SEM1000

PROCESS SIGNAL ISOLATORS SEM1000 LOOP ISOLATOR Loop Powered (4 to 20) mA Output Galvanic Isolation 500 V DC Flash Tested 1 KV High Accuracy 0.05% 12.5 mm Wide INTRODUCTION The SEM1000 isolator is designed to be series connected into a new or existing (4 to 20) mA current loop and provide an isolated (4 to 20) mA signal capable of driving into 300 maximum load. The output is powered from the input loop. This isolator requires no user adjustment during commissioning. Minor adjustments can be made to the calibration of the device by means of the two front panel accessible calibration potentiometers. Incorrect connection in the loop will not damage the device as long as the specified maximum currents/voltages are not exceeded. SPECIFICATIONS 20 C MECHANICAL DETAILS INPUT Type Current input 2 wire Loop powered Range (4 to 20) mA (30 mA MAX) Connection Captive clamp screws Protection Reverse connection Cable Size Maximum 4 mm sq solid / 2.5 mm sq stranded Voltage Drop 5.0 V typical, 5.5 V Maximum Case Material Grey Polyamide (Plus output load) 5.5 + (load * 0.02) Flammability To UL94-VO VDE 0304 Part 3, Level IIIA Max Loop Supply 35 Volts Dimensions (60 x 60 x 12.5) mm (67.5 above rail) OUTPUT Type (4 to 20) mA source (Powered from Mounting Snap ontop ha rail (DIN EN 50022-35) input) Load 0 to 300 R (Open circuit limits at approximately 15 V) (All dimensions in mm) GENERAL SPECIFICATION Isolation 500 V DC (flash tested 1 kV) (Isolation method, opto coupler / transformer) Electrical Safety BS EN61010-1 POLLUTION DEGREE 2 60 INSTALLATION CAT II CLASS I Ambient (0 to 70) C (10 to 95) % RH non condensing Accuracy 0.05 % full range output Stability 0.01 % / C Response Time Less than 100 mS to reach 63 % of final value. 60 EMC Tested to BS EN 61326 12.5 Adjustments Zero and Span Adjustment PROCESS SIGNAL ISOLATORS APPLICATIONS SEM1000 SEM1000 Tx + + + IN OUT LOAD 2 + V SEM1000 LOAD 1 SCHEMATIC ORDER CODE: SEM1000 ISOLATION - + + OUT + LOAD Span - SPAN Zero 18 V INPUT OUTPUT (4 to 20) mA (4 to 20) mA SEM1000 ZERO - - + IN Status Instruments Ltd Tel: +44 (0)1684 296818 Green Lane Business Park Fax: +44 (0)1684 293746 Green Lane, Tewkesbury Email: sales status.co.uk Gloucestershire, UK Website: www.status.co.uk GL20 8DE D2434-01-03 CN4956 SEM1000 Data Sheet ISOLATION ISOLATION