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| slice:qt [2019/09/18 13:18] – [Specifications] Michael Radunsky | slice:qt [2020/07/15 16:25] – [System Settings] Michael Radunsky |
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| ===== Proper Usage ===== | ===== Proper Usage ===== |
| | {{ :warning-sign.png?100&nolink }} | If this instrument is used in a manner not specified by the manufacturer in this manual or other relevant literature, protection provided by the instrument may be impaired. | | | {{ :warning-sign.png?100&nolink }} | If this instrument is used in a manner not specified by the manufacturer in this manual or other relevant literature, protection provided by the instrument may be impaired. | |
| | |:::| Successful implementation of the SLICE-QTC depends critically on the design of the whole system: controller, transducer, plant, and sensor. | |
| | |
| | ==== Tips for Successful Temperature Regulation ==== |
| | - The transducer, plant, and sensor must all be in good thermal contact. Use thermal paste or epoxy to avoid air gaps between a TEC or heater and the body of the plant as well as to secure the thermistor to the plant. |
| | - Know the electrical limits of of your transducer and set the limits of the SLICE-QTC accordingly. Each channel can provide up to 6 A or 20 W of power with a maximum compliance voltage up to ~18 V. Choose transducers that work within these limits. Using the current, power, and/or voltage ratings of your transducer to calculate loads on individual channels and set limits appropriately in the CH X > Settings > Load Limits window. |
| | - Maintain proper shielding of the control cable, but avoid ground loops between the SLICE-QTC and the plant. In most cases this means extending the foil shield in the cable to as close as possible to the plant without electrically connecting the SLICE-QTC to the plant. |
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| ===== List of Symbols ===== | ===== List of Symbols ===== |
| | Compatible Transducer | TEC or resistive heater | | | Compatible Transducer | TEC or resistive heater | |
| | Compatible Sensor | NTC thermistor ((Nominal value 10 kΩ at room temperature. Precision at temperatures removed from room temperature can be improved by selecting a thermistor whose resistance is ~10 kΩ near the target temperature.)) | | | Compatible Sensor | NTC thermistor ((Nominal value 10 kΩ at room temperature. Precision at temperatures removed from room temperature can be improved by selecting a thermistor whose resistance is ~10 kΩ near the target temperature.)) | |
| | Temperature Stability | ±0.2 mK over 1 hour((Plant-dependent; value specified for D2-100 laser)) | | | Temperature Stability | ±0.2 mK over 10 min((Plant-dependent; value specified for D2-100 laser)) | |
| | Precision | ~1 mK | | | Precision | ~1 mK | |
| | Control Capacity | 40 W total((User-distributable over four channels)) \\ 20 W max for a single channel | | | Control Capacity | 40 W total((User-distributable over four channels)) \\ 20 W max for a single channel | |
| The User can limit the control power available to individual channels. To adjust control capacity from the Home screen, select CH X > Settings > Load Limits and the screen shown in <imgref power> will appear. | The User can limit the control power available to individual channels. To adjust control capacity from the Home screen, select CH X > Settings > Load Limits and the screen shown in <imgref power> will appear. |
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| <imgcaption power|Screen for adjustment of control power capacity>{{ :slice:slice-qt_load_limits_screen.jpg?400x254 |}}</imgcaption> | <imgcaption power|Screen for adjustment of control power capacity>{{ :slice:slice-qt_load_limits_screen.png?400x254 |}}</imgcaption> |
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| === Transducer and Thermistor === | === Transducer and Thermistor === |
| Current firmware versions are reported here. | Current firmware versions are reported here. |
| |
| <WRAP center round box 60%><tabcaption firmware_rev |Most recent firmware versions as of 6 June 2019> | <WRAP center round box 60%><tabcaption firmware_rev |Most recent firmware versions as of July 2020> |
| | Firmware | Version Level | Release Date | | | Firmware | Version Level | Release Date | |
| | System Controller| 1.24| 23 May 2019| | | System Controller | 1.77 | March 2020 | |
| | QTC| 1.38| 23 May 2019| | | QTC | 1.50 | March 2020 | |
| </tabcaption></WRAP> | </tabcaption></WRAP> |
| From time to time, Vescent will upgrade the firmware for controlling the SLICE-QTC. The procedure to upgrade the firmware is given [[slice:qt:firmware|here]]. | From time to time, Vescent will upgrade the firmware for controlling the SLICE-QTC. The procedure to upgrade the firmware is given [[slice:qt:firmware|here]]. |
