Mesalabs 90XL User manual

90XL™ Meter

User’s Guide

Part No. 901120027 Rev H

This Page Intentionally Left Blank

Table of Contents

DESCRIPTION ..................................................................................................................4

II.

INDICATIONS FOR USE ...................................................................................................4

III.

SAFETY INFORMATION ...................................................................................................5

IV.

GENERAL OVERVIEW......................................................................................................6

FEATURES, COMPONENTS, AND CONTROLS ..............................................................7

A. Display Module Holder and IV Pole Holder..................................................................8

B. Key and Symbol Descriptions ......................................................................................9

C. 90XL Screen Flow Diagram .......................................................................................10

D. 90XL Display Screens................................................................................................11

1. MAIN Screen Overview ...................................................................................11

2. MENU Screen Overview..................................................................................12

VI.

OPERATINGINSTRUCTIONS.........................................................................................13

A. General ......................................................................................................................13

B. How to Connect / Disconnect a Sensor Module.........................................................14

C. Meter Configuration ...................................................................................................15

D. Changing the Units of Measure..................................................................................16

E. How to Take Measurements ......................................................................................18

1. Conductivity and Temperature Measurements ................................................18

2. pH Measurements ...........................................................................................18

3. How to Take Pressure Measurements .............................................................19

F. How to Verify Sensor Module Calibrations..................................................................21

1. 90XL Conductivity/Temperature Sensor Module .............................................21

2. 90XL pH Sensor Module..................................................................................23

3. 90XL Pressure Calibration Verification ............................................................24

G. Timer Function ...........................................................................................................25

VII.

CALIBRATION INSTRUCTIONS .....................................................................................26

A. General Information ...................................................................................................26

B. Resetting Factory Defaults (Applies to all module types)...........................................26

C. How to calibrate the conductivity/temperature sensor module...................................27

1. Low Range Conductivity Calibration................................................................28

2. Mid-Range (Standard) Conductivity Calibration...............................................29

3. High-Range Conductivity Calibration...............................................................31

D. How to Calibrate the pH Sensor Module....................................................................33

E. How to Calibrate the Pressure Sensor Module ..........................................................35

VIII.

CLEANING, DISINFECTION, AND STORAGE ...............................................................36

IX.

BATTERY INFORMATION ..............................................................................................37

90XL ACCESSORIES......................................................................................................38

XI.

TROUBLESHOOTING.....................................................................................................40

XII.

USER ASSISTANCE AND FACTORY SERVICE ............................................................41

XIII.

90XL SPECIFICATIONS..................................................................................................42

XIV.

LIMITED WARRANTY .....................................................................................................43

DESCRIPTION

The 90XL meter is designed to be used by hemodialysis professionals to measure and display

readings of conductivity, temperature, pH, and pressure of the dialysate fluids used in

hemodialysis delivery systems.

The display module includes the LCD display as well as the user interface. It is used in

conjunction with specific measurement sensor modules that contain the appropriate sensor for

the desired measurement. The following sensor modules are currently available:

• Conductivity / temperature

• pH

• Pressure (Gauge or differential)

The multichannel LCD screen allows the display of up to 4 simultaneous readings from any

combination of sensor modules.

The 90XL timer function allows routine event timing.

NOTE: Throughout this User’s Guide, the terms 90XL Instrumentation system and 90XL meter

are equivalent descriptors for this device.

II.

INDICATIONS FOR USE

The 90XL instrumentation system is intended for use by hemodialysis professionals to

measure

the conductivity, temperature, pH, and pressure of the dialysate solution associated with

hemodialysis delivery systems. Water purification specialists may also use the 90XL meter to

verify proper characteristics of the water used in hemodialysis. These parameters are key

indicators of system performance that require periodic monitoring and adjusting to maintain safe

and effective hemodialysis systems.

III.

SAFETY INFORMATION

WARNINGS AND CAUTIONS

WARNING:

The 90XL Display Module and its attached sensor modules should never be used

without first verifying accuracy of measurement functions. Using the device without verifying

accurate function could result in improper calibration of the dialysis delivery system. An

improperly calibrated dialysis delivery system could result in compromised dialysis treatment(s)

and/or patient injury.

Mesa Labs recommends verifying sensor module calibration using National Institute of

Standards and Technology (N.I.S.T.) traceable reference standards before use or whenever

inaccurate readings are suspected.

WARNING:

The device is not suitable for use in a potentially explosive environment. The

device cannot be used inside an oxygen tent.

CAUTION:

Use only sodium chloride (NaCl) standard solution. The conductivity/temperature

sensor module is temperature-compensated for NaCl solution. Other solutions, such as

potassium chloride (KCl), may result in an inaccurate calibration.

CAUTION:

DO NOT use the 90XL Instrumentation System in place of the dialysis delivery

system’s primary sensors, controls, and/or monitors.

CAUTION:

DO NOT submerse your 90XL display module or the sensor module connector

ends in liquids, as this may result in damage to the instrument and/or the sensor modules.

CAUTION:

DO NOT use abrasive cleaning agents and/or full-strength bleach or acid to clean

the display module or sensor modules, as this will cause damage.

CAUTION:

DO NOT open the display module or sensor modules. There are no user-

serviceable parts inside and it will void the warranty.

CAUTION:

Federal (USA) law restricts this device to sale to or by order of a physician.

CAUTION:

Dispose of this device properly.

It should not be disposed of in a landfill.

WARNING:

The user can be exposed to the following materials when using this device:

Polyester, Aluminum, Acrylic, Glass, Natural Polypropylene, *Noryl

, Stainless Steel, Santoprene,

Silicone, ABS Plastic, Polycarbonate Plastic, Powder Coat Paint. No latex or latex containing

materials are used in the manufacture of the device.

*Noryl

is a registered trademark of SABIC Innovative Plastics IP B.V.

IV.

GENERAL OVERVIEW

The 90XL meter is a portable, multifunction meter designed to measure the conductivity,

pH,

temperature, and pressure of the dialysate fluids associated with hemodialysis delivery systems,

and of the water used in hemodialysis.

The display module houses the electronic circuitry, navigation keys, digital display, and

rechargeable lithium-ion battery. The four navigation keys are labeled by the display according to

context.

The individual sensor modules contain the appropriate sensors and circuitry for measuring the

desired parameter of the dialysate solution or hemodialysis water. The sensor modules attach to

the display module with cables that plug into connectors on the meter. Up to four different sensor

modules may be simultaneously connected to the display module for the desired measurements.

Measurements for conductivity and temperature are taken as the solution flows through the

dialysate lines to which a sensor module is connected. pH measurements may be taken by

using the pH sensor module directly from a container using the dip configuration. For water

purity measurements, a water sample is removed from the water purification system via a valve

and then tested using an appropriate sampling method. The 90XL pressure sensor module can

be used to verify the accuracy of arterial and venous monitors, measure negative pressure and

differential pressure of the delivery system fluid.

In-Line method using adapters

(Condo/temp, Pressure)

Dip sample method for pH

measurement

Sample tray and syringe for

conductivity measurement

FEATURES, COMPONENTS, AND CONTROLS

Sensor module measurements are shown on the display module screen. Using the navigation

keys, the user may access numerous display screens and views to select individual functions,

such as:

Adjust date and time

Adjust screen contrast and brightness

Select units of measure for readings

Obtain detailed information about a

sensor module

Calibrate sensor modules

Restore factory default values

Time events

Access help screens

Select auto-off time

Navigation Keys

LCD

Display

Conductivity/Temp Sensor Module

pH Sensor Module

and probe

Pressure Sensor Module

Sensor Module

Connections

A. Display Module Holder and IV Pole Holder

The Display Module is supplied with a protective holder. The holder may be used as a tilt stand

a flat surface, it may be used with the supplied IV Pole Holder to mount the Display Module

on an IV pole, or the Display Module may be inserted with the LCD and buttons facing inside to

protect it during transport and storage.

Case holder for the Display Module Case holder used as a tilt stand on a flat

surface

Place the Display Module in the case/holder The IV Pole Holder conveniently slips into

with the screen side down as a protector slots in the back of the case/holder

B. Key and Symbol Descriptions

SCROLL UP A LIST OF

SELECTIONS, SCROLL UP

ONE LINE IN HELP

START THE TIMER

FUNCTION

SCROLL DOWN A LIST OF

SELECTIONS, SCROLL

DOWN ONE LINE IN HELP

STOP THE TIMER

FUNCTION

SCROLL DOWN AN ENTIRE

PAGE IN HELP

CHANGE THE POSITION OF

THE READINGS IN DUAL

CHANNEL DISPLAY

SELECT THE CHANNEL OF

INTEREST ON THE MAIN

SCREEN

RETURN TO THE

PREVIOUS SCREEN

RETURN TO THE MAIN

SCREEN

PRESS TO MANUALLY

TURN OFF THE SYSTEM

ACESS THE SYSTEM MENU

PRESS TO DISCONITUE OR

RESTART A CALIBRATION

PROCEDURE

RESET THE TIMER

FUNCTION TO ZERO

PRESS TO SAVE A

SETTING UNTIL THE UNIT

IS TURNED OFF

SAVE A SELECTED

PARAMETER

ADVANCE TO THE NEXT

CALIBRATION STEP

SELECT A MENU ITEM

C. 90XL Screen Flow Diagram

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