Requires the following thermistor
sensors. (NOT available
from Surplus Sales).
RANGE
RESISTANCE ±20%
• -90ºF
to +50ºF
100
ohms @ 25ºC
• +20ºF
to +250ºF
2,000
ohms @ 25ºC
• +90ºF
to +320ºF
10,000
ohms @ 25ºC
• +175ºF
to +480ºF
50,000
ohms @ 25ºC
• +428ºF
to +617ºF
10
megohm @ 25ºC
• +572ºF
to +842ºF
510,000
ohms @ 125ºC
The
RFL Model 70A is a "stepless", full wave phase
firing temperature controller
capable of controlling as accurately as ± 0.05ºC
in many applications. Resistive loads from 1 to 15 amps,
115 or 230 vac 50/60Hz can be controlled. Set point adjustment
is achieved via internal screwdriver accessible Coarse and
Fine controls or with a
remote 10,000 ohm potentiometer (RFL #42060 or equiv). A
Gain adjustment is provided enabling the bandwidth (sensitivity)
of the controller
to match the thermal dynamics of the complete system.
