The FOXBORO E69F-T12-R-S is a field-installed current-to-pneumatic signal converter. Its technical specifications include:
- Input signal: Accepts a standard direct current input signal.
- Output signal: Converts the input into a proportional pneumatic output signal for use with other pneumatic instruments or control valves.
- Compact and easy to install: The E69F converter is a small, compact device that can be simply connected to electrical and pneumatic interfaces. It can be easily installed on surfaces, valve yokes, or in a nominal DN50 or 2″ riser pipe.
- Minimal influence from the ambient atmosphere: The galvanometer motor design in the E69F converter provides sufficient clearance between the coil and the housing. Normal atmospheric changes that may cause corrosion and dust particles do not impede the operation of the mechanism, which can sometimes occur in voice coil type instruments.
- Versatile in applications: The selection of input and output signals, separate input ranges, and direct or reverse actions make this converter easily adaptable to a wide range of applications. The output signal makes it particularly suitable for valve applications.
- Reduced impact, vibration, and tilt effects: By utilizing a rigid feedback bending and low-mass components, the effects of vibrations and shocks commonly encountered in process applications are minimized. The statically balanced coil in the unique galvanometer motor significantly reduces the tilt effect.
- Performance Specifications:
- Accuracy: ±1.0% of the output signal code 2 and 3 range; ±2% of the output signal code 7 and 8 range.
- Linearity: ±0.5% of the range, typical value (maximum deviation is limited by the accuracy specification).
- Repeatability: ±0.25% of the range, typical value (maximum deviation is limited by the accuracy specification).
- Hysteresis: ±0.5% of the range, typical value (maximum deviation is limited by the accuracy specification).
- Dead zone: 0.1% of the range.
- Supply pressure influence: The zero offset caused by a change in supply pressure is less than 0.04% per kPa (0.25% per psi) of the range.
- Ambient temperature influence: Within the operating temperature range of 0 to 60°C (32 to 140°F), a change in the ambient temperature of 28°C (50°F) will result in a zero and span shift of ±1.0% or less.
- Tilt effect: When the tilt angle changes by 5 degrees from the vertical direction, the maximum zero offset is 0.25% of the range. This error can be eliminated by calibrating the instrument at the intended installation location.
- Shock effect: When a shock test of 300 m/s² (30 “g”) is performed on the feedback support frame, the maximum zero offset is 0.5% of the range.
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