The Valtek XL Series (XL and XL90), two-stage positioners offer fast and sensitive dynamic response characteristics to meet extremely demanding control objectives. The positioners are available with either an electro-pneumatic (I/P) transducer module for milliamp current control signals or a pneumatic module for aircontrol signals. Designed for high performance, these positioners are field reversible and ruggedly built for reliability in severe industrial environments.
Additional information
| Type | Electro-Pneumatic |
|---|---|
| Protocols | Pneumatic, Analog |
| Diagnostics | None |
| Actuator Action | Linear, Rotary |
| Positioner Action | Single (Three-Way), Double (Four-Way) |
| Enclosure | Aluminum |
| Local Feedback | Flat, Dome |
| Classification | General Purpose, Intrinsically Safe, Explosion Proof |
| Supply Medium | Air |
| Output Capacity | 16.5 SCFM at 60 psi |
| Air Consumption | XL: 0.28 SCFM at 60 psi, XL90: 0.34 SCFM at 60 psi |
| Temperature Range | Standard: -20°F to 185°F (-29°C to 85°C), Extended: -50°F to 250°F (-45°C to 121°C) |
Features & Benefits
- Designed for high performance, these positioners are field reversible and ruggedly built for reliability in severe industrial environments
- Calibration is easy due to minimal interaction between zero and span, other positioner adjustments are enclosed for protection to discourage tampering
- Usable with either single or double-acting actuators (both linear and rotary) makes the XL Series positioners versatile
- XL Series positioners are designed with a high natural frequency coupled with pneumatic damping – unaffected by vibrations with a cceleration up to 2 g's and frequencies to 500 Hz
- Action can be reversed in the field on linear valves by simply turning the cam over, reversing anti-backlash spring and changing output tubing
- The XL90 has positioner feedback options with local visual dome indicator, limit switches, and analog position transmitter
- The XL Series positioners with the NT 3000 I/P or the pneumatic module are designed to withstand 150 psi at all ports and are relatively insensitive to supply pressure fluctuation
