• 780 Series Purge Control Level Transmitters
  • 780 Series Purge Control Level Transmitters - 2
  • Generates a constant flow of compressed air to purge a downpipe
  • All-pneumatic design does not include integral transmitter
  • Provides 1:1 pressure signal to a compatible indicator or external transducer through 1/4 in. airline tubing
  • Holds a fixed pressure differential across a precision orifice to ensure constant flow rate of 1 cfh (cubic foot per hour), making it possible to maintain a linear 1:1 response of the sensing system
  • Back pressure sensed is equivalent to the hydrostatic head pressure due to actual liquid depth
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Burst Pressure (psi)

Temperature [Min] (ºC)

Temperature [Min] (ºF)

Temperature [Max] (ºC)

Temperature [Max] (ºF)

Fittings

Pressure Output

Repeatability

Part Number

Description

Burst Pressure

Fittings

Pressure Output

Repeatability

N/A 780 Series 1/4" National Pipe Thread (NPT) Fittings and 25 to 650" SafeGard Range Pressure Output Purge Control Level Transmitter N/A 200 psi N/A None, 1/4 in. National Pipe Thread (NPT) N/A 25 to 650 in. SafeGard Range N/A ± 0.20% of Calibrated Span
N/A 780 Series 1/4" National Pipe Thread (NPT) Fittings and 650 to 1,750" SafeGard Range Pressure Output Purge Control Level Transmitter N/A 200 psi N/A None, 1/4 in. National Pipe Thread (NPT) N/A 650 to 1,750 in. SafeGard Range N/A ± 0.20% of Calibrated Span
N/A 780 Series 1/4" National Pipe Thread (NPT) Fittings Purge Control Level Transmitter N/A 200 psi N/A None, 1/4 in. National Pipe Thread (NPT) N/A Without SafeGard Option N/A ± 0.20% of Calibrated Span
N/A 780 Series Polyflo; (1) 3/8" Tube, (2) 1/4" Tube Fittings and 25 to 650" SafeGard Range Pressure Output Purge Control Level Transmitter N/A 200 psi N/A Polyflo; (1) 3/8 in. Tube, (2) 1/4 in. Tube N/A 25 to 650 in. SafeGard Range N/A ± 0.20% of Calibrated Span
N/A 780 Series Polyflo; (1) 3/8" Tube, (2) 1/4" Tube Fittings and 650 to 1,750" SafeGard Range Pressure Output Purge Control Level Transmitter N/A 200 psi N/A Polyflo; (1) 3/8 in. Tube, (2) 1/4 in. Tube N/A 650 to 1,750 in. SafeGard Range N/A ± 0.20% of Calibrated Span
N/A 780 Series Polyflo; (1) 3/8" Tube, (2) 1/4" Tube Fittings Purge Control Level Transmitter N/A 200 psi N/A Polyflo; (1) 3/8 in. Tube, (2) 1/4 in. Tube N/A Without SafeGard Option N/A ± 0.20% of Calibrated Span
N/A 780 Series Swagelok; (1) 3/8" Tube, (2) 1/4" Tube (Compatible with Copper or Poly Tubing) Fittings and 25 to 650" SafeGard Range Pressure Output Purge Control Level Transmitter N/A 200 psi N/A Swagelok; (1) 3/8 in. Tube, (2) 1/4 in. Tube (Compatible with Copper or Poly Tubing) N/A 25 to 650 in. SafeGard Range N/A ± 0.20% of Calibrated Span
N/A 780 Series Swagelok; (1) 3/8" Tube, (2) 1/4" Tube (Compatible with Copper or Poly Tubing) Fittings and 650 to 1,750" SafeGard Range Pressure Output Purge Control Level Transmitter N/A 200 psi N/A Swagelok; (1) 3/8 in. Tube, (2) 1/4 in. Tube (Compatible with Copper or Poly Tubing) N/A 650 to 1,750 in. SafeGard Range N/A ± 0.20% of Calibrated Span
N/A 780 Series Swagelok; (1) 3/8" Tube, (2) 1/4" Tube (Compatible with Copper or Poly Tubing) Fittings Purge Control Level Transmitter N/A 200 psi N/A Swagelok; (1) 3/8 in. Tube, (2) 1/4 in. Tube (Compatible with Copper or Poly Tubing) N/A Without SafeGard Option N/A ± 0.20% of Calibrated Span
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