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HDI 2021 - User Manual

HDI 2021
11 pages
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Houston Digital Instruments, Inc. 7240 BRITTMOORE RD ● Houston, TX 77041 Ph 713-688-8555 Fx 713-688-2228
HDI 2021 4-20mA
Transmitter
(Custom designed top pictured above. Unit may vary)
Operation and
Maintenance Manual
Revision: 3
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Summary

General Information

General Information

Manual covers installation, operation, maintenance, and calibration of the HDI 2021 Transducer Assembly.

Unpacking and Inspection

Procedures for checking received items against the packing list and reporting damage to the freight forwarder.

Precautionary Information

Guidelines for safe handling and storage to prevent damage, especially to the pressure sensor, to avoid voiding the warranty.

Personnel Qualifications

Specifies that experienced personnel are required for handling, installation, and maintenance, with optional schooling available.

Systems Description

Systems Description

Describes the transducer as an embedded strain gauge in a stainless steel case, housed in hammer unions or flanges.

Systems Components

Details the main parts of the system, including pressure transducers and cables, and their types.

System Capacities

Lists pressure ratings for transducers, including over-pressurization capabilities for different units.

Installation

Components

Details the transducer and cable components, including mounting instructions and cable length recommendations.

Mounting Components

Describes mounting the pressure transducer housing using standard practices, with care to protect the transducer pill.

Theory of Operation

Pressure System

Explains the system comprises transducer and cable, using a Wheatstone Bridge Strain Gauge to convert pressure to an electrical signal.

Factory Preset Calibration

States the HDI 2021 is factory preset and requires no periodic calibration, based on a strain gauge design concept.

Maintenance

Guidelines

Emphasizes maintaining cable integrity, visual checks for abuse, periodic cleaning, and scheduling calibrations if required.

Certifications

CSA Certificate and Tag

Presents the CSA Certificate of Compliance for the products, detailing relevant standards and issue dates.

CSA Certification Markings

Shows the CSA certification markings for the Gauge Head and Sensor components, including safety classifications.

ATEX Certificate and Tag

Presents ATEX certification markings for the Gauge Head and Sensor components, specifying intrinsic safety details.

Warranty

Warranty Terms

Details the one-year warranty period, HDI's obligation to replace or repair defective parts, and conditions for claims.

HDI 2021 Specifications

General IconGeneral
BrandHDI
Model2021
CategoryTransmitter
LanguageEnglish