NES1920-200H Network Switch

Overview

The NES1920-200H is a rugged pressure sensor designed for industrial environments. Manufactured with stainless steel housing and advanced sensing technology, it delivers precise measurements up to 200 bar (2900 psi). Its compact design and multiple output options make it adaptable to diverse systems. Commonly integrated into programmable logic controllers (PLCs) and SCADA systems, this sensor is favored for its long-term stability and resistance to vibration. OEMs in automotive testing and oil/gas industries frequently specify it for critical monitoring tasks.

Structure and Working Principle

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The sensor employs a piezoresistive sensing element bonded to a stainless steel diaphragm. When pressure deforms the diaphragm, the resulting strain alters the element's resistance, converted to an electrical signal via Wheatstone bridge circuitry. Internal temperature compensation ensures accuracy across its operating range. The hermetic seal and IP67 rating protect against moisture ingress, while optional flush diaphragms prevent clogging in viscous media applications. Electrical connections typically use M12 or DIN connectors.

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Key Features

The NES1920-200H stands out with its 0.25% nonlinearity and 10,000,000 pressure cycle durability. Its burst pressure rating exceeds 400 bar, providing a safety margin for transient spikes. Unique to this model is the built-in RFI/EMI shielding, critical for use near variable frequency drives. The sensor also supports custom calibration points and offers optional ATEX certification for hazardous areas. Dynamic response time of <1ms enables real-time system control.

Application Areas

Primary applications include hydraulic power unit monitoring, where it detects pump failures by tracking pressure fluctuations. In HVAC systems, it optimizes chiller performance by measuring refrigerant pressure. Specialized uses involve underwater robotics (pressure housings) and wind turbine pitch control systems. Food-grade versions with 316L stainless steel meet EHEDG standards for dairy and beverage processing. Mobile equipment manufacturers value its shock resistance in construction machinery.

Maintenance and Precautions

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Annual recalibration is recommended for critical applications. Use only compatible cleaning agents—solvents may degrade elastomer seals. Install with proper torque (typically 20-30 Nm for G1/4" threads) to avoid membrane stress. For pulsating pressures, add a snubber or capillary damper. Avoid thermal shock by gradually exposing the sensor to extreme temperatures. Diagnostic LED indicators (on some variants) simplify troubleshooting without disassembly.

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B2B Procurement Guide

Industrial buyers should confirm the exact model suffix (e.g., NES1920-200H/4 for 4-20mA output). MOQs usually start at 50 units, with 8-12 week lead times for customized versions. Consider total cost of ownership: models with gold-plated contacts (code -AU) reduce long-term corrosion issues. Request factory test reports showing temperature cycling results. For global projects, verify regional certifications (CE, UL, CRN). Bulk purchases (500+ units) often qualify for 15-20% discounts.