Wigersma & Sikkema UNIGAS 300, Инструкция по установке, эксплуатации и обслуживанию

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Installation, operating and maintenance manual UNIGAS 300
DDG6004MHGB/08-2017/Rev.A2 Software version from M 1.3.40 and D 2.3.37 3
1 Introduction
UNIGAS 300 consists of a processor unit and a temperature sensor, whereas the PT and PTZ versions also
contain a pressure sensor. It is used in combination with a gas meter for conversion of the measured gas
volume.
The gas volume is converted to reference conditions
t
b
and
p
b
according to the formula below:
Z
Z
t
t
p
p
V V
b b
b
C b
•
+
+
• • =
15 , 273
15 , 273
Where p is expressed in bar absolute and t in °C, and where Z is calculated on the basis of the algorithm
stored in the instrument.
The electronic system is divided over two PCB’s placed in an aluminium housing.
The bottom of the housing contains a PCB responsible for measurement, conversion and power supply. The
cover contains a PCB responsible for control and read-out through the display or serial communication.
UNIGAS 300 has three optical serial ports.
Other available functions are:
•
three programmable LF impulse inputs for gas meters with LF impulse outputs
•
Namur input for gas meters with HF impulse output or encoder output
•
two alarm inputs for normally close contacts
•
two programmable real-time impulse outputs
•
two alarm outputs
•
programming using software UNITOOL and infrared (IR) communication head or remote through a
modem connection
•
serial communication with two permanent infrared connectors, one for connecting a modem and the
other for communication with a process computer
•
advanced programmable logger functions
•
module space for future applications
•
real-time clock
UNIGAS 300 comes in three versions:
•
external temperature sensor
•
external temperature sensor and internal pressure sensor
•
external temperature sensor and external pressure sensor
With regard to conversion, UNIGAS 300 is available in two versions:
•
PTZ (conversion on the basis of pressure, temperature and compressibility)
•
TZ (conversion on the basis of temperature and compressibility)
UNIGAS 300 can issue several alarm and warning signals. The level on which an alarm or warning is issued
can be set. The alarms and warnings can be set for the pressure measured, the temperature measured and
all flow registers.
UNIGAS 300 is provided with an ingenious circuit to ensure that battery life is not affected when the impulse
outputs are used.