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SX-PTDB Series
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SX-PTDB Series

SX-PTDB Series

The SX-PTDB Series remote-mount process pressure transmitter uses a remote diaphragm seal and capillary system to measure the pressure, level, and density of liquids, gases, or steam while isolating the sensing element from corrosive, viscous, crystallizing, sanitary, or high-temperature process media. It provides high-accuracy measurement, multiple remote-seal configurations, adjustable damping, and optional HART, RS-485 Modbus RTU, or Profibus PA communication. With process temperatures up to 450°C, IP67 protection, and optional ATEX intrinsic-safety or flameproof certification, it is suitable for oil and gas, chemical processing, power generation, water treatment, food and beverage, pharmaceutical, pulp and paper, and marine applications.

  • Gauge Pressure Range: 0–6 kPa to 0–25 MPa
  • Absolute Pressure Range: 0–6 kPa to 0–3 MPa
  • Accuracy: ±0.075% FS
  • Output : 4-20 mA / HART / Modbus / Profibus PA
  • Power Supply: 9–36 V DC without display; 13.5–36 V DC with LCD or OLED display
  • Ingress Protection: IP67
  • Ambient Temperature: Max. +85 °C
  • Flange Sizes: DN25 / DN50 / DN80 / DN100 / 1" / 2" / 3" / 4"
  • Flange Standards: DIN 2501 / ANSI B16.5
  • Pressure Ratings: PN 1.6/4 MPa / PN 6.4 MPa / PN 10 MPa; Class 150 / 300 / 600
  • Wetted Materials: 316L stainless steel / Hastelloy C / Tantalum
  • Explosion Protection: ATEX intrinsic safety or flameproof, optional
Ordering Code
$785.00

Product Overview

The SX-PTDB remote-mount process pressure transmitters measure liquid, gas, or steam level, density, and pressure, converting the measured value into a 4–20 mA DC HART output signal. HART, Profibus PA, and RS-485 Modbus communication protocols are also supported. The remote seal diaphragm and capillary isolate the transmitter body from the process medium using fill fluid (such as silicone oil), preventing the process medium from directly contacting the pressure sensor. The measuring range (un-spanned) is 0–6 kPa to 25 MPa. Remote seal flange rated pressures: PN 1.6/4 MPa, PN 6.4 MPa, PN 10 MPa (DIN standard); Class 150, Class 300, Class 600 per ANSI B16.5.

Typical Measurement

  • Gauge and absolute pressure
  • Tank and vessel level
  • Density

Main Features

  • Wide Measuring Range 0–6 kPa to 25 MPa gauge; remote
    seal flange rated for PN 1.6/4, 6.4, 10 MPa (DIN) and Class 150,300, 600 (ANSI) 
  • 2-Wire 4–20 mA HART Output HART, Profibus PA, and RS-
    485 Modbus RTU communication protocols supported
  • Remote Seal Design Process medium isolated by diaphragm
    — pressure transmitted via fill fluid through capillary to measuring sensor 
  • High Accuracy ±0.075 % FS accuracy
  • Rotatable Electronic Housing Rotatable up to 360° and
    lockable in any position; direct mounting via remote seal flange
  • Wide Temperature Range Process medium −40 to +450 °C
    (−40 to +842 °F) depending on fill fluid selection
  • Ingress Protection IP67 per IEC 60529
  • Explosion Protection ATEX Intrinsic Safety Ex ia IIC T4 Ga
    and Flameproof Ex d IIC T6 Gb (CE Directive 2014/34/EU)

Product Application

Industries Served

Oil & Gas
Power Generation
Food & Beverage
 Petrochemical & Chemical
Water & Wastewater
Pharmaceutical
Metal Smelting
Pulp & Paper
Marine & Offshore

Technical Data

Measurement
Pressure Type Gauge pressure / Absolute pressure
Measured Parameters Pressure / Level / Density
Measuring Range — Gauge 0.6 kPa to 40 MPa
Measuring Range — Absolute 2 kPa to 3 MPa
Span Adjustment Zero shift correctable by zero adjustment; no span effect
Mounting Position Effect Zero shift correctable by zero adjustment; no span effect
Response Time Sensor time constant 0.1–1.6 s; adjustable damping 0.1–60 s
Accuracy & Stability
Reference Accuracy ±0.075% FS (optional ±0.1% FS)
Power & Output
Supply Voltage 9–36 V DC (without display); 13.5–36 V DC (with LCD/OLED)
Analog Output 4–20 mA DC, 2-wire, loop-powered; linear or square-root selectable
Digital Communication HART / RS-485 Modbus RTU / Profibus PA
Output Limits Imin = 3.9 mA; Imax = 20.5 mA
Alarm Output Low: 3.6 mA; High: 21 mA; Hold: last valid output value
Display Options LCD / OLED / None
Environmental Conditions
Ambient Temperature −40 to +85°C
Ambient Temperature with Display −20 to +65°C
Storage Temperature −50 to +85°C
Process Temperature Depending on fill fluid and configuration
Relative Humidity 0–100% RH
Ingress Protection IP67 (IEC 60529)
Shock Resistance 50 g / 11 ms (IEC 60068-2-27)
Vibration Resistance 2 g up to 500 Hz (IEC 60068-2-6)
Process Connection & Materials
Process Connection Remote seal flange per DIN 2501 or ANSI B16.5; flush, insertion, internal-diaphragm, or threaded-mount remote seal configurations available
Diaphragm Material 316L stainless steel / Hastelloy C
Fill Fluid Silicone oil / High-temperature silicone oil / Ultra-high-temperature silicone oil / Food-grade oil / Ultra-low-temperature fluid / Fluorine oil, depending on remote seal configuration
Housing Material Epoxy-coated aluminum alloy / 316 stainless steel
Mechanical Performance
Overload Capacity 0.2 MPa to 50 MPa depending on measuring range
Electrical Connection M20×1.5 Female or ½ NPT Female
Weight Actual weight depends on flange rating, capillary length, materials, and configuration.

Certifications & Compliance

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