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Model Name |
ConST870 intelligent pressure controller |
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Order Code |
870-LP |
870-D |
870-7M |
870-25M |
Oil: 870-70M Water: 870-W-70M |
Oil: 870-100M Water: 870-W-100M |
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Maximum control pressure range① |
(-95~100)kPa |
(-99~250)kPa |
(-0.099~7)MPa |
(-0.099~25)MPa |
(0~70)MPa |
(0~100)MPa |
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Type of foundation pressure |
Differential pressure |
Differential pressure |
Gauge pressure |
Gauge pressure |
Gauge pressure |
Gauge pressure |
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Working medium② |
Gas |
Gas |
Gas |
Gas |
Liquid |
Liquid |
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CDPA Control Pressure Module (High Pressure Slot) |
Optional 10kPa ~ 100kPa |
Optional 10kPa ~ 250kPa |
Optional⑧ 400kPa ~ 7MPa |
Optional 10MPa ~ 25MPa |
Optional 25MPa ~ 70MPa |
Optional 25MPa ~ 100MPa |
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CDPA Control Pressure Module (Low Pressure Slot) |
Minimum Optional ± 250Pa |
Minimum Optional ± 2.5kPa |
Minimum Optional ± 60kPa |
Minimum Optional 1MPa |
Not applicable |
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External CDP Pressure Module |
Measurement only |
Controllable pressure, minimum optional 6MPa |
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Switch between gauge and absolute pressure |
Have (optional CDPA atmospheric pressure module) |
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Control mode |
Fast, standard, custom |
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Maximum load volume③ |
500mL |
1000mL |
1000mL |
100mL |
80mL④ |
60mL④ |
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Control response time⑤ |
<10s |
<30s |
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Control stability⑥ |
≤ 0.003%FS or 0.05Pa, take the larger one. |
≤0.003%FS Typical ≤ 0.001%FS |
≤0.003%FS Typical ≤ 0.001%FS |
≤0.003%FS Typical <0.001%FS |
≤0.005%FS Typical ≤ 0.003%FS |
≤0.005%FS Typical ≤ 0.003%FS |
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Target pressure stabilization time. |
> 5min |
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Pressure source type |
Built-in air source |
External air source |
External air source |
External air source |
Built-in hydraulic power |
Built-in hydraulic power |
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Maximum source pressure⑦ |
Not applicable |
400kPa |
8MPa |
28MPa |
Not applicable |
Not applicable |
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Pressure interface |
Outside G1/4 |
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Interface Filter |
(40~100)μm |
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①The minimum vacuum is based on an atmospheric pressure of 100 kPa.a;
②Gas refers to clean and dry xenon or air; wave refers to diisooctyl sebacate or purified water;
③The volume of the built-in liquid storage tank of the hydraulic version is 800mL;
④The hydraulic version can increase the load volume to 250mL through the optional external load expander;
⑤Test conditions for pneumatic version: external load volume 50mL, 20% stepping, reaching 0.005%FS stability; Hydraulic version test conditions: external load volume 10mL, 20% stepping, reaching 0.005%FS stability;
⑥When the typical control stability is reached, the control response time will be extended.
⑦It is recommended that the air source be equipped with appropriate pressure reducer to ensure safety. It is recommended that the air source pressure be adjusted to 110 or 100kPa of the maximum pressure of the pressure control module, take the larger one;
⑧870-7M and 870-7M versions, the maximum high-low range ratio of the pressure control module is 20:1.


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