Remote-sealed Differential Pressure Transmitters

Remote-sealed Differential Pressure Transmitters



AT9000 Advanced Transmitter Remote-sealed Differential Pressure Transmitters (GTX**R series) are used to measure differential pressure (flow rate, fluid level, etc.) of high-temperature or highly corrosive, condensable fluids. We offer an extensive lineup including small bore flange models starting at 40 mm and models for high temperature (including high temperature high vacuum) applications.


Remote-sealed Differential Pressure Transmitters


Model GTX35R GTX40R
Measurement span 2.5 to 100 kPa 35 to 700 kPa
Setting range -100 to 100 kPa -100 to 700 kPa
Reference accuracy
(Varies by material and measurement span)
±0.2% ±0.2%
Fill fluid Silicone oil (for the following models: general purpose, high temperature, high temperature vacuum, and high temperature high vacuum)
Fluorine oil (oxygen and chlorine models)
Waterproof and dust-proof construction IEC IP66/IP67
Explosion-proof construction TIIS flameproof (Exd IICT4)
KOSHA flameproof
FM explosion proof, intrinsic safe and Nonincendive
ATEX/NEPSI/IECEx flameproof, intrinsic safe and Type n
INMETRO flameproof
Range of operating temperatures for liquid part
(Varies with pressure)
Silicone oil: -40 to 280 °C (varies with fill fluid)
Fluorine oil: -10 to 120 °C
Range of operating pressures for liquid part
(Varies with temperature)
Silicone oil for general purpose and high temperature models: from 2 kPa abs
High temperature vacuum and high temperature high vacuum models: from 0.13 kPa abs
Fluorine oil: from 53 kPa abs
Wetted material SUS316 (diaphragm SUS316L), Hastelloy C, Tantalum
Power 17.9 to 42V DC
Output signal 4 to 20 mA DC (SFN communication)
4 to 20 mA DC (HART® communication)
Flange bore Flush models: 80 mm, 50 mm, 40 mm. Protruding models: 100 mm, 80 mm, 50 mm
Safety certification Safety Integrity Level (SIL) 2 certification

Excellent long-term stability

Zero drift: long-term stability of only ±0.1 % drift over 10 years

Fast response

Response speed: 100 ms or faster; can be used in applications that require fast response.

Wide measuring range (rangeability)

This single model offers a wide measurement range, which is very useful for both expanding the scope of measurement and reducing the equipment needed. Rangeability 1:400

Very user-friendly

Zero/span adjustment can be done without opening the cover.

Multiple functions

Historical data (e.g., on excessive pressures or abnormal temperatures) can be retrieved by a communicator.