YLS-12A rat tail light pain measurement instrument I. Introduction illumination method is also called photothermal flick flick flick method or radiant heat method, the basic principle is to produce a beam of light exposure to the focusing effect on the tail, so that the tail Local heating produce pain, when more than animals endure the pain threshold to produce an effective animal escape flick, this method to determine changes in the level and method of animal pain threshold method called light flick. Our own development and production of YLS-12A rat tail light measuring pain instrument has the following characteristics: First, NC FM so stable light intensity, adjustable; two, after a bar-infrared light irradiation treatment on the rise even in the tail; three, timing accuracy up to 0.01 seconds; four, fitted with vertical mouse, so big, mouse tail easy positioning; five, manual and automatic photoelectric mind when Hutchison optional; six, built-in mini-printer. Second, the major technical indicators instrument applicable to large, light a mouse tail flick test. The instrument uses infrared strip spot; 2. Light power range: 25.5W-33W, 16-level setting, adjust the step size for 1W; 3. The maximum exposure time is 16 seconds (to avoid the tail burns); 4. Timing the smallest unit of 0.01 seconds; 5. Optical two kinds of manual or optional timer mode; 6. Located within the electric clock run continuously for 10 years, no time to adjust; 7. The printer comes with mini two printing method (storage and instant print print); 8. With computer data interface and data communication program; 9. Instrument memory 10 sets of data, each 100 data; 10. The instrument is equipped with a large, fixed creel each set of mice (five mice drum set, drum two rats a); 11. Input voltage: AC 220V ± 5%; 12. Maximum input power: 50W; 13. Instrument Dimensions: 335 × 230 × 120mm; 14. Weight: 3.5kg ZH-LUO / B light and heat measuring instrument is Huaibei pain biological Equipment Co., Ltd. is China independently developed for pharmacological studies of analgesic drugs in experimental research instruments. The instrument is a classic analgesic drug experimentation - radiant heat stimulation method used in typical devices. I produced the ZH-LUO / number B explicitly programmed light and heat pain measurement instrument suitable for large, tail mice \ grasping tests. Specifications: Host Dimension: 260mmX120mmX220mm; Weight: 2.5kg use: connect the wires and turn on the power, press the Set button, with the rising and setting the right key heating temperature, press the Set button to store, later on, set This value is still given temperature. After setting the temperature, you can do so on a few minutes after the preheat temperature reaches the set value experiment. To print and communication, you also need to print lines and even lines of communication, and set the year, month, day, is: press the right key, 01 years, 02 months, 03 days, 04 too, 05 points, with the rise in the key set up the date, press the Set button to end. Press the timer button to start the experiment, then stop the clock timer key to end the experiment, then the experimental results will be printed out, and to a computer to transfer data. Press the Print button can be repeated again. Automatic detection function, in the experimental condition, when the rat tail flick heat, the instrument automatically stop the clock, the end of the experiment