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C266 Micro Differential Pressure Sensor
C266 Micro Differential Pressure Sensor
Product details
C266Micro differential pressure sensor/Transmitter
Range: 0-50pa/0-5000pa
0～±25pa/0～±2500pa
◆ Medium: Suitable for air or non-conductive gases
Setra's C266 pressure sensor detects differential or gauge pressure and converts this pressure difference into a proportional electrical output. C266 has a high-level output of 0-5VDC, 0-10VD, or 4-20mA, used for building energy management systems. This sensor can measure the pressure and flow required for building pressurization and air flow control.
The C266 series pressure sensor can provide a range from 0 to ± 50pa to 0 to 5000pa. The static accuracy is 1% Fs at room temperature, and the temperature compensation range is -18 to+65 ℃. The thermal drift outside the temperature compensation range is less than+0.06% FS/℃.
C266 adopts stainless steel argon arc welding sensitive components. A tension stainless steel diaphragm and a fixed electrode form a variable capacitor. Positive pressure causes the diaphragm to move towards the electrode, increasing the capacitance and reducing the pressure. The membrane is kept away from the fixed electrode. This change in capacitance is detected by Setra's unique electronic circuit and converted into a linear DC signal.
The argon arc welding tension sensitive element allows for an overpressure of 69kpa in any direction without damage, and the sensitive element has a good thermal matching coefficient. Improved the temperature characteristics and long-term stability of the sensor.
application
Heating, Ventilation, and Air Conditioning (HVAC)
Energy management system
VAV and fan control
environmental pollution control
Static pipeline and cleanroom pressure
Smoke hood control
Oven pressurization and furnace ventilation control
advantage
24VDC and 24VAC incentives
0-5V, 0-10V, and 4-20mA high-level analog outputs are compatible with all energy management systems
Full protection against misconnection
Internal adjustment circuit allows the use of non regulated power supply
1% accuracy improves the performance of VAV systems
Flame retardant shell (UL94V-0 certified)
Complies with CE standards
Pressure Range and Range Gauge
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one-way
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two-way
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0～50pa
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0～±25pa
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0～100pa
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0～±50pa
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0～250pa
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0～±100pa
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0～500pa
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0～±250pa
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0～1000pa
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0～±500pa
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0～2500pa
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0～±1000pa
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0～5000pa
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0～±2500pa
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performance parameter
C266 Performance Specification
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Accuracy (at constant temperature)
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±1.0%FS
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Nonlinear(* Best fitting straight line)
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±0.98%FS
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delay
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0.10%FS
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non-repetitive
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0.05%FS
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Temperature influence*
Compensation range
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-18～+65℃（0～+150°F）
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midnight/Full range offset%FS/℃（°F）
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±0.06（±0.033）
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*Large linear pressure
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69kpa
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Overload capacity
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range
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Overload capacity
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＜250Pa
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14kPa
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250Pa～625Pa
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35kPa
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＜625Pa
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69kPa
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Preheating drift
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±1.0%FS
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Installation location impact***
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range
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Zero offset (% FS/G)
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0～250Pa
0～1.3kPa
0～7.5kPa
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0.60
0.14
0.06
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*For non-linear, hysteresis, and non repetitive RSS values (square and root)
**The product is calibrated at 21 ℃, and the error caused by high temperature is obtained from this data
***When calibrating the product in the factory, place the membrane vertically and under the influence of 0g
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temperature
Working temperature*
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-18～65°C
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Storage temperature
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-40～85°C
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*The working temperature limit is only applicable to electronic devices, and the pressure medium temperature can be higher or lower
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mechanical parameters
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housing
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Polyester filled with fire-resistant glass (UL94V-0 certified)
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Electrical connection
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Screw terminal post
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Pressure connection
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6.2mm
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weight
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150g (5.3 ounces)
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Electrical data (voltage output type)
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circuit
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3 wires (EXC, OUT, COM)
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Motivation/Output*
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12-30VDC/VAC/0～10VDC**
9-30VDC/VAC/0～5VDC**
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Bidirectional output at zero pressure
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2.5VDC（±50mV）
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Output Impedance
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100Ω
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*Calibrated with a 50k Ω load, it can work when the load is ≥ 50k Ω
**Zero point output: The manufacturer sets it at ± 50mV (optional ± 25mV)
Full range output: The manufacturer sets it at ± 50mV (optional ± 25mV)
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Electrical data (current output type)
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circuit
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2 lines
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output
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4-20mA
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Bidirectional output at zero pressure
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12mA
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electrical load
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0～800Ω***
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*Small power supply voltage (VDC)
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9+0.02 x (additional wire resistance of receiver)
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*High Supply Voltage (VDC)
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30+0.004 x (additional wire resistance of receiver)
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pressure medium
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Used for air or similar non-conductive gases
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*The factory uses a 250 Ω load and a 24VDC power supply for calibration
**Zero point output: The manufacturer sets it at ± 0.16MA (optional ± 0.08mA)
Full range output: The manufacturer sets it at ± 0.16MA (optional ± 0.08mA)
Ordering Guide（C266Selection Code Table
For example:
The product code is2661100LD11T1CThe range of 266 is 0-100pa, and the unidirectional output is 4-20mA. The wiring terminal is connected, and the accuracy is ± 1.0%
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