Chemglass CG-3498 User Manual

Digital Temperature Monitor

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3498

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3800 North Mill Road • Vineland, NJ 08360 • USA
Tel: [phone] • Fax: [phone]
Web: www.cglifesciences.com

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REV: CG12A

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FEATURES:

1. Digital LED Display.

CONTROL

KEY (*)

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Digital LED
Display

2. Illuminated ON/OFF Switch.

3. Circuit protection.

4. +/- 1 °C Accuracy.

5. Detachable Power Cord.

6. Audible Alarm

DOWN KEY (▼)

Thermocouple

Receptacle

UP KEY (▲)

Main Power
Switch

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.

Figure 1

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 in­crease 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.

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CONTROLLER CONFIGURATION factory settings (T type):

LEVEL 1

tune band int.t der.t dac cyc.t ofst sp.lk set.2 bnd.2 cyc.2

off .1 off off .5 on.of 0.0 off 0.0 .1 on.of

LEVEL 2

sp1.p hand pl.1 pl.2 sp2.a sp2.b disp hi.sc* lo.sc* inpt* unit

100 off 100 100 dv.hi none 0.1º 250 -199.9 t ºC

LEVEL 3

sp1.d sp2.d burn rev.d rev.l span zero** check read data ver rset

ssd rly up.sc 1d2d 1i2n 0.0 #.# off var ct A 3 none

*for Type “K” thermocouple - hi.sc=999.9, lo.sc=-50, inpt=k **zero value is set at factory

Changing Display from °C to °F

The display units can be changed by depressing both the ▲ and ▼ keys simultaneously. Once “tune” is displayed, the keys may
be released. Then depress the ▼, until “LEVL” is displayed. Depress and hold the * key. Then press the ▲, until the display
reads “2”, then release the * key. Now depress the ▲, until the display reads “unit”. The display will alternate between “°C” and
“unit”. Depress and hold the * key. Then press the ▲ to display “°F”, then release the * button. The change will be saved by

either depressing both the ▲ and ▼ keys simultaneously and releasing when the measured temperature is displayed. Or, if no
other keys a pressed after about 60 seconds the changes will be saved and the measured temperature will be displayed.

Changing Sensitivity of Alarm set point - Factor y set to +.1°C

The alarm set point sensitivity can be changed by depressing both the ▲ and ▼ keys simultaneously. Once “tune” is displayed,
the keys may be released. Then press the ▲ until “bnd.2” is displayed. Depress and hold the * key. Then press the ▲ to enter
the desired sensitivity value, then release the * button. The change will be saved by either depressing both the ▲ and ▼ keys

simultaneously and releasing when the measured temperature is displayed. Or, if no other keys a pressed after about 60 seconds
the changes will be saved and the measured temperature will be displayed.

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SPECIFICATIONS:

Sensor Types -

Supply Voltage - 120VAC or 240VAC +/-10%, 50-60 Hz Dimensions h x w x d (in) - 3 x 2½ x 5
Ambient Temperature - 0 to 50°C, 32 to 130°F Fuse - 1A/250V, 5 x 20 mm, fast acting

TYPE RANGE °C RANGE °F COLOR ACCURACY °C

CG-3498-01 (T) -200 to 250 -273 to 482 Blue +/- 1
CG-3498-20 (K) -50 to 1200 -58 to 2192 Yellow +/- 1

TROUBLESHOOTING:

“inPt” “FAiL” flashes Temperature sensor is unplugged, corroded, or broken Ensure Sensor is plugged in. Clean, or replace

No display when switch ON Blown fuse, no power from source Replace fuse. Check source circuit

Problem Possible Cause Corrective Action

Warranty

Chemglass, Inc. warranties this unit against defects in material and workmanship for a period of two years from the date of sale. If
the unit should malfunction, it must be returned for evaluation. If the unit is determined to have a defect in materials or workman­ship, then it will be repaired or replaced at no charge. Tampering with the unit or damage resulting from excessive current, heat,
moisture, vibration, corrosive materials, or misuse will void this warranty. Programming changes or reconfigurations are not cov­ered under warranty.

To return this item under warranty, advise the Chemglass technical service department of the situation and they will provide you
with a return authorization number. The unit will be evaluated and repaired as required in accordance to the warranty.

Please contact the Chemglass technical service department with warranty repair information.

Chemglass technical service department:

Tel: [phone] ext. 2124

Fax: [phone]

Email: [e-mail]

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