DR703 Mechanical Pressure Switch
DR703 Mechanical Pressure Switch
The DR703 pressure switch built-in piston connect to a precision spring. the mechanical deformation changes is according to the pressure changes. when the pressure reaches the set point, the preset pressure structure will be triggered and the switch signal will be sent out. it is suitable for water, oil, gas pressure measurement .
Applications
- Petroleum, chemical, electric power
- Glass, rubber
- Textile industry
Features
- Return differential pressure setting
- Wide measuring range, overload pressure up to 1000bar
- Large contact capacity with NO and NC contacts
- Standard connection plug in
Technical Specs
| Measurement range | 1bar…50bar | Max Voltage | 250VAC/24VDC |
| Medium type | Gas, water, oil, pure liquid | Max Current | 4A |
| Maximum working pressure | 150bar | Housing | stainless steel or galvanized steel |
| Burst Pressure | 300bar | Diaphragm | NBR, FKM, EPDM, HNBR |
| Pressure accuracy | ±0.3bar, ±0.5bar, ±1bar, ±2bar | Pressure interface | G1/8, NPT1/8, M10*1, UNF7/16, G1/4, NPT1/4, G1/2 |
| Electric touch | Silver and cadmium, gilded | Protection level | IP65 |
Ordering Guide
| DR703 | Mechanical Pressure Switch | ||||||
| Range | 1bar…50bar | ||||||
| [0～X]bar | X: the actual measured pressure | ||||||
| Code | Switch Mode | ||||||
| F1 | ON | ||||||
| F2 | OFF | ||||||
| Construction material | |||||||
| Code | Diaphragm | ||||||
| D1 | NBR | ||||||
| D2 | FKM | ||||||
| D3 | EPDM | ||||||
| D4 | HNBR | ||||||
| Code | Housing | ||||||
| E1 | Stainless steel | ||||||
| E2 | Galvanized steel | ||||||
| Code | Accuracy | ||||||
| H1 | ±0.3bar | ||||||
| H2 | ±0.5bar | ||||||
| H3 | ±1bar | ||||||
| H4 | ±2bar | ||||||
| Code | Tread | ||||||
| C1 | G1/8 | ||||||
| C2 | NPT1/8 | ||||||
| C3 | M10*1 | ||||||
| C4 | UNF7/16 | ||||||
| C5 | G1/4 | ||||||
| C6 | NPT1/4 | ||||||
| C7 | G1/2 | ||||||
| DR703- | [0~1]bar | R1 | M1 | B1C5G | H1 | C3 | The whole spec |
Outline Construction (Unit: mm)
FAQ
What is a mechanical pressure switch?
With a mechanical pressure switch, the setting pressure is reached and the switch is actuated, the switch will send an electrical signal. Therefore, it needs no supply voltage. The resulting reliability is one of the advantages of mechanical pressure switches. Fandesensor pressure switches are fitted with high-quality microswitches. They feature high long-term stability and precision. .
Which pressure switch has the longest lifespan??
Typically, diaphragm actuated switches have the highest cycle life, followed by piston and then bellows.
What is switch chatter?
Switch chatter is the major cause of switch contact burnout. If the Hysteresis setting is too small, a switch will continually turns on and off for only minimal changes in the process input pressure. This is to be avoided as much as possible as it will shorten the life of a pressure switch.