Kobold DOG-4 User manual

DOG-4-6 electronic option
M0/N0/O0/P0
FLOW COMPUTER FOR CORRECTED GAS VOLUME
Signal input flowmeter - type P: pulse
Signal input pressure - type IA: 4-20mA
Signal input temperature - type TP: PT100 2- or 3 wire
Signal output: 4-20 mA ref. flow rate and pulse ref. volume quantity
Option: Modbus communication

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SAFETY INSTRUCTIONS
 Any responsibility is lapsed if the instructions and procedures as described in this manual are
not followed.
 LIFE SUPPORT APPLICATIONS: The flow computer is not designed for use in life support
appliances, devices, or systems where malfunction of the product can reasonably be expected to
result in a personal injury. Customers using or selling these products for use in such
applications do so at their own risk and agree to fully indemnify the manufacturer and supplier
for any damages resulting from such improper use or sale.
 Electro static discharge does inflict irreparable damage to electronics! Before installing or
opening the unit, the installer has to discharge himself by touching a well-grounded object.
 This unit must be installed in accordance with the EMC guidelines (Electro Magnetic
Compatibility).
SAFETY RULES AND PRECAUTIONARY MEASURES
 The manufacturer accepts no responsibility whatsoever if the following safety rules and precautions
instructions and the procedures as described in this manual are not followed.
 Modifications of the flow computer implemented without preceding written consent from the
manufacturer, will result in the immediate termination of product liability and warranty period.
 Installation, use, maintenance and servicing of this equipment must be carried out by authorized
technicians.
 Check the mains voltage and information on the manufacturer's plate before installing the unit.
 Check all connections, settings and technical specifications of the various peripheral devices with the
flow computer supplied.
 Open the casing only if all leads are free of potential.
 Never touch the electronic components (ESD sensitivity).
 If the operator detects errors or dangers, or disagrees with the safety precautions taken, then inform
the owner or principal responsible.
 The local labor and safety laws and regulations must be adhered to.

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ABOUT THE OPERATION MANUAL
This operation manual is divided into two main sections:
 The daily use of the unit is described in chapter 2 "Operational". These instructions are meant for
users.
 The following chapters and appendices are exclusively meant for electricians/technicians. These
provide a detailed description of all software settings and hardware installation guidance.
This operation manual describes the standard unit as well as most of the options available. For
additional information, please contact your supplier.
A hazardous situation may occur if the FLOW COMPUTER is not used for the purpose it was
designed for or is used incorrectly. Please carefully note the information in this operating
manual indicated by the pictograms:
A "caution" indicates actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the flow computer or connected instruments.
A "note" indicates actions or procedures which, if not performed correctly, may indirectly
affect operation or may lead to an instrument response which is not planned.
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com
Information in this manual is subject to change without prior notice. The
manufacturer is not responsible for mistakes in this material or for incidental
damage caused as a direct or indirect result of the delivery, performance or
use of this material.
© All rights reserved. No parts of this publication may be reproduced or used
in any form or by any means without written permission of your supplier.

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CONTENTS MANUAL
Safety instructions ........................................................................................................................ 2
Safety rules and precautionary measures .................................................................................. 2
About the operation manual ........................................................................................................ 3
Contents manual ........................................................................................................................... 4
1.Introduction ................................................................................................................. 6
2.Operational .................................................................................................................. 7
3.Configuration ............................................................................................................ 10
1 - Total .......................................................................................................................... 15
2 - Flow rate .................................................................................................................... 16
3 - Display ....................................................................................................................... 17
4 - Flowmeter .................................................................................................................. 18
5 - Linearization .............................................................................................................. 19
6 - Temperature .............................................................................................................. 20
7 - Pressure .................................................................................................................... 21
8 - Equation .................................................................................................................... 22
9 - Analog output ............................................................................................................ 23
A - Impuls ....................................................................................................................... 25
B - Communication ......................................................................................................... 25
C - Others ....................................................................................................................... 26
4.Installation ................................................................................................................. 26
5.Maintenance .............................................................................................................. 30
Appendix A:Technical specification of flow computer ..................................................... 31
Appendix B:Problem solving .............................................................................................. 33
Appendix C:Communication variables............................................................................... 34
Appendix D:Factory settings for flow computer ............................................................... 38
6. EU Declaration of Conformance ............................................................................................ 40

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The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you have
purchased. If you need an instruction manual that corresponds to the purchased
product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by post in
paper form against an applicable postage fee.

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1. INTRODUCTION
1.1. General notice
This operating manual provides assistance and instructions to clients of Kobold Messring GmbH for the
installation and configuration of the flow computer when used in combination with a type DOG-…
oscillation flowmeter.
This operating manual is a supplement to existing documents, such as the data sheet and the operating
manual for the DOG-… oscillation flow meter.
This document is subject to change due to technical improvements. This version replaces all previous
versions of the document.
1.2 Device description
The flow computer is a microcontroller-operated display device for the calculation of the standard
volume flow and total volume flow of gases dependent on temperature and pressure. Figure 1 shows a
typical application of the flow computer.
Fig. 1: Typical application for the flow computer.

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The flow computer is installed together with, and pre-wired to, a DOG-… transmitter in a control
box. A connector rail with all required inputs and outputs is provided for the user. The rail’s
connection layout is displayed on the switch box’s safety cover. Electric wiring must be done in
accordance with the wiring diagram following in chapter 4.
The flow computer is preconfigured by the factory. The table containing the factory settings can
be found in annexure D.
The measuring range and the K-factor are pre-set according to client requirements. Linearization
is switched off. The linearization settings should not be altered.
The analogue output (4-20mA) is also factory-calibrated. Please do not change the settings in
menu points 95 and 96, as the calibration points will otherwise be altered.
The pulse output is scaled according to the volume quantity (for example, one pulse every 12m3).
The factory setting is one pulse per m3. The pulse duration can be adjusted between 0.001 and
9.999 seconds. The standard setting is 0.010 seconds.
Volume flow normalization is not active upon delivery of the flow computer and it is unable to
display normalized volume flow without temperature and pressure sensors.
If you wish to measure norm volume flow it is essential that you connect a pressure sensor (4-
20mA) and a temperature sensor (2 or 3-wire PT100). These are not included in the scope of
delivery.
1.3 Commissioning instructions
Before the DOG-… device is used with a flow computer the operator must adjust several
parameters.
1. If you make use of 2-wire temperature sensors you must set “NUMBER WIRES” in menu point 61
to 2.
2. Adjust the measuring range of the analogue pressure sensor used in menu points 72 and 73. The
factory setting for the measuring range is 2.5 bar.
3. If you make use of an absolute pressure sensor the input value for OFFSET in menu point 74
must be set to 0.000 bar.
4. If you enter the standard values in menu 82, 83, 84 and 85, the formula for conversion to the
norm volume flow is activated. It is not essential that the unit be changed from m3/h to the
standardised unit Nm3/h. It has no effect on the calculation of the norm volume flow.
5. You can deactivate the compressibility factor if you set one value in menu points 84 or 85 to zero.
If you wish to deactivate normalization completely you must set all norm values (menu points 82,
83, 84, and 85) to zero.
2. OPERATIONAL
2.1. GENERAL
 The flow computer may only be operated by personnel who are authorized and trained by
the operator of the facility. All instructions in this manual are to be observed.
 Take careful notice of the "Safety rules, instructions and precautionary measures" in the
front of this manual.
This chapter describes the daily use of the flow computer. This instruction is meant for users /
operators.

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2.2. CONTROL PANEL
The following keys are available:
Fig. 2: Control Panel.
Functions of the keys

This key is used to program and save new values or settings.
 It is also used to get access to SETUP-level; please read chapter 3.
 This key is used to SELECT accumulated total.
The arrow-key  is used to increase a value after PROG has been pressed
or to configure the unit; please read chapter 3.
Press this key twice to CLEAR the value for total.
 The arrow-key is used to select a digit after PROG has been pressed or to
configure the unit; please read chapter 3.

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2.3. OPERATOR INFORMATION AND FUNCTIONS
In general, the flow computer will always act function at Operator level. The information
displayed is dependent upon the SETUP-settings. The signal generated by the connected
flowmeter is measured by the flow computer in the background, whichever screen refresh
rate setting is chosen. After pressing a key, the display will be updated very quickly during
a 30 second period, after which it will slow-down again.
Fig. 3: Example of display information during process.
For the Operator, the following functions are available:
 Display ‘calculated flow rate / total’ or only ‘calculated flow rate’
This is the main display information of the flow computer. After selecting any other
information, it will always return to this main display automatically.
Total is displayed at the upper-line of the display and Flow rate and Accumulated Total on
the bottom line.
Possibly, only Flow rate will be displayed with the large 17mm digits; do press the
SELECT-key to read the Total. When "-------" is shown, the flow rate value is too high to be
displayed. The arrows  indicate the increase / decrease of the flow rate trend.
 Clear total
The value for total can be re-initialized. To do so, press CLEAR twice. After pressing
CLEAR once, the flashing text "PUSH CLEAR" is displayed. To avoid re-initialization in this
stage, press another key as CLEAR or wait for 20 seconds.
Re-initialization of total DOES NOT influence the accumulated total.
 Display calculated accumulated total
When the SELECT-key is pressed, total and accumulated total are displayed. The
accumulated total cannot be re-initialized. The value will count up to 99,999,999,999. The
unit and number of decimals are displayed according to the configuration settings for total.
 Display line pressure
After pressing SELECT, the actual measured pressure is displayed.
 Display line temperature
After pressing SELECT, the actual measured temperature is displayed.
RUN

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DISPLAY ALARMS
 Out of Range
When "(-)9999" is displayed, the frequency is out of range of the low or high limit settings.
Fig. 4: Example of Out of Range alarm.
 Alarm 01-03
When "alarm" is displayed, please consult Appendix B: Problem Solving.
3. CONFIGURATION
3.1. INTRODUCTION
This and the following chapters are exclusively meant for electricians and non-operators. In
these, an extensive description of all software settings and hardware connections are provided.
 Mounting, electrical installation, start-up and maintenance of the instrument may only be
carried out by trained personnel authorized by the operator of the facility. Personnel must
read and understand this Operating Manual before carrying out its instructions.
 The flow computer may only be operated by personnel who are authorized and trained by
the operator of the facility. All instructions in this manual are to be observed.
 Ensure that the measuring system is correctly wired up according to the wiring diagrams.
The housing may only be opened by trained personnel.
 Take careful notice of the "Safety rules, instructions and precautionary measures" in the
front of this manual.
3.2. PROGRAMMING SETUP-LEVEL
3.2.1. GENERAL
Configuration of the flow computer is done at SETUP-level. SETUP-level is reached by pressing the
PROG/ENTER key for 7 seconds; at which time, both arrows  will be displayed. In order to return to
the operator level, PROG will have to be pressed for three seconds. Alternatively, if no keys are
pressed for 2 minutes, the unit will exit SETUP automatically.
SETUP can be reached at all times while the flow computer remains fully operational.
Note: A password may be required to enter SETUP. Without this password access to SETUP is
denied.
To enter SETUP-level: