Operating Diagram
Product Description CTD35T differential pressure switch is also called oil pressure safety control, it is designed for protection of larger compressors used with oil pumps. It measures oil pressure differential between two loops: suction loop and outlet loop, if pressure differential is lower than preset value, it means there is not enough oil forced through holes in the crankshaft. Compressors runs without enough oil for a long time will cause degradation or damage. There is a time-delay switch built in CTD35T, this allows compressors to build up oil pressure within scheduled time. Time-day switch has two types: 60 seconds and 90 seconds.
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Features
1. Ultra-short bounce time (10~15 microsecond) of snap-action performance (reduces wear to a minimum and increases reliability)
2. Vibration and shock resistance of 20~1000 HZ at 4g
3. Compact design, easy installation for on/off control without power (connect directly to final control element)
4. connected directly to a single-phase AC motor of up to 2 KW or installed in the control circuit of DC motors and large AC motors.
5. Fully welded bellows element, long lifetime (150K cycles)
6. High reliability both electrically and mechanically
7. Stainless steel wetted models are available
Specification(Unit: bar)
Model |
Differential adjust range |
Switch Deadband |
Factory setting |
Delay Time |
Max. working pressure |
|
min | max | |||||
CTD35T | 0.5 | 4 | ≤0.4 | 1 | 60/90s | 16.5 |
CTD35TH | 0.5 | 4 | ≤0.4 | 1 | 60/90s | 33 |
Electric Rating
Rated Amps(A)\Rated Voltage(V) | 125V A.C | 250V A.C | 24V D.C | |
Non-Inductive Current | 20A | 10A | 10A | |
Inductive Current | Full Load Current | 15A | 8A | 8A |
Locked roter | 72A | 64A |
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