Description

Centorr's Series LF Top Loading Multi-Purpose furnaces are available with a high temperature vacuum or controlled atmosphere Refractory Metal Heat Zone. With a Refractory Metal Heat Zone, this vertical furnace is used for high vacuum heat treatment of metals and ceramics, reactivity studies, and small scale sintering studies.

A typical furnace is made up of a double-walled, water-cooled 304L stainless steel chamber with water-cooled, hinged lid, hot zone with high tungsten mesh element with tungsten and molybdenum sheet heat shields, a power supply, temperature sensor, controller and over-temperature controller with hot zone interlock.

This Metal Heat Zone furnace has (3) vacuum pumping systems to choose from: Roughing Pump, Turbo Molecular Pump, or Diffusion Pump.

Features

  • Operation to 2000°C
  • Double-walled, water-cooled 304L stainless steel chamber
  • Digital programmable temperature controller with auto-tuning
  • Stainless steel chamber, with refractory metal hot zone.
  • Power supply with current limiting, and soft start features fully interlocked for failsafe operation.

Series LF with Metal Heat Zone shown above.

Series LF Metal Heat Zone

Specifications

PERFORMANCE SPECIFICATIONS


Operating Temperature: 2000°C (3632°F) in vacuum, 2000°C (3632°F) in Argon, Nitrogen Gas, or Forming Gas.

Operating Pressure: 2 PSIG (0.14 KG/SQ. CM) positive pressure to 10-3 torr vacuum or 10-6 torr vacuum (dependent on model selection)

Ultimate Vacuum:
 Standard Roughing Pump Model - 10-2 to 10-3 Torr (chamber clean, cold, empty and out gassed).
 Diffusion Pump Model - 10-5 to 10-6 Torr (chamber clean, cold, empty and out gassed).
 Turbo Molecular Pump Model - 10-5 to 10-6 Torr (chamber clean, cold, empty and out gassed).

Heat Up Time: 21°C to 2000°C, Approximately 176 minutes

Cool Down Time: 1600°C to 100°C, Approximately 19 minutes


PRICE

Standard Mechanical Pump Model: $51,000 USD

Diffusion Pump Model: $61,800 USD

Turbo Molecular Model: $67,650 USD


SHIPPING

1 month from Purchase Order*


EQUIPMENT DETAIL

Chamber:Double-walled, water-cooled 304L stainless steel chamber with water-cooled 304L stainless steel hinged lid.

Hot Zone:3" (76.2 mm) dia. x 5" (127 mm) high tungsten mesh element with tungsten and molybdenum heat shields.

PUMPING SYSTEM ALTERNATIVES
Roughing Pump
Vacuum System:
Manual vacuum system with VRL 902111 vacuum instrument Vacuum Research Corp. Model 200-7, 200 L/in @60 Hz (7.0 CFM) direct drive mechanical pump (or equal) and all necessary plumbing and manifolding.

Diffusion Pump
Vacuum System:
2" (50.8 mm) manual high vacuum system with Granville 330 vacuum instrument, Leybold Heraeus Model D8B (7.0 CFM) - 198.2 LPM) direct drive mechanical pump (or equal), Varian HS-2 diffusion pump, water baffle, high vacuum gate valve, and all necessary plumbing and manifolding.

Turbo Molecular
Vacuum Pumping System:
2" (50.8 mm) manual high vacuum system with Granville 330 vacuum instrument, high vacuum gate valve, Varian TMP V81, rated 77 L/S N2, Varian SH-110 dry scroll pump rated 110 L/M, and all necessary plumbing and manifolding.

Power Supply:12 KVA SCR controlled with current limiting and soft start features-fully interlocked for failsafe operation.

Temperature Sensor:(2) Type "C" molybdenum sheathed thermocouples

Controller:Eurotherm 2416 temperature controller/programmer. 1/16 DIN temperature controller, 4 programs of 16 segments, auto-tune, RS-485 Modbus RTU communications.

Overtemperature Controller
& Hot Zone Interlock:
Eurotherm 2216E overtemperature controller. 1/16 DIN temperature controller & hot zone interlock. RS-485 Modbus RTU communications.

Furnace Cabinet:Combination furnace, power supply, temperature control instrumentation, vacuum instrumentation, manually operated valving, enclosed in a painted steel cabinet.


UTILITIES
Electrical:16 KVA, 220V/1PH/50-60 Hz, 72 Amps Total. Connected load, 100 AMP Circuit


Easy to Connect Water and Gas Connections
Water Supply:2 GPM (7.5 LPM) at 70°F (21°C) max. 40 PSIG
 Max pH not to exceed 8.5.
 Conductivity not to exceed 400 micro MHOS (Micro Siemens)
 ½" NPTM drain connection.

Water Return:20 PSIG (1.4 Bar) Max. back pressure
 ½" NPTM drain connection

Inert Gas:Argon, nitrogen, or 4% H2/96% N2, approximately 0.2 cubic feet per backfill to atmospheric pressure, regulated at 10 PSIG.
 ¼" NPTF inlet connection
 ¼" NPTF exhaust connection

Pump Exhaust:¾" (19.0 mm) ID Hose connection

Air Supply:80 PSIG. ¼" NPTF connection

TERMS

Payment with Purchase Order
 FOB: EX-WORKS (CVI Manufacturing Facility, Nashua, NH USA)
 CVI Standard Terms and Conditions, Form TC-2000
 *Shipment Depends on Factory Loading at Time of Order


WARRANTY

Warranty, Manuals, Checkout and Field Service Warranty, Form C/VI-107


CRATING

54" (137.1 CM) Long X 52" (132 CM) wide X 77" (195.5 CM) high
 1250 Lbs. (567 kg)