Brookfield Temperature Controller, Model 75 - Manual (Page 5)

Brookfield Engineering Labs., Inc. Page 5 Manual No. M/98-205-A0100
The temperature corresponding to any intermediate output voltage can be obtained from the fol-
lowing:
(0.1 x mV) - 100 =
°
C (Centigrade Temperatures)
(0.18 x mV) - 48 =
°
F (Fahrenheit Temperatures)
For example, the temperature corresponding to a reading of 2.5 V (2500 mV) would be calcu-
lated as follows:
(0.1 x 2500) - 100 = 150
°
C or (0.18 x 2500) - 148 = 302
°
F
The recorder jack is a standard 1/4" phono jack. An analog output cable (Brookfield Part No.
HT-88Y) is provided with the Model 75 Controller. Single channel and dual channel strip chart
recorders are available from Brookfield.
III.3 AC, Power Switch and Power Fuse
The power requirement for the Model 75 Controller is 85-265 VAC, 50/60 Hz. and must be
connected through the power cord. The voltage for which the unit has been configured will be
indicated on the bottom of the Model 75 Controller. The power consumption at 120 VAC is 400
mA plus the Thermo Container load power.
The power fuses must be 3A/ 250V fast blow Littlefuse type 3AG 312.003 or equivalent. These
fuses protect the controller electronics only on the hot and neutral lines.
III.4 Load
The “Thermosel” connector is provided to supply power to the Thermo Container. The connector
is specially keyed so that other loads cannot be readily substituted. The power limit supplied by
this connector is 300 watts.
Note: The current provided to the Thermosel connector is potentially dangerous. Do not insert
or remove the load plug while power is applied to the Model 75 Temperature Controller.