IBP HDM99 User manual

HDM99
Dialysis Measuring System
User Manual

The information contained in this documentation can undergo changes
without special announcement. IBP Instruments GmbH takes no
responsibility with this document. The contained software is being
delivered on the basis of a general licence contract or in single license. Use
or reproduction of the software is allowed only in agreement with the
contractual arrangements. Whoever transfers this software and/or this
manual on magnetic tape, diskette or any other media, except for the
purpose of own use, without written authorization of the IBP Instruments
GmbH, is liable to prosecution.
Copyright (C) 1996-2000, IBP Instruments GmbH.
All rights reserved
Publisher:
IBP Instruments GmbH IBP Instruments Inc
Sutelstr. 7A 635 South Orange Avenue.
D 30659 Hannover Sarasota, FL 34236
Manual author:
Werner Pfingstmann
3rd Edition August 2000

Attention
Read these safety instructions before using the HDM99
•Please read the manual before using the HDM99.
•Keep away the device from unauthorized persons.
•Never use the HDM99 with connected battery charger
on a dialysis machine to which a patient is connected.
•Operate the instrument only in a dry environment, and
do not touch it with damp hands. Ensure that no fluids
intrude into the interior of the device or into the sockets
at the front.
•Apply a protection filter to the nozzle for the pressure
measurement .
•Avoid a discharge of static electricity over the sockets.
It could lead to the destruction of your measuring
device. Before touching the sockets and lines that are
connected with them, keep an eye on the discharging of
static electricity.
•Voltages above 40V can be dangerous. Take extreme
care while working with higher voltages.
•To avoid electrical shocks, and/or damage to your
measuring system, do not apply excess voltages above
40 V to the instrument.
•Only calibrate the device if you have understood the
consequences to their full extent.
•Do not open the device.

DELIVERY EXTENT.......................................................................................6
EC-CONFORMITY DECLARATION.............................................................7
GUARANTEE DIRECTIVES...........................................................................8
INTRODUCTION.............................................................................................9
CONNECTIONS................................................................................................ 10
CHARGE CONNECTION .................................................................................... 11
TURNING ON THE DEVICE................................................................................ 13
MAIN MENU ................................................................................................... 13
MEASUREMENT.............................................................................................. 15
TEMPERATURE MEASUREMENT............................................................. 17
CONDUCTIVITY MEASUREMENT............................................................ 18
CONDUCTIVITY AND TEMPERATURE MEASUREMENT.................... 21
FURTHER POSSIBLE MEASUREMENTS..................................................25
PH MEASUREMENT.....................................................................................26
PH-CALIBRATION IN THE MEASURING MODE .................................................... 30
FLOW MEASURING .....................................................................................31
MANAGEMENT OF DIFFERENT SENSORS ........................................................... 31
COUNTER....................................................................................................... 34
POOL MENU..................................................................................................35
VOLTAGE MEASUREMENT -PLOTTER.................................................. 36
VOLTAGE MEASUREMENT -OSCILLOSCOPE ......................................38
BATTERY VOLTAGE................................................................................... 40
INSTALLATION.............................................................................................41
LANGUAGE .................................................................................................... 41
SWITCH-OFF TIME........................................................................................... 41
ADJUST-RESET ............................................................................................... 42
CALIBRATION OF THE HDM99................................................................. 43
ADJUSTMENT................................................................................................. 43
CALIBRATION OF TEMPERATURE MEASUREMENT ............................................. 45
CALIBRATION OF CONDUCTIVITY MEASUREMENT............................................. 47
CALIBRATION OF THE PRESSURE MEASUREMENT.............................................. 51
CALIBRATION OF PH-MEASUREMENT............................................................... 53
PH-CALIBRATION........................................................................................ 54

CALIBRATION OF FLOW............................................................................55
CALIBRATION OF THE VOLTAGE MEASUREMENT ............................57
MAINTENANCE AND CARE OF THE HDM99...........................................58
STORAGE........................................................................................................58
CLEANING......................................................................................................59
CALIBRATION INTERVALS ...............................................................................60
SPECIFICATIONS FOR THE HDM99..........................................................62
RS-232-INTERFACE ......................................................................................64
HDMCMO STARTS BACKGROUND MEASUREMENT........................66
12964.12/ 24.7/ 750/ 7.00/ -0.03/ 0.05/6.12/1200/1000/79131/999999 + CR LF àà
73 SIGNS.........................................................................................................66

Introduction6
Delivery extent
The hardware of HDM99 consists of:
HDM99
Combined electrode conductivity / temperature
Flow-through connector for conductivity/temperature probe
Pressure measuring tube
Voltage measuring cables
Count input measuring cables
Battery charger
Standard solution conductivity 13,63 mS/cm
The documentation of HDM99 consists of this manual.
If you should miss anything, please contact your supplier.

Introduction 7
EC-Conformity Declaration
Hereby we declare that the HDM99 corresponds to the basic requirements
for protection according to the guidelines of the board for the assimilation
of legal regulations about electro-magnetic compatibility (89/336/EWG) of
the member states.
For the rating of the devices in view to their electro-magnetic compatibility
the following norms have been used:
Emission: EN 55022 Class B
Immission: IEC 801-3 Criterion A
IEC 801-2 Criterion A
IEC 801-4 Criterion B
This declaration is responsibly given for
IBP Instruments GmbH
Sutelstr. 7A
30659 Hannover
by
Dipl. Ing. Werner Pfingstmann
Managing director
Hannover, September 30, 1996

8Introduction
Guarantee directives
The existing product is a technical device which contains only modern
electronic components. During the manufacturing exclusively first choice
parts are used. Each device undergoes extensive tests before delivery.
IBP warrants that the device is free from defects in material and
workmanship for a period of 12 months beginning at the date of delivery.
Excluded from the guarantee are damages by improper treatment,
inappropriate usage, by connecting to excess voltages, modifications in the
device or through risks which the user has to cover by a suitable insurance
(fire, water, intrusion, robbery etc.)
All conceivable measures were met to assure the accuracy of this product-
documentation. IBP cannot grant any guarantee for the completeness and
the accuracy of the software and the documentation. IBP is not responsible
for damages (including, but not limited to, damages for loss of business
profits, business interruption, loss of data, and other special, incidental or
consequential damages) which emerge through the usage of the product by
the customer.

Introduction 9
Introduction
HDM99 is an innovative computer processed measuring system with which
nine parameters can be measured:
Conductivity
Temperature
Pressure
pH
Flow
Voltage
Frequency
Period time
Events
The device has been developed for the usage on dialysis machines, but is
also usable in the labor in the environmental measuring technology.
The handling is uncomplicated and follows the motto: Only the manual is
necessary in cases of doubt.
The entire handling is led by dialogues. The calibration of the device by the
user is simple and gives no problems.
The display of measurement results is available n numerical and also in
graphical form.
Via the serial interface the measurements can be called independently of
the current display, and further processed or presented on a PC. For the
fault location at dialysis machines IBP has developed a program that
presents and processes measurements of the HDM99 and of the machine
together. Provided that the dialysis machine is equipped with an interface
according to RS232-or RS485-standard. Drivers for different instruments
are available or in preparation. The program runs under MS-Windows and
is therefore easy to operate.

10 Introduction
Connections
voltage conductivity pressure pH
+
and temperature
_
Voltage
The sockets are intended only for AC and DC voltages up to 40 V. They
are protected up to 80 V.
Conductivity / Temperature
The conductivity measurement is designed for quadropole technology.
Please use exclusively the electrode delivered with the device by IBP.
Pressure
To avoid damages at the pressure probe or inaccuracies in measurement,
ensure that no fluids intrude into the device.
We recommend the application of a protection filter.
pH
The input bushes are intended exclusively for pH-electrodes. Other signals
may destroy the device.

Introduction 11
Flow
The connection is to be found at the right side of the device.
(8pol. connector)
Frequency, Periodicity and Events
The connection on the right side of the device is also used for the
measuring of the flow. The incoming voltage range is +5...+24 V. The form
of the signal should be of a rectangular form and has to be positive.
Charge connection
The charge connection is found at the right side of the device. The
connection is provided with 12 V / 500 mA by the included battery charger.
For safety reasons never use the HDM99 with connected
battery charger on a dialysis machine to which a patient is
connected.

12 Introduction
Combined electrode in Hansen-connector
Do not touch the surface of the electrode with your
fingers.
In the flow-through mode the connector is
suitable for measuring pressure, temperature
and conductivity. In the dip-in mode
temperature and conductivity can be
measured. The preferential position of the
Hansen-connector is vertical, the axial
supply shows downward.
In the flow-through mode the axial supply is
used as input and the radial supply as output
(see illustration). The pressure probe in
HDM99 is fastened to the radial connection
above the input. Before any measurements
you must shake the connector to assure that
any air within the system escapes.
For the dip-in mode open the screw cap at
the upper end of the connector and extract
the combined electrode. You must not
remove the tube covering the probe carrier.
Dip the electrode into the media up to a
level above the borings in the covering
tube. By moving the electrode you assure
that the contained air can escape and the
temperature is well balanced.

Introduction 13
Turning on the device
The device is switched on and off with the keys ON and OFF. In addition
to that, the device automatically switches off when the accumulator is
exhausted, or after the elapsing of an adjustable time.
Main menu
After switching on the device you receive an information menu for approx.
two seconds. After that the system goes back to the last setting. In some
cases you will receive the following main menu.
Activation of the function keys leads to
display of the info-menu
display of the measuring menu
display of the calibration menu
display of the installation menu

14 Introduction
Info
From the root menu via info you receive the following information:
There are device specific data like product name, software version and
version date as well as the serial number of your HDM99.

Measurement 15
Measurement
From the main menu over measuring you will receive the following menu:

Measurement16
Examples for measurement displays
F6
F5
F4
F3
F2
F1
F6
F5
F4
F3
F2
F1
The handling of all menus corresponds to the already explained
operating instructions. The individual menus and sub-menus are
presented and explained below.

Measurement 17
Temperature measurement
Time range
By activation of the function key param. you will receive a menu which
allows to change the time range, in which the course graphic will run
through horizontally once. Long term measurements up to twelve hours are
possible. Since you do not have all possible times presented
simultaneously, a black beam on the right side shows that above, or -like in
the example -further options hide themselves below.
The selected time range is shown inverted. To change the time range,
operate the function keys beside the arrows upward or downward. When
you have selected the suitable time range for your application, return to the
temperature measurement with the activation of ok. The length of the
horizontal axis of the graph now corresponds to the chosen time range.

Measurement18
Conductivity measurement
After activation of the function key param. you will get to the menu which
allows you to change the time range (horizontal axis of the graph) or the y-
range (vertical axis) and also the temperature coefficient. By activation of
the function key for the range to be changed you see the selection menus.
At the time range long term measurements up to twelve hours are possible.
Since you do not have all possible times presented simultaneously, a black
beam on the right side shows that above, or -like in the example -, further
options hide themselves below.
The selected time range is shown inverted. To change the time range,
operate the function keys beside the arrows upward or downward. When
you have selected the suitable time range for your application, return to the
temperature measurement with the

Measurement 19
activation of ok. The length of the horizontal axis of the graph now
corresponds to the chosen time range.
After the choice of the field y-range four fixed measuring ranges can be
selected in the already explained way with the function keys beside the
arrows. If you choose > auto <, the HDM99 automatically adjusts the
measuring range so that an optimal graphic representation of the running
measurement is assured.
With activation of the function key ok you arrive back in the conductivity
measurement. The vertical axis of the course graphic as well as the scale
length of the beam display now correspond to the measuring range you
have chosen.
The temperature coefficient menu point allows many different setting
possibilities. In the parameter menu for conductivity and also conductivity
+ temperature, it is possible to choose from a list of preset temperature
coefficients of various dialysis machine manufacturers. These are listed by
name.
There is also a standard value of 2.07% / °C and a user value. The user
value can be changed in the usual way in the adjustment menu for
conductivity. All settings are permanent until the next change. The selected
setting is shown in the measurement menu.

Measurement20
Basic information about the temperature
coefficient
The temperature coefficient in conductivity measurement is an important
subject that is frequently neglected. The conductivity of a solution changes
with the temperature. As the temperature rises, the conductivity of the
measurement solution increases also. In order to arrive at meaningful
measured values, the display value is compensated to 25°C. Expressed in
another way, the display is always converted to a solution temperature of
25°C. The temperature coefficient with which the display is compensated is
expressed in % / °C.
However, different solutions now unfortunately also have different
temperature coefficients. For the display to be precise, the measuring unit
must therefore be set to the temperature coefficient of the current solution.
The average temperature coefficient for dialysate is 2.07% / °C. A value of
1.97% / °C is frequently used for natural water.
To perfect the chaos, the different manufacturers of dialysis machines also
use different temperature coefficients in their machines.
Baxter 2,20 %/°C
Braun 2,00 %/°C
FMC 2,10 %/°C
Gambro 1,80 %/°C
Hospal 2,07 %/°C
Nikkiso
Bicarbonat 2,02 %/°C
Total conductivity 2,05 %/°C
This gives rise to the following recommendations:
1. You have machines from one manufacturer only:
Use the temperature coefficient that the dialysis machine uses for
compensation
2. You have machines from different manufacturers:
Use as a temperature coefficient a mean value.
2.07% / °C is recommended for this.