Installation, operating and maintenance manual
UNIGAS 300
DDG6004MHGB/08-2017/Rev.A2 Software version from M 1.3.40 and D 2.3.37
46
Signal inputs
Number of inputs
6
Connection
Screw terminals
NAMUR input
HF or encoder input (for conversion), when set to Encoder ,
configurable to counter 1 or 2
Impulse input 1
LF input (for conversion), configurable to counter 1 or 2
Impulse input 2
LF input for counter 2
Impulse input 3
LF input for counter 3
Alarm input 1
Input for normally closed contact
Alarm input 2
Input for normally closed contact
Specification of LF inputs
3.6 V, 6 µA, reed or transistor
Maximum frequency
2 Hz
Minimum impulse duration
75 ms
Scaling factor
Counter 1 LF : 0.1 – 100000.0 imp/m
3
configurable
Counter 1 HF : 0.01 – 100000.00 imp/m
3
configurable
Counters 2 and 3: 0.1 – 100.0 imp/m
3
configurable
Specification of HF
NAMUR, 5 kHz DC 50%, mains power necessary
(1000 h emergency power supply from D cell in case of power
failure)
Maximum frequency
5 kHz
Minimum impulse duration
100 µs
Error curve correction
Linear interpolation on the basis of a maximum of ten coordinates
of the measuring error curve of the gas meter
Specifications of encoder
NAMUR, suitable for encoder counters of Itron, GWF, Elster,
Dresser, FMG
or Aerzener
Counter
formats
Multiplier
10
+3
10
+2
10
+1
10
+0
10
-1
10
-2
10
-3
9
-
-
-
-
X
X
X
8
-
-
-
X
X
X
X
7
-
-
X
X
X
X
-
6
-
X
X
X
X
-
-
Specifications of alarm inputs
3.6 V, 6 µA, reed or transistor
Pressure sensor
Type
PRAR series
Measuring principle
Silicon piezo-resistive
Dimensions
ø 28 x 82 mm
Connection
G¼, flat seal
Classification pressure ranges
- 0.8 – 2.5 bar (abs.)
- 1.5 – 6 bar (abs.)
- 2.5 – 10 bar (abs.)
- 5 – 20 bar (abs.)
- 10 – 40 bar (abs.)
- 20 – 80 bar (abs.)
Standard
EN 12405-1+A2
Maximum overload
1,5 x maximum pressure without loss of accuracy
Adjusting
Offset adjustable on display and keys after breaking seal and
operating programming switch
Version
- internal
- external, with PUR cable. Available cable lengths: 1.5, 3, 5 and
10 m
Summary of Contents for UNIGAS 300
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