Cold Weather Catalog - Chromalox Precision Heat and Control
Cold Weather Catalog - Chromalox Precision Heat and Control
Cold Weather Catalog - Chromalox Precision Heat and Control
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<strong>Control</strong>s®HTLS<strong>Heat</strong> Tracing LineSensing <strong>Control</strong> Panels• Solid State Relay OutputRated 30 Amps or Two-PoleContactor <strong>Control</strong> Output• Universal Inputs• NEMA 4/4X Enclosure• Ground Fault Alarm/Trip Monitoror GFI Circuit Breakers• Programmable High or LowTemperature Alarms• Programmable Low CurrentAlarm• Optional RS-485MODBUS ® Communications• 120, 208, 240, <strong>and</strong> 277 VAC• Optional <strong>Heat</strong>er for Sub-ZeroAmbientsDescriptionThe <strong>Chromalox</strong> HTLS series panels aremicroprocessor based temperature control<strong>and</strong> monitoring units for heat tracing used infreeze protection <strong>and</strong> process temperaturecontrol applications.This series of panels can be confi gured forambient or line sensing control. The HTLSseries implement a scaleable design suchthat they can be confi gured with or withoutcommunications, ground fault monitoring orenclosure heater.This unique format offers a design that can betailored both by price <strong>and</strong> features to meet themost challenging dem<strong>and</strong>s in heat trace applications.For example: The HTLS series can benetworked together via RS-485 MODBUS <strong>and</strong>the <strong>Chromalox</strong> Windows based ChromasoftSpecView software package.Two options are available for Ground FaultProtection. The Ground Fault Monitoringsystem has a reset pushbutton on the paneldoor that illuminates when a ground fault hasoccured. As an alternative, ground fault circuitbreakers are also available. Both Ground Faultsystems are rated for Equipment Protection.In the event of sub-zero temperatures, theoptional enclosure heater is available.The HTLS series have programmable inputs(thermocouple, RTD, mA, VDC), On/Off orPID control, Auto-tune function, High/Lowtemperature alarms, current alarm, <strong>and</strong> sensorfailure indication. The heat tracing circuit isswitched by a 30 Amp solid state relay rated at40˚C ambient or optional 2-pole contactor.The <strong>Chromalox</strong> HTLS series panel comesready to install <strong>and</strong> includes control <strong>and</strong> powerwiring terminal blocks for fi eld connections.Applications• Freeze Protection• Fuel Gas Preheating <strong>and</strong> Superheating• Fuel Oil Preheating• Hydrocarbon <strong>and</strong> Chemical Product Piping• Power Generation PlantsTechnical SpecificationsSupply Voltage:120, 208, 240, <strong>and</strong> 277 VacOperating Environment: 32 - 104˚F (0 - 40˚C)-32 - 104˚F (-34 - 40˚C) with enclosure heater optionCommunications: RS-485 MODBUS ®Input:Thermocouple J, K, L, N, R, S, RTD, Current, VoltageField Programmable for ˚C or ˚FOutput:Solid State Relay rated @ 30 amps @ 40˚C or optional2-pole contactorCurrent Alarm (Low): 0 - 30 amps in 1 amp incrementsGround Fault Alarm Trip: 5 - 100mATemperature Alarms: Process, Deviation, B<strong>and</strong>, High/Low, Latching/Non-Latching (Manual/Automatic Reset) Programmable.<strong>Control</strong> Modes:Field Selectable On/Off, PID, Auto Tune146