Pentair HAFFMANS c-DGM User manual

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HAFFMANS
WWW.HAFFMANS.NL
HAFFMANS
INSTRUCTION MANUAL
CO2GEHALTEMETER
TYPE c-DGM/i-DGM (USA)

c-DGM from software version: 2.04-11
i-DGM from software version: 1.20-06
Essential reading!
Haffmans B.V. is not liable for damage that results from failure to follow the instructions in this manual. Furthermore,
Haffmans B.V. is not liable for writing/typing errors in this publication. The specifications and design of the instrument
may be changed without advance notice.
All rights reserved. Nothing in this publication may be reproduced, stored in an automated retrieval system, or
published, in any form or by any means, whether electronically, mechanically, by means of photocopying, recording,
or any other manner, without express written permission from Haffmans B.V.
Art. no. : 101.061
Release date : 11 August 2016
Version : V02.01-02

HAFFMANS c-DGM/i-DGM
c-DGM/i-DGM Page 5 of 78
Table of contents
1. Technical specifications 7
2. Introduction 11
2.1 Intended use 11
3. Safety 13
3.1 Symbols 13
3.2 Precautionary measures and safety instructions 13
4. General product information 15
4.1 General description 15
4.2 Measurement principle 16
4.3 CO
2
measurement 16
4.4 *O
2
measurement 17
4.5 *TPO measurement 18
5. Installation 19
5.1 Contents of the delivery 19
5.2 Preparation 20
5.3 Units 20
5.4 Time settings 21
5.4.1 Date 21
5.4.2 Time 21
5.4.3 Shut-off time 21
5.4.4 Display contrast 21
5.4.5 Check electrolysis current 22
5.4.6 Display times 22
5.5 Formula and product definition 22
5.5.1 Product 23
5.5.2 CO
2
formula 23
5.5.3 Electrolysis time 24
5.5.4 CO
2
stabilization time 25
5.5.5 *O
2
sample time 25
5.5.6 *TPO package data 25
5.6 Language 26
5.7 ID system/password 26
5.7.1 ID-system (optional) 26
5.7.2 Password 27
6. Operation 29
6.1 General 29
6.2 *Measurement choice 32
6.2.1 *Combined CO
2
/ O
2
measurement 33
6.2.2 Measure only CO
2
35
6.2.3 *Measure only O
2
35

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6.2.4 Continuous *O
2
measurement 35
6.2.5 *Combined CO
2
/ TPO measurement 37
6.2.6 *TPO measurement 38
6.3 Reading the measurement results 39
6.4 Erasing measurement results 39
6.5 Product choice 39
6.6 Charging the battery 40
7. Calibration and compensation 43
7.1 Calibration of the temperature sensor 43
7.2 Calibration of the pressure 43
7.2.1 Calibration instructions 44
7.3 Compensation 46
7.3.1 General 46
7.3.2 Compensation instructions 46
7.4 *Calibration O
2
sensor 47
7.4.1 *Calibration frequency 47
7.4.2 *One point calibration 48
7.4.3 *Calibration with two gases 48
8. Cleaning and maintenance 53
8.1 Daily cleaning 53
8.2 Monthly maintenance 53
9. Faults and repair 57
9.1 Fault list 57
9.2 Replacing the battery pack 58
9.3 *Replacing the O
2
sensor 59
10. Decommissioning, storage and transport 61
10.1 Decommissioning 61
10.2 Storage 61
10.3 Transport 61
Appendix I Formulas 63
Appendix II *Software structure of c-DGM 65
Appendix III Software structure of i-DGM 67
Appendix IV Client service 69
Appendix V Warranty conditions 71
Appendix VI EC Declaration of conformity 73
Appendix VII Replacement parts 75
Appendix VIII Drawings 77

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c-DGM/i-DGM Page 7 of 78
1. Technical specifications
Measurement range
CO
2
: Default : [g/l] : 2.00 to 10.00
: Available : [Vol.] : 1.00 to 5.00
: [% b.w.] : 0.200 to 1.000
: [kPa] : 21.6 to 510.9
: [kg/cm
2
] : 0.02 to 5.21
*O
2
LHO : Default : [ppb w/w] : 0.0 to 2000 (DO)
: Available : [µg/l] : 0.0 to 2000 (DO)
: [ppm w/w] : 0.00 to 2.00 (DO)
: [mg/l] : 0.00 to 2.00 (DO)
: [%a.s.] : 0.00 to 20.00 (gas)
: [%] O
2
: 0.00 to 4.18 (gas)
: [ppm
vol/vol]
: 0 to 41800 (gas)
*O
2
WLO : Default : [ppb w/w] : 0 to 45000 (DO)
: Available : [µg/l] : 0 to 45000 (DO)
: [ppm w/w] : 0.00 to 45 (DO)
: [mg/l] : 0.00 to 45 (DO)
: [%a.s.] : 0.00 to 500 (gas)
: [%] O
2
: 0.00 to 100 (gas)
: [ppm
vol/vol]
: 0 to 1000000 (gas)
Temperature : Default : [
o
C] : -5.0 to 40.0
: Available : [
o
F] : 23.0 to 104.0
Pressure : Default : [barg] : 0.00 to 10.00
: Available : [psi] : 0.0 to 145.0
: [kg/cm2] : 0.00 to 10.20
: [kPa] : 0 to 1000
Precision : CO
2
: [g/l] better than ± 0.05
: [Vol.] : better than ± 0.03
: [% b.w.] : better than ± 0.005
: [kPa] : better than ± 2.0
: [kg/cm
2
] : better than ± 0,02

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* at 20 °C : *O
2
dissolved
LHO (DO)
:[ppb w/w] : ± (1 ppb+2%
of the measured value)
: [µg/l] : ± (1 µg/l +2% otmv)
: [ppm w/w] : ± (0,001 ppm+2% otmv)
: [mg/l] : ± (0,001 mg/l+2% otmv)
: *O
2
in gas : [%a.s.] : ± (0,01%a.s.+2% otmv)
: [%] O
2
: ± (0,002 %O
2
+2% otmv)
: [ppm
vol/vol]
: ± (20 ppm+2% otmv)
:*O2 dissolved
WLO (DO)
: [ppb w/w] :0 – 45000 (<5% otmv
from 100 ppb)
: [µg/l] :0 – 45000 (< 5% otmv
from 100 µg/l)
: [ppm w/w] :0 – 45 (<5% otmv from
0.1 ppm)
: [mg/l] :0 – 45 (<5% otmv from
0.1 mg/l)
: *O2 in gas :[%a.s.] : 0 – 500 (<5% otmv from
1.098 %A.s)
:[%] O
2
: 0 – 100 (<5% otmv from
0.230 %O
2
)
: [ppm
vol/vol]
: 0 – 1000000 (<5% otmv
from 2300 ppm)
: Temperature : [
o
C]
: [
o
F
: ± 0.2
: ± 0.4
: Pressure : [barg] : ± 0.01
: [psi] : ± 0.2
: [kg/cm
2
] : ± 0.01
: [kPa] : ± 1
Maximum pressure during
operation
: [barg]
: [psi]
: [kg/cm
2
]
: [kPa]
: 10.00
: 145.0
: 10.20
: 1.000
Maximum cleaning
temperature (short duration)
: [
o
C]
: [
o
F]
: 60
: 140
Minimum conductivity (CO2
2
measurement)
: [µS/cm] 400

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c-DGM/i-DGM Page 9 of 78
Duration of measurement CO
2
measurement : approx. 55 seconds
*Combined CO
2
/ O
2
measurement
: approx. 120 seconds
*O
2
measurement : approx. 60 seconds
*O
2
continuous
measurement
: meas. every 10 to 999 seconds
*Combined CO
2
/TPO
measurement
: approx. 130 seconds
*TPO meting : approx. 60 seconds
Number of measurements
with full battery
CO
2
measurement : approx. 250 measurements
*Combined CO
2
/O
2
measurement
: approx. 120 measurements
*O
2
measurement : approx. 250 measurements
*O
2
continuous
measurement
: approx. 8 hours
*Combined CO
2
/TPO
measurement
: approx. 120 measurements
*TPO measurement : approx. 250 measurements
Memory : 400 measurements
Battery *c-DGM : 9.6 V, 2500 mAh
i-DGM : 9.6 V, 1300 mAh
Charging time : approx. 6 hours
Voltage : 100 – 240 V ~ 50-60 Hz, 16 W
IP class
c-DGM & i-DGM
power supply c-DGM
& i-DGM
Quick-charger c-
DGM & i-DGM
: IP 67
: IP 67
: IP-67
Dimensions H x W x D : 260 mm x 130 mm x 210 mm
Weight *c-DGM
i-DGM
: 3.2 kg
: 2.8 kg
* only applicable to the c-DGM with oxygen measurement

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c-DGM/i-DGM Page 11 of 78
2. Introduction
2.1 Intended use
The digital content meter (c-DGM and i-DGM) is a portable, chargeable instrument to determine
the dissolved O
2
and CO
2
content of carbonated drinks and the O
2
content in gases.
The content meter is filled with carbonated drink originating from, for example:
-the production process (tanks and piping)
-kegs
-filled bottles and cans
Or gas generated by the production process, for example:
-tanks
-piping
-CO
2
recovery systems
-CO
2
gas supplied
In this manual, "DGM" stands for the c-DGM and/or i-DGM. Descriptions that only apply to the
oxygen measurement of the c-DGM are marked with an asterisk (*).

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c-DGM/i-DGM Page 13 of 78
3. Safety
3.1 Symbols
The symbols Attention!, Warning and Danger have the meaning indicated below in this manual.
Attention! Instructions for correct and effective use.
Warning Incorrect or careless use may seriously damage the
instrument.
Incorrect or careless use may result in DANGER to the user
and the surroundings.
3.2 Precautionary measures and safety instructions
Warning Cleaning products based on chlorite and fluorine must not be
used.
•Never hold the DGM in your hands when the
measurement chamber is pressurized.
•Prevent physical impact to the exterior of the DGM.
•Be sure to prevent the DGM and the power supply from
sustaining any damage, e.g. by falling. If this has
happened, have the device checked by Haffmans or the
local representative.

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c-DGM/i-DGM Page 15 of 78
4. General product information
4.1 General description
The DGM has two types of controls. 1
1. Push buttons on the top of the instrument.
2. Four mechanical component, consisting of:
the handle (pos. 20), 2
the throttle valve (pos. 12), and
the two hose connectors for the sampling hoses.
Fig. 4.1 Service levels
Fig. 4.2 Control buttons
The instrument consists of 4 components that form a single assembly (see Appendix VII,
drawing c-DGM).
A. The electronics housing (pos. 01);
B. The measurement chamber (pos. 02);
C. The battery pack (pos. 11);
D. The plunger block (pos. 06);
Arrow button - Up
Arrow button - Down
“Enter” button

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4.2 Measurement principle
*O
2
measurement
O
2
measurement is based on measuring the luminescence of an oxygen-sensitive layer. The
fluorescence changes depending on the partial oxygen pressure. The quantity of dissolved gas
in the liquid is calculated by using the partial oxygen pressure and temperature.
CO
2
measurement
The measurement of CO
2
is based on Henry's law, which describes the equilibrium between a
gas and a liquid in an enclosed space. The law says that, at a constant temperature, the
quantity of gas dissolved in the liquid is proportional to the partial pressure of the gas above the
liquid.
It is therefore possible to measure the quantity of CO
2
dissolved in a liquid sample by measuring
both the equilibrium pressure of CO
2
above the liquid and the temperature of the liquid. The
concentration is calculated with the CO
2
formula (see Appendix I).
4.3 CO
2
measurement
The handle (pos. 20) operates the lever (pos. 07), which automatically regulates the inlet, the
outlet, and the connection from the expansion vessel to the measurement chamber.
The handle has two positions:
Sampling: The handle is retracted.
The inlet and outlet of the instrument are open and the expansion vessel
is connected to the outlet.
Measurement: The handle is depressed.
The inlet and outlet of the instrument are closed and the expansion
vessel, which functions as a gas reservoir, is connected to the
measurement chamber. Depressing the handle initiates the
measurement.
The throttle valve is located in the outlet of the measurement chamber and regulates the flow of
the product through the measurement chamber.
The measurement results (temperature, pressure, and CO
2
value) are displayed and stored in
the logbook.

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c-DGM/i-DGM Page 17 of 78
4.4 *O
2
measurement
The oxygen sensor (pos. 23) is located behind the inlet (pos. 17) of the DGM and in front of the
inlet to the CO
2
measurement chamber (pos. 02).
There are two different types of oxygen sensor available for the c-DGM. The LHO sensor is
suitable for measuring very accurately at low oxygen concentrations, the WLO sensor is
suitable for measuring for higher oxygen concentration over a wider measuring range.
The oxygen sensor measures the O
2
content of the liquid optically by using the luminescence
measuring principle, where an oxygen-sensitive layer is illuminated with blue light. This causes
molecules in the oxygen-sensitive layer to enter an excited state.
Fig. 4.3 Luminescence when oxygen is not present
When not in the presence of oxygen, the molecules emit red light. When there is oxygen
present, the gas collides with the molecules in the oxygen-sensitive layer. The molecules that
collide with oxygen do not emit light. Through this process there is a link between the oxygen
concentration and both the light intensity and the speed of reduction of the light intensity. The
light intensity increases at higher oxygen concentrations whereby the speed of the intensity
reduction increases.
The oxygen concentration is calculated from the product temperature and the elapsed time
between exposure and illumination (phase shifting).

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4.5 *TPO measurement
When the c-DGM is used in combination with an ISD sampling device, the TPO value can be
determined in a sealed product packet. The traditional Uhlig's method, whereby the DO value is
multiplied by a Z factor (see Appendix I) is used to calculate the TPO value.
The use of Uhlig's method is based on an oxygen balance between the oxygen dissolved in the
liquid and the oxygen in the headspace volume. The closed product package must be shaken
for five minutes to achieve this balance. The package must settle for five minutes after the
package has been shaken, and then a measurement can be taken.

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c-DGM/i-DGM Page 19 of 78
5. Installation
5.1 Contents of the delivery
The o-DGM has been calibrated, checked and tested by Haffmans BV before delivery so that it
is ready for immediate use. It is not necessary to calibrate the instrument.
Make sure the delivery is complete and undamaged.
If the delivery is incomplete or damaged, immediately notify Haffmans B.V. or the
representative/agent designated by Haffmans B.V. The serial number, the order number or the
invoice number for the o-DGM (as issued by Haffmans BV) must be stated in all
correspondence.
Attention! Before beginning any operations with the product you must be
certain that the instrument is complete and that there are no
missing components.
Upon delivery, the product includes the following:
-c-DGM or i-DGM,
-Service set (with tools, replacement parts, and a wide range of voltage adapters),
-Hose set,
-PC communication program “DGM utility” on a CD-ROM,
-RS-232 communication cable (1.5 meters),
-User manual.
Optional:
-Quick-charger for clients who wish to charge the battery pack quickly. The battery pack
must be disconnected from the DGM while it is being charged.
-2x ID keys for users,
-2x ID keys for places.

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5.2 Preparation
Make sure that the DGM is not connected to a sampling point
that produces pressure or pressure impulses exceeding
10 bar.
Connect the hose set.
Method:
1. Lubricate the O-rings (pos. 18) of the hose socket (pos. 17) with a small amount of silicon
grease (from the service set).
2. Slide the hose connections over the hose sockets of the DGM until they click into place.
Pull the hose back until the hose connection becomes locked.
5.3 Units
The units used by the DGM for CO
2
content, pressure, temperature and *oxygen content can be
changed.
The following steps take you to the “Unit” menu:
1. Press “Enter” until the Haffmans logo appears.
Besides the software version number, the o-DGM serial number is also displayed.
2. Press “Enter” again.
This takes you to the main menu.
3. Use the arrow buttons to select the “Configuration” menu and then press “Enter” to open
the menu.
4. Use the arrow buttons to select the “Unit” menu and then press “Enter” to open the
menu.
5. The arrow buttons can be used to select the various submenus. Press “Enter” to select
the “O
2
” menu, the “Temp” menu or the main menu.
6. The arrow buttons can be used to select the following units:
CO
2
: g/l; Vol.; %b.w.; kPa; kg/cm
2
Pressure: bar; psi; kg/cm
2
; kPa
Temperature: °C, °F
*O
2
: LIQ medium (dissolved in liquid) : ppb; ppm; mg/l; µg/l
GAS medium (in gas) : %; %a.s., ppm
7. Press “Enter” again to return to the “Units” menu.