Rosemount Analytical Hx338+ Quick Start Guide
Quick Start Guide
LIQ-QSG-338+, Rev BB
January 2018
Rosemount™ Hx338+
Steam Sterilizable and Autoclavable Pre-Pressurized pH Sensor
Essential instructions
Read this page before proceeding!
Emerson designs, manufactures, and tests its Rosemount products to meet many national and international standards. Because
these instruments are sophisticated technical products, you must properly install, use, and maintain them to ensure they continue
to operate within their normal specifications. The following instructions must be adhered to and integrated into your safety
program when installing, using, and maintaining Rosemount products. Failure to follow the proper instructions may cause any one
of the following situations to occur: loss of life, personal injury, property damage, damage to this instrument, and warranty
invalidation.
• Read all instructions prior to installing, operating, and servicing this product. If this instruction manual is not the correct
manual, call 1-855-724-2638, and we will provide the requested manual. Save this manual for future reference.
• If you do not understand any of the instructions, contact your Emerson representative for clarification.
• Follow all warnings, cautions, and instructions marked on and supplied with the product.
• Inform and educate your personnel in the proper installation, operation, and maintenance of the product.
• Install your equipment as specified in the installation instructions of the appropriate manual and per applicable local and
national codes. Connect all products to the proper electrical and pressure sources.
• Install your equipment as specified in the Installation section and per applicable local and national codes. Connect all
products to the proper electrical and pressure sources.
• To ensure proper performance, use qualified personnel to install, operate, update, program, and maintain the product.
• When replacement parts are required, ensure that qualified people use replacement parts specified by Rosemount.
Unauthorized parts and procedures can affect the product's performance and place the safe operation of your process at
risk. Look alike substitutions may result in fire, electrical hazards, or improper operation.
• Ensure that all equipment doors are closed and protective covers are in place, except when maintenance is being performed
by qualified people, to prevent electrical shock and personal injury.
About this document
Revision level Date Notes
A 8/2017 This is the initial release of the Quick Start Guide.
B 9/2017 Updated wiring diagrams.
BA 11/2017 Added Section 4.3. Updated 1056, 56, and 1057 wiring diagrams.
Contents
Contents
Chapter 1 Plan ..................................................................................................................................1
1.1 Electrode preparation .....................................................................................................................1
1.2 Storage and handling ..................................................................................................................... 1
1.3 Specifications .................................................................................................................................2
1.4 Rosemount Hx338+ pH Sensor design specifications ..................................................................... 3
1.5 Rosemount Hx338+ pH Sensor ordering information ..................................................................... 4
Chapter 2 Install ...............................................................................................................................5
2.1 Installing the sensor ....................................................................................................................... 5
Chapter 3 Wiring ............................................................................................................................. 7
3.1 Wiring the Rosemount™ Hx338+ pH Sensor ....................................................................................7
Chapter 4 Calibration and maintenance .........................................................................................11
4.1 Two point buffer calibration ......................................................................................................... 11
4.2 Recommended pH sensor standardization ...................................................................................11
4.3 Electrode refresh procedure ......................................................................................................... 12
Chapter 5 Troubleshooting ............................................................................................................ 13
5.1 Cleaning or replacing the electrodes ............................................................................................ 13
Rosemount Hx338+ pH Sensor i
Contents
ii Quick Start Guide
1 Plan
1.1 Electrode preparation
1. Remove electrode from shipping container.
2. Remove the protective boot covering the electrode bulb.
3. Rinse away salt film with clean water and then shake the electrode so that the
internal solution fills the bulb, thus removing any air trapped there.
Note
Do not allow lubricant to coat electrode bulb or reference junction. If it does, wipe it clean
before installation.
1.2 Storage and handling
Plan
Proper storage and handling instructions of the electrodes must be followed to ensure
correct measurements.
1. Store the electrodes in their original shipping containers until needed.
2. Do not store at temperatures below -5 °C (23 °F).
3. Store the electrodes with a protective cap containing KCI solution (PN 9210342).
4. For overnight storage, immerse the sensor in tap water or 4 pH buffer solution.
5. Use the startup and calibration procedure described in Section 4.1 to properly
calibrate the sensors.
6. The standard sensor shelf life is one year from manufacturing date. Follow the
refresh procedure described in Section 4.3 at one year and eighteen months to
extend the shelf life to a maximum of two years.
Rosemount Hx338+ pH Sensor 1
Plan
1.3 Specifications
Rosemount™ Hx338+ pH Sensor SpecificationsTable 1-1:
Rosemount Hx338+ Sensor specifications Materials and units
Operating temperature range 0 to 140 °C (32 to 283 °F)
Pressure range 0 to 6 bar
pH range 0 to 14
Measuring method
Combination electrode pH potential measured against reference electrode
Wetted materials
pH electrode Glass
O-ring EPDM (FDA approved)
Operations parameters
Process connection PG 13.5
Electrical connector Variopol (VP 6.0)
Minimum conductivity of sample 100 µS/cm
Zero-point 0 ±20 mV
Sensitivity 57 - 59 mV / pH at 25 °C (77 °F)
Electrolyte Pressurized
Temperature sensor Pt-100
WARNING!
Do not exceed temperature and pressure limitations of 140 °C (284 °F) and 6 bar.
WARNING!
Before removing the sensor, be absolutely certain that the process pressure is reduced to 0
psig and the process temperature is lowered to a safe level!
WARNING!
CORROSIVE SUBSTANCE
Hydrofluoric acid and the mixture of hydrochloric acid and thiorea is toxic and highly corrosive.
Avoid skin contact; wear protective gloves. Use only in a well-ventilated area. Do not inhale
fumes. In case of an accident, consult a doctor immediately.
2 Quick Start Guide
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