Setra 268 Series Micro Differential Pressure Transmitter 4-20mA

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