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Specifications 

Inputs 

Power Input 

5 – 80VDC 

Outputs 

Heater Output 

 

Ambient 

25°C 

55°C 

70°C 

Current Rating, 60 

VDC Supply 

10 amps 

6.5 amps 

3 amps 

Current Rating, 80 

VDC Supply 

10 amps 

6.5 amps 

Not 

recommended 

 

For de-rating curve, see Figure 5. 

Heater Setpoint Range 

0.5

 to 500

 

Pulse Rate 

100ms to 60s 

Communication 

Optically via Status LED 

General 

Resistance/Temperature Setpoint Resolution 

1 milliohm 

Resistance Measurement Accuracy 

+/-3%: up to 55

°C and at least 0.25 amp load

+/-4%: up to 70

°C and at least 0.5 amp load

Dimensions 

1.50"L x 1.00"W x 1.00"D (3.81cm L x 2.54cm W x 2.54cm D). 

Weight 

Approximately 0.7 oz (20 g) 

Environmental 

Operating temperature: -25 to 70°C (-13 to 158°F) @ 90% relative humidity, non-condensing 

Storage temperature: -40 to 85°C (-40 to 185°F) @ 90% relative humidity, non-condensing 

Construction 

Epoxy potted polycarbonate case with one off-center mounting hole. 

Mounting 

Mounting hole for #6 screw or #8 thread-forming screw 

 

 

 

Summary of Contents for Heaterstat CT398

Page 1: ...CT398 HeaterstatTM Temperature Controller Technical User Guide...

Page 2: ...atus 2 Heater Settings 3 Output Settings 4 General Usage 5 Status Communication LED 5 Frequently Asked Questions FAQ 6 Specifications 7 Inputs 7 Outputs 7 Communication 7 General 7 Glossary 8 Document...

Page 3: ...easurement Pulse and Pulse Heating Depending on the characteristics of the thermal system the difference between the heater element temperature and the heat sink may vary significantly Since the CT398...

Page 4: ...agram for the CT398 Figure 1 Configuration A separate programmer model AC221332 is necessary to configure the CT398 This device optically communicates with the CT398 though the Status Comm LED To use...

Page 5: ...ature Resistance Data or Equation defines which method the program uses to convert resistance to temperatures Heater Code A string of characters which if provided with the heater fully describes the h...

Page 6: ...when not being used for PC communication The options are as follows Mode 1 LED to remain off during normal operation Mode 2 LED indicates when output is on for the purpose of heating but not including...

Page 7: ...ed to set these to values that would indicate a problem with the heater This feature is temporarily suppressed when HeaterStat Utilities is connected to a CT398 Figure 4 General Usage Status Communica...

Page 8: ...ification states the retention is at least 20 years and will withstand at least 1 million writes Q Why isn t the measured temperature of the heater surface the same as what is reported in the utility...

Page 9: ...esistance Temperature Setpoint Resolution 1 milliohm Resistance Measurement Accuracy 3 up to 55 C and at least 0 25 amp load 4 up to 70 C and at least 0 5 amp load Dimensions 1 50 L x 1 00 W x 1 00 D...

Page 10: ...request for heat but due to the heater being energized momentarily to check its temperature SSR Solid State Relay A type of relay without mechanical contacts constructed from solid state components TC...

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