1056-02-25-38-HT EMERSON

1056-02-25-38-HT EMERSON Input module

Brand：Emerson Model number：1056-02-25-38-HT

Country of origin: United States Product weight：0.55kg

HS code：8517623990

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Product Details：

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The Emerson Rosemount 1056-02-25-38-HT is a specialized configuration of the Rosemount 1056 Dual-Input Intelligent Analyzer. This multi-parameter instrument is designed to provide high-performance liquid analysis for a wide range of industrial applications. The 1056 model is widely recognized for its "plug-and-play" architecture, allowing users to measure one or two parameters simultaneously in a single transmitter. This specific model code (02-25-38-HT) defines a unit configured with specific power options, measurement inputs, and communication protocols.

Product Specifications

Model Series: Rosemount 1056 Dual-Input Intelligent Analyzer
Power Supply (Code 02): Configured for 24 VDC operation with four alarm relays.
Measurement Input 1 (Code 25): Configured for Toroidal Conductivity measurements. This uses inductive sensors which are ideal for high-conductivity liquids or those containing suspended solids.
Measurement Input 2 (Code 38): Configured for 4-20 mA Current Input. This allows the analyzer to receive an external signal from another transmitter, which can be used for secondary data or proportional control.
Communication/Output (Code HT): Equipped with HART digital communication overlaid on the 4-20 mA analog signal. This enables remote configuration and advanced diagnostics via HART handheld communicators or Asset Management Solutions (AMS) software.
Display: Large, high-contrast back-lit LCD that displays up to four lines of data.
Enclosure: NEMA 4X/IP65 rated, constructed from robust polycarbonate for chemical resistance.
Mounting: Designed for panel, pipe, or surface mounting.

Product Advantages

Dual-Parameter Capability: The 1056 allows for the monitoring of two different process variables in one device, significantly reducing the cost per loop and saving panel space.
Inductive Conductivity Measurement: The Toroidal Conductivity input (Code 25) is exceptionally reliable in harsh environments. Because the sensor does not have electrodes in direct contact with the process, it is resistant to fouling, coating, and corrosion.
Intelligent Diagnostics: The analyzer provides continuous self-monitoring and alerts the user to sensor faults or electronic failures. The HART (HT) option enables deep-dive diagnostics for predictive maintenance.
Easy Configuration: Features a user-friendly menu in multiple languages and a "Quick Start" programming sequence that simplifies initial setup and commissioning.
Extreme Accuracy: Advanced electronics provide high-resolution measurements and temperature compensation for precise process control.

Important Considerations and Precautions

Proper Power Connection: Since this specific model (Code 02) is built for 24 VDC, applying AC line voltage (115/230 VAC) will cause immediate and permanent damage to the internal circuitry.
Sensor Compatibility: Ensure that the toroidal conductivity sensors used with Input 1 are compatible with the Rosemount 1056 platform. Non-compatible sensors may lead to inaccurate readings or hardware errors.
Environmental Sealing: To maintain the NEMA 4X/IP65 rating, all cable glands and unused conduit openings must be properly sealed to prevent moisture and dust from entering the housing.
Calibration Requirements: Regular calibration of the conductivity input is necessary to maintain accuracy, especially if the process medium is prone to extreme temperature swings or chemical changes.
Hazardous Area Verification: Check the specific certifications on the nameplate before installing the unit in explosive atmospheres. While the 1056 series has various approvals, the configuration must match the local area classification.

Product Applications

The Rosemount 1056-02-25-38-HT is widely utilized in heavy industrial and chemical processing environments where reliable liquid analysis is critical.

Chemical Processing: Monitoring high-concentration acids, bases, and salts using the toroidal conductivity sensor, which is more durable than traditional contact sensors in corrosive media.
Pulp and Paper: Measuring black, green, or white liquor concentrations in various stages of the pulping process.
Water and Wastewater: Monitoring industrial discharge or influent conductivity to detect spills or changes in chemical loading.
Power Generation: Used in cooling tower blowdown control and demineralizer regeneration monitoring.
Food and Beverage: Clean-in-Place (CIP) systems where high concentrations of cleaning agents (caustics and acids) are used and need to be accurately measured for concentration control.
Signal Integration: The 4-20 mA input (Code 38) allows the analyzer to act as a hub for other process variables like flow or pressure, consolidating data for the control room.

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