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TestEquity LLC, Environmental Chamber Division Environmental Chambers for Temperature and Humidity Testing
   TestEquity Model 1007H Temperature/Humidity Chamber - Specifications

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Temperature Range -73C to +175C
Control Tolerance 0.2C (Measured at the control sensor after stabilization)
Uniformity 0.5C (Variations throughout the chamber after stabilization)
Humidity Range

Standard Range:
10% to 95%

(limited by a minimum 6°C dewpoint and maximum dry bulb of +85°C)

With optional GN2 Purge or Dry Air Purge: 5% to 95%
(Dry bulb range of +10°C to +85°C)

Temp/Humidity Range

Control Tolerance 3% RH  
Humidity Sensor Dynamic capacitive type (no wet wicks required)  

Cool Down Transition Time* (uncontrolled humidity mode)
Start Temp End Temp
+23°C 0°C -40°C -55°C -65°C -73°C
+23°C ----- 4 min 18 min 25 min 33 min Ultimate
+50°C 5 min 11 min 27 min 36 min 45 min Ultimate
+85°C 13 min 20 min 37 min 47 min 55 min Ultimate
+150°C 32 min 39 min 58 min 65 min 76 min Ultimate
Heat Up Transition Time* (uncontrolled humidity mode)
Start Temp End Temp
+23°C +50°C +85°C +125°C +150°C +175°C
+23°C ----- 1.5 min 7 min 14 min 20 min 25 min
0°C 1.5 min 3.5 min 13 min 20 min 23 min 31 min
-40°C 6 min 11 min 17 min 24 min 30 min 35 min
-55°C 8 min 13 min 19 min 26 min 32 min 37 min
-65°C 10 min 14 min 21 min 28 min 34 min 39 min

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 +50°C to -40°C = 90°C / 27 min = 3.33°C/min.
Heat Up Example: From -40°C to +50°C = 90°C / 11 min = 8.18°C/min.

*Note:Transition times are measured after a 2 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. Performance is reduced by 17% with 50 Hz input power.

Live Load Capacity (uncontrolled humidity mode)
+23C 0C -40C -55C -65C
1,000 Watts 800 Watts 500 Watts 400 Watts 300 Watts

Refrigeration and Heating System

High Stage Refrigerant R-404A (Dupont HP-62)
Low Stage Refrigerant R-508B (Dupont SUVA-95)
Compressors 1.5 HP x 1.5 HP Tecumseh hermetic compressors in a cascade configuration.
Condenser Air Cooled
Heat of Rejection 14,800 BTUH (maximum rated chamber load at maximum cooling rate from high temperature soak)
Air Heater Power 2,000 Watts


Temp/Humidity Controller

Watlow F4 Controller with RS-232 interface, LED readout of temperature, LCD display of humidity and other parameters (standard).
Watlow F4T Touch Screen Controller with RS-232, Ethernet interface, 4.3" color graphic touch screen (optional).

Limit Controller Independent high and low temperature limits. Triggers an audible alarm and shuts down the chamber. Relay contacts provide a safety power interlock for test sample.
Chart Recorder   (Optional) Honeywell DR4300 Series. Two pen, 10" circular chart. Mounts in lower front door.

Input Power Requirements

  Phase Current Draw Minimum Service
230 V 10%, 60 Hz 1 PH 25 A 30 A
3 PH 19 A 25 A
208 V -5/+10%, 60 Hz 1 PH 28 A 35 A
3 PH 21 A 30 A

Input may be configured for single or three phase in the field by changing jumpers. Three phase load is semi-balanced. Call for other voltages or 50 Hz operation. Cooling performance is reduced 17% at 50 Hz.

Customer power source must be hard-wired to the chamber by a qualified electrician. Power cord and plug is not included.

Humidity Water Requirements

Supply and Drain

Must be provided with a water line and floor drain or optional Water Recirculation System. Negligible consumption.

Water Recirculation System (optional) Provides a reliable supply of filtered water for the humidity system. Perfect for installations where a water line and drain are not available.

Physical Characteristics

Inside Dimensions

24" W x 21" H x 24" D (7 cubic feet)
609 mm W x 533 mm H x 609 mm D (198 liters)

Outside Dimensions 33" W x 68.75" H x 54" D (nominal)
838 mm W x 1746 mm H x 1372 mm D
Door latch adds 3" to width on right side (may be removed to permit move-in through a 36" doorway). Circulator motor and housing adds 6" to height.
Minimum Installed Clearance 18" from the left and right side
24" from the rear
Window Viewing Area 13.375" W x 9 " H
Access Ports 4" Port on left and right side (two total)
Supplied with foam plugs
Weight Chamber Weight: 890 pounds
Shipping Weight: 1,058 pounds
Sound Level 62 dBA in cooling mode (A-weighted, measured 3" from the front or side surface, 63" from the floor, in a free-standing environment)

NOTE: Performance is typical and based on operation at 23C (73F) ambient and nominal input voltage. Designed for use in a normal conditioned laboratory. Operation at higher ambient temperatures may result in decreased cooling performance. Additional ports and shelves will also affect performance. Operation above 30C (85F) or below 16C (60F) ambient is not recommended.

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