SG1000D Product Information Description Electro-Sensors SG1000D Valve Position Monitor is a complete position monitoring system housed in a compact and rugged explosionproof NEMA 4X enclosure. It is an encoder-based position sensor providing a 4-20 mA output and is used to measure a rotary process such as a valve position having a clockwise or counter-clockwise rotary movement. The SG1000D works on rotary processes having a full-scale sweep as small as 15 degrees (fully-closed to fully-open), up through those having a full-scale sweep as large as 359 degrees. Principle of Operation The SG1000D has two modes: calibration and normal operating. After installation, a simple calibration procedure is used to program the SG1000D with the encoder values corresponding to the valve’s fully-closed and fully-open position limits. Once programmed, the SG1000D outputs a 4 mA DC signal when the valve is in the fully-closed position, and outputs a 20 mA DC signal when the valve is in the fully-open position. When the valve is at any mid-span position (between fully-closed and fully-open) the SG1000D outputs a signal that is proportionally between 4 and 20 mA. SG1000D Valve Position Monitor • Accurate valve position feedback — 0° to 359° • Precisely measures valve shaft rotary movement • Versatile system — works on powered or manually driven valve shafts • Rugged explosionproof NEMA 4X housing — long life & dependability • Non-volatile memory — retains valve position in the event of a power loss • Interface with a PLC or optional TR400-SGA display unit • UL, CSA & CE approved to applicable standards 6111 Blue Circle Drive Minnetonka, MN 55343 Phone: 952-930-0100 Fax: 952-930-0130 ISO9001:2000 Certified Free Catalog and Application Assistance 1-800-328-6170 Visit Us Online: www.electro-sensors.com TR400SGA RATEMETER ENTER VAR DIAG REV PROG OUT 1 2 OUT ERR KEY REV 100 TR400SGA RATEMETER ENTER VAR DIAG REV PROG OUT 1 2 OUT ERR KEY REV 50 TR400SGA RATEMETER ENTER VAR DIAG REV PROG OUT 1 2 OUT ERR KEY REV 100