The Tracker 224 is a universal input indicator with 5 digit display which offers unparalleled price and performance packed into a standard 1/8 DIN case. The measurement performance is significantly better than that normally associated with indicators in this price range. It can be used for simple measurement-only applications or in more demanding situations requiring digital communications, alarms, maths functions and complex signal conditioning and re-transmission. The powerful menu-driven software enables fast flexible set-up from the front panel or via the serial communications interface.

Universal Input
The Tracker 224 series can be directly connected to most process sensors including thermocouples, RTDs (4-wire), 20mA loops, transmitters, or dc type signals. All thermosensor ranges have built-in linearisation curves and internal or external CJC is available. The display can show °C, °F or Kelvin (Absolute), with the decimal point position being user-adjustable to give the required measurement resolution or switched to automatic (auto ranging mode). Process inputs can be scaled to any engineering unit and any input can be mapped to one of the thermosensor linearisation curves. The Tracker 224 also has two status (Logic) inputs.

Transducer / Transmitter Excitation Supplies
The Tracker 224 digital panel meter includes an isolated 24V DC transmitter supply as standard to provide power for 2-wire (4-20mA) sensors. Also provided is a programmable 0-12 volt dc regulated output for strain gauge type sensors such as pressure transducers and load cells.

Analogue Output
The Tracker 224 is fitted with an electrically isolated analogue output which has 0.05% resolution. This can be configured by the user as 0-10 volt, 0-20 mA or 4-20 mA and can be scaled over any portion of the display range. For example, a type K thermocouple can be retransmitted as a linear 4-20 mA signal equivalent to 0-1000°C to another device such as a chart recorder or data logger. The output is linear to temperature (display value). The analogue output can be set to transmit the measured, the maximum, the minimum or the averaged value and has its own damping filter for noisy or fast moving signals.

Alarms
The Tracker 224 has four software alarms. These can be configured by the user for alarm type, setpoint, on/off delay and on/off hysteresis value. Alarms can be individually set to be latching or non-latching and to flash a message on the front panel display when active. Any of the four software alarms can operate a relay and a special AND logic function allows a relay to switch only if two or more alarm conditions are active. Relays can be configured to be energised or de-energised in the alarm condition.

Serial Communications
The Tracker 224 is fitted with an electrically isolated two or four wire RS 422/485 serial interface, which is compatible with most SCADA software packages. All measured values and set-up parameters are accessible, however, the instruments can be set to be read only, thus protecting their configuration. Two protocols are available; MODBUS and proprietary DTPI.

• Universal Input
• Isolated Analogue Output
• Digital Status (Digital) Inputs
• Transmitter & Transducer Supplies: 24V DC/Prorgammable 0-12V DC sensor excitation
• 4 Digital Alarm Set-points & 2 Alarm Relays
• Wide Ranging Power Input
• IP65 Front Panel
• Standard 1/8 DIN Size
• Programmable Function Buttons
• Maths Functions
• Serial Communications
• 5 Digit Display
• Isolated RS422/485 Serial Communications

Supply Voltage: 90-265V AC
Dimensions: 48mm (H) x 96mm (W) x 173mm (D)
Panel Cutout: 44mm (H) x 92mm (W)
Depth Behind Panel: 166mm including terminals

Data Track Part Number: 224-1-R

  Data Track Tracker 220 Series Process Indicators Datasheet