TPK electrocontact thermometers GOST 9871-75
They are used to maintain a constant (set) temperature in industrial, laboratory, power and other installations.
| Name | vendor code | L top h, mm | l lower h, mm | Execution | Measurement range t, 0C | Case price. sc., 0 С | thermometric liquid |
| Thermometer TPK electro-contact direct | 100073 | 355 | 103 | 2 | -35... + 7 0 | -1- | mercury |
| 100074 | 163 |
| 100075 | 253 |
| 100076 | 83 | 3 | 0 … +100 | -1- |
| 100077 | 103 |
| 100078 | 163 |
| 100079 | 253 |
| 100081 | 103 | 4 | 0 … +150 | -2- |
| 100083 | 163 |
| 100085 | 253 |
| 100086 | 103 | 5 | 0 … +200 | -2- |
| 100087 | 163 |
| 100088 | 253 |
| 100092 | 103 | 7 | 0 … +300 | -5- |
| 100093 | 163 |
| 100095 | 253 |
| Thermometer TPK electro-contact angular | 100099 | 355 | 104 | 3 | 0 … +100 | -1- | mercury |
| 100100 | 141 |
| 100101 | 104 | 5 | 0 … +200 | -2- |
| 100102 | 141 |
| 100103 | 104 | 7 | 0 … +300 | -5- |
| 100104 | 141 |
Principle of work : The electrocontact thermometer TPK works in a sparkless mode; must have an amplifying device. The thermometer is manufactured with a movable working contact. The thermometer is connected to direct and alternating current circuits with a frequency of up to 50 Hz. Has two scales. The upper scale is used to set the thermometer to the desired temperature. The adjustment is made by rotating the magnetic device, thereby setting the end of the tungsten filament at the mark of the set temperature. The lower scale serves to control the temperature of the measured medium.
Designation example: Thermometer TPK-2P (-35+70 °С)-1/103 GOST 9871-75
