Control Valve Electric Rotary Position Switch Transmitter Linear Steel Material

GE Masoneilan digital positioner satellite SVI Series Digital Valve Positioner with display and Hart Communication

Product Introduction

The 496 Series devices are used for indicating positions in the stroke of a control valve on which they are mounted. The detection can be either on-off, in which the housing is fitted with micro-switches or proximity detectors, or continuous, in which the housing is fitted with an opto-electronic unit. Both functions, on-off and continuous, can be combined. These devices may be mounted on rotary valves such as Camflex* II, MiniTork* II, or V-Max*, or on linear motion valves such as the series 21000 and 41005. The body and cover are made of epoxy-painted anodized aluminum. These devices can be explosion-proof and dust- and water-tight in accordance with ATEX 94/9/EC Directive. Some of them are intrinsically safe. (See the following pages for details.) The absence of mechanical contact in the proximity detectors and the opto-electronic position transmitters produces  • almost complete insensitivity to vibrations and electrical interference, • very low operating friction, • virtually infinite operating life.

Quick Details

Specifications

Internal components for the limit switch and position transmitter are mounted inside an IP66/IP67 enclosure. Performances of position transmitter type 496-857 or 496-857/. and 496-858 or 496-858/. • Output signal: 4-20 mA (2 wires) • Acceptable span on the command axle: from 25° to 90° for rotary or reciprocating valves • Rotation: clockwise or counterclockwise • Linearity: ≤ ± 0.5% for a rotary angle of 25° to 90° (typically ± 0.3% for a rotary angle ≥ 60°) • Hysteresis: ≤ 0.1% • Dead band: ≤ 0.1% • Repeatability: ≤ 0.1% • Total drift in temperature: 0.02 %/°C or 200 ppm/°C (zero and span range) • Operating temperature range: -40°C to +80°C Electrical characteristics and temperature range of the position transmitter with micro-switch(es) or proximity switch(es) are given in the following sections.

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Packaging and Delivery

Export wooden boxes for foreign trade, IPPC sterilized wooden boxes and plywood boxes for export customs inspection-free.  Size: 60*30*40 (cm)

The products will be shipped after receiving the deposit or full payment within 15 working days

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