miniELCOR
22
but it does not ensure the counting of the impulses. The terminals for the HF NAMUR
inputs are marked HF+ and HF- (see Fig. 12).
Changing measuring units, setting the gas meter constant
The impulse inputs measuring units and the gas meter constant can be
adjusted using the service SW. The gas meter constant and S/N of gasmeter can be
also set from the device keyboard.
Number of places of counters of the hf impulse inputs
In the case of hf impulse inputs, the counter works with 9 digit places.
5.1.3 Connection with gasmeter via encoder (*)
Gasmeter can be connected with corrector via encoder. Digital value of
gasmeter counter is transferred into EVC. Two types of encoders are supported like
NAMUR and SCR.
The usage of encoders is approved for metrological reasons by EC- type
certificate TCM 143/06-4664, Adition 1.
Encoder NAMUR
No special HW is required for NAMUR encoder usage. The only condition for
NAMUR encoder data processing is usage of IS external power supply JBZ-02 ( or
JBZ-01).
Encoder SCR
To process data from SCR encoder miniELCOR SCR type must be used
complemented with KP 065 09 board. This board must be complemented directly
only by manufacturer. Additional assembly at customer side is not allowed. Encoder
board is connected with input board via IS RS485 Bus ( there is used connector
dedicated for digital transducer connection ( see Pict.3 and Pict.4). This type of
encoder can be also used for only battery powered EVC but it is too much energy
consuming. Enduser should take care about it during parameterisation.
5.1.3.1 Encoder NAMUR input
Connection between EVC and encoder is made with shielded two wires cable.
NAMUR encoder may be connected only via digital input DI1. Terminals for encoder
are the same like for HF pulse input marked HF+ and HF- ( correct signal polarity is
important.). NAMUR encoder connection must be setup in EVC parameters with SW
Telves 22.
5.1.3.2 Encoder SCR input
Connection between EVC and encoder is made with shielded two wires cable
via terminals marked A and B board SCR (KP065 09). No matters on conductor
polarity. Encoder data are transferred into EVC at default measurement period. The
shorter measurement period has bad impact on battery life.
Содержание miniELCOR
Страница 13: ...miniELCOR 6 Fig 1 Volume and energy calculations Scheme...
Страница 19: ...miniELCOR 12 Fig 5 Security marks device without SCR encoder Fig 6 Security marks of miniELCOR SCR...
Страница 50: ...miniELCOR 43...
Страница 55: ...miniELCOR 48 Fig 22 Basic navigation from the initial screen FW 2 xx...
Страница 65: ...miniELCOR 58 Fig 26 Mounting of miniElcor to the mounting plate Fig 27 Mounting on the pipeline...
Страница 69: ...miniELCOR 62 Fig 30 Shielding connection in bushing 12 35...
Страница 84: ...miniELCOR 77 Fig 33 Base device parameters Fig 34 Data archive...
Страница 100: ...miniELCOR 93 Fig 50 Wizard for mathematical expression Fig 51 Equation for primary volume pulses and output connection...
Страница 111: ...miniELCOR 104 Fig 64 Switch of communication protocol in the device...
Страница 114: ...miniELCOR 107 Fig 66 Fig 67...
Страница 119: ...miniELCOR 112 Fig 70 Fig 71...
Страница 120: ...miniELCOR 113 Fig 72 Fig 73...
Страница 121: ...miniELCOR 114 Fig 74 Fig 75...
Страница 122: ...miniELCOR 115 Fig 76...
Страница 125: ...miniELCOR 118...