Re: Test Equity 115A Temperature Chamber with Watlow F4T, Temp range -73 to 175C, Chamber 16x12x14 from Equip X

Temperature Range

-73°C to +175°C

Control Tolerance

±0.5°C (±0.2°C Typical) (Short-term variations measured at the control sensor after stabilization)

Uniformity

±1.0°C (Variations throughout the chamber after stabilization)

Heat Up Rate of Change*

5°C/minute typical

Cool Down Rate of Change*

2.8°C/minute from +85°C to -40°C (standard 60 Hz models)

2.1°C/minute from +85°C to -40°C (115A-EX 50 Hz export models)

Cool Down Transition Times*

Rate Of Change

To calculate rate of change for a particular condition, take the difference between the Start Temp and End Temp and divide by the Transition Time.

Cool Down Example: From +85°C to -40°C = 125°C / 45 min = 2.8°C/min.

*Note: Transition times are measured after a 1 hour soak at the respective start temperature with an empty chamber, as indicated on the temperature controller, 23°C ambient. Measured with setpoint beyond the start and end temperatures. Does not include the effect of proportional band when approaching setpoint. Measured at nominal line voltage of 120V, 60 Hz. Performance is reduced on 115A-EX 50 Hz export versions.

Refrigeration and Heating System

High Stage Refrigerant

R-404A (Dupont HP-62)

Low Stage Refrigerant

R-508B (Dupont SUVA-95)

Compressors

1/2 HP x 1/3 HP Tecumseh hermetic compressors in a cascade configuration.

Condenser

Air Cooled

Heat of Rejection

4,000 BTUH (maximum rated chamber load at maximum cooling rate from high temperature soak)

Heater Power

600 Watts

Air Flow

85 CFM

Instrumentation

Temperature Controller

Watlow F4T Touch Screen Controller with RS-232, Ethernet interface, 4.3" color graphic touch screen.

Limit Controller

Independent high and low temperature limits. Triggers an audible alarm and shuts down the chamber.

Power Requirements

Input Voltage

120 V nominal (110 to 126 VAC), 60 Hz, 1 PH

Max Current Draw 15 A, Recommended Minimum Service 20 A

Power Cord

and Plug

6' Power cord supplied with a molded NEMA 5-20P plug.

Plugs into a standard NEMA 5-20R receptacle.

Use of an extension cord is not recommended.

Physical Characteristics and Safety

Inside Dimensions

16" W x 12" H x 14" D (1.55 Cubic feet)

406 mm W x 305 mm H x 353 mm D (44 liters)

Outside Dimensions

Floor Model 115A

24" W x 61" H x 26" D (nominal)

610 mm W x 1549 mm H x 660 mm D

Minimum Installed Clearance

6" from the left and right side

12" from the rear

Window Viewing Area

8" W x 6" H

Access Ports

3" (2.83" inside diameter) supplied on all Model 115A chambers. Port on left and right side (two total)

Supplied with silicone foam port plugs

Weight

Benchtop Model 115A-B

Chamber Weight: 260 pounds

Shipping Weight: 340 pounds

Floor Model 115A-F

Chamber Weight: 300 pounds

Shipping Weight: 381 pounds

Sound Level

52 dBA in cooling mode (A-weighted, measured 36" from the front surface, 63" from the floor, in a free-standing environment)

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