PSM INSTRUMENTATION LTD

 coming soon....

High accuracy Radar gauging for marine & industrial applications

Intelligent Radar Transmitter employing FMCW Technology
Benefits at a glance Non-contact radar measurement 4-20mA output Choice of antenna types Hart, Modbus, Profibus interface options Accurate to 5mm on ranges up to 30 metres with 2mm repeatability 9.9GHz Quartz controlled all digital processing PLL- stabilised FMCW X-band antenna.
PSM can now offer RADAR level gauges to provide the very best accuracy for the monitoring of storage & process tanks in both the industrial & marine sector. This all new gauge utilises the very latest in FMCW technology developed from the Military sector to offer non-invasive measurement of level at a competitive price. The iRT is a cost effective level sensor designed for continuous non-contact level measurement The primary head unit is mounted to a standard tank flange fitting. and can be removed under service conditions. For long-distance transmission of level data, various standard communication interfaces (4 to 20mA, HART, MODBUS, PROFIBUS) are available for connection to plant control systems. The primary head can also accept up to 4 additional 4-20mA input signals, for example from temperature and/or pressure transmitters. These are then retransmitted via the chosen digital output. Communications Various output standards are available to suit application requirements HART MODBUS PROFIBUS Specification System structure Operating mode Quartz-controlled dynamic PLL-stabilised FMCW radar in the X band (8.5 – 9.9 GHz) with digital signal processing; compact & modular design Measured quantities Primary quantity: distance; derived quantities: level, volume Measuring range Maximum measuring range: 30 m (100 ft) Blocking distance Minimum 0.2 to 0.5 m (0.65 to 1.6 ft), Rate of change in level £ 10 m/min (£ 33 ft/min) Measured product conditions Physical properties Generally the product should have a relative permitivity of 3 or greater (er < 3) For er ³ 1.5 the product is still well recommended with application profiling. Process temperature Unrestricted but be aware of ambient and flange temperatures Operating pressure Cone antenna: -1 to +10 bar. Component parts Housing options Epoxy coated cast aluminium. Optional— Stainless Steel DIN 1.4581 and ANSI 316 Ti. Flange system and antenna Stainless Steel 1.4435 (316 L) / PTFE Gaskets FFKM (Kalrez 4079); Kalrez 2035; Viton (FPM); PTFE is also in contact with the product in all versions Process connection Cone antenna BS 4504-3.3:1989, BS1560-3.1:1989 ANSI B 16.5 DN 50 to DN 200, PN 6 to PN 64; 2” to 8”, 150/300 lb/RF Rod antenna Refer to separate data sheet Electrical connections Cable entries: M 25 x 1.5 Terminals: 0.5 – 2.5 mm2 (solid conductor: max. 4 mm2 ) Ambient conditions Hazardous locations BASEFA EEx d IIB T4, Zone 0, 1, 2 (EN50014, EN50018 Europe) - Pending Type Approval Lloyds Register - Pending EMC By design, EN 50081-1 Conducted and EN 50082-2 Radiated. Protection category EN60529/IEC529 IP 67 to DIN 40050 / IEC 144 Shock resistance Impact test to EN 61010, Sect. 8.2 with 0.5 J energy; drop test to prEN 50178 Vibration endurance limit By design, IEC 68-2-6 and prEN 50178 (10-57Hz: 0.075mm / 57-150Hz: 1g) and possibly 1mm amplitude at 2-13.2 Hz / 0.7g acceleration at 13.2-100Hz Salt spray test 3 week duration Ambient temperature at signal transducer Cone antenna: –20°C to +55°C (-24°F to +131°F) Functional range: -40 °C to +170°C (-40°F to +158°F) Flange temperature Cone antenna (T ambient £ 50°C (122°F)): -20°C to +150°C (-22°F to +284°F) Climate Optional integral 10 watt electronics heater element. Operator interface Operator interface language English Units of measurement Lengths: m, cm, mm, inch, ft, %, Volume: m3 , Litre, US Gal, GB Gal, ft3, bbl, % Conversion unit: any text Power supply 24V ACDC Standard: 18 – 31.2 V DC or 18 – 26.4 V AC (47-63 Hz) Universal (115/230 V AC) Optional: 100-240 V AC (tolerance: 85-264 V AC); 47-63 Hz Power consumption Typically 8.9W / 12.2VA Current inputs Additional inputs may be multiplexed meaning fewer cables are required on the vessel's deck. Type 4 x Current input, active or passive Current range 0(4)-20mA Accuracy/linearity 0.5% (rel. 20 mA; 25°C/77°F) Temperature drift £ 300 ppm/K (typically 70 ppm/K) Load 50 W (current), 10 kW (voltage) Relay output Switching output (optional) Nominal switching capacity (resistive load): 1 A 30 VDC, 0.3 A 125 VAC; On resistance £ 20 W; floating Failure signal Current output error signal: 2 mA (Exi = 3.6 mA) Switching contact contact opens or closes Digital interfaces error flags Measuring accuracy Error of measurement max. +/- 5mm (+/- 0.2”) or 0.1% Repeatability £ 0.5 x error of measurement Measured-value resolution 1 mm (0.04”)