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Environmental Stress Systems Mechanically Refrigerated Thermal Platform MRTPG22211K-001 .

Refrigeration Plant: Dual Stage Cascade (-70C).

Cabinet Configuration: Under Bench.

Heat Rejection: Air-cooled Condenser.

Controllers: RM w/std bus and modbus rtu eia-232/485.

Thermal Range: 22C to 70C.

Refrigerant: HI R404A LO 5086.

Made in USA.

Make: Environmental Stress Systems.

Model: MRTPG22211K-001.

Serial Number: 18111902.

Overall Dimensions: Length: 42" Width: 30" Height: 30" .

Electrical: 220V, 1PH, 60Hz, 4400W, 3-wire.

The ESS, Inc. MRTP thermal platform systems utilizes an efficient mechanical refrigeration system that re-circulates the refrigerant in a closed loop system. Only environmentally friendly zero-ozone depleting refrigerants are used. Proprietary design features provide fast ramp rates with efficient heat removal. The system is portable and a single AC outlet is all that is needed to operate it. The system normally uses an air-cooled condenser, which rejects a certain amount of heat into the room. If a water cooling source is available, the system can operate with a water-cooled condenser. If many systems will operate in the same room a water cooling circuit should be considered to remove the heat rejected by the refrigeration cycle.

There are two types of MRTP systems. The first type is called single stage and uses one refrigeration loop to cool the thermal platform. The second type called cascade uses two refrigeration loops in series enabling the temperature of the thermal plate to be as low as -80ºC.

Depending on the use or the space intended for the MRTP, several configurations are available. The Under-Bench configuration is very similar except that the cabinet is wider and not as high so that the it can be operated under a table or work bench while the plate (attached with an umbilical) can be used above. ESS, Inc. offers several Accessories for its MRTP systems. Accessories are available such as a polycarbonate cover, an adapter plate, a hold down clamp, a clam shell dry-box desiccator, a low pressure nitrogen purge kit and a high pressure nitrogen purge kit.

Traditional MRTP Systems

 Mechanically refrigerated thermal platform (MRTP) systems eliminate the need for LCO2 or LN2 expendable refrigerants. Thermal platforms offer the fastest, most convenient method of test- ing electronic components that may be heated and cooled by direct conduction. Not only do thermal plates offer much faster thermal cycling rates than environmental chambers, but cable connections, probing and tuning of the device under test is much more easily accomplished. They can be used on the floor with casters or po- sitioned underneath a work table to save floor space.

Underbench Style

Heating of the plate is provided by resistance elements and cooling by a closed-loop recirculat- ing vapor compression mechanical refrigeration system utilizing chlorine-free zero ozone deplet- ing refrigerant.

Several standard sizes insure quick delivery of a plate that is well suited to your test require- ments. Additional standard features include precision grinding and hard plating of plate sur- faces, threaded 18-8 stainless steel 1/4”-20 in- serts for fixturing and a fixed set point, latching thermal overtemperature failsafe system.

Dry boxes utilizing a dry Nitrogen (GN2) or very dry air purge system allow moisture and frost free testing below dew point. Ground & plat- ed fixturing adapter plates and our universal hold down clamping arm are quick & easy ways to at- tach devices to the platform.