Table of Contents
Application
PZL
PZH
DG
DG
DG
DG
min
max
49
50
15
14
13
46
45
ϑ
1
2
µC
P
3
>750°
FCU 500..F0
58
STM
47 48
DL
DL
min
M
PZL
DG
BCU 580 · Edition 11.15l
VAS
BCU 580..F3
PZ
VAS
DG
VAS
VAS
p
/2
u
BCU 580..F3
Purge
VAS
PDZ
DG
M
VAS
VAG
VR..L
VAS
VAG
VR..L
TE
1 .1 . 7 ON/OFF rotary impulse control
For processes which require a turn-
down of more than 10:1 and/or
those which require heavy circula-
tion of the furnace atmosphere to
ensure a uniform temperature, e.g.
heat treatment furnaces operating
at low and medium temperatures in
the metallurgical industry.
With ON/OFF cyclic control, the
capacity supplied to the process is
controlled by means of a variable
ratio of the operating time to the
pause time. In this type of control,
the burner output pulse frequency
always maintains full momentum
and results in maximum convection
in the furnace chamber, even with
regulated heating.
The pneumatic ratio control sys-
tem controls the gas pressure on
the burner proportionally to the air
pressure and thus maintains a con-
stant air/gas ratio. At the same time,
it acts as a low air pressure protec-
tion device.
▼
15
Hide quick links:
Table of Contents
