Technical Specification - Baker Hughes Masoneilan 496 Series Instruction Manual

3. Technical Specification

Internal components for 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 axis: 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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