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Description
Julabo CF Cryo-Compact Circulators 3.5 LiterOverview The new CF series offers compact refrigerated heating circulators. With small overall dimensions the units can even be placed on a very small surface or within a complex installation. All models offer a heating capacity of 2 kW and safety class 3 according to DIN12876 1. The maximum ambient temperature of +40C as well as ventilation air cooling allow installing the units very closely side by side with other units or directly under a fume
Overview
The new CF series offers compact refrigerated/heating circulators. With small overall dimensions the units can even be placed on a very small surface or within a complex installation. All models offer a heating capacity of 2 kW and safety class 3 according to DIN12876-1. The maximum ambient temperature of +40°C as well as ventilation air cooling allow installing the units very closely side by side with other units or directly under a fume hood. Furthermore all the models feature pump connections for external temperature applications and a bath opening for temperature control of small objects directly in the circulator bath. Wetted parts are made of high quality stainless steel or plastic. The instruments provide reliable Microprocessor electronics with high temperature stability as well as warning and safety functions.
Features:
- Ergonomic design and easy operation
- Small overall dimensions for lowest space requirement
- Splash-proof keypad
- RS232 interface for PC connection
- Adjustable high temperature cut-off
- Classification 3 according to DIN12876-1
- Pump connections for external temperature applications
- Bath opening for temperature control of small objects in the bath
- Front drain
High-tech model offers additional features that allow more precise control than economy models:
- Bright VFD display and additional interactive LCD dialog display of 3 values,warning functions, high
temperature cut-off, pump stages (resolution 0.01 °C)
- Highly precise 'Intelligent Cascade Control', automatic and self optimizing adjustment of PID control parameters
- TCF Temperature Control Features for individual optimization, additional settings for band limit, limits etc
- Absolute temperature Calibration for manual compensation of a temperature difference, 3-point calibration
- Electronically adjustable pump stages for reliable and consistent pump capacity
- Integrated programmer for the execution of time and temperature dependent profiles, 6 temp profiles with 60 steps max., with real time clock
- External Pt100 sensor connection for precise measurement
- Early warning system for low liquid level for maximum safety and for high/low temperature limits
- 3-point calibration
- RS232/RS485 interface for PC connection
Key Attributes
| Type | Stirred / Circulating Baths |
| Incubation | Yes |
| Refrigeration | Yes |
| Temp Range (°C) | Ambient -30 to 200 |
| Capacity (L) | 3.5 |
| Circulation | Internal & External |
| Brand | Julabo |
| MaxFlow Rate (l/min) | 15, 22-26 |
| Temp Stability (°C) | ±0.03, ±0.02 |
| Timer | Yes |
| Alarms | Yes |
| Digital or Mechanical | Digital |
| Data connection | Yes |
| Tank Material | Stainless Steel |
| Sample Agitation | No |
| Media Racks Available | No |
| Warranty (years) | 1 |
| Weight (lb) | 79 |
| Width (in) | 9.4 |
| Depth (in) | 18.1 |
| Height (in) | 15.7 |
Manufacturer Specifications
| Model No. | CF30 | CF31 |
| Model series | Economy | HighTech |
| Model # | CF30 | CF31 |
| Working temperature range (°C) | -30 ... +150 | -30 ... +200 |
| Temperature stability (°C) | ±0.03 | ±0.02 |
| Setting / display resolution | 0.1 °C | 0.01 °C |
| Integrated programmer | N/A | 6x60 steps |
| Temperature Display | LED | VFD , LCD |
| Heating capacity (kW) | 1 | 1 |
| Cooling capacity (Medium Ethanol)°C | 20, 0, -20 | 20, 0, -20 |
| Cooling capacity (Medium Ethanol) kW | 0.32, 0.25, 0.15 | 0.32, 0.25, 0.15 |
| Pump capacity flow rate (l/min) | 15 | 22-26 |
| Pump capacity flow pressure (psi) | 5.1 | 5.8-10.2 |
| Pump capacity flow suction (psi) | N/A | 2.9-5.8 |
| Bath opening / bath depth (W x L / D inch) | 6.3 x 1.2 / 5.5 | 6.3 x 1.2 / 5.5 |
| Pump connections | M16x1 | M16x1 |
| Barbed fittings diameter (inner dia. / mm) | 8 / 12 | 8 / 12 |
| Filling volume (liters) | 3.5 | 3.5 |
| Refrigerant | R134a | R134a |
| External Pt100 sensor connection | N/A | integrated |
| Digital interfaces | RS232, Optional Profibus | RS232, RS 485, Optional Profibus |
| Ambient temperature | 5...40 °C | 5...40 °C |
| Dimensions W x L x H (inch) | 9.4 x 18.1 x 15.7 | 9.4 x 18.1 x 15.7 |
| Weight (LBS) | 77 | 79 |
| Classification according to DIN12876-1 | Classification III (FL) | Classification III (FL) |
| Included with each unit | 2 each barbed fittings for tubing 8 and 12 mm inner dia. (pump connections M16x1 female). | 2 each barbed fittings for tubing 8 and 12 mm inner dia. (pump connections M16x1 female). |
| Cooling of compressor | Air | Air |
| Power requirement V / Hz / A | 115/60/13 Additional voltage versions available | 115/60/14 Additional voltage versions available |
Shipping Notes
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Exchange/Return Notes
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4.9 ★★★★★
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★★★★★ 5
Excellent customer service
Format: Paperback
Totally recommendable.
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Reviewed in the United States on August 26, 2019
★★★★★ 5
Five Stars
Format: Paperback
This helped a lot for us to prepare for the SLATE exam.
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Reviewed in the United States on August 23, 2016
★★★★★ 5
Good
Format: Paperback
This is great! I like this one.
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Reviewed in the United States on June 22, 2016
★★★★★ 2
Good to have if you've never seen the iTEP exam, but don't rely on it to boost your scores
Format: Paperback
This book is good in that it comes with two practice tests: one in the beginning of the book, one in the end of the book. The grading rubric is helpful too. However, the actual guide part of the book, doesn't help too much with how to improve test scores. What I like least about this guide is that it won't tell you which questions you answered incorrectly on the practice exams. A good test prep guide will tell you what you answered incorrectly, and will tell you what logic to follow to get to the correct answer. In the reading passages, it would be nice to know where I can find evidence to justify the "correct" answer. In the grammar section, it would be nice to know which rule I'm violating. Any test guide should always come with some testing strategies. I.E. If this question is taking up too much time, skip it and go to the next one. This guide lacks simple strategies like that. Simple strategies like that could be useful when incorporated into this guide because there are certain sections on the exam that you can go back to previous questions, but some sections where the "back" button is disabled.
Overall, if you've never seen an iTEP exam before, this book is certainly helpful in that it will give you an idea of what you will be testing for. However, this book alone won't help you achieve a score of 6. The table of contents itself will tell you there are only 86 pages of actual content covering test material. That's not enough to cover how to excel in the exam.
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Reviewed in the United States on January 27, 2015
★★★★★ 1
Don't buy it
Format: Paperback
It does not prepare for the real test.
Using it is absolutely not enough to be approved with good grades.
Too expensive for what it offers.
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Reviewed in the United States on October 21, 2016