Instruction manual

I n t r o d u c t i o n

Congratulations on your purchase of an Athena Series

OTC25 Digital Temperature Controller. It is designed for

ease of use and reliability wherever accurate temperature

control is required.

After following the instructions for installation, simply step

through and set each of the unit’s parameters using the

OTC25’s easy menu system.

If you still have questions or require any assistance in setting

up or operating your controller, please contact your Athena

representative or call 1-800-782-6776.

F e a t u r e s

S a f e t y

W a r n i n g

• Type J Input (OTC25 N, OTC25 L)

• Type J or K Input (OTC25 P)

• ±0.3% FS Accuracy

• Large, Easy-to-Read LED Display, Selectable for

Either Setpoint or Process Temperature

• Adjustable Output Hysteresis to Prevent Rapid

Cycling Around Setpoint Temperature (OTC25 N)

• Adjustable Deviation Alarm Flashes Display When Measured

Temperature Exceeds or Falls Below Setpoint Temperature

• NEMA 4X Front Bezel, Splash-Proof and Resistant to Dust

• Discrete Status Indicators Illuminate When Temperature

Display, Setpoint Display or Heat/Cool Output is Active

• Approvals: UR, cUR, CE

In addition to presenting a potential fire hazard, high

voltage and high temperature can damage equipment and

cause severe injury or death. When installing or using this

instrument, follow all instructions carefully and use approved

safety controls. Electrical connections and wiring should be

performed only by suitably trained personnel.

Do not locate this instrument where it is subject to excessive

shock, vibration, dirt, moisture, oil, or other liquids. The safe

operating temperature range for this unit is 32° F to 140° F

(0° C to 60° C).