Data Track's process control & instrumentation solutions cover a wide variety of different applications.
Here are some examples of the type of applications for which you could use our products.
Temperature Control & Display
Tracker 200 series panel meters for applications requiring temperature display.
Tracker 300 series of DIN rail mounted PID temperature controllers and transmitters.
Industrial Temperature measurements are usually using Thermocouples, RTD or other Resistance sensors. Some applications a 2-wire transmitter may be used, particularly if distances between the sensor and the instrumentation are large.
The following instruments can measure thermocouples and RTD directly or power and measure 2-wire transmitters.
All the products listed above have the following as standard or can be fitted as an option:
Using the user calibration feature, the Tracker and sensor can be match calibrated together where the instrument measures and stores the sensors signal at two known temperatures. This greatly reduces errors due to sensor output variations. The displayed values can be in °C or °F (and Kelvin on the 220 and 300 series).
All Tracker temperature measuring instruments have an automatic Cold Junction Compensation (CJC). On the Tracker 220 series the user can also select an external reference junction temperature and select up- or down-scale sensor break detection.
In applications where non-linearising temperature transmitters are used, the Tracker 220 series can linearise a 4-20 mA signal to the required thermocouple curve.
Tracker 300 Temperature Controller / Transmitter
The Tracker 300 series can be used for temperature transmitter or used as a fully featured temperature PID controller - or both!
The Tracker 300 series of fully featured DIN rail mounted PID controllers, primarily designed for modern "HMI / SCADA" supervised control systems but still retaining the systems single loop integrity.
The Tracker 331 and Tracker 332 PID temperature controllers enable you to plan for more effective maintenance by monitoring thermocouple ageing and the health of electrical loads. The Tracker 300 series can be configured to send an alarm if the thermocouple shows signs of deterioration and needs replacing before it fails in service.
Checks are also made for partial electrical load failure or other heater problems such as SSR faults, shorts and open circuits.
Pressure & Weighing
A variety of pressure transducers, pressure transmitters or strain gauge bridges can be connected to a Tracker 211, 220, 240 or any of the 300 series.
Pressure and weighing sensors are generally supplied as a 350Ω strain gauge bridge device, requiring a regulated excitation supply and outputting a millivolt signal, or a 2-wire transmitter which requires a 24VDC supply and outputs a 4-20mA signal.
The following instruments can power and measure both these sensor types:
For multiple load cells (multiple strain gauge bridges):
All the products listed above have the following as standard or can be fitted as an option:
Using the user calibration feature, the Tracker and sensor can be match calibrated together where the instrument measures and stores the sensors signal at two or more pressures or weights. This greatly reduces errors due to sensor output and excitation supply voltage variations. The displayed values can be in any engineering units.
On the 200 series a front panel button, or status (logic) inputs on some models, can be configured to provide an auto zero feature allowing zero offset errors to be eliminated. For weighing applications, a tare function can be similarly configured.
For zero and tare functions on a T300 command must be sent via the RS485 interface or remote switches connected to the status inputs on the T340 logic expansion module.
The Tracker 200 digital panel meters and 300 series DIN rail of instrumentation for the measurement of process signals.
Industrial signals are loosely associated as process are 0-5VDC, 0-10VDC, millivolts DC and the most popular 20mA loops (e.g. 4-20mA). These are scaled as a range in engineering units e.g. 0-10VDC = 0-500 Litres Per Hour.
The Tracker Instruments that can accept ±20mA, ±10VDC and ±100mV are:
All of the above have as standard or can be fitted as an option:
All the instruments listed above can also connect directly to thermocouples and RTD temperature sensors making their inputs "Universal".
Injection Moulding & Extrusion
You can use any Tracker in the 330 range as a PID controller for injection moulding and extrusion..
You can use any Tracker in the 330 range as a PID controller for injection moulding and extrusion.
The Tracker 330 range provides single loop integrity for multi-loop control applications, such as those used in plastic extrusion applications. With heat / cool outputs as standard, the Tracker 330 range can also monitor the health of the electrical heaters and the condition of the thermocouple, allowing planned sensor replacement.
Common extrusion applications that you can use the Tracker 330 range for include:
The Tracker 331 & 332 are fully featured Auto Tuning PID controllers providing genuine single loop integrity.
Fully Featured PID Controller
The Tracker 331 and 332 DIN rail mounted modules were designed to be part of a "HMI / SCADA" supervised control system but retaining single loop integrity.
Key Features include:
Communications Loss self defence
A number of user selectable "self defence" features ensure safe operation of the process during a loss of communication with the "Master" device, usually a PC or HMI.
Control output options include pulse width modulated (PWM) SSR drive, relay or an analogue output (0-10V or 4-20mA) can be used as a control output or for transmission of the measured value.
Isolated analogue outputs.
Analogue outputs are used to isolate and transmit a value in form of a analogue signal. For example to transmit a temperature measured by a Type K Thermocouple as 4-20mA = 0-500°C
The following Instruments have analogue outputs or options:
The output can be configured to transmit the measured value or the averaged, maximum or minimum value. It has its own damping filter for noisy or fast moving signals. The input can be locally conditioned and re-transmitted over a long distance. Being electrically isolated, problems associated with earth loops causing noisy and inaccurate measurements are eliminated.
If 4-20mA outputs are configured then the analogue output signal will not fall below 4mA or exceed 20mA.
Remote Data Acquisition
Tracker Instruments are Modbus RTU compatible for compatibility with most data acquisition software.
The RS485 serial interface on Tracker instruments are electrically isolated and have four protocols including the widely used Modbus RTU. This allows a centralised "Master" device (e.g. a PC) running a data acquisition program to pole "slave" devices to receive real time data. This data can be viewed graphically in real time, archived for review later and give alarm alert if the values are outside preset limits.
Some system also allow values to be sent from the Master to the slaves, e.g. Setpoint values.
Demonstration data acquisition software can be downloaded here.
The following instruments have a RS485 interface fitted as standard:
You can connect up to 32 devices to a single master device in a multi-drop configuration. You can control the display and analogue output via the serial interface, allowing any device to be used as a remote display or control device.
Comprehensive alarm functions are built into the Tracker Instruments.
All Tracker instruments have alarm output options with volt free relay contacts and TTL outputs on some models. On the panel meters an alarm state message can be flashed on the display along with the measured value.
The following instruments have alarm outputs and options:
C/O = Volt free Change Over contacts, N/O = Volt free Normaly Open contacts.
On the Tracker 211 low cost series the following alarm parameters are available:
All other instruments (per alarm):
The hysteresis facility stops noisy signals switching outputs rapidly (relay chatter).
High and low deviation creates a band around the set-point value. The alarm will be activated if the measured value is out of this band.
On and off delay times can be set to stop fleeting alarms. The measured value must be continuously in the alarm condition for the time set before the alarm becomes activated.
Individual alarms configured as latching or non-latching. Latched alarm require to be acknowledged by the front panel push buttons or, on models fitted with status inputs, via remote volt free contacts.
Fill & Trickle Feeder Control
The Tracker 240 digital panel meter has relay or TTL outputs for batch filling applications.
The Tracker 244 and 225 have 2 relays with volt free contact or 4 TTL outputs respectively. These outputs can be used for alarms or for a batch control filling sequence.
The filling modes can be "Fill", where the container to be filled is on the load cells, or "Loss of weight" where the product's reservoir/tank is on the load cells.
Typical Fill Control Sequence
This sequence will detect a new empty container is in position and will fill to 97Kg (Setpoint 1 / Output 1) and then trickle feed to 100Kg (Setpoint 2 / Output 2) to avoid over filling.
* The sequence will be terminated immediately if the cut-off time is exceeded.
** The actual fill weights are stored to calculate the in-flight set-point adjustments for the next sequence to improve filling accuracy.
Timer / Counter
The multitude of functions on a Tracker 280 make it ideal for this role.
Applications for the Tracker 280 digital panel meter include:
Maths functions include:
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