BACKGROUND - HEM Sealed Heater™
This heater has a diameter of 0.330" and features a ceramic-to-metal seal that has been tested at 0⁰C for 72 continuous hours, successfully passing both hi-pot and meg-ohm tests. It is designed for harsh environments, including ultra-high vacuum freezing temperatures or prolonged immersion in liquid.
Additionally, the heater can be exposed to a 5 x 10 ̄⁹ vacuum environment.
Features
- 538⁰C (1,000⁰F)
- 0.330” Ø (+.000”/ -.002”)
- Solid Nickel Pins 0.040” x (2) ~ 3” Long
- Ceramic beads can be provided upon request
- Vacuum compatible 5 x 10 ̄⁹, (helium leak tested at BCE up to this spec)
- Flanges and fittings can be added under the ceramic – to – metal seal
- 500 Volt DC insulation test 8 seconds, 100 ₘΩ minimum.
- Hi-pot 1300VDC @ 0.3 mA for 1 second
- Material: 321 Stainless Steel Body, Solid Nickel Pin, with Standard Braze (54% silver)
- 12 to 240 Volt
- 1.5” to 24” Immersed length
- Wattage varies per the application required ~150 watts per square inch of heater output