Vemm Tec PTZ-BOX 3.0 User manual

IOM_Manual_EN_PTZ-BOX 3-0_097-102-003_2017 02.docx
GAS-VOLUME CONVERSION DEVICE
PTZ-BOX 3.0
Manual
Specifications
Technical Description
Mounting instructions
Configuration
Single-channel gas conversion device
Approved for installation in potentially explosive atmospheres.
February 2017

IOM_Manual_EN_PTZ-BOX 3-0_097-102-003_2017 02.docx
Safety Measures
This measurement device can be operated only by an operator trained in
compliance with the technical terms, safety regulations, and standards. It is
necessary to consider any other legal and safety regulations stipulated for special
applications. Similar measures also apply for special applications. Similar measures
also apply for using the accessories. The operator training must be in compliance
with Decree no. 50.1978 Coll.
The information in this manual does not have the power of a legal obligation from the
manufacturer’s side. The manufacturer reserves the right to implement changes. Any
changes in the manual or in the product itself can be performed at any time without any
previous alert, with the goal of improving the device or fixing any typographical or technical
mistakes.

IOM_Manual_EN_PTZ-BOX 3-0_097-102-003_2017 02.docx
TABLE OF CONTENTS
1Introduction ............................................................................................. 3
1.1 Basic device description....................................................................................... 3
1.2 Function principle................................................................................................ 4
1.3 Device dimensions............................................................................................... 8
2Device technical description ..................................................................... 8
2.1 Device architecture.............................................................................................. 8
2.2 Power supply....................................................................................................... 9
2.3 Security seals......................................................................................................12
2.4 Product label ......................................................................................................13
3Safety instructions...................................................................................14
3.1 General ..............................................................................................................14
3.2 Use in potentially explosive atmosphere.............................................................14
3.3 Risks of use.........................................................................................................14
3.4 Special conditions of use.....................................................................................15
3.5 Using different groups of gas ..............................................................................15
4Metrological characteristics ....................................................................16
4.1 Temperature measurement ................................................................................16
4.2 Pressure measurement.......................................................................................16
4.3 Compressibility calculation .................................................................................17
4.4 Volume measurement and calculation ................................................................18
5Inputs and outputs ..................................................................................20
5.1 Inputs.................................................................................................................20
5.2 Outputs ..............................................................................................................22
6Communication with the PTZ-BOX 3.0.....................................................24
6.1 RS-232 and RS-485 interfaces..............................................................................24
6.2 Optical interface IEC-1107...................................................................................26
7Functions.................................................................................................27
7.1 Parameter indication ..........................................................................................27
7.2 Actual values ......................................................................................................27
7.3 Archives .............................................................................................................28
7.4 Device configuration...........................................................................................31
7.5 Other device functions........................................................................................31
7.6 Securing the device against a change of metrological values ...............................32

IOM_Manual_EN_PTZ-BOX 3-0_097-102-003_2017 02.docx
7.7 Access passwords ...............................................................................................33
8Starting the device ..................................................................................37
9Operation................................................................................................38
9.1 Keypad ...............................................................................................................38
9.2 Menu system......................................................................................................39
9.3 Initial display ......................................................................................................39
9.4 Menu structure ..................................................................................................40
9.5 Quick Access Buttons..........................................................................................49
9.6 Change settings via the keypad ...........................................................................49
10 Mounting instructions .............................................................................51
10.1 Mechanical mounting of the device ....................................................................51
10.2 Cable connection, grounding...............................................................................54
11 Accessories (options)...............................................................................56
11.1 Assembly accessories..........................................................................................56
11.2 Intrinsically safe power supply............................................................................56
11.3 Barrier and communication modules ..................................................................56
11.4 GPRS communicators..........................................................................................56
11.5 Other accessories ...............................................................................................56
12 Specifications ..........................................................................................57
13 Intrinsically safe parameters ...................................................................62
14 Configuration ..........................................................................................64
14.1 Checking after installation ..................................................................................64
14.2 Connecting the PTZ-BOX 3.0 with a PC ................................................................64
14.3 Configuration with the GASCcomm software ......................................................65
14.4 Password in the device .......................................................................................76
15 Configuration examples...........................................................................78
15.1 Parameters display modes..................................................................................78
15.2 Setting the gas meter impulse factor...................................................................78
15.3 Pulse outputs setting ..........................................................................................81
15.4 Analogue output setting .....................................................................................86
15.5 Limits of measured values ..................................................................................89
15.6 Monitoring the external power supply................................................................91
15.7 Setting of communication with MODBUS protocol ..............................................93
15.8 Configuration of Quick Access buttons................................................................96

IOM_Manual_EN_PTZ-BOX 3-0_097-102-003_2017 02.docx
16 Exchange of pressure and temperature sensors ....................................100
16.1 Pressure and temperature sensor replacement procedure in the PTZ-BOX 3.0...100
16.2 Software settings for a new temperature sensor...............................................101
16.3 Software settings for a new pressure sensor .....................................................103
17 Additional external digital temperature or pressure sensor...................104
17.1Fitting an additional digital pressure or temperature sensor .............................104
17.2 Configuring the digital sensor in the parameter file ...........................................106
17.3 Final verification after replacement of a sensor or adding a digital sensor .........107
18 What if something does not work .........................................................109
19 Literature ..............................................................................................111
20 Documentation .....................................................................................111
21 Software................................................................................................112
22 Used trade marks ..................................................................................112
23 List of figures.........................................................................................113
24 List of Tables .........................................................................................114

PTZ-BOX 3.0
1
Used symbols and definitions
Symbol
Description
Unit
AGA8-G1
Compressibility calculation method
AGA8-G2
Compressibility calculation method
AGA8-92DC
Compressibility calculation method
AGA NX-19 mod
Compressibility calculation method
ASC
Accredited Service Centre
BTS
Base Transceiver Station
CL-1 Module
Analogue output module (4-20mA)
CRC
Checksum –used for data protection
CTR
Communication protocol
Kx MODULE
Some of the products of series Kx module (K1
MODULE, K2 MODULE, K3 MODULE, K3/A MODULE,
K4 MODULE, K4/A MODULE)
DLMS
Communication protocol
DC
Direct Current voltage
dE
Increment of energy
MJ
dV
Increment of primary volume Vmor Vc
m3
dVb
Increment of base volume
m3
dVc
Increment of corrected primary volume
m3
dVm
Increment of primary volume
m3
E
Energy
MJ
Es
Estimated value of energy
MJ
PA1.1
Digital pressure sensor PA1.1 (RS485/Modbus
connection)
TA1.1
Digital temperature sensor TA1.1 (RS485/Modbus
connection)
EMC
Electromagnetic compatibility and resistance
EMI
Electromagnetic radiation
firmware, FW
Software equipment loaded in the device
GOST NX-19
Compressibility calculation method ( related with
AGA NX-19 mod) according to VNIMS directive (valid at
temperature range -23°C to +60°C)
Hs
Combustion heat (Superior heating value)
MJ/m3
IS
intrinsic safety, intrinsically safe
JBZ-0x
Some of the JBZ-01, JBZ-02, JBZ-02/A products
Modbus
Communication protocol designed by Modicon [15]
M900
Specific communication protocol
SGERG-88
Calculation method of gas compressibility factor, more
details in [17]
SNAM
Communication protocol
SW
Software for PC
C
Conversion factor
-
K
Ratio of compressibility factors (Z/Zb)
-
kp
Gas meter constant (number of impulses per 1 m3)
imp/m3

PTZ-BOX 3.0
2
Symbol
Description
Unit
N
Number of input impulses from gas meter
imp
p
Absolute pressure at measurement conditions
kPa
pb
Absolute pressure at base conditions
kPa
Qm
Flowrate at measurement conditions (further primary
flowrate)
m3/h
Qb
Flowrate at base conditions
m3/h
T
Absolute temperature at measurement conditions (T = t +
273.15)
K
t
Gas temperature
°C
Tb
Absolute temperature at base conditions
K
V
Volume Vmor Vc
Vm
Volume at measurement conditions (further primary
volume)
m3
Vc
Corrected volume at measurement conditions (volume
corrected based on correction curve of gas meter)
m3
Vb
Volume at base conditions (hereinafter also the
standardized volume)
m3
Vbs
Error volume at base conditions (hereinafter also the
error standardized volume)
m3
Vs
Error volume at measurement conditions (hereinafter
also the error operational volume)
m3
Vd
Difference of primary volume
m3
Vbd
Difference of base volume
m3
Vf
Tariff counter of primary volume
Vbf
Tariff counter of base volume
Z
Compressibility factor at measurement conditions
Zb
Compressibility factor at base conditions

PTZ-BOX 3.0
3
1 Introduction
1.1 Basic device description
The Electronic gas volume converter PTZ-BOX 3.0 (hereinafter called: “the
device”) is a measuring instrument designed for the conversion of the gas volume
measure at measurement conditions to volume at base conditions.
The information on the gas volume passing through is measured using the
impulse outputs of the gas meter. The gas temperature and pressure are measured
by integrated converters. The device calculates the ratio of compressibility factors of
gas using standard methods or a constant value is used.
The device has been constructed and approved according to the EN 12405-1
standard as a conversion device type 1 (compact system) and can be supplied as a
T, PT, or PTZ conversion device.
From safety point of view the device is constructed according to EN 60079-11
as intrinsic safe.
It is manufactured and supplied in compliance with the following European
Parliament directives:
2014/34/EU Equipment and protective systems for use in potentially explosive
atmospheres
2014/30/EU Electromagnetic compatibility
2014/32/EU Directive on measuring instruments
Device is put on the market and into usage according to above mentioned
standards and is marked with CE mark.
The device is built in a casing with sturdy plastic with IP65 protection. It is
equipped with a graphic display and a 10-button keypad. Furthermore, it has impulse
inputs for the connection of a gas meter with LF or HF impulse output and binary
inputs. The device is also suitable for connection to encoder outputs of a gas meter.
The binary inputs can work as check inputs to check the connection with a gas meter
or can have a different function, e.g. monitoring the conditions of safety snap locks,
doors, etc. The device has 4 available outputs. These can be configured as impulse
or binary outputs, or as data outputs for the CL-1 module. When using this module,
an analogue current output can be realized.
The device is powered by a lithium battery. The life cycle of the battery is 6
years in the standard work mode. An external power supply source can be used in
applications with higher demands.
The device has a data archive of the measured values with an adjustable
structure and storing period. The binary archive stores changes on the binary inputs
and the occurrence of the monitored events (limits, etc.) Error conditions are stored
in a status archive. It is possible to program the storing of important parameters and
calculations and storage of some statistical values in the daily and monthly archive.
The archive has settings for service and metrology; in case of changing the settings,
these settings, as well as the counter values, date and time are recorded. Other
available logs are mentioned in 7.3.

PTZ-BOX 3.0
4
For communication with a superior system, the device has a serial interface
(RS-232 and RS-485). Various communication protocols installed in the device allow
easier connection to SCADA systems. The device cooperates with common phone,
radio, GSM, and GPRS modems, and in case of an alarm condition, it can initiate the
connection.
The device can be extended by one non-metrology sensor for measuring
pressure or temperature. This extension can be performed without breaking the
official mark on an already installed device.
Basic configuration of the PTZ-BOX 3.0 offers:
-analogue input (pressure P - metrological channel)
-analogue input (temperature T - metrological channel)
-4x digital input DI1 to DI4 (binary, pulse); input DI1 can be used for connecting a
NAMUR encoder
-4x digital output DO1 to DO4 (binary, pulse, analogue)
-communication channel RS485/RS232 for communication with superior system
-input of external power supply
-option: connection of one digital pressure sensor PA1.1 or one digital
temperature sensor TA1.1 (non-metrological) to the internal bus via the EDT
expansion board. This extension can be accomplished by the end user on an
already installed device without breaching metrological seals.
The device can be configured using the supplied SW [22] for PCs. This SW also
allows the readout, display and archive of both the immediate measured values as
well as the contents of the internal device archives.
1.2 Function principle
1.2.1 Conversion using the equations of state
The device obtains data on the gas volume via impulses (N) from an LF or HF
sensor located in the gas meter. The volume at the measuring conditions (V) is
calculated from the number of impulses (N) and gas meter constant (kp).
The device obtains other data on the gas from the temperature and pressure
sensors. This data is used to calculate the conversion factor (C) which is influenced
also by: Absolute temperature at base conditions (Tb), absolute pressure at base
conditions (pb) and compressible factor of the gas at base conditions (Zb).
Volume at measuring conditions (operational volume):
V =
N
kp
Ratio of compressibility factor:
K =
Z
Zb
Conversion factor:
C =
p
*
Tb
*
1
pb
(t + 273.15)
K

PTZ-BOX 3.0
5
Volume at base conditions (standardized volume):
Vb= V * C
The gas compressibility factor expresses the deviation of properties of natural
gas from the properties of an ideal gas. By setting the parameters, it is possible to
choose a specific method for calculation of the compressibility factor according to the
standard (AGA NX-19 mod, AGA8-G1, AGA8-G2, SGERG-88 or AGA8-92DC). A
constant compressibility value can be used for other gases besides natural gas. If the
pressure or temperature value gets out of the limits of the validity of the chosen
standard, the device calculates using a default compressibility value.
The device calculates the gas flow from the impulse frequency on the input in
real time using mathematical filtration from the input signal.
Operational flow:
Q = ∆V / ∆t [m3/h]
Where: ∆V ............................ increment of operational volume
∆t ............................. time between the impulses with an accuracy
of one hundredth of a second
The value of the flow displayed on the converter display is updated every 10
seconds.
Standardized flow: Qb= C * ∆V / ∆t [m3/h]
1.2.2 Error values of volumes at measuring conditions and volumes
at base conditions
For calculation during error conditions (i.e. in case of a sensor error, deviation of
the parameter value from the working range, or device error), the device has
counters of the error volume at measuring conditions (Vs) and error volume at base
conditions (Vbs). These counters are interconnected with the pertinent counters of
volume at normal conditions.
A detailed description of device behaviour during normal and error conditions is
in paragraph 4.4.
1.2.3 Volume correction at measurement conditions
Device enables to compensate gas meter error according to predefined
correction curve from gas meter test certificate. This function and parameters Vccan
be activated only by the manufacturer or by an accredited service center to ensure
that the used gas meter correction curve as a function of the flowrate Qm is valid
within the working conditions.
The error of measurement is corrected by using the function f(Qm). The
corrected volume is:
Vc = Vmx f(Qm)