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GraLab Model 450 Electronic
Enlarging Timer
The Model
450 is a
single
memory-switching
timer. It
offers
simple
operations
and
adjustable,
highly
visible,
2-digit LED
display. It
has easily
adjustable
membrane
controls for
display
brightness,
two
countdown
time
ranges-seconds
to 99 and
tenths of
seconds to
9.9, three
audio signal
choices-off,
metronome
and
end-of-cycle
tone, and AC
outlet power
"on" or
timer
controlled
operation
selection.
Time setting
knobs are
easy to
grasp and
click into
place for
each time
increment.
The
start/reset
bar is
easily
identified
and
activated by
the touch of
a finger. |
|
Industrial
and
time-lapse
photography,
animal
feeding and
stimulus,
water
analysis,
centrifuges,
solenoid
switching,
to name a
few. |
|
Reliable and
accurate
time after
time |
|
Time Range |
seconds to
99
tenths of
seconds to
9.9 |
|
Accuracy |
Better than
±.01% @ 1
second
relative to
power
frequency
(20°C
ambient, no
load)
Repeatability:
+ .005% @ 1
second
relative to
power
frequency
(20°C
ambient, no
load) |
|
Max. Lamp
Load |
@ 120 VAC:
Max Lamp
Load 600W |
|
Max.
Resistive
Load |
1200 W |
|
Max. Motor
Load |
1/3 HP |
|
Number of
Outlets |
1 |
|
Audible
Options |
3: off,
metronome
and
end-of-cycle
tone |
|
Memory |
Single |
|
Display |
2-digit LED |
|
Auto Reset |
Yes |
|
Foot Switch |
Yes |
|
Voltage |
100-130 VAC,
50 or 60 Hz
(U.S. &
Canada) |
|
Dimensions |
3.5 x 4 x 8" |
|
Housing
Material |
Plastic |
|
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