Page 10 · 234B Series TEC TO-Can
LaserMount
User’s
Manual
Configuring the Temperature Controller
The Arroyo Instruments
5305
TECSource
or
5240
TECSource
are the
recommended temperature controllers for this mount. When using an Arroyo
Instruments temperature controller, the easiest method for configuring the
controller to operate with the mount is to change the
Mount
setting in the menu
to
234B
. This will change the sensor settings, current limit, and fan settings to be
appropriate for this mount. If you have an older Arroyo Instruments temperature
controller that does not have this selection, there may be an upgrade available
for your instrument, check with the factory for more information, or simply adjust
the current limit to no more than the maximum current of the
234B
.
If you will be using a non-Arroyo controller, make sure to adjust the limits and
sensor settings appropriately to ensure proper and safe operation of the mount.
Working with Thermistors
The
234B
is equipped with a 10k
Ω
negative temperature coefficient (NTC)
thermistor, specifically, the BetaTHERM 10K3A1. A thermistor works by
translating temperature into resistance, with resistance decreasing as
temperature increases (hence the ‘negative coefficient’).
Below is the response curve of the thermistor:
0
10,000
20,000
30,000
40,000
50,000
-10
0
10
20
30
40
50
60
70
80
90
100
R
esi
stan
ce
(Ω)
Temperature (°C)
Thermistor Resistance vs Temperature
