | not published |
Application Notes
Nominal values are used for the check. The plus or minus 5 °C tolerance on the self-regulating grades is a manufacturing band, not extra headroom, so a design that only clears a rung inside that band should be confirmed with an engineer. Where a cell reads “not published” or “no model row published”, the screen returns that construction for engineering confirmation rather than clearing it — a figure the client does not publish is never borrowed from a neighbouring row.
Ask an engineer whether your process temperature clears the screen →This screen checks two of the three rungs — maintain and withstand. The exposure rung, and every published maintain, exposure and withstand figure, is on the heat tracing cable page.
