Omega DMD-476 manual

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Table of contents for the manual

  • Page 1

    ® An OMEGA T echnologies Company User  s Guide http://www .omega.com e-mail:info@omega.com DMD-476 Bridgesensor AC Power ed Signal Conditioner[...]

  • Page 2

    2 Servicing North America: USA: USA: USA: USA: USA: One Omega Drive, Box 4047 ISO 9001 Certified Stamford, CT 06907-0047 T el: (203) 359-1660 F AX: (203) 359-7700 e-mail: info@omega.com Canada: Canada: Canada: Canada: Canada: 976 Bergar Laval (Quebec) H7L 5A1 T el: (514) 856-6928 F AX: (514) 856-6886 e-mail: info@omega.ca For immediate technical or[...]

  • Page 3

    3 Description The Model DMD-476 is a self contained, AC powered signal conditioner for bridge type instrumentation. It contains a precision instrumentation amplifier with isolated, filtered output and a highly regulated, low noise, adjustable output bridge excitation source. The unit is completely encapsulated for use in rugged environments. Featur[...]

  • Page 4

    4 MODEL DMD-476 Block Diagram Mechanical Specifications SWB - Excitation Voltage SWA - Control Switch 1 - A W Se g n a R e r a T F F OV m 5 1 + o t V m 3 - N OV m 5 2 + o t V m 5 1 + 2 - A W St n e r r u C o r e Z F F OA m 4 N OA m 0 4 - A W S5 - A W Se g n a R n a p S N ON OV m 0 5 o t V m 0 4 F F ON OV m 0 4 o t V m 0 2 N OF F OV m 0 2 o t V m 0 [...]

  • Page 5

    5 Getting Started with the Model DMD-476 1. Excitation Supply. If remote sensing is not used, connect +Sense to +Excitation, terminal 3 to 4, and connect -Sense to -Excitation, terminal 1 to 2. 2. Apply power to the DMD-476 and adjust the Excitation supply. Turn SWB-1 “ON” for a fixed 10 Volts. This will set the supply to 10.2 ±2.5% and provid[...]

  • Page 6

    6 Amplifier The amplifier is a true differential input, low drift Instrumentation Amplifier with less than 100pA input current. It has a common mode range of 5 Volts with respect to the - EXCITATION supply terminal and a minimum of 100dB rejection of the common mode voltage. The input amplifier and excitation supply are DC isolated from the AC line[...]

  • Page 7

    7 WARRANTY/DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGAs customers recei[...]

  • Page 8

    8 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA...Of Course! TEMPERATURE þ Thermocouple, R TD & Thermistor Probes, Connectors, Panels & Assemblies þ W ire: Thermocouple, R TD & Thermistor þ Calibrators & Ice Point Refer ences þ Recor ders, Contr ollers & Process Monitors þ Infrared Pyr ometers[...]