特 徴 By combining several pressure (temperature) transmitters into a unit, it can be used as an indicator device to detect and remotely monitor the operating pressure (supply, discharge, drive, etc.) of cargo oil pumps and ballast pumps as part of VRCS. Three models are available according to the detection method, making it possible to handle a variety of process uids. Since they are pneumatic devices, they can be installed in hazardous areas. It detects the temperature, pressure, liquid level, viscosity, etc. of a process uid and outputs them as a control signal or transmission signal. The signals are used for various applications such as control of valves and monitoring of detected values. ■NS732 ■NS777 ■NS904 In addition to temperature and pressure, this pneumatic indicating controller can be used for all kinds of control, including liquid level and viscosity, depending on the combination with a transmitter, and outputs a signal to automatically adjust the control object to the optimum value. It is designed for easy operation, handling, and maintenance, and has been used for a long time. ■Electric Controller Compatible with various types of input signals and capable of outputting control signals (4–20 mA) as well as alarms, etc., this controller is equipped with a wide variety of functions. In addition to mounting on a console, it can also be installed in a control box for delivery. This is a viscosity transmitter based on the principle that uid viscosity is directly proportional to the differential pressure generated at the front and back of the inner small tube. Viscosity is continuously detected as differential pressure, converted into a pneumatic or electrical signal, and transmitted. In recent years, environmental regulations have made it more important to control viscosity, and this device can be used to detect low-viscosity uids. This is an electric viscosity transmitter based on the principle of vibration. By using a piezoelectric element to which an electric signal is applied to generate torsional vibration in the detector, changes in viscous resistance due to the uid are detected and viscosity is measured. This model can also be used to detect low viscosity uids. Nominal size Pressure rating Main unit standard material Rated pressure Fluid temperature Output signal Standard measurement range Detection accuracy Minimum detectable viscosity Response time Mass 40A, 50A, 65A, 80A JIS 5K to 20K; ANSI 125 to 300 FCD400, SCPH2 2.0 MPa Max.180 °C 4 to 20 mA 0 to 30, 40, 50 mm2/s Within 2% of total scale width 0 mm2/s Approx. 5.0 sec Approx. 12 kg Nominal size Pressure rating Main unit standard material Rated pressure Fluid temperature Output signal Standard measurement range Detection accuracy Minimum detectable viscosity Response time Mass 40A, 50A, 65A, 80A JIS 5K to 20K; ANSI 125 to 300 FCD400, SCPH2 2.0 MPa Max. 200 °C 20 to 100 kPa or 4 to 20 mA 0 to 30, 40, 50 mm2/s Within 1% of total scale width 2 mm2/s Approx. 2.6 sec Approx. 47.4 kg Operating air pressure (output) Control action Detection accuracy Control target Standard measuring range Mass 20 to 100 kPa PI action, PID action Within 1% of total scale width Temperature, pressure, viscosity, liquid level, differential pressure 0 to 100, 150, 200, 300 °C 0 to 0.3, 0.5, 1, 1.5, 2, 3, 5 MPa –10 to 20, 40 kPa, etc. 5 kg (Temp. controller: 6 kg) Output signal Detection accuracy Detection target Standard measurement range Additional specifications for pressure detection 20 to 100 kPa Within 1% of total scale width Temperature, pressure 0 to 100, 150, 200, 300 °C 0 to 0.3, 0.5, 1, 1.5, 2, 2.5, 3, 5, 10 MPa –760 mmHg to 0.3, 0.4, 0.5 MPa, etc. Diaphragm seal type, Reed diaphragm seal type VRCS for Offshore Use / Control Valves and Automatic Control Equipment Indicating Controller Small Tube Viscosity Transmitter Vibrating Viscosity Transmitter 17 NAKAKITA VRCS PRODUCT CATALOG
RkJQdWJsaXNoZXIy NDY3NTA=