302
F
FURNACES
Tube, 1200°C, 3 Zone, Large Diameter
GHC Series, Wire Embedded Three Zone Tube
Furnaces, 1200°C
Features:
●
1200°C maximum operating temperature
●
Excellent uniformity results from the heated length
divided into 3 zones each with its own controller &
thermocouple
●
Power to the end zones is automatically adjusted to
compensate for heat loss, even without end plugs fitted
●
Provides a longer uniform zone than that which can be
achieved in a single zone tube furnace
●
Heated tube lengths of 450, 600, 750, 900, 1050, or 1380m
●
Accepts accessory worktubes with outer diameter up to
170mm
●
All three zones are controlled to the same set-point
●
Horizontal configuration with furnace mounted onto
control module
●
PID controller with single ramp to setpoint & process timer.
GHC 12/1200/3216P1
with over temp.
Three zone control provides a considerably longer uniform
temperature zone than is possible with single zone furnaces.
However if a programmed controlled cooling ramp is
required then specify the “Retransmission of Setpoint”
control option at the time of ordering.
Requires but does not include an appropriate accessory
worktube up to 170mm outer diameter.
Options:
●
End zones of either 150mm or 300mm long
●
Insulation plugs & radiation shields to prevent heat
loss & improve uniformity
●
Gas injection & vacuum compatible tube end, seal
assemblies
●
8 & 20 segment programmable controllers
●
RS232 communications & graphical recorders
●
“Retransmission of Setpoint” control configuration
to facilitate programmed cooling
●
Alternative furnace sizes can be supplied upon
request.
Model
GHC-
12/450
GHC-
12/600
GHC-
12/750
GHC-
12/900
GHC-
12/1050
GHC-
12/1200
Max. temp. (°C)
1200
1200
1200
1200
1200
1200
Heat-up time (mins)
98
64
74
79
100
-
Max. o/d accessory tube (mm)
170
170
170
170
170
170
Tube/
Worktube
length(mm)
Heated
For work in air
For modified atmosphere work
450
750
1050
600
900
1200
750
1050
1350
900
1200
1500
1050
1350
1650
1200
1500
1800
External H x W x D (mm)
Furnace body length (mm)
672x676x468
630
672x827x468
780
672x976x468
930
672x1126x468
1080
672x1276x468
1230
672x1426x468
1380
*Average Uniform length ±5
°
C
(mm)
300
440
500
640
880
-
Max. power (W)
Holding power (W)
3100
1500
3900
1800
4600
2200
5400
2800
6200
2800
7000
3100
Thermocouple type
N
N
N
N
N
N
Weight (kg)
6.5
40
40
51
55
-
Power supply
Single phase
or Universal
Universal
Universal
Universal
Universal
Universal
“Universal” models are easily altered between single phase (220V), 3 phase-neutral (e.g. 380/220V) and delta
(e.g. 220V) electrical supplies.
Continuous operating temperature is 100°C below maximum temperature.
Holding power is measured at the continuous operating temperature.
Uniform length measured with end plugs fitted.
