Digital Temperature Indicators & RTD Probes
Accurate temperature surveillance is vital for controlling chemical synthesis and fractional distillation processes. Goel Glass supplies industrial-grade Digital Temperature Indicators (DTI Series) paired with Pt-100 Resistance Temperature Detectors (RTD) specifically dimensioned for immersion in borosilicate glass reaction kettles, distillation reboilers, and column heads.
The instrument operates on standard 230V, 50Hz electrical supply and features a high-contrast 3½ digit display (12.5 mm character height) providing continuous real-time readout in degrees Celsius. The accompanying RTD sensor is sheathed in chemical-resistant glass or PTFE protection wells to ensure rapid thermal equilibrium without exposure of metallic elements to corrosive process media.
| CAT. REF. | Vessel size | RTD Length |
|---|---|---|
| DTI20 | 20 | 400 |
| DTI50 | 50 | 500 |
| DTI100 | 100 | 600 |
| DTI200 | 200 | 700 |
Electro-magnets for Reflux Dividers
Goel Glass electro-magnets are engineered to actuate magnetically operated reflux dividers from outside the column wall without contacting process fluids or violating vacuum integrity. Mounted externally on the glass column frame with precision clamp brackets, the magnet generates a focused electromagnetic field that deflects the internal swinging funnel to take off distillate during its 'ON' duty cycle.
Available in non-flameproof (RPM) and explosion-proof flameproof (RPF) enclosures, these electromagnets operate on 220V DC supplied directly from the process reflux timer controller.
| CAT. REF. | Type |
|---|---|
| RPM | Non-flameproof |
| RPF | Flameproof |
Digital Reflux Ratio Timers
Goel Glass digital reflux timers (QRT Series) work in direct tandem with electromagnets to provide precision automated control over reflux and distillate discharge ratios. The microprocessor timer allows operators to set independent 'ON' (distillate take-off) and 'OFF' (total reflux return) cycle durations with digital accuracy.
Built in flameproof enclosures suitable for hazardous operating zones, these units operate on 230V, 50Hz mains power and supply 220V DC pulsed output to the external electromagnet.
| Cat. Ref. | Type |
|---|---|
| QRT | Flameproof |
Key Engineering Features
- Non-Invasive Magnetic Coupling: Controls reflux dividers through glass walls without internal mechanical linkages or seal leak paths.
- Precision RTD Sensing: Platinum resistance elements (Pt100) calibrated for rapid thermal response across -50°C to +200°C.
- Configurable Cycle Timing: High-resolution digital timer units allowing fine-tuned ratio splits from pure reflux to full distillate takeoff.
- Modular Mounting Brackets: Universal mounting hardware compatible with all standard Goel tubular structure frameworks.
Industrial Applications
- Fractional Distillation Columns: Automatic regulation of overhead reflux ratio for sharp boiling-point product cuts.
- Chemical Process Automation: Integrated temperature feedback for jacketed reaction and boiling vessels.
- Pilot Plant Monitoring: Direct digital display interfaces for laboratory operators and scale-up validation engineers.
- Solvent Recovery Systems: Continuous thermal and reflux control for high-purity recycled solvent collection.