TSH Model
Horizontal
Thermal Shock Chamber

Guaranteed part temperature recovery/soak monitors the worst case part thermocouple and allows transfer only when set-point temperature has been reached
Thermal heat sinks in each zone for peak demand of heating and cooling. Provides extra thermal energy to efficiently meet the MIL-STD 883C requirements.
Temperature recorder provides 24 hour part temperature recording as the load travels from zone to zone.
Environmentally correct refrigerants are used that are ozone-free and meet all current regulatory requirements.
Safety:

Electrically interlocking chamber doors and equipment section doors

Electromechanical carrier lockout

Transfer alarm/jam alarm

Factory set over temperature controls

Basket automatically stops when doors are opened

Emergency Off Button (optional)

Full opening access doors and removable access panels with quick release hardware for ease in servicing
Adjustable door latch(es)
Nichrome wire heating elements with failsafe fusible link
Air circulation system has solid stainless steel jackshafts
Solid state heat switching
1-inch travelling access port
Pneumatically operated elevator transfer system
Two adjustable shelves in carrier basket
Main power disconnect switch
Door safety limit switches

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Environmental Test Chamber List

	TWO ZONE, SINGLE CAPACITY (-2) (One hot zone & one cold zone) The products under test travel via a carrier basket, alternating between the hot and cold zones.
	TWO ZONE, DOUBLE CAPACITY (-2D) (Two hot zones & one cold zone) In the two zone, double capacity system, the cold zone is always in use, which contributes to the efficiency of the system.
	THREE ZONE, SINGLE CAPACITY (-3) (One hot zone, one ambient zone & one cold zone) In the horizontal three zone, the products travel via a carrier basket between the cold and ambient zones, and the hot zone travels to envelop the carrier basket.

• -73°C to +177°C
  

»Refrigeration System:

• Water-cooled cascade condenser
• Copper tubing cooling coils with aluminum fins
• High temperature silphosed or silver soldered joints
• Semi-hermetic compressors
• Stainless steel drip pan located under the cascade refrigeration coils ensures against moisture problems in the machinery package
• HFC refrigerants

»Optional Features:

• GN2 purge in cold zone minimizes build-up of frost on the cold zone coils, which extends the number of cycles which can be performed between defrosting. Dry air purge where no GN2 is available.
• Semi-automatic defrost system monitors the cold zone and alerts the operators when a defrosting is needed. When activated, the system goes through a complete defrost cycle and re-starts the cold zone. Can run up to 1,000 cycles before defrosting may be needed.
• LN2 boost/backup system to assist the mechanical cooling system where loads exceed system ratings or where there is a shutdown of the mechanical cooling and LN2 is used for temporary operation.
• Noise reduction package provides sound insulation for the equipment section. Can reduce sound levels to 75 dBa.
• Precision over temperature and under temperature controls provide Factory Mutual (FM) user-set control to protect the products under test.
• Air-cooled condenser available where cooling water is not accessible for system operation.
• Remotely located equipment packages are available. Consult the factory for configurations and specifications.