- Details
- Category: Low Temperature Equipment
- Hits: 27
| Overview | |
Low Temperature Equipment
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Related Products
- Details
- Category: Low Temperature Equipment
- Hits: 63
Low Temperature Equipment
WissEl offers a variety of cryogenic equipment for Mossbauer spectroscopy at low temperatures.
| Product | He/N2 Bath Cryostat | N2 Bath Cryostat | TR-50 |  TR-55 |
Dewar for He | Dewar for N2 |
|---|---|---|---|---|---|---|
| Type | Bath Cryostat | Bath Cryostat | Temp Controller | Temp Controller | Dewar Vessel | Dewar Vessel |
| Temperature | 4K - 300K | 77K - 300K | Controller | Controller | 4.2K | 77K |
- Details
- Category: Low Temperature Equipment
- Hits: 30
MBBC-HE0106 Mössbauer He/N2 Cryostat
The Bath Cryostat MBBC-HE0106 is designed for low-temperature Mössbauer spectroscopy with the Mössbauer source at ambient temperature. The cryostat is entirely made of stainless steel. A silicon diode DT-670 inside the cryostat is used as temperature sensor for the temperature controller TR-50.
Features
- Liquid helium and liquid nitrogen operation
- Temperature range from 2.2 K (He) or 56 K (N2) by pumping down up to 330 K
- Temperature gradients less than 0.3 K (sample in He or N2 atmosphere)
- Long stand times due to low cooling liquid consumption (e.g. He ~ 0.164 l/h)
- Top-loading Mössbauer cryostat
- Easy sample change in cold condition
- Sample holder with a cylindrical hole of Ø = 20 mm for sample insert
Technical Specifications
| Technical Characteristics (standard version) | |
|---|---|
| Temperature range | He: 2.2 K (by pumping off He gas) - 330 K N2: 56 K (by pumping off N2 gas) - 330 K |
| Temperature stability | ≤ 0.3 K |
| Temperature gradient | ≤ 0.3 K |
| LN2 Volume | 8.4 l |
| LHe Volume | 5.1 l |
| LN2 stand time | 7 days (filling helium bath and nitrogen bath with nitrogen) |
| LHe stand time | 24 h (in unheated condition at LHe temperature) |
| γ-radiation absorption by Windows | < 1% |
| Materials | |
| Cryostat body | Stainless steel |
| Windows | Mylar |
| Sample holder | Copper |
| Physical | |
| Diameter of Mössbauer absorber | 20 mm |
| Distance between outer windows | 40 mm |
| Length of cryostat | 900 mm |
| Diameter of cryostat | 255 mm |
| Weight | 30 kg |
| Special Versions (longer stand times) | |
| 31 h stand time | 950 mm length, 6.5 l LHe |
| 38 h stand time | 1000 mm length, 8.0 l LHe |
| 45 h stand time | 1050 mm length, 9.5 l LHe |
- Details
- Category: Low Temperature Equipment
- Hits: 27
MBBC-N20106 Mössbauer N2 Cryostat
The Bath Cryostat MBBC-N20106 is designed for low-temperature Mössbauer spectroscopy with the Mössbauer source at ambient temperature. The cryostat is entirely made of stainless steel. A silicon diode DT-670 inside the cryostat is used as temperature sensor for the temperature controller TR-50.
Features
- Liquid nitrogen operation
- Temperature range from 56 K (by pumping off N2 gas) up to 330 K
- Temperature gradients less than 0.3 K (sample in N2 atmosphere)
- Long stand times due to low cooling liquid consumption
- Top-loading Mössbauer cryostat
- Easy sample change in cold condition
- Sample holder with a cylindrical hole of Ø = 20 mm for sample insert
Technical Specifications
| Technical Characteristics (standard version) | |
|---|---|
| Temperature range | 56 K (by pumping off N2 gas) - 330 K |
| Temperature stability | ≤ 0.3 K |
| Temperature gradient | ≤ 0.3 K |
| LN2 Volume | 18 l |
| LN2 stand time | 15 days (in unheated condition at LN2 temperature) |
| γ-radiation absorption by Windows | < 1% |
| Materials | |
| Cryostat body | Stainless steel |
| Windows | Mylar |
| Sample holder | Copper |
| Physical | |
| Diameter of Mössbauer absorber | 20 mm |
| Distance between outer windows | 42 mm |
| Length of cryostat | 900 mm |
| Diameter of cryostat | 255 mm |
| Weight | 25 kg |
Specifications of special cryostats are available on request.
- Details
- Category: Low Temperature Equipment
- Hits: 26
TR-50 Temperature Controller
The temperature controller TR-50 is designed for controlling the temperature of samples in the Mössbauer cryostats MBBC-HE0106 and MBBC-N20106. A silicon diode DT-670 inside the cryostat is used as temperature sensor.
Features
- Minimum programmable temperature: 1.4 K
- Maximum temperature approx. 350 K depending on technical features of the used cryostat
- Four-wire connection to the sensor diode for precise temperature measurement
- Short thermal response time of the silicon diode due to small physical size
- DC output for the heating device
- Built-in temperature control module EUROTHERM 3216 with many programmable functions
- Setting temperature control parameters via push buttons at the front panel
- Remote control by optional software via RS 232C serial interface
Technical Specifications
| Input | |
|---|---|
| From temperature sensor | < 1.75 V at constant excitation current of 10 μA depending on temperature |
| Output | |
| To heater | Max. 25 V 800 mA |
| Connectors | |
| POWER | Mains connection with 2 A slow fuse at rear panel |
| CRYOSTAT | 9-pin D-SUB connector for temperature sensor and heater |
| REMOTE CONTROL | RS 232C serial interface |
| Indicators | |
| LCD display | Three color LCD display for process variables with scrolling plain text |
| Controls | |
| POWER | Front panel toggle switch for on/off |
| EUROTHERM module | 4 pushbuttons for programming temperature control parameters |
| Physical | |
| Housing | 2 U - 19" metal housing (rack mounting set optional) |
| Dimensions | 445 × 240 mm (290 mm with handles) × 86 mm (100 mm with feet) |
| Weight | Approx. 6 kg |
| Power Requirements | |
| Input Power | 100-250 VAC |
| Power consumption | < 100 VA |