▼ Product Overview
IP8081/IP8181 intelligent electric valve positioner is an intelligent two-wire field instrument. It is a high-performance electric valve positioner based on microprocessor technology. It can overcome friction and unbalanced force on the valve core, improve the response speed of the regulating valve, and make it position quickly and accurately. It has the functions of changing the control type, setting the split-range control, setting the tight closing function, changing the valve travel distance, adjusting the packing friction coefficient, setting the valve type and 4-20mA valve position feedback. It is used in conjunction with the traditional mechanical electric valve positioner, making the installation and commissioning of the valve positioner more convenient, the maintenance cost lower, and the control accuracy higher.
▼ Features
①High positioning accuracy, up to 0.5%FS;
②Easy to operate, generally only one button is needed to complete the setting;
③It has explosion-proof function and its performance is safe and reliable;
④Automatic adjustment and automatic diagnosis;
⑤Good seismic performance;
⑥After long-term use, there will be no zero drift problem like mechanical positioners;
⑦Low power consumption and low cost operation; ⑧Adopt two-wire 4~20mA standard signal.
▼ Parameters
| project | Single acting | Double acting |
| Basic error | 1% | ±2% |
| Hysteresis | 1% | 2% |
| Dead Zone | 0.4% | 0.8% |
| Rated travel | 0~(10-100)mm[angular travel (rotational travel) 0-(50"--90*)] | |
| Minimum operating current | 3.8MA.DC | |
| Voltage | 9-36W.DC | |
| Maximum supply power | 0.2W | |
| Air source pressure | 0.14-0.7MPa | |
| Input signal | 4-20mA.DC (conventional) three-wire | |
| Output pressure | 0.02 -0.5WPa | |
| Gas consumption | 5L/min(for(0.14MPa) | L/min (for 0.7MPa) |
| Output Characteristics | Linear | |
| Ambient temperature | Normal temperature type: -20C~+60C | |
| Relative humidity | 5%-100% | |
| Explosion-proof type (level) | Isolation type (ExdIICT6Gb) | |
| Input Impedance | 4--20mA.DC/5002 (20mA) | |
| Air source interface | ZGI/4 (conventional), NPT//4, G1/4 | |
| Power interface | NPTI/2 (conventional), G1/2, M20X 1.5 | |
| Appearance Material | Aluminum alloy spraying process | |
| Dimensions | Explosion-proof type: 266 X 145 X 110 (mm) (length X width X height) | |
| Standard type: 218 X 162 X 106 (mm) (length X width X height) | ||
| weight | Mother-proof type, about 3.3kg, ordinary type: about 2.3kg | |
