User guide

2
888.88
FEATURES:
1. Digital LED Display.
2. Illuminated ON/OFF Switch.
3. Circuit protection.
4. +/- 1 °C Accuracy.
5. Detachable Power Cord.
6. Audible Alarm
GENERAL USE:
The Opti-CHEM® CG-3498-01 is designed to monitor process reactor
temperatures and other laboratory equipment and activate an 85 dB alarm
should the temperature rise above a set point input by the user. The set
point value is set to 50°C at the factory.
SET-UP and OPERATION see Figure 1:
1. Plug the detachable power cord into the unit and a 120VAC or 240VAC Power source. The Opti-CHEM® CG-3498-01 is set
up for either 120VAC or 240VAC operation.
2. Insert a thermocouple plug into the corresponding thermocouple receptacle. The color and size of the thermocouple plug and
receptacle must match.
3. Switch the Power Switch on the unit to the “ON” position. The switch will be illuminated.
4. The current temperature will be displayed on the digital readout after a system check.
5. Place the thermocouple probe into the medium to be monitored. NOTE: Probe should not be in contact with bottom or sides
of heating vessel, and should be submerged 2/3rds of medium content.
6. Enter the desired high temperature set point via the Controller’s keypad. Press and hold the  key, then press c key to in-
crease or, press d key to decrease set point. Once set, the Controller will display the actual temperature of the medium being
measured. The set point can be displayed at anytime by pressing the  key.
7. During operation, if the measured temperature exceeds the set point value, the alarm will sound. The alarm will continue to
sound until the measured temperature falls below the set value, or the set value is increased above the measured temperature.
Note: the sensitivity of the over temp function is set at +.1°C over set point.
88
Digital LED
Display
Main Power
Switch
UP KEY (▲)
CONTROL
KEY (*)
DOWN KEY (▼)
Thermocouple
Receptacle
Figure 1