281C
Features
- 1% Error band over -20° to 100°C
- Ex II 1G: Eex ia IIC T4 (-20° to 75°C)
- Ranges from 0.5 to 400bar
- All stainless steel and wetted parts
The Intrinsically Safe 281C series offers high performance for critical measurements. Available in a choice of standard or custom designed packages, the 281C utilises Gems CVD sensing technology with ASIC to provide optimum performance while the all stainless steel wetted parts ensure media compatibility.
Specifications
Input
- Pressure Range: Vacuum to 400bar G (6000 psi) Gauge datum only
- Proof Pressure: 4 x Full Scale (FS) (<1% FS Zero Shift)
- Burst Pressure: >35 x FS <=4bar (60psi)
>20 x FS >=40bar (600psi)
>5 x FS <=400bar (6000psi) - Fatigue Life: Designed for more than 100 million FS cycles
Mechanical Configuration
- Wetted Parts: 17-4 PH Stainless Steel
- Enclosure: 316 SS, 17-4 PH SS
IP65 for elec. codes A, B, C, G (with connector fitted) D, 1, 2, 3
IP67 for elec. codes F
IP68 for elec. code M
IP30 for elec. code 3 with flying leads - Vibration: 35g peak sinusoidal, 5 to 2000Hz
- Acceleration: 100g steady acceleration in any direction 0.032%FS/g for 1bar (15psi) range decreasing logorithmically to 0.0007% FS/g for 400 bar (6000 psi) range.
- Shock: Withstands free fall to IEC 68-2-32 procedure 1
- Approvals: Ex II 1G ; Eex ia IIC T4
- Weight: Approx. 100grams (additional cable; 75g/m)
Performance
- Supply Voltage Sensitivity: 0.01% FS/Volt
- Long Term Drift: 0.2% FS/year (non-cumulative)
- Accuracy: 0. 5% FS typical
- Thermal Error: 2.0% FS typical
- Compensated Temperatures: -20° to 80° (-5° to 180°F)
- Operating Temperatures: -40° to 125° (-40° to 260°F) for elec. Codes A, B, C, 1
-20° to 80° (-5° to 180°F) for elec. Codes 2, D, G, 3
-20° to 50° (-5° to 125°F) for elec. Codes F - Zero Tolerance: 1% of span
- Span Tolerance: 1% of span
Millivolt Output units
- Output: 100mv ±1mV
- Supply Voltage: (Vs) 10Vdc (15Vdc max.) Regulated
- Bridge resisitance: 2600-6000ohms
Voltage Output units
- Supply Voltage: (Vs) 1.5Vdc above FS output to 35Vdc @ 6mA
- Supply Voltage Sensitivity: 0.01% FS/Volt
- Min. Load Resistance: (FS output / 2) Kohms
- Current Consumption: approx 6mA at 7.5V output
Current Output units
- Output: 4-20mA (2 wire)
- Supply Voltage: (Vs) 24Vdc, (7-35Vdc) Above 100°C supply limited to 24Vdc
- Supply Voltage Sensitivity: 0.01% FS/Volt
- Max. Loop Resistance: (Vs-7) x 50ohms