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LEO 3

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Intelligent Transmitter with Digital Indication bus-capable LEO 3 / programmable 4…20 ma output LEO 3 is a micro-processor based transmitter with digital double-display for pressure (top display) and for the output signal (bottom display). The display is powered from the 4…20 mA current loop. The following functions can be executed with the front keys: MaX/MIN Activating the right key brings the Max.- and Min.-values to the lower display. After 5 seconds, the analog signal is indicated again. Reset With RESET, the Max.- and Min.-values are set to actual. Zero SET The zero is set to the applied pressure. Zero ReS Restores the instrument back to factory settings. Units The pressure values can be displayed in the following units: bar, mbar/ hPa, kPa, MPa, PSI, kp/cm2. Programming the analog output via the front keys OUTP SETT This sub-menu is used to configure the analog output within the compensated range. The functions can only be accessed by entering a code. ZERO Executing ZERO when pressure is applied sets the analog output to 4 mA. FS Executing FS when pressure is applied sets the analog output to 20 mA. FACT SETT The analog output is set back to factory settings. Programming by PC The communication with the BUS-capable instrument takes place with the KELLER READ30/ PROG30 software and a KELLER converter (K104B, K107,…) via the RS 485 interface, allowing to read out the pressure values and the instrument characteristics. The analog output can be programmed without applying pressure to the instrument. Optional accessories: - Protective rubber covering - Carrying bag Plug Assignment SpeCifiCationS Pressure Ranges, Resolution: Range Resolution 0…4 bar abs. 0…30 bar abs. 0…300 bar 0…700 bar 0…1000 bar 1 mbar 10 mbar 100 mbar 200 mbar 200 mbar PAA PAA PA PA PA Accuracy RT (room temperature) * Total Error Band (0…50 °C) Storage Temperature Compensated Temperature Range Supply Output Measuring Rate Display Rate Pressure Connection Electrical Connection Protection, CEI 529 Diameter x Height x Depth Weight < 0,1 %FS < 0,2 %FS -10…60 °C 0…50 °C 8…28 VDC 4…20 mA (2 wire) / RS 485 up to 90 times/sec. 2 times/sec. G1/4” Binder 723 (back entry) IP65 76 x 125 x 50 mm ≈ 210 g Output Function Binder 723 4…20 mA OUT /GND 1 (2 wire) +Vcc 3 Interface RS485A 4 RS485B 5 * Including linearity, repeatability and hysteresis. Subject to alterations 07/07 KELLER AG für Druckmesstechnik St. Gallerstrasse 119 CH-8404 Winterthur Tel. +41 (0)52 - 235 25 25 Fax +41 (0)52 - 235 25 00 KELLER Ges. für Druckmesstechnik mbH Schwarzwaldstrasse 17 D-79798 Jestetten Tel. +49 (0)7745 - 9214 - 0 Fax +49 (0)7745 - 9214 - 60 Companies approved to ISO 9001:2000 www.keller-druck.com

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