Smart Multivariable Flow Transmitter
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ST3000 Smart Multivariable Flow Transmitter Model JTD720A OVERVIEW ST3000 Smart Multivariable Flow transmitter is a differential pressure transmitter for mass flow measurement for gas. It measures process DP, SP, and temperature simultaneously and outputs analog 4 to 20mA signal proportional to the mass flow (volume flow at the standard condition). FEATURES • Three process variable measurements and a mass flow calculation with one transmitter. • High accuracy and high range ability Past instrumentation Calculator Mass flow (Compensated flow rate) Measurement fluid N2, O2, H2, Ar, Steam, Natural gas, Air, etc. Gas Differential pressure transmitter Pressure transmitter Temp. sensor Custody transfer of gas at chemical/steal market. Flow control of fluid gas for an incinerator or a boiler. Management of utility such as steam and air. Flow rate measurement of H2 or other flamable gases at hazardous area. FUNCTIONAL SPECIFICATIONS Type of protection JIS C 0920 watertight: NEMA 3 and 4X JIS F 8001 class 2 watertight IEC IP67 JIS Flameproof approval Mass flow (Compensated flow rate) Measuring span/Setting range/Working pressure range Temp. sensor Output / Communication Analog output (4 to 20 mA) Digital output (DE protocol) Specifications are subject to change without notice.

Azbil Corporation PHYSICAL SPECIFICATIONS Power supply and load resistance 17 to 45V DC. A load resistance of 250Ω or more is necessary between loops. (See Figure 2.) Materials Fill fluid Ambient temperature For general purpose (Silicone oil) For oxygen service (Fluorine oil) Normal operating range -15 to 65°C (for general purpose models) -10 to 65°C (for oxygen service models) -15 to 65°C (digital indicator model) Operative limits Transmitter case -40 to 70°C (for general purpose models) -40 to 70°C (for oxygen service models) -30 to 70°C (digital indicator model) Aluminum alloy Meter body...

Azbil Corporation Differential pressure Static pressure PP Temperature DP: Differential pressure DPLRV.: Value to output 0% (4 mA) of differential pressure DPSPAN: Span of differential pressure range PP: Static pressure (process pressure) PPREF.: Designed process pressure PPELV.: Elevation value of static pressure Process temperature Designed process temperature Elevation value of temperature Operative range Unusable range Normal operating range Operative limit Operative limit Working pressure P (kPa {mmHg} abs.) Figure 1 Calculation equation Temperature of wetted parts ( C) Figure 2 Supply...

Azbil Corporation Transmitter handling notes ƽ CAUTION • After installing the transmitter, do not stand on it. Using it as a foothold could cause it to collapse and cause physical injury. • Be careful not to hit the glass indicator with tools etc. This could break the glass and cause injury. • The transmitter is heavy. Wear safety shoes and take care when installing it. To make the most of the performance this transmitter can offer, please use it properly noting the points mentioned below. Before using it, please read the user’s manual. Transmitter installation notes ƽ WARNING • When...

Azbil Corporation Table 1 Performance specifications Working pressure rating Low flow cut-off Working pressure range Temperature effect (after compensation) 3.5 MPa max. (For vacuum pressure, see Figure 3). Value of cut-off: The output is changeable from 0 to 20%. – 100 ≤ URV ≤ 100 kPa Drop-out type: Zero or linear output 3.5 MPa abs. max. (refer to Figure 3 for negative pressure.) Shown are the upper limit (URV) and lower limit (LRV) of the setting range or the percentage ratio of the maximum value of the span to χ (kPa.) PPREF: designed pressure PPMAX.: max. pressure of process Zero...

Azbil Corporation MODEL SELECTIONS JTD720A - I II III IV V - VI VII VIII IX X - Options Measuring span Basic model no. Selections JTD720A - Optional specifications Options - Selections I Output / 4 to 20 mA Communications Digital output (DE protocol) A5 Long vent/drain plugs Meterbody Vent / Wetted parts of cover drain plugs center body Regular type (Silicon oil) For oxygen service (Fluorine oil) *1 F1 Without temperature compensation *2 G1 With one elbow D1 Water free finish (with oil free finish) A T2 Material certificate (Mill sheet) Rc1/4, front connection V Bolts / nuts material T5...

Azbil Corporation DIMENSIONS Resistance temperature sensor + Receiver + Power supply 24V DC Process connection port Process connection port Terminal connection diagram Digital meter (optional) Long vent /drain plug Terminal screw for grounding Electrical conduit connection port Electrical conduit connection port Process connection port (bottom parts) Vertical installation Digital meter (optional) M4 terminal screw for grounding Electrical conduit connection point Electrical conduit connection point Process connection Process connection Horizontal installation

Please read the "Terms and Conditions" from the following URL before Specifications are subject to change without notice. Azbil Corporation Advanced Automation Company URL: http://www.azbil.com/ 1st Edition: |SSUed in July 2004 No part of this publication may be reproduced or duplicated without the prior written permission of Azbil Corporation.