Samson 3725 Electric positioner valve positioner with HART communication
Product Introduction
The positioner ensures a predetermined assignment of the valve position (controlled variable x) to the input signal (set point w). It compares the input signal received from a control system to the travel or rotational angle of the control valve and issues a corresponding output signal pressure (output variable y).
Specifications
| Actuation | Double-acting, Spring-return, Linear |
| Control Type | On/Off, Throttling, Positioning |
| Operating Temperature | Standard Temperature |
| Power Source | Pneumatic |
| Application | Angle Valve, Global Valve |
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Travel (adjustable)
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Direct attachment to Type 3277: 5 to 30 mm
Direct attachment to Type 2780-2: 6/12/15 mm
Attachment to Type 3372 Actuator: 15/30 mm
Attachment according to IEC 60534-6 (NAMUR): 5 to 50 mm
Attachment to rotary actuators: 24 to 100°
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Minimum current
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3.8 mA
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Load impedance
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Max. 6.3 V (corresponds to 315 Ω at 20 mA)
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Supply air
Air quality acc. to ISO 8573-1
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Supply air: 1.4 to 7 bar (20 to 105 psi)
Max. particle size and density: Class 4 · Oil content: Class 3 · Pressure dew point: Class 3 or at least 10 K
below the lowest ambient temperature to be expected
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Signal pressure (output)
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0 bar up to the capacity of the supply pressure · Can be limited to approx. 2.3 bar by software
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Permissible ambient temperature
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–20 to +80 °C
–25 to +80 °C with metal cable gland
The limits in the test certificates additionally apply for explosion-protected versions
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Influences
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Temperature: ≤0.15 %/10 K
Effect of vibration: ≤0.25 % up to 2000 Hz and 4 g according to IEC 770
Supply air: None
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Detailed Image
Packaging and Delivery
1. Swift delivery
For common parts, we can deliver the goods within 3 days
2. Original products
All the products we sell are from origin manufacturer. We will submit all the manufacturer documentation while we finish delivery.
3. Quality Assurance
4. Technical Support
Including inspection, repair, and maintenance, we can give all kinds of technical support.
5. Quickly response
Our staffs will keep 24h online and answer your question very quickly.
