POWERFLOW CONTROL CO,. LTD.
Hangzhou Powerflow Technology Co., Ltd. Expertise in Flow Control.
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1. Product Description
The YT-1000 series Electro-pneumatic Valve Positioner can precisely control valve stroke according to a signal of 4~20mA from the controller. This series includes YT-1000R (rotary positioner) and YT-1000L( linear positioner) .
2.Technical Datas
| Enclosure Material | Aluminum Diecasting |
| Set-point Signal | 4-20mA DC |
| Input Resistance | 250Ω |
| Stroke Control Range | 10-150 mm; 0-90° |
| Explosion Proof | Ex d II BT6; Ex d II CT6; Ex ia II CT6 |
| Ambient Temperature | -20 - 70℃ (Standard); -40 - 70℃ (Low Temp Type); -20 - 120℃ (High Temp Type) |
| Explosion Proof Temperature | -20 - 60℃ |
| Hysteresis | ± 1.0% F.S |
| Sensitivity | ± 0.2% F.S |
| Repeatability | ± 0.5% F.S |
| Flow Capacity | 80LPM (Sup =0.14MPa) |
| Protection Class | IP65 |
| Weight | 2.7KG |
3. Structure
YT-1000L
YT-1000R
4. Action principle
YT-1000L TYPE
When the input signal, the torque motor (1) generate a electromagnetic field, the baffle (2) received and leave away from the nozzle(3). The air which in the pilot valve (4) will be elimination, and push the valve core (8), Air input to the actuator (11) through the base (7). With pressure increase, the push rod (12) go down, the feedback stem (13) pull the spring (16). Until the force between the spring (16)and the torque motor (1) keep balance, the baffle (2) go back. Then the valve core (8) gag the base (7)again, the positioner keep stable.
5. Product type selection