Temperature
- 50 Setpoint programs
- 8 Program event outputs
- Simple program editing
Standard screens provide the operator with an easy view of the programme running status including all those important features such as time remaining in segments and time remaining to end of programme.
The 3508/04 user interface offers the user an extremely easy method of editing, selecting and running programs and all programs can be given a meaningful name. Its programmer functions are very advanced and can be easily interfaced to remote instruments. A simple programme user value labeled carbon is used to set CP setpoint in each segment program editing can be achieved using a PC running the iTools Setpoint Program Editor.
Application blocks and graphical wiring editor
- Mathematical calculations
- Combination logic
- Real Time Clock
- Timing Functions
Operators include; Add, Subtract, Log, Exp, SQRT, AND, OR,Max, Min, Select and many more.
Application blocks allow the user to create custom solutions by internally wiring analogue and digital operations together in flexible ways. Up to 250 soft wired connections are available to produce intelligent control strategies. Other functions are available including timers, totalizers and a real time clock.
- Compatible with most zirconia probes
- Carbon, dewpoint or oxygen
- Automatic probe cleaning
- Sooting alarm
- Probe impedance monitoring
The 3508/04 can interface directly to most commonly available zirconia probes including Barber Colman, Drayton, SSI, Marathon and Bosch Lambda.
The zirconia probe input can be configured to measure carbon potential, dewpoint or oxygen making the 3500 ideal for applications such as carburizing furnaces and endothermic generators.
An automatic probe cleaning routine is available where either by a digital event or on a timed basis, an output is energized to perform a probe “burn off”. While the burn off is in progress and during a timed recovery period the measured PV is frozen so that closed loop control can continue. Other control options during cleaning can be configured.
Diagnostic facilities are also included. A sooting alarm indicates that potentially soot is about to be deposited in the furnace. Continuous measurement of probe impedance and automatic monitoring of the probe recovery from cleaning ensures optimum furnace operation.
