ThermokLogger

Introduction

The ThermokLogger-4A is designed to provide an affordable and easy-to-use differential temperature controller for solar heating systems. It is a four channel 10K thermistor display and data logger with programmable solid state relay outputs.

The ThermokLogger-4A records directly to a Secure Digital (SD™) card to provide convenient data downloads. To use the recorded data, simply insert the SD™ card into a card reader attached to a USB port on your computer (Windows, Macintosh, and Linux). To view and graph the data, click on the spreadsheet corresponding to the day of interest. Practically any spreadsheet program can be used to view, graph, and analyze your data.

Applications

The ThermokLogger can be used in both Solar Hot Water and Solar Hot Air configurations. Click here for diagrams illustrating these applications.

Live Internet Data

APRS World offers our World Data service free for our customers. Using an optional internet gateway module, our products can send live data to our hosted data service. Using your web browser you can view live and historical performance data and graphs. This allows your customer to see how their system is performing and allows you to troubleshoot the system without going on-site. Click here to see a sample live site.

Measurement Inputs
ThermokLogger-4A 4 x 10K Thermistor     Typically measure -40°C to 150°C (-40°F to 302°F)     Screw terminals and RJ-45 wired in parallel
ThermokLogger-4K 4 x K-type Thermocouple Inputs     Typically measure 0°C to 1024°C (32°F to 1875°F)     Screw terminals
Optional Pulse Counter     Screw terminals
User Interface
16x2 Character LCD, backlit
Three push buttons
Temperatures update once per second
Relay / Alarm status visible
Logging
Secure Digital (SD™) card or Multi Media Card™
Logs at 10 to 16,000 second intervals
Date and Time stamped measurements
Data files in Comma Separated Vertical (CSV)
One data file per day
Includes 2 gigabyte Secure Digital™ card
Supports 2 gigabyte or smaller cards
Power
8 to 32 volts DC     2.1x5.5mm coaxial connector or 2 position        screw terminal
Requires external power
Relay / Alarm Outputs
ThermokLogger-4A 2 x Solid state DC relay
ThermokLogger-4K 1 x Solid state DC relay
Independently programmable for:     Differential Control     On above temperature set point     Off above temperature set point     Always On     Always Off
RS-232 Communications
ASCII or binary data, selectable
Screw terminal, 4 position
Data compatible with our World Data internet service
9600 to 57600 baud
Can enable / disable Morningstar Tri-Star based     on temperature
Modbus RTU Support
Physical
Mounts in double gang electrical box or panel
3.7cm (1.45”) deep