Series 900 Differential Pressure Transmitters
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ST3000 Series 900 Smart Transmitter Differential Pressure Transmitters with FOUNDATION™ fieldbus Model STD910/STD920/STD930/STD960/STD921/STD931/STD961 OVERVIEW The ST3000 Series 900 with FOUNDATION™ fieldbus is an accurate, stable, and reliable pressure / differential pressure transmitter, which fully complies with the 31.25 kbps voltage mode FOUNDATION™ fieldbus. Its built-in AI function blocks provide process variables to devices on the Fieldbus and its PID control function block enables process control in the field. Since the ST3000 Series 900 is FOUNDATION™ registered, it can operate seamlessly with other registered field devices as well as host systems in a wide range of control applications. FEATURES Excellent stability and high performance • Long-term stability is proven in 500,000 installations worldwide. • Unique characterization and composite semiconductor sensors realize excellent temperature and static pressure characteristics. APPLICATION Wide measuring range (rangeability) A wide measuring range is available from a single model. This feature is highly effective in taking measurements over a wide range and reducing the need for reserve units. • The measuring range of the model STD920, for example, is 0.75 to 100 kPa (rangeability = 1:135) Petroleum / Petrochemical / Chemical • For strict flow control in combination with orifice plates. • For measuring pressures and liquid levels in pipes and tanks. Electric power / City gas / Other utilities For measurement applications that require high degrees of stability and accuracy. Draft range applications such as semiconductor equipment manufacturing / Clean rooms For applications that require highly stable, accurate measurement. • A wide range of models is available to meet user requirements. They include micro-differential pressure, standard differential pressure, high differential pressure, standard differential pressure / high static pressure, and high differential pressure / high static pressure models. • A wide variety of corrosion-resistant materials for wetted parts is also available. Pulp and paper For lines that need transmitters resistant to fluid such as chemical liquids and corrosive fluids. Iron and steel / Nonferrous metal / Ceramics • For highly stable, accurate measurements such as furnace pressure measurement. • For lines that require stable measurement under strictly controlled (temperature, humidity, vibration, etc.) conditions. FOUNDATION™ is a registered trademark of the Fieldbus Foundation. Machinery / Shipbuilding For lines that require stable measurement under strictly controlled (temperature, humidity, etc.) conditions. Specifications are subject to change without notice.

Azbil Corporation FUNCTIONAL SPECIFICATIONS Type of protection JIS C0920 watertight: NEMA3 and 4X JIS F8001 class 2 watertight: IEC IP67 FM Explosionproof approval Explosionproof for Class I (Gas, steam), Division 1, Group A, B, C, D Dust-ignition for Class II (Inflammable dust), Division 1, Group E, F, G Suitable for Class III (inflammable fiber), Division 1 Nonincendive for Class I, Division 2, Group A, B, C, D ATEX Flameproof approval Working pressure P kPa {mmHg} Unusable range Normal operating range Working Pressure Range Operative limit Operative limit Figure 3 Working pressure and...

Azbil Corporation No. SS2-STJ10F-0100 Adapters for anticorrosion materials These are adaptor flanges to connect 82 mm pipes made of anticorrosion materials (excluding Hastelloy C) to 54 mm general-purpose pipes. Operative limit -50 to 93°C for general purpose models -40 to 70°C for general purpose model (model STD910) -40 to 80°C for oxygen and chlorine models -30 to 80°C for models with digital indicators Elbow This is an adaptor for changing the electrical conduit connection port from the horizontal to the vertical direction, if required by wiring conditions in the field. One or two...

Azbil Corporation PERFORMANCE SPECIFICATIONS Accuracy Shown for each item is the percentage ratio for χ (kPa), which is the greatest value of either XD_SCALE_EU_100 (*1), XD_SCALE_EU_0 (*2), or the span. Model STD910 (Material of wetted parts: Diaphragm; SUS316L, Others; SUS316) Linear output: 1.0⎞ ⎛ -----± ⎝ 0.15 + 0.15 × When output is 50 to 100%:same as linear output Square-root output: 50 square – root ⋅ output When output is 7.1 to 50%: linear output x -------------------------------------------------------- % When output is less than 7.1%: dropout Temperature characteristics (Shift...

Azbil Corporation Model STD930 / 931 (Material of wetted parts: Diaphragm; SUS316L, Others; SUS316) Accuracy (*3) Linear output: ± 0.1% (For χ ≥ 140kPa {1.4 kgf/cm2}) 140 ± ⎛ 0.025 + 0.075 × --------⎞ % (For c χ < 140kPa {1.4 kgf/cm2}) ⎝ χ ⎠ Square-root output: When output is 50 to 100%: same as the linear output 50 When output is 7.1 to 50%: linear output x -------------------------------------------------------- % square – root ⋅ output When output is less than 7.1%: dropout Temperature characteristics (Shift from the set range) (*3) Change of 55°C Zero shift: Combined shift: (including...

Azbil Corporation Model STD920 (Material of wetted parts: Diaphragm; Hastelloy C, Tantalum, SUS316L Others; Hastelloy C, Tantalum, SUS316L) Accuracy (*3) Linear output: ± 0.3% (For χ ≥ 5.0kPa {500 mmH2O}) 5.0 ± ⎛ 0.225 + 0.075 × ------ ⎞ % (For χ < 5.0kPa {500 mmH2O}) ⎝ χ⎠ Square-root output: When output is 50 to 100%: same as the linear output 50 When output is 7.1 to 50%: linear output x -------------------------------------------------------- % square – root ⋅ output When output is less than 7.1%: dropout Temperature characteristics (Shift from the set range) Change of 30°C (*3) (Range...

Azbil Corporation Model STD960 (Material of wetted parts: Diaphragm; SUS316L, Others; SUS316L) Accuracy (*3) Linear output: ± 0.3% (For χ ≥ 3.5MPa {35 kgf/cm2}) 3.5 ± ⎛ 0.25 + 0.05 × ------ ⎞ % (For χ < 3.5MPa {35 kgf/cm2}) ⎝ χ⎠ Square-root output: When output is 50 to 100%: same as the linear output 50 When output is 7.1 to 50%: linear output x -------------------------------------------------------- % square – root ⋅ output When output is less than 7.1%: dropout Temperature characteristics (Shift from the set range) Change of 30°C(*3) (Range from -5 to 55°C) Zero shift: Combined shift:...