IJ-6 Software-based Temperature Controller
Description
The IJ-6 is a fully-featured software-based PID temperature controller which enables a wide range of temperature processes to be monitored and controlled. The unit, which is USB powered, provides connections to a thermocouple and solid-state relay for controlling an external process.
A user manual is available in the downloads section.
Click here to view a flyer (800KB PDF) for both the IJ-6 controller and IJ-7 demonstration module.
Hardware Features
Front panel
Rear panel
USB powered
The control unit is powered entirely from the USB port and does not require an external power supply.Thermocouple input
Five common types of thermocouple are currently supported - E, J, K, N, T - allowing temperatures in the range -270°C to +1300°C to be measured. Actual voltage resolution at the thermocouple input is 2µV, corresponding to a temperature resolution of 0.03°C to 0.06°C, depending on the thermocouple type used. The input voltage range at the thermocouple connector is -30mV to +80mV.Cold-junction compensation
The temperature of the thermocouple connector is measured with a precision of 0.03°C and is used to perform cold-junction compensation in the software by using the NIST ITS-90 thermocouple lookup tables.Relay outputs
A DC-drive output is provided which can drive an external solid-state or reed relay. Two additional normally-open relay outputs are provided, rated at 50V 200mA, for general-purpose use.Safety timeout
If communication with the host computer is lost, the controller automatically turns all its outputs off after a delay of around 7 seconds.
Software features
The control software can be obtained freely from the downloads section. A screenshot is shown below.
Control modes
Can operate in either manual (fixed output power) or PID (automatically controlled temperature) modes.Parameter display
All parameters are displayed in real time - ambient temperature (temperature of the thermocouple connector, used for cold-junction compensation), process temperature, setpoint temperature, and output power. Ambient, process, and setpoint temperatures are all displayed graphically.File logging
All parameters (time, temperatures, and ouptut power) can be logged to a text file for later processing.PID parameters and gain scheduling
The PID parameters (gain, integral time, derivative time) can either be fixed, or varied "on-the-fly" as the temperature changes by using gain scheduling. This can be useful when a system is operated over a wide range of temperatures. PID tuning is entirely manual, but full instructions are provided for several different tuning techniques.Programmable temperature profiles
Programs can easily be written to perform user-defined temperature profiles, with an unlimited number of ramp/soak segments and full control over program start/stop/pause and the general-purpose relay outputs.General-purpose relay control
The two general-purpose relay outputs can be controlled either manually, by the current process temperature, or by the user-defined temperature program. Temperature limits can be set to define where the relays switch.
Ordering
You can either order the IJ-6 controller on its own, or along with the IJ-7 demonstration module. Each controller will be supplied with a CD containing the control software and user manuals, a USB cable, and two PTFE-insulated K-type thermocouples suitable for use from -50°C to +350°C.
Please visit the product page to order.