Set An Access Code; Set Low Temp Alarm Limit (Tracking Alarm); Enable Temp Alarms To Trip Relay Contacts - Thermo Scientific 3962 Operating Manual

Environmental chamber
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Set an Access Code

A 3-digit Access Code can be entered to avoid unauthorized personnel from changing the
setpoints, calibration, or configuration. A setting of 000 will bypass the access code. The
factory setting is 000.
1. Press the Mode key until the Config indicator lights.
2. Press the right arrow until ACC CODE XXX is displayed in the message center.
3. Press up or down arrow to change the access code.
4. Press Enter to save the access code.
5. Press the Mode key to return to the Run mode or right/left to go to next/previous
parameter.

Set Low Temp Alarm Limit (Tracking Alarm)

The low temp alarm limit is the deviation from the temperature setpoint, which will cause
a low temp alarm. The low temp alarm is variable from 0.5° below setpoint to 5.0° below
setpoint. The factory setting is 1.0° below setpoint. A minus sign in the display indicates
that the alarm setting is below the setpoint.
1. Press the Mode key until the Config indicator lights.
2. Press the right arrow until TMP LO XX.XC is displayed in the message center.
3. Press up/down arrow to change the low temp alarm limit.
4. Press Enter to save the low temp alarm limit.
5. Press the Mode key to return to Run mode or right/left to go to next/previous
parameter.

Enable Temp Alarms to Trip Relay Contacts

The temperature alarms can be programmed to trip the remote alarm contacts. A setting
of ON will cause this, a setting of OFF will not allow temperature alarms to trip the
contacts. The factory setting is ON.
1. Press the Mode key until the Config indicator lights.
2. Press the right arrow until TMP RLY XXX is displayed.
3. Press the up/down arrow to toggle the setting ON/OFF.
4. Press Enter to save the setting.
5. Press the Mode key to return to Run or the right/left arrow key to go to next/previous
parameter.
Handling and Control |
Chapter 7
Model 3962 | 7-7

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