Eclipse-combustion EGA4 User Manual Page 13
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Instruction Manual MM850481 ed.01
N
OTE
: T
O OBTAIN AN ACCURATE MEASURE IT IS RECOMMENDED TO WAIT
3/5
MINUTES
.
Toxic gas sensor can be present a ±2% drift and a long resuming time it an excessive (>150% of F.S.) gas concentration
is applied. In that case it is recommended to wait for a measured value lower than 20ppm, by sucking fresh air before
switch the analyzer off.
An optional Electro-valve can be installed inside the instrument to exclude/include manually or automatically the CO cell
when the CO concentration is too high (e.g. when the burner is starting)
Four acoustic and visual alarm levels can be set on four programmable parameters.
4.2 Auxiliary measurements
4.2.1 Temperature measurements
The instrument is equipped with two temperature inputs to measure exhaust gas and the burner air input temperatures
(combustion gas).
♦ A thermocouple type K (nickel-nickel chromium) is included in the tip of the gas sampling probe to measure the flue
gas/exhaust gas temperature. This thermocouple is suitable for permanent measurements at temperatures up to
800°C and for short-term measurements up to 1000°C. Temperature measurement and gas sampling from the flue
gas pathway are thus always performed at the same site. The probe is connected to the apparatus with
compensated cable and connector. An internal Pt100 resistance thermometer is used for cold junction
compensation.
♦ The same Tc K input can be used to measure the flow and return temperature
in water circuit. If you have to
measure the water temperature measuring the pipe temperature, use an arch-model thermocouple with an
appropriate diameter.
♦ A remote Pt100 sensor, can be supplied on request with a 2 or 5 meter cable to measure the air inlet temperature in
forced air boiler. This option is very important for an accurate efficiency calculation.
4.2.2 Pressure and Draft
The analyzer can be equipped with a temperature compensated pressure sensor to measure the chimney draft or
pressure. The pressure range is from –1500.0 to + 1500.0 mmwc (±150.00 hPa)
The sensor is factory calibrated and does not require manual adjustment.
The zero drift, caused by ambient air temperature variation, is automatically cancelled at each instrument start-up. In
addition, for more accurate readings the operator can reset, using the pertinent key, the zero if required. The instrument
sensor is differential type and, if connected to a Pitot tube, it can be used to measure gas speed.
N
OTE
: W
E SUGGEST TO EXECUTE THE AUTOZERO PROCEDURE FOR MORE ACCURACY BEFORE PERFORM THE MEASUREMENT
.
CAUTION
I
F A SINGLE TUBE GAS SAMPLING PROBE IS USED FOR
P
RESSURE
/
DRAFT MEASUREMENTS
,
BE SURE THAT IT IS CLEAN AND DRY
BEFORE CONNECTION TO THE PRESSURE INPUT
.
CAUTION
A +300
H
P
A
(
OR
–300
H
P
A
)
OVER
-
PRESSURE CAN PERMANENTLY DAMAGE THE PRESSURE SENSOR
.
4.2.3 Smoke index measurement
This method consists of taking a gas sample from the center of the gas pipe behind the heat exchanger and crossing it
through a special filter paper.
13
- EGA4 Combustion 1
- Analyzer 1
- INTRODUCTORY NOTE 2
- Features & Benefits 5
- 1.1 Specifications 6
- 1.2 Accuracies and ranges 7
- 2 GENERAL 8
- 3 PHYSICAL DESCRIPTION 10
- 4 PRINCIPLE OF OPERATION 11
- Line filter 12
- Rubber plug 12
- 4.2 Auxiliary measurements 13
- 4.2.2 Pressure and Draft 13
- 4.2.4 Other measurements 14
- 5 RECOMMENDATIONS 15
- 6 CONNECTIONS 16
- Tair probe 17
- 7 OPERATIONS 18
- O2 20.9% 19
- CO 2000ppm 19
- Ta 20.0°C 19
- 7.1.4 Text input 20
- 7.1.5 Select by a list 20
- EcoLine 4000 21
- GreenLine 4000 21
- UniGas 3000+ 21
- 7.4 Smoke measurement 23
- (option) 24
- 7.7 Gas speed measurement 25
- 7.8 Analysis data print 26
- SELECT TEST 28
- 7.10 Ambient CO probe 29
- 7.10.1 CO probe operations 29
- Tamb : 25.7 °C 31
- Rel. Hum.: 50.2 % 31
- 8 MEMORY MANAGEMENT 32
- 8.4 DBGas 2000 33
- 8.4.1 Plants/Clients menu 33
- 8.4.2 Analysis menu 35
- 8.4.3 Fuels menu 36
- 8.5 Configuration Software 38
- 9 CONFIGURATION 40
- 9.3 HELP key 41
- 9.3.1 Header setting 41
- 9.3.2 Sensor Diagnostic 41
- 9.3.3 Service Data 42
- 10 MAINTENANCE 43
- 10.2.1 Clock 44
- 10.2.2 Serial Port 44
- 10.2.3 Analysis 45
- 10.2.4 Leak test time 45
- 10.3 Firmware Upgrade 46
- 10.4 Smoke pump maintenance 46
- 11 CERTIFICATES 47
- APPENDIX 48
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