6 | GE Oil & Gas
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Technical Specifications
Functional
Input:
4-20mA (0-100%)
Output:
3-15psi and 15-3 psi or 6-30 psi and 30-6 psi
Minimum output greater than 0�2psi
Supply Pressure:
150psi maximum, minimum 3psi above max required output pressure
Supply Pressure Effect:
Span over full supply pressure range <0�1%
Medium:
Standard instrument quality air to 50 micron
Air Consumption:
<2�5l/min (0�09 scfm) at 50% signal
Operating Temperature:
-40°C to 85°C (-40° F to +185° F)
Relative Humidity:
0 to 100% Relative Humidity
Output Capacity:
>300l/min (12scfm) delivery and exhaust at 100% signal
Maximum Terminal Voltage:
Maximum 6�5Volts
Minimum Operating Current:
Less than 3�5mA
Current Reversal Protection:
No effect within normal 4-20mA range protected to 100mA continuous�
Insulation:
Electrical circuits are isolated from housing� Tested to 725V DC, 100MΩ
Performance
(At 20°C (68°F), 30psi supply, 3-15psi range, for a typical instrument except otherwise stated);
Instrument Accuracy:
mean <0�1%
Independent Linearity:
mean <±0�05% of span
Hysteresis, Resolution & Deadband:
mean <=0�05% of span
Accuracy Rating:
<±0�75% span (including factory calibration error)
Above figures are in accordance with ANSI/ISA 51.1:1993; N.B. Instrument accuracy excludes calibration errors
Temperature Effect:
Span and Zero
Mean temperature coefficient over full operating range –40 to +85°C less than 0�035%
span/degC
Vibration:
<3% of span; 4mm peak-peak 5-15Hz, 2g sine 15-150Hz
Mounting Position:
Integral bracket allows for mounting in any orientation
Long Term Stability:
Span and Zero
Typically better than 0�25% span per year
Electromagnetic Compatibility:
Compliant with EC requirements:
BS EN50081-2: EMC - Generic Emissions Standard – Industrial environment
BS EN61000-6-2: EMC - Generic Standards – Immunity for industrial environments
To meet the EMC specifications, screened cable should be used for installation� The
cable screen should be connected to the internal earth bonding point of the I/P� An
earth strap should also be connected from the external earth bonding point of the
I/P to a common earth point� The cable screen should not be connected at the signal
source when used in IS environments�
Controls:
Span and Zero and tight shut-off trimpots with 10% adjustment
Physical
Air Supply and Output Connections:
1/4
"
NPT supply and output; 1/8
"
NPT exhaust baffles to allow for captured bleed
Electrical: 1/2
"
NPT (M20 option); 2 internal screw terminals for 2�5mm
2
cable
Weight: 2�07Kg
Materials
Aluminium and zinc diecasting with nitrile diaphragms, epoxy powder coat painting as standard� Weatherproof to Type 4X (IP66)
[mounted upright]�
