EMERSON HD22005-3
EMERSON HD22005-3
EMERSON HD22005-3

EMERSON HD22005-3 | Rosemount Pressure Transmitter

  • Brand:​ Emerson (typically under the Rosemount brand)
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    Model:​ HD22005-3
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    Product Type:​ Pressure Transmitter
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    Series:​ Rosemount 2051 or similar
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    Core Function:​ Measures process pressure and transmits a proportional 4-20 mA signal for monitoring and control in industrial applications.
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    Key Specs:​ Gauge pressure measurement, 4-20 mA output, 2-wire loop powered.
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Part number: EMERSON HD22005-3
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Description

HD22005-3: Product Overview
The EMERSON HD22005-3 is an industrial-grade pressure transmitter, most likely from the renowned Rosemount product line. This device serves as a critical component in process control loops, accurately measuring the pressure of liquids, gases, or steam and converting this physical measurement into a standardized 4-20 mA electrical signal. This signal is then sent to a control system like a PLC (Programmable Logic Controller) or DCS (Distributed Control System) for monitoring, control, and alarming.
Installed directly into process piping via a threaded connection, its primary role is to provide reliable and accurate pressure data to ensure process efficiency, safety, and product quality. The transmitter is built with a robust sensing element, typically a silicon piezoresistive sensor, known for its long-term stability and accuracy. The housing is designed to withstand harsh industrial environments, including exposure to moisture, vibration, and extreme temperatures.

EMERSON HD22005-3

EMERSON HD22005-3

HD22005-3: Technical Specifications
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    Model Number:​ HD22005-3
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    Manufacturer:​ Emerson (Rosemount)
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    Product Type:​ Pressure Transmitter
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    Pressure Type:​ Gauge Pressure (PSIG) – referenced to atmospheric pressure.
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    Output Signal:​ 2-Wire, 4-20 mA DC
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    Power Supply:​ 12-45 VDC (Standard loop power, 2-wire system)
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    Accuracy:​ Typically ±0.5% of span (including linearity, hysteresis, repeatability)
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    Pressure Ranges:​ Available in various ranges (e.g., 0-100 psi, 0-500 psi). The exact range is defined by the full model number.
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    Process Connection:​ 1/2″ NPT female or other standard industrial thread.
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    Electrical Connection:​ 1/2″ NPT conduit entry.
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    Display:​ Optional local indicator (LCD) for easy on-site reading.
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    Wetted Parts:​ 316 Stainless Steel standard (compatible with a wide range of media).
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    Operating Temperature:​ -40°F to +185°F (-40°C to +85°C)
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    Process Temperature:​ Up to 250°F (121°C) with direct mounting.
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    Safety Approvals:​ FM, CSA, ATEX, IECEx (for use in hazardous areas).

    EMERSON HD22005-3

    EMERSON HD22005-3

Core Features & Customer Value
The primary value of this transmitter is its reliability and simplicity. The universal 4-20 mA analog signal ensures easy integration with virtually any control system, minimizing engineering and commissioning time. For maintenance teams, this simplicity translates to straightforward troubleshooting and calibration, reducing downtime.
The device’s robust construction​ ensures accurate and stable performance in demanding conditions, leading to improved process control and reduced maintenance costs. Features like the optional local display allow operators to quickly verify pressures at the point of measurement. For engineers, the wide operating temperature range and availability of hazardous area certifications make it a versatile and safe choice for a vast array of applications, from simple pump control to critical process vessels.
Typical Applications
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    Pump Control:​ Monitoring discharge pressure to protect pumps from dead-heading and to control pump sequences.
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    Tank Level Inference:​ Measuring pressure at the bottom of a tank to determine liquid level.
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    Filter Monitoring:​ Indicating the pressure drop across a filter to signal when cleaning or replacement is needed.
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    Industrial Machinery:​ Providing pressure feedback in hydraulic and pneumatic systems.
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