HDI 2021 User manual

HDI Instruments, LLC | 4130 Directors Row Houston, Texas 77092 | 713-688-8555 | www.hdigauges.com
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HDI 2021 Pressure Transmitter
Operation and Maintenance Manual
Revision 2.0, December 2018

HDI Instruments, LLC | 4130 Directors Row Houston, Texas 77092 | 713-688-8555 | www.hdigauges.com
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Table of Contents
Section I ........................................................................................................................................................ 3
A. General Information........................................................................................................................... 3
B. Unpacking and Inspection .................................................................................................................. 3
C. Precautionary Information ................................................................................................................. 3
D. Personnel Qualifications..................................................................................................................... 3
Section II ....................................................................................................................................................... 3
A. System Description............................................................................................................................. 3
B. System Components........................................................................................................................... 3
C. Pressure Ranges ................................................................................................................................. 4
Section III ...................................................................................................................................................... 4
A. Installation.......................................................................................................................................... 4
A.1 Transducers .................................................................................................................................... 4
A.2 Cables.............................................................................................................................................. 4
Section IV...................................................................................................................................................... 4
A. Operation............................................................................................................................................ 4
A.1 Pressure System ........................................................................................................................... 4
A.2 Preset Calibration by HDI ............................................................................................................. 5
Section V....................................................................................................................................................... 5
A. Maintenance Guidelines..................................................................................................................... 5
B. Spare Parts List ................................................................................................................................... 5
Section VI...................................................................................................................................................... 6
A. Warranty............................................................................................................................................. 6
Appendix A –Data Sheet

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Section I
A. General Information
This manual describes the installation, operation, maintenance and calibration of the HDI
2021 Series 4-20mA Transmitter. This manual will provide the user with information necessary
to properly utilize the instrument. Included in this manual are all the necessary procedures to
install and maintain this instrument properly.
B. Unpacking and Inspection
Upon receipt account for all pieces on the packing list. If any items are missing, immediately
inform the freight forwarder. If any items are damaged, immediately inform the freight
forwarder and HDI.
C. Precautionary Information
Ensure all directions on the packages are followed during unpacking and handling. Extra care
should be taken to ensure that the pressure sensor, which is mounted in the transducer
housing supplied with the system, is protected from contact with any hard or sharp objects, i.e.
screwdriver, fingernail, etc., during the installation of the sensor. Any evidence of mishandling
or abuse shall void the warranty (see Section VI, Warranty for detailed coverage). Also avoid
any extreme tightening efforts, with a hammer, at installation.
D. Personnel Qualifications
This equipment requires experienced personnel to handle, install and maintain. HDI can
provide technical training if required. Contact HDI’s Service Department for training at the
Houston facility or on-site at the customer’s location.
Section II
A. System Description
The transmitter (sensor) is an embedded strain gauge located in a stainless-steel housing.
The strain gauge is commonly housed in 1502 Hammer Union, 2202 H2S Hammer Union or a
Flange. Any style housing may be specified by the customer, contact HDI for detailed options.
B. System Components
The 2021 Series most commonly consists of the sensor/housing (1502 Hammer Union, 2202
H2S Hammer Union, or Flanged assembly) with a 2’ pigtail and a cable assembly. The housing,
cable length and connector type are specified by the customer.

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A high-grade shipboard approved instrument cable with woven shield is recommended to
reduce noise interference. Other types of cable, including armored cable, are available at
additional cost. Maximum recommended cable length is 200 feet.
C. Pressure Ranges
HDI offers a variety of pressure ranges for the 2021 Series. Each transmitter is rated for the
full range. Transmitters with a pressure range of 10,000 PSI and less are capable of
withstanding a 30% over pressurization without damage to the system. 16,000 PSI transmitters
are capable of withstanding a 10% over pressurization without damage to the system. Pressure
Ranges are as follows:
6,000 PSI 10,000 PSI 16,000 PSI 20,000 PSI
Section III
A. Installation
A.1 Transmitter
The transmitter is to be installed by the customer at the locations deemed most suitable for
such equipment, determined by the housing type (1502 Hammer Union, 2202 H2S Hammer
Union or Flange discussed in Section II, A and B). The pressure system transmitter comes from
the factory as a complete assembly and only requires mounting of the transmitter housing
using standard practices for such installations.
Note: Special care should be taken to ensure the transmitter sensor mounted in the center of
the transducer housing, is not allowed to make contact with any hard and/or sharp object as
the accuracy and the sensitivity could be affected. The transmitter sensor is vulnerable to this
type of contact. Any evidence of mishandling or abuse shall void the warranty.
A.2 Cables
Cabling will be installed using acceptable industry standards for such installations. Care should
be taken during installation to make sure the proper barriers are installed to ensure
certification compliance, as required.
Section IV
A. Operation
A.1 Pressure System
The major components of this system are the transmitter and the cable (communications link).
The transmitter utilizes a four active arm Wheatstone Bridge Strain Gauge which, when excited

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by the current source, will produce an electrical signal that is proportional to pressure applied
to it. The cabling serves act as an interconnect for the transmitter, taking the excitation power
in and carrying away the signal.
A.2 Preset Calibration by HDI
The HDI 2021Series is a digital electronic pressure measurement device designed specifically
for oilfield applications. This system has been factory preset and will not require periodic
calibration.
The baseline for calibration is the current excitation across the bridge. This is preset at the
factory and cannot be changed.
Section V
A. Maintenance Guidelines
Maintain the integrity of the cable and visually check for abuse.
Ensure the system is cleaned and checked regularly for damage. HDI installs an orifice plate to
protect the sensor and help minimize direct contact, but cleaning and checking the system
regularly is required.
Set a schedule for annual calibration and inspection by HDI. Contact the HDI Service
Department for further details.
B. Spare Parts List
Part Number
Description
SUB-068
2021 4-20MA PCB 302 BOARD
SUB-024
1502 SENSOR HOUSING
SUB-025
2202 SENSOR HOUSING
SUB-026
AUTOCLAVE SENSOR HOUSING
SUB-076
1502 HOUSING CUSTOMER SUPPLIED (W/ WINGNUT)
SUB-077
2202 HOUSING CUSTOMER SUPPLIED (W/ WINGNUT)
SUB-095
STANDARD PIGTAIL ASSEMBLY
SUB-096
CERTIFIED PIGTAIL ASSEMBLY
SUB-031
SENSOR 600 BAR 6K 10K
SUB-032
SENSOR 1000 BAR 16K
SUB-035
STANDARD SENSOR TAGS
SUB-036
CSA SENSOR TAG
SUB-037
ATEX SENSOR TAGS
SUB-041
1502 HAMMER UNION WINGNUT
SUB-042
1502 H2S HAMMER UNION WINGNUT
SUB-043
2202 H2S HAMMER UNION WINGNUT
SUB-124
1000B/2000B/2021 SENSOR KIT

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Section VI
A. Warranty
HDI Instruments, LLC. (HDI) warrants this product for a period of one year from the date of
shipment. HDI’s manufactured products to the extent that HDI will replace those parts having
defects in material or workmanship when used for the purpose or specification HDI
recommends for Normal Oilfield Usage. For the purpose of this Warranty, Normal Oilfield
Usage shall be defined as normal, oilfield monitoring applications.
HDI shall not honor the Warranty if any evidence of tampering, misuse or intrusion is indicated
except by an HDI authorized technician or agent.
HDI will replace or repair, as it deems necessary, any products covered by this warranty, after
HDI's examination discloses to its satisfaction, that in fact the products are defective and an
adjustment is required. If an adjustment is required, the amount of the adjustment is the net
sales price of the defective product. No allowances shall be made for labor or expenses of
repairing defective products or damage resulting from same. All products accepted under the
provisions of this warranty shall be shipped prepaid to HDI and returned to the customer
prepaid by HDI. This is to include all applicable custom clearance fees, etc. for inbound
international shipments. All products not accepted under the provisions of this warranty shall
be shipped prepaid to HDI and returned freight collect.
HDI shall not be responsible for repair or replacement of products, resulting from improper
handling, storage, installation, misuse, negligence, or use in a manner contrary to the
recommendations of HDI.
HDI warrants only the products that it sells of Other Manufacturers to the extent of their
warranties. All warranty claims shall be made in writing to the nearest HDI office or authorized
factory representative. HDI makes no other warranty of any kind, expressed or implied, and all
implied warranties of merchantability or fitness for a particular purpose which exceed HDI's
afore-stated obligation are hereby disclaimed by HDI and excluded from this warranty.
This Warranty is non transferable and HDI shall not be liable for any damage, injury, loss to
property or persons resulting from the use of any HDI's products or equipment whether such
damage, injury or loss results from, or is caused by: manner of use, defects in materials or
workmanship or otherwise.

2021 PRESSURE
TRANSMITTER SYSTEM
DATA SHEET
FEATURES
• 4-20mA output
• Field repairable system
• 6,000 psi, 10,000 psi, 16,000 psi
• 2” 1502, 2” 2202, or 9/16” Autoclave x Flanged Connections
• Solid state platform; no uids or moving parts
WELL CONTROL MONITORING AT ITS FINEST
SAFETY
PRECISION
INNOVATION
APPLICATION
The HDI 2021 Pressure Transmitter is an intrinsically safe, certied, eld-repairable 4-20mA transmitter built with high quality components HDI is
known for throughout its line of products. The transducer (sensor) is an embedded strain gauge placed in a stainless steel housing. HDI’s Transmitter
is unique because of its eld repairability. If the pill or internal board are damaged due to use over time, the user is able to order the spare parts
necessary to x the unit quickly onsite, reducing downtime and saving on overall cost. Video tutorials are available to assist in the repair online.
The 2021 Transmitter is commonly housed in a 1502 Hammer Union. However, the customer may specify a variety of housings to suit their application
(2” 1502 Hammer Union, 2” 2202 Hammer Union, or a anged connection). The transmitter is delivered as a complete assembly ready for installation.
All HDI Transmitters provide safety, accuracy, reliability, and low maintenance for the user.
CERTIFICATIONS
• CSA:Intrinsically Safe Class 1, Division 1, Groups A, B, C and D
• ATEX: optional, II 1 G, Ex ia IIC T4
• IECEX: (in process)

2021 PRESSURE TRANSMITTER SYSTEM
DATA SHEET
DIMENSIONS
All dimensions given are in inches and [millimeters] unless
otherwise noted.
SPECIFICATIONS
• Weight: 18.2 lbs (as shown with 1502 hammer union)
• Accuracy: 0.5% of full scale to NIST
• Pressure Range: 6,000 psi, 10,000 psi, 16,000 psi resolutions
• Power: Customer supplied 24 vdc
• Media (Process) Temperature: -30°F to 212°F (-30°C to 100°C)
• Sensor Housing: 2” 1502, 2” 2202, 9/16” Autoclave x Flanged
Connections
• Sensor Protection: Primary and secondary rubber diaphragms
• Media Pressure Port: Fluids compatible with 410 QDT stainless steel
• Maximum 4-20mA Output Cable Length: 250 feet
WELL CONTROL MONITORING AT ITS FINEST
SAFETY
PRECISION
INNOVATION
Specifications subject to change without notice. HDI Instruments, LLC is a registered ISO 9001:2008 company.
Copyright 2015 HDI Instruments, LLC
HDI Instruments, LLC, 4130 Directors Row, Houston, TX 77092 USA
Phone: [phone] | Fax: [phone] | Contact Email: [email protected] | Website: www.hdigauges.com
Version 1.5