Rosemount Analytical Hx438 Specifications
Product Data Sheet
June 2017
LIQ-PDS-Hx438
Rosemount™ Hx438
Amperometric Steam Sterilizable Dissolved Oxygen Sensors
Amperometric Steam Sterilizable Dissolved Oxygen Sensors
The Rosemount Hx438 dissolved oxygen sensor is used in a variety of industries and applications and is designed to meet strict steam
sterilization requirements required by top tier life sciences and food and beverage customers.
Rosemount Hx438 Dissolved Oxygen Sensors
Overview
June 2017
Steam Sterilizable and Autoclavable Design
Allows for fixed or retractable mounting configurations.
Measures after many Steam-in-Place (SIP) applications.
Provides fast and stable readings.
Short polarization time.
Versatile Installation Options
The sensor features a PG 13.5 process connection and is
compatible with insertion mounting assemblies (sold
separately).
Installs easily with quick cable-to-sensor connections.
Easily installs into insertion mounting assembly for mounting
into G 1–¼ in. sockets.
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Sensor Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . .7
Insertion Mounting Assembly . . . . . . . . . . . . . . . . . . . . . . 8
Installation Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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June 2017
Rosemount Hx438 Dissolved Oxygen Sensors
Ordering Information
Rosemount Hx438 dissolved oxygen sensor provides a drift-free signal and maintains
its calibration value for up to 50 steam sterilization cycles. It can be used in the
biotechnology, pharmaceutical, chemical, and food processing industries. Rosemount
Hx438 dissolved oxygen sensor uses a 4-pin connection plug for quick disconnection
from the cable (sold separately).
The sensor can be used with the Insertion mounting assembly or similar assemblies
typically used with large scale batch processes that perform SIP cleaning. For smaller
batch processes, it can be threaded directly into the top plate and autoclaved if
necessary.
NOTE: For clean-in-place (CIP) applications, consult factory.
Table 1. Rosemount Hx438 dissolved oxygen sensors ordering information
Model Sensor Type
Hx438 Amperometric Steam Sterilizable Dissolved Oxygen Sensors
Sensor Length
01 120 mm
Typical Model Number: Hx438-01
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3
Rosemount Hx438 Dissolved Oxygen Sensors
Specifications
Table 2. Rosemount Hx438 dissolved oxygen sensors specifications
Operating Temperature Range 32 to 266 °F (0 to 130 °C)
Maximum Pressure 43 psig (400 kPa abs, 4 bar)
Measurement Range 0 to 20 ppm, 0 to 250% saturation, depending on instrument
Wetted Materials Stainless steel and EPDM
Process Connections PG 13.5 thread
Cable Connector Standard 4-pin connector
Cable Compatibility Standard 4-pin connector cable
Compatible Mounting Accessory Insertion mounting assembly. See
Compatible Transmitters Rosemount transmitter models 56, 1056, 5081, and 1066
Temperature Compensation 22K NTC
Table 3. Insertion mounting assembly specifications (P/N 9160478)
page 8.
June 2017
Mechanical Connection G-1–¼ in.
Total Length 215 mm
Maximum Diameter 57 mm
Material of Construction 316L SS/DIN 1.4435, EPDM
Surface Finish < 16 micro inch Ra
Temperature Range 14 to 284 °F (-10 to 140 °C)
Maximum Pressure 6 bar (87 psi)
Insertion Length 70 mm
Compatible Sensors
Mounting accessory needed for installation PN 9160483 weld-in socket or other G 1–¼ in. threaded socket
Rosemount Hx438 dissolved oxygen sensors
All electrodes with PG 13.5 threads and 120 mm length.
4
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