Thermometer alarm threshold settings and common temperature measurement false alarms
Can the alarm threshold value of the thermometer be set, and what is the trigger result?
Alarm reminder of the temperature measurement system, you need to set an alarm threshold value, the size of the trigger value can be set, triggered, you can call the software built-in sound prompts, or can be recorded on-site sound as a reminder; can also be displayed in the operating terminal in the state of the alarm captured in the picture of the suspected feverish personnel, and saved in the appropriate file directory for later verification; the specific operation of its specifications, such as the software setup instructions.
False alarms caused by common problems.
Temperature measurement system in actual use, temperature measurement system because there is no reasonable temperature measurement area, by the environment, such as: air conditioning blowing, direct sunlight, mirror reflections, etc., which may lead to temperature jumps and alarms; or in the area of the paddling detection, the background of the person holding a cigarette butt, hot water cups, other hot objects, heat objects, etc., which may lead to alarms; the actual use of the misinformation must be aware of the problem to check the type.
Precision digital pyrometer common calibration methods
Precision digital pyrometer usually uses platinum resistance as a temperature-sensing element, this kind of precision digital pyrometer with the corresponding platinum resistance sensors to replace the standard mercury thermometer is the international trend, so the study of its calibration method is very necessary.
Resistance measurement calibration method calibration method
First, the preparatory work before calibration
If the pyrometer has a calibration function, before power on the working mode will be set to calibration mode, and then will be in the constant temperature bath constant temperature of the first-class standard resistance according to the range of the pyrometer were connected to the pyrometer, and then power on the pyrometer to be stabilized will be the value of the standard resistance calibration certificate entered into the pyrometer, stabilized after the shutdown; will be the working mode of the pyrometer is set to the measurement mode, power on and ready to calibrate. Power on and will be platinum resistance thermometer certificate of the relevant data entered and stored as required.
Second, the choice of calibration point
General selection of 25Ω, 100Ω measurement point, according to the need to select other measurement values.
Calibration
According to the range of the pyrometer will be the standard resistance were connected to the pyrometer, to be stabilized by the pyrometer to read the resistance value of the pyrometer.
Calibration method
With fixed-point method or comparison method. Calibration with the comparative method, the standard platinum resistance thermometer and the calibrated pyrometer sensor inserted into the constant temperature bath, to be temperature stabilization after the start of the standard thermometer and the calibrated pyrometer readings, the interval of 1 to 2 minutes and then read a total of 2 times before and after.
