D502/7D. D502/7DK Pressure Switches The pressure switches use bellows-type sensors. Shanghai ZhongHe Automation Instrumentation co., LTD. They can be used for neutral gases (such as air. Gas. water steam. etc) and liquid medium (such water. refrigerants. oil. etc) The set point of the pressure switch is adjustable. The adjustable range of set point is -0.1—4MPa. □ Main Technical Data Working Viscosity:<1×10-3m2/s. switching Element: micro-switch. Housing Protection Grade: IP65 (Accord with DIN40050 and corresponding to IP65 in GB4208) Ambient Temperature: -40 ~ +50℃. Medium Temperature: 0 ~ +120℃. Vibration Resistance: D502/7D:40m/s2; D502/7DK:20m/s2. Repeatability error: ≤1%. Contactor Capacity: AC 220V 6A (reaistance) (as for special requirements, you may refer to the Application Manual written by this factory) □ Features Suitable for vacuum Action procedure of the single-pole double throw micro-switch: The connecting terminals 1-3 will be connected when the pressure rises to the upper limit of the switching value; and the connecting terminals 1-2 will be disconnected when the pressure rises to the upper limit of the switching value. □ Specifications (D502/7D) ·Switching Difference is Non-adjustable: Adjustable Range of Set point MPa Switching Difference (Not Ureatar Than) Max. Allow-able Press-ure* MPa Number of Switch-ing Cycles 1/min Pressure Sensor Materials Processs-ing Connecti-on (External Thread) Weight Kg Outline Dimen-sions (Drawing Number) Order Number Lower Limit of Set Point range MPa Upper Limit of Set Point range MPa Housing Bellows -0.1~0 -0.1~0.1 -0.1~0.16 -0.1~0.25 0.006 0.007 0.008 0.009 0.007 0.008 0.009 0.012 1 1 1 1 20 Brass Stainese steel 00Gr17 Ni14 Mo2 (316L) G1/4 G1/4 G1/4 G1/4 1.0 1.0 1.0 1.0 01 01 01 01 0810100 0810200 0810300 0810400 0~0.1 0~0.16 0~0.25 0.007 0.008 0.009 0.008 0.009 0.01 1 1 1 G1/4 G1/4 G1/4 1.0 1.0 1.0 01 01 01 0811100 0811200 0811300 0.02~0.4 0.03~0.6 0.03~1 0.03 0.03 0.03 0.03 0.035 0.04 2 2 2 G1/4 G1/4 G1/4 0.85 0.85 0.85 02 02 02 0811400 0811500 0811600 0.05~1.6 0.05~4 0.07 0.07 0.08 0.09 5 5 G1/4 G1/4 0.9 0.9 03 03 0811700 0811800 ·Switching Difference is adjustable: (D502/7D) Adjustable Range of Set point MPa Switching Difference (Not Ureatar Than) Max. Allow-able Press-ure* MPa Number of Switch-ing Cycles 1/min Pressure Sensor Materials Processs-ing Connecti-on (External Thread) Weight Kg Outline Dimen-sions (Drawing Number) Order Number Lower Limit of Set Point range MPa Upper Limit of Set Point range MPa Housing Bellows -0.1~0 -0.1~0.1 -0.1~0.16 -0.1~0.25 0.018~0.08 0.019~0.1 0.02~0.2 0.022~0.25 0.019~0.08 0.021~0.1 0.022~0.2 0.024~0.25 1 1 1 1 20 Brass Stainese steel 00Gr17 Ni14 Mo2 (316L) G1/4 G1/4 G1/4 G1/4 1.05 1.05 1.05 1.05 01 01 01 01 0800100 0800200 0800300 0800400 0~0.1 0~0.16 0~0.25 0.015~0.08 0.018~0.1 0.02~0.2 0.016~0.08 0.02~0.1 0.024~0.2 1 1 1 G1/4 G1/4 G1/4 1.05 1.05 1.05 01 01 01 0801100 0801200 0801300 0.02~0.4 0.03~0.6 0.03~1 0.08~0.25 0.08~0.5 0.09~0.8 0.08~0.25 0.09~0.5 0.1~0.8 2 2 2 G1/4 G1/4 G1/4 0.9 0.9 0.9 02 02 02 0801400 0801500 0801600 0.05~1.6 0.05~4 0.17~1.2 0.18~2 0.19~1.2 0.2~2 5 5 G1/4 G1/4 0.95 0.95 03 03 0801700 0801800