HDI 1021/2021 4-20mA Transmitter
User’s Manual
REV 5 – 03/2022
HDI INSTRUMENTS, LLC
7240 BRITTMOORE ROAD, SUITE 119, HOUSTON, TX 77041
+1 (713) 688-8555 PH | +1 (713) 688-2888 FAX
WWW.HDIGAUGES.COM
2
SECTION I
Systems General Information
A. General Information:
This manual describes the installation, operation, maintenance and calibration of
the HDI 1021/2021 Transducer Assembly. 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.
The 1021 product includes HDI's Calibration Certificate and Certificate of
Compliance. The 2021 Series product include the third-party approval
(ATEX/IECEx/CSA) along with HDI's Calibration Certificate and Certificate of
Compliance.
For brevity, we will use the name "2021" to refer to both the 1021 and 2021
products. The 1021 and 2021 Series units are identical for purposes of this user's
manual, unless noted otherwise (E.G., third-party approvals).
B. Unpacking and Inspection:
Upon receipt account for all pieces on the packing list. If any items are missing,
immediately inform the freight forwarder. Inspect all items for damage. If any
items are damaged, immediately inform the freight forwarder and Houston Digital
Instruments, LLC.
C. Precautionary Information:
Assure all directions on the packages are followed during unpacking and handling.
Extra care should be taken to assure 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 VIII 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 schooling if required at their Houston facility or on-site.
