Setra 268 Series Micro Differential Pressure Transmitter
Product Introduction
The Setra 268 Series Micro Differential Pressure Transmitter is a
high-performance instrument built on Setra's unique variable
capacitance sensing technology. It features a stainless steel
diaphragm and a fixed electrode, where pressure changes alter the
capacitance value, which is then converted into a linear DC signal
via a specialized detection circuit. With a minimum measurement
range of 0~25Pa and a maximum of 0~25KPa, it offers reliable
pressure measurement for differential or gauge (static) pressure,
outputting a proportional 4-20mA current signal with a 24VDC
excitation voltage. Its excellent performance-to-price ratio makes
it widely applicable in various industrial fields.
Features
Variable Capacitance Sensing: Utilizes SETRA's proprietary variable
capacitance sensing technology for accurate and stable pressure
measurement.
Durable Construction: Stainless steel subarc welding sensitive
element ensures robustness, and the elastic diaphragm can withstand
70KPa overpressure (positive/negative) without damage.
Temperature Compensation: Equipped with a temperature compensation
circuit, the temperature influence is less than ±0.06%FS/°C within
the 5~65°C range, ensuring stable performance across varying
temperatures.
Multiple Accuracy Options: Standard accuracy is ±1%FS at room
temperature, with optional higher accuracies of ±0.4% and ±0.25%FS
to meet more demanding applications.
On-Site Range Selection: Offers 6 on-site optional ranges,
providing flexibility to adapt to different measurement
requirements.
Cast Aluminum Housing: The cast aluminum housing enhances
durability and protection, suitable for various industrial
environments.
Specifications:
Model: 268
Measurement Type: Differential pressure, gauge (static) pressure
Measurement Range: 0~25Pa to 0~25KPa
Output Signal: 4-20mA
Excitation Voltage: 24VDC
Accuracy: ±1%FS at room temperature; optional ±0.4%FS, ±0.25%FS
Temperature Compensation Range: 5~65°C
Temperature Influence: ≤±0.06%FS/°C
Overpressure Resistance: 70KPa (positive/negative)
Housing Material: Cast aluminum
Applications: Environmental pollution control, clean engineering,
oven pressurization and furnace pass risk control systems, natural
gas and gas pipe network monitoring, underground ventilation
monitoring, thermal power plant air supply system
