Criterion Temperature Benchtop Chambers The Criterion temperature chamber series provides an economical and space-saving solution for a variety of temperature testing requirements. The chamber's interior size is 3.5 inches wider than traditional benchtops, yet the exterior is 20% narrower. The BTZ-133 chamber uses 115V power, meaning no special power hook-ups. - Lowest temperature: -20, -35, or -70°C （-4, -35, or -100°F）
- Highest temperature: 180°C （354°F）
- Chamber sizes: 1.5 or 4 cubic feet
- Fully programmable with Watlow F4 controller
The extended temperature ranges of the Criterion series make testing at extreme conditions possible without buying a larger, stand alone chamber. Two chamber sizes are available, as well. The programmer includes a temperature alarm as just one part of ESPEC's three-tiered over-temperature protection system. A thermal fuse and a user-set independent limit are also included. In addition, a specimen power terminal allows the user to safely operate powered equipment inside or with the chamber. 
The conditioning components are laid out in a vertical configuration to save bench space. | 
The Criterion chambers respond quickly to setpoint changes. The BTZ-175 can | Features - High performance and quiet operation （65 dBa）
- Space-saving footprint, designed for flush installation to wall
- Stainless steel exterior and durable thermoformed plastic door
- Full thermal break around doorframe
- One 50mm （2"） diameter cable port on left, with flexible silicone plug
- Three levels of overheat protection
- Detachable eight-foot power cord with plug
WATLOW F4 PROGRAMMER/CONTROLLER - Popular PID controller for test chambers
- Stores 40 different profiles （total 256 steps）
- Step types include: ramp, soak, jump, auto-start, and end
- RS-232C Modbus interface （free standard software）
Criterion Temperature Benchtop Model Comparison | Model / Link | Interior Dimensions
（W x D x H） | Interior Volume | Temperature Range | Humidity Control | Change Rate
（heat/cool） | Notes | | | | | | | | | | HBTU-133 | 19.6" x 11" x 12" | 1.5 cu. ft. | -35 to 180°C | No | up to 1.5°C/min. | | | HBTZ-133 | 19.6" x 11" x 12" | 1.5 cu. ft. | -70 to 180°C | No | up to 3.5°C/min. | | | HBTZ-175 | 19.6" x 11" x 12" | 1.5 cu. ft. | -70 to 180°C | No | up to 5°C/min. | | | HBTZ-175E | 19.6" x 11" x 12" | 1.5 cu. ft. | -70 to 180°C | No | up to 5°C/min. | 230V 50Hz export model | | HBTU-433 | 19.6" x 15" x 23.6" | 4 cu. ft. | -20 to 180°C | No | up to 1.5°C/min. | Also available with humidity control | | HBTZ-475 | 19.6" x 15" x 23.6" | 4 cu. ft. | -70 to 180°C | No | up to 2.75°C/min. | Also available with humidity control | | Click model number for details, including metric & english units. | HBTU-133 Specifications | Item | Value | | Specifications are for reference only. Please contact ESPEC for detailed information. | | Product Family | Criterion Temperature Benchtop | | Interior Volume | 1.5 cu. ft.
42 Liters | | Interior Dimensions （W x D x H） | 19.6" x 11" x 12"
500 x 280 x 300 mm | | Exterior Dimensions （W x D x H） | 29" x 34" x 33"
740 x 850 x 840 mm | | Temperature Range | -35 to 180°C
-31 to 354°F | Average Change Rate
（rates lower with 50Hz power） | 1.5°C/min heat & 1.2°C/min cool
（-15 to 160°C empty chamber, per IEC 60068 3-5, at supply sensor） | | Power | 120V 11A max | | Maximum Sound Level （1 meter away） | 65 dBA | | “Price Rank” （Comparing to other models in this product category.
Lower Number = Lower Price） | #1 out of 19 ranked | HBTZ-133 Specifications | Item | Value | | Specifications are for reference only. Please contact ESPEC for detailed information. | | Product Family | Criterion Temperature Benchtop | | Interior Volume | 1.5 cu. ft.
42 Liters | | Interior Dimensions （W x D x H） | 19.6" x 11" x 12"
500 x 280 x 300 mm | | Exterior Dimensions （W x D x H） | 29" x 33.3" x 33"
740 x 850 x 840 mm | | Temperature Range | -70 to 180°C
-100 to 354°F | Average Change Rate
（rates lower with 50Hz power） | 3.5°C/min heat & 3°C/min cool
-45 to 155°C （Empty） | | Power | 115V 16A max | | Maximum Sound Level （1 meter away） | 65 dBA | | Temperature Fluctuation （at control sensor） | ±0.5 | | “Price Rank” （Comparing to other models in this product category.
Lower Number = Lower Price） | #2 out of 19 ranked | HBTZ-175 Specifications | Item | Value | | Specifications are for reference only. Please contact ESPEC for detailed information. | | Product Family | Criterion Temperature Benchtop | | Interior Volume | 1.5 cu. ft.
42 Liters | | Interior Dimensions （W x D x H） | 19.6" x 11" x 12"
500 x 280 x 300 mm | | Exterior Dimensions （W x D x H） | 29" x 33.3" x 33"
740 x 850 x 840 mm | | Temperature Range | -70 to 180°C
-100 to 354°F | Average Change Rate
（rates lower with 50Hz power） | 5°C/min
-45 to 155°C （Empty） | | Power | 208/230V 1ph 12A max | | Maximum Sound Level （1 meter away） | 65 dBA | | Temperature Fluctuation （at control sensor） | ±0.5 | | “Price Rank” （Comparing to other models in this product category.
Lower Number = Lower Price） | #3 out of 19 ranked | HBTZ-175E Specifications | Item | Value | | Specifications are for reference only. Please contact ESPEC for detailed information. | | Product Family | Criterion Temperature Benchtop | | Interior Volume | 1.5 cu. ft.
42 Liters | | Interior Dimensions （W x D x H） | 19.6" x 11" x 12"
500 x 280 x 300 mm | | Exterior Dimensions （W x D x H） | 29" x 33.3" x 34"
740 x 850 x 865 mm | | Temperature Range | -70 to 180°C
-100 to 354°F | Average Change Rate
（rates lower with 50Hz power） | 5°C/min
-45 to 155°C （Empty） | | Power | 230V 1ph 50Hz 12A max | | Maximum Sound Level （1 meter away） | 65 dBA | | Temperature Fluctuation （at control sensor） | ±0.5°C | | Temperature Gradient （Uniformity, empty） | ±2°C below 100°C | | Notes | 230V 50Hz export model | | “Price Rank” （Comparing to other models in this product category.
Lower Number = Lower Price） | #3 out of 19 ranked | HBTU-433 Specifications | Item | Value | | Specifications are for reference only. Please contact ESPEC for detailed information. | | Product Family | Criterion Temperature Benchtop | | Interior Volume | 4 cu. ft.
113 Liters | | Interior Dimensions （W x D x H） | 19.6" x 15" x 23.6"
498 x 380 x 600 mm | | Exterior Dimensions （W x D x H） | 29" x 33.35" x 45.6"
737 x 847 x 1159 mm | | Temperature Range | -20 to 180°C
-4 to 354°F | Average Change Rate
（rates lower with 50Hz power） | 1.5°C/min heat & 1.2°C/min cool
（Empty） | | Power | 120V | | Notes | Also available with humidity control | | “Price Rank” （Comparing to other models in this product category.
Lower Number = Lower Price） | #4 out of 19 ranked | HBTZ-475 Specifications | Item | Value | | Specifications are for reference only. Please contact ESPEC for detailed information. | | Product Family | Criterion Temperature Benchtop | | Interior Volume | 4 cu. ft.
113 Liters | | Interior Dimensions （W x D x H） | 19.6" x 15" x 23.6"
498 x 380 x 600 mm | | Exterior Dimensions （W x D x H） | 29" x 33.35" x 45.6"
737 x 847 x 1159 mm | | Temperature Range | -70 to 180°C
-100 to 354°F | Average Change Rate
（rates lower with 50Hz power） | 2.75°C/min heat & 2.5°C/min cool
（Empty） | | Power | 208/230V 1ph 12A max | | Temperature Fluctuation （at control sensor） | ±0.5 | | Notes | Also available with humidity control | | “Price Rank” （Comparing to other models in this product category.
Lower Number = Lower Price） | #8 out of 19 ranked | |
