Pressure and Differential Pressure Transducer

Transcription

1 Pressure and Differential Pressure Transducer Construction The EMÜ 30 pressure and differential pressure transducer has an all plastic housing and is suitable for relative pressure / differential pressure measurements from 0- bar to 0-0 bar. The pick-up is temperature compensated and is available in various designs. The process connection is configured as standard with male threads to DIN 385 or DIN 688. The electrical connection is via a plug complying with DIN EN Form A. The transducer is calibrated at the factory and provides industrial standard measuring signals. Features The pressure transducer converts the physical variable pressure proportionally into an electrical signal. The differential pressure transducer measures the physical variable pressure at measuring points and converts the differential into an electrical signal. Plus and minus differentials are evaluated. EMÜ 30 is available as a wire transducer (4-0 ma) and as a pressure measurement device with either current (0/4-0 ma) or relay output (adjustable MIN and MAX switch points). Advantages All plastic design Ceramic sensor with PTFE foil Linear output signal Simple mounting Fast response time Optional mounting position Minimum temperature influence Transducer dimensions code 600 [mm] / /

2 Technical data Input parameters Measuring span 0-0 bar (see order key) limit see table (page 3) Materials Materials of medium wetted parts Connecting element PVDF Sensor - Stainl. steel (code A0) Stainl. steel.440/ PTFE (code A3) PTFE foil 0.5 mm on ceramic sensor Seal Output parameters wire transducer Output span 4-0 ma Load impedance see characteristic Measurement device with current output Output span 0/4-0 ma Load impedance 750 Ω Voltage output 0-0 V upon request Measurement device with relay output Switching output 5 V AC / 0.6 A 0 V DC / 0.6 A 30 V DC /.0 A Switch points Min relay adjustable from 0-00% Max relay adjustable from 0-00% ysteresis ±% of measuring span Optical display Type LC display 3 / digit Units bar, psi Functions (selection by switch) Display of measured value Switch point MIN relay Switch point MAX relay Accuracy ±0.5% of measuring span ± digit Temperature coefficient of zero output typ 0.%/0K of measuring span Temperature coefficient of output span typ 0.%/0K of measuring span influence 0.% of measuring span Characteristic deviation at limiting value adjustment - Sensor material (code A0) (incl. repeatability) ±0.5% of measuring span ysteresis ±0.% of measuring span - Sensor material (code A3) ± % of measuring span (incl. hysteresis and repeatability) Warming up time 5 min Response time 0 ms Auxiliary power wire transducer 5-35V DC Measurement device Maximum ripple Ambient conditions Ambient temperature Medium temperature 4V DC (+0%, -5%) / 50mA V -0 C C -0 C C wire transducer: Storage temperature -0 C C Directives: EMC directive 89/336/EEC Low voltage directive 73/3/EEC Protection class IP 65 Materials of parts in contact with the ambience Connecting element PVDF ousing PP ousing cover of measurement device PSU Mechanical data Pressure connection Connecting element /4A to DIN 688 /A to DIN 688 /4A to DIN 385 /A to DIN 385 3/4A to DIN 385 Torque max. 0 Nm Electrical connection Plug according to DIN EN Form A Mounting position optional Weight wire transducer appr. 70 g Measurement device appr. 300 g Differential pressure measurement device appr. 500 g Pressure / temperature correlation for PN 0 Temperature [ C] -0-0 ± Material permissible operating pressure [bar] PVDF 0-0,0 0,0 0,0 0,0 0,0 0,0 9,0 8,0 7, 6,

3 Technical data Sensor material Measure range min. Table : Measuring ranges / Sensor material Stainless steel (code A0) PTFE (code A3) max. [bar] Bursting pressure Max. medium temperature min. max. [bar] Bursting pressure Max. medium temperature [bar] rel.* abs. rel.*/abs. rel.*/abs. [ C] rel.* abs. rel.*/abs. rel.*/abs. [ C] 0 -,0-0,6 n.v. 4, ,6-0,6 n.v. 6, ,5-0,6 n.v. 0, ,7 n.v ,0-0,6 n.v. 6, ,7 n.v ,0-0,6 n.v. 6, ,7 n.v ,0-0,6 n.v. 6, ,7 n.v * the differential pressure measurement device operates with relative pressure sensors / n.v. = not available, can be used up to 0mbar/abs / Two different pressure sensors are used in the relative and absolute pressure versions. Load impedance wire transducer Connection diagram Measurement device with relay output 35 = Actual value = MIN value 3 = MAX value 3 4 Display changeover (in housing) Supply voltage [VDC] Supply voltage = ND = 4 V DC Load impedance [Ohm] Signal output = MIN MIN-Relais relay = Uv 3= MAX MAX-Relais relay Connection diagram wire transmitter Connection diagram Measurement device with current output Supply voltage = ND = 4 V DC 3 4 V Signal output = ND = 0/4-0 ma 3 30

4 Order data Connection size Differential pressure measurement device /4 (differential pressure) D / (differential pressure) D Relative pressure measurement device /4 (relative pressure) / (relative pressure) 3/4 (relative pressure) 3 Absolute pressure measurement device /4 (absolute pressure) A / (absolute pressure) A 3/4 (absolute pressure) A3 Connection type At rear of housing Connection standard DIN 688 (not for connection code A3/3) DIN 385 Sensor material Stainless steel.440,.430 Ceramic sensor, PTFE coated R 9A 9B Material PVDF 0 A0 A3 Accuracy class 0,5% (sensor material A0) C % (sensor material A3) D Transducer -wire transducer without display, Connection size code A-A3/D-D ma, with display ma, without display ma, with display ma,without display 6 Measurement device with relay output, with display 630 Measuring range 0- bar (only sensor material code A0) bar (only sensor material code A0) 00 0-,5 bar bar bar bar psi (only sensor material code A0) psi (only sensor material code A0) psi psi psi psi MPa MPa MPa MPa 06 Order example 30 R 9A 0 A3 D Type 30 Connection size (code) Connection type (code) R Connection standard (code) 9A Connecting element material (code) 0 Sensor material (code) A3 Accuracy class (code) D Transducer (code) 600 Measuring range (code)

5 Transducer dimensions code 600 [mm] / / Transducer dimensions code 600 [mm] Connection standard code 9B / / / Ceramics KERAMIK Stainl. steel.430 Edelstahl.430 Stainl. Edelstahl steel.440 PVDF PTFE-Folie foil PVDF Sensor construction example, sensor material code A0 Sensor construction example, sensor material code A3 Transducer dimensions [mm] 60 / 6 / 60 / 6 / 630 / 63 / / Transducer dimensions [mm] 60 / 6 / 60 / 6 / 630 Connection standard code 9B / / /

6 Dimensions Differential pressure measurement device 60 / 6 / 60 / 6 / 630 [mm] / / Connection standard code 9B / For further transducers, accessories and other products please see our Product Range catalogue and Price List. Contact EMÜ. Should there be any doubts or misunderstandings, the erman Subject to alteration 0/ version of this data sheet is the authoritative document! Technical data sheet VALVES, MEASUREMENT AND CONTROL SYSTEMS EMÜ ebr. Müller Apparatebau mb & Co. K Fritz-Müller-Str. 6-8 D Ingelfingen-Criesbach Tel. +49(0) 40/3-0 Telefax +49(0) 40/3-4 info@gemue.de