Specifications

HC - Cycle Time is the rate at which power is supplied to

power control switch. Push up or down button to set.

Sbr - the percent of power that is supplied to the con-

trol output terminals if an open thermocouple condi-

tion exists. Push up or down button to check. 0.0 will be

displayed. This parameter cannot be changed; if 0.0 is

not displayed, contact Barnstead/Thermolyne. The upper

display will flash “OR” if an open thermocouple condition

exists.

Tuning Your Controller

The programmable control has automatic tuning features

which install optimum tuning parameters to give the best

temperature accuracy. No manual loading of tuning pa-

rameters is needed. We highly recommend using these

features to provide the best temperature accuracy the

controller can attain. Perform the following procedures

when you first set up your furnace and each time you

change your load type, operating temperature, or pro-

gram.

The following procedure is instruction on how to initiate

the SAT Self and Adaptive Tuning feature. This feature

starts the controller in the Self Tune mode then automati-

cally switches over to the Adaptive Tuning Feature. Self

Tuning is a one-time function which permits the user to

retune the instrument control parameters to suit new pro-

cess conditions. Adaptive tuning takes over when the self

tune is completed and continuously reevaluates the tuned

parameters. Adaptive tuning will then automatically install

new values if a better response could have been attained.

To initiate the tuning feature:

Load your furnace with a load characteristic of those you

intend to heat in it.

Depress scroll button until SAT is displayed. Depress the

up and down buttons simultaneously to start self tuning.

The A-T indicator is then illuminated (upper right hand

comer) and the lower display indicates the set point at

which the self-tune sequence will occur. The “SP” indica-

tor will flash for 1 minute, during which time the set point

may be changed, if it is required to retune at a new set

MULTI-PROGRAMMABLE MODELS