Detailed Product Description

General
* The HL8102 series digital temperature controlleris a microprocessor-based controller with digital LCD display.
* The controller are used to control room temperature in industrial, commercial and residential environment via controlling electric modulating valve or damper with 0-10Vdc(4-20mA) signal or floating control.
* The controller provided proportional plus integral (PI) control with modulating and floating control output.

Application
* Temperature control for variable air volume (VAV) box
* Temperature control for VAV with reheat box
* Modulating / Floating valve
* Modulating / Floating damper
* Constant temperature control

Features
* Digital display of sensing temperature and user selected temperature setting on demand
* Proportional plus integral (PI) advanced control with analog signal output
* 0-5Vdc,1-5 Vdc,0-10Vdc or 2-10Vdc signal and floating output
* Direct / reverse acting output
* Output limited for over load protection
* Energy saving mode-external energy savings input (ESI) from card key or occupancy sensors
* Adjustable unoccupied setpoint for heating and cooling mode control
* Sleep mode control
* Model available for build-in or remote sensor (RS) function
* Remote control (RC) output for interlocking on/off control application
* Non-volatile memory (EEPROM) retains user settings during power loss
* Large LCD display with blue backlight
* °C or F display unit
* Adjustable maximum and minimum setpoint limits
* Adjustable deadband (some dual outputs model)
* Control off output when system switch at "OFF" position
* RS-485 network interface
* Modbus RTU protocol

Technical data
* Power Supply: 24Vac ( 10%), 50/60 Hz
* Setpoint Range: 0 to 99.5°C (programmable)
* Display Range: 0 to 50.0°C
* Display: LCD display
* Sensor: NTC
* Setting Unit: 0.5°C / step
* Indication Accuracy: 0.1°C
* Electrical Rating: 0.8 A run, 5 A inrush up to 250Vac
* Dimension: 86x86x23mm H x W x D