Parr Instrument 4848B - Manual (Page 6)

4848B Reactor Controller
P a r r I n s t r u m e n t C o m p a n y 4
General Specifi cations
Electrical Ratings
115VAC, 15.0 Amps, 50/60 Hz
230VAC, 15.0 Amps, 50/60 Hz
Before connecting a controller to an electrical outlet,
the user must be certain that the electrical outlet has
an earth ground connection and that the line, load
and other characteristics of the installation do not
exceed the following limits:
Voltage: Fluctuations in the line voltage should not
exceed 10% of the rated nominal voltage shown on
the data plate.
Frequency: Controllers can be operated from either
a 50 or 60 Hertz power supply without affecting their
operation or calibration.
Current: The total current drawn should not exceed
the rating shown on the data plate on the controller
by more than 10 percent.
Thermocouple: Unless otherwise specifi ed, all
4848B Controllers operate with a Type-J (Iron-Con-
stantan) thermocouple. The total resistance of the
thermocouple and the lead wires should not exceed
100 ohms. If the resistance of the thermocouple
circuit is higher, it will not function properly.
Environmental Conditions
This instrument is intended to be used indoors.
Operating: 15 ºC to 35 ºC; maximum relative humid-
ity of 80% non-condensing. Installation Category II
(over voltage) in accordance with IEC 664.
Pollution degree 2 in accordance with IEC 664.
Altitude Limit: 2,000 meters.
Storage: -25 ºC and 65 ºC; 10% to 85% relative hu-
midity.
Provisions for Lifting and Carrying
Before moving the instrument, disconnect all con-
nections from the rear of the apparatus. Lift the
instrument by grabbing underneath each corner.
Caution!
Do not use in hazardous atmospheres.
4848B Reactor Controller Specifi cations
Input Thermocouple
type Type-J
Operating Range 0-800 °C
Readout and Setpoint
Resolution 1 °C
System Accuracy +/-2 °C
Control action three-term PID plus limit
control
Control output 1 115VAC or 230VAC
Control output 2 .2 amp max
115VAC or 230VAC
Operating voltages 115VAC or 230 VAC
Heater Loop
Proportional Band: 12 C
Integral time: 375 sec
Derivative: 93 C/sec
Cycle time: 20 sec
Cooling Loop
Proportional Band: 5 C
Cycle time: 5 sec