65
8
Control
Mode
8.2.2
Calculation example
An (approximate) formula for calculating the leakage test monitoring facility is summarised be-
low:
That is, for a maximum gas flow rate of 50 m3/h the formula is:
Insert the numerical value in mbar for
Δ
P.
The formula for a gas rate of flow Q of >50 m3/h is:
The numerical value is to be inserted in m
3
/h or Q and in mbar for.
A. Assuming:
∆
p = 20 mbar, gas flow rate < 50 m
3
/h
B. Assuming:
∆
p = 20 mbar, gas flow rate < 200 m
3
/h;
Definitions:
GDW:
gas pressure monitor
V1:
gas-side safety shut-off device
V2:
burner-side safety shut-off device
P
B
barometric air pressure <1000 mbar
P
SU
lower GDW switching point (falling)
P
SO
upper GDW switching point (rising)
DP = P
SO
- P
B
GDW switching difference
PG
gas flow pressure (supply pressure before V1)
V
P
volume of gas line tested
V
L
leakage quantity
V
Lmax
maximum admissible leakage quantity (limit value)
t
P
testing time (30 seconds, fixed)
i.e. the gas line you want to test should not
exceed 20,8 dm
3
, for being able to detect
the required leakage quantity.
i.e. the gas line you want to test should not
exceed 83,3 dm, for binge able to detect
the required leakage quantity of 200 dm
3
/h.
Содержание ETAMATIC
Страница 1: ...Manual ETAMATIC ETAMATIC S CE 0085 AU 0207 Sensors and Systems for Combustion Engineering...
Страница 2: ......
Страница 7: ...6 Table of Contents 9 27 Dimensions and weight 128 9 28 Declaration of Conformity 131...
Страница 65: ...64 8 Control Mode 8 2 1 Leakage test flow chart Fig 8 4 Flow chart leakage test...
Страница 69: ...68 8 Control Mode Switching in standby via LSB module Fig 8 7 Switching in Standby mode via LSB module...
Страница 90: ...89 9 Appendix 9 8 Process Sequence Charts Fig 9 3 Process sequence chart gas with pilot burner...
Страница 91: ...90 9 Appendix Fig 9 4 Process sequence chart oil with pilot burner...
Страница 92: ...91 9 Appendix Fig 9 5 Process sequence chart gas without pilot burner...
Страница 93: ...92 9 Appendix Fig 9 6 Process sequence chart oil without pilot burner...
Страница 98: ...97 9 Appendix 9 9 Connection Diagrams Fig 9 7 ETAMATIC wiring diagram with ignition flame monitoring...
Страница 99: ...98 9 Appendix Fig 9 8 ETAMATIC S wiring diagram with ignition flame monitoring...
Страница 104: ...103 9 Appendix Fig 9 16 LSB connection ETAMATIC LT1 other LAMTEC devices...
Страница 134: ...133 9 Appendix...
Страница 135: ......