Rosemount Analytical Hx338+ Operating Manual

Rosemount Hx338+ IQ/OQ Instructions Sheet

LIQ-IQ/OQ-Instruction Sheet, Rev BA

October 2017

Rosemount™ Hx338+

Steam Sterilizable and Autoclavable Pre-Pressurized pH Sensor

Contents

Contents

Chapter 1 Rosemount Hx338+ IQ/OQ Instruction Sheet .................................................................... 1

1.1 Purpose ..........................................................................................................................................1

1.2 Applicable documents ....................................................................................................................1

1.3 Installation Qualification (IQ) ..........................................................................................................1

1.4 Operation Qualification (OQ) ......................................................................................................... 2

1.5 IQ/OQ form .................................................................................................................................... 3

Rosemount Hx338+ IQ/OQ Instructions Sheet i

Contents

ii Rosemount Hx338+ IQ/OQ Instructions Sheet

Rosemount Hx338+ IQ/OQ Instruction Sheet

1 Rosemount Hx338+ IQ/OQ

Instruction Sheet

1.1 Purpose

The purpose of this document is to describe the procedure for an Installation Qualification
(IQ) and Operation Qualification (OQ) for Rosemount Hx338+ pH sensors.

The IQ/OQ may be performed at a customer site by following these instructions.

1.2 Applicable documents

To carry out the IQ/OQ procedures, the following documents must be available:

• Quick Start Guide for the Rosemount Hx338+ sensor

• Instruction Manual for the pH transmitter used to conduct the IQ/OQ

• IQ/OQ Form (Section 1.5)

1.3

Installation Qualification (IQ)

1. Visual inspection.

Check to see if there is any obvious physical damage to the sensor.

No damage = passed, damage = failed.

Note any visible defects.

2. Verification of documentation.

a. Is the final test inspection (Declaration of Quality) for the sensor available?

Attach a copy to the completed IQ report.

b. Is the Quick Start Guide for the Rosemount Hx338+ sensor available? Attach a

copy to the IQ report.

3. Test connection of sensor to transmitter.

With the sensor connected to a pH transmitter according to the instruction manual
for each, perform the following:

a. Remove the protective cap on the sensor and rinse in deionized water.

b. Immerse the sensor in pH 4 buffer and swirl.

c. Monitor the mV value for at least three minutes until stable.

d. mV reading must be positive and over 100 mV to pass.

Record value and note pass or fail.

Rosemount Hx338+ IQ/OQ Instructions Sheet 1

Rosemount Hx338+ IQ/OQ Instruction Sheet

4. If the above steps are completed without any problem, note that the sensor has
passed IQ.

5. Sign and date on the IQ section of the IQ/OQ Form (Section 1.5) .

1.4 Operation Qualification (OQ)

This test verifies the slope and offset of the pH sensor are within specification.

1. Perform a two-point calibration as directed by the transmitter instruction manual.

2. Use buffers of pH 7 and pH 4.

3. Make sure to rinse the sensor carefully when moving the sensor from one buffer to
another.

4. Make sure that the mV reading has stabilized in one buffer solution before moving
on to the second buffer solution.

5. Once the calibration is completed, verify the sensor slope and offset which should
be available from the calibration menu of the transmitter.

a. Offset must be between -20 mV and +20 mV to pass.

b. Slope must be between 50.3 mV/pH unit and 65.0 mV/pH unit to pass (or 85% to

110% on some transmitters).

6. If the above steps are completed without any problem, note that the sensor has
passed OQ.

7. Sign and date on the OQ section of the IQ/OQ Form (Section 1.5).

2 Rosemount Hx338+ IQ/OQ Instructions Sheet

1.5 IQ/OQ form

Rosemount Hx338+ IQ/OQ Instruction Sheet

Rosemount Hx338+ IQ/OQ Instructions Sheet 3

Rosemount Hx338+ IQ/OQ Instruction Sheet

4 Rosemount Hx338+ IQ/OQ Instructions Sheet

Rosemount Hx338+ IQ/OQ Instruction Sheet

Rosemount Hx338+ IQ/OQ Instructions Sheet 5

Rosemount Hx338+ IQ/OQ Instruction Sheet

6 Rosemount Hx338+ IQ/OQ Instructions Sheet

Rosemount Hx338+ IQ/OQ Instruction Sheet

Rosemount Hx338+ IQ/OQ Instructions Sheet 7

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LIQ-IQ/OQ-Instruction Sheet

Rev BA

2017

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