Most plants still have hundreds of old explosion-proof pneumatic positioners from the 1990s. When they break, replacing with European smart Ex d positioners costs a fortune. The TS800 Ex d version costs almost the same as repairing the old pneumatic one, but you get HART, auto-tune, and diagnostics. Turnaround teams just swap them one-for-one and suddenly the whole unit has digital communication.

• Ex d IIC T6 flameproof – big aluminum housing with glass window
• Ex ia IIC T4 intrinsic safety version also available
• Same auto-tune and HART as the standard TS800
• Direct NAMUR mounting – no extra bracket needed
• Big display you can read from the ground
• Works from -40 °C to +85 °C

• Refinery hydrogen and cracker valves
• LNG plant control valves
• Offshore platform actuators
• Chemical plants with Zone 1

Q: Can I use the same feedback lever as my old positioner?
A: Yes – standard NAMUR kit fits everything.

Q: Does HART work through the flameproof housing?
A: Yes – just connect the handheld across the 250 Ω resistor.