Overview
Offering accurate, high resolution and reliable temperature measurements up to 1650°C (3000°F), the FG thermometer enables precise control of process temperatures in the glass industry.
A simple, cost-effective alternative to tri-level thermocouples for some zones measuring bulk glass temperature which is independent of glass level. FG’s highly stable temperature measurement is available in five temperature spans for maximum cross-application flexibility.
Containing AMETEK Land’s market-leading infrared measurement within an advanced optic head, FG is easily installed in the furnace and linked by multi-core fiber-optic light guide to a remotely located signal processor unit.
FG’s flexible design means it not only can monitor and control glass or refractory temperature in the forehearth but also in the regenerator, tank, and refinery, as well as other spot measurements required for glass production.
SIMPLE AND COST-EFFECTIVE
FG offers long-term, drift-free operation with no on-line calibration requirement. The signal processor unit is located away from the high temperatures at the optic head, linked by a multi core fibreoptic light guide.
EASY TO INSTALL
The two-wire 4-20mA current loop system makes the FG simple to install. A versatile adjustable mounting assembly, complete with quick release adapter and air purge, provides ease of installation and removal for inspection purposes.
HIGHLY FLEXIBLE MEASUREMENT
In addition to monitoring and controlling glass or refractory temperatures, FG can monitor and safeguard vulnerable refractory materials such as the crown, detect possible firing imbalance at the port arch, and give improved control of bulk glass temperatures.
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| Measurement Ranges | |
| Model | Temperature Range |
| FG 9.8/13C | 980 to 1300 °C |
| FG 18/24F | 1800 to 2400 °F |
| FG 10/14C | 1000 to 1400 °C |
| FG 12/16.5C | 1200 to 1650 °C |
| FG 22/30F | 2200 to 3000 °F |
| Accuracy | |
| Interchangeability | ±2 °C / 4 °F |
| Resolution | 0.1 °C |
| Linearisation Conformity | <0.5° |
| Temperature Coefficient | <0.04 °C / °C – mid span |
| <0.07 °C / °C – extremities | |
| Absolute | 5 °C |
| General Specifications | |
| Output | 4 to 20 mA (linear) |
| Response Time | 0.5 s (to 98%) |
| Spectral Response | 0.7 to 1.0 µm |
| Emissivity | 0.10 to 1.00 adjustable (factory set to 1.00) |
| Field of View | 100:1 + 10 mm/0.4 in |
| Dimensions | |
| Processor | 160 x 75 x 55 mm / 6.3 x 2.9 x 2.2 in |
| Optic Head | 106.5 x ∅ 18.5 mm / 4.2 x ∅ 0.7 in |
| Ambient Temperature Limits | |
| Optic Head | 200 °C / 400 °F |
| Light Guide | 175 °C / 350 °F |
| Processor | 10 to 60 °C / 50 to 140 °F |
| Power | |
| Power Requirement | 24V d.c. (nominal) 18 to 40V d.c. |
| Over Voltage Protection | 250V a.c. |
Glass & Ceramic Industry
- Accurate and reliable measurement up to 1650°C/3000°F – ideally suited to control of process temperatures in the glass industry
- 2-wire 4-20mA current loop system – ensures simple installation
- 200°C ambient temperature limit on optic head – minimal services and no water cooling required
- Built-in test facility – ensure optimal performance
- No on-line calibration required – Long term, drift free operation
- Calibration traceable to National Standards, backed by ISO9001 Quality Management
- System – measurement accuracy assured
Thermocouple Replacement
Model FG fulfils the industry’s need for a simple, cost effective alternative to other types of radiation thermometers which normally require water cooling. It also readily permits upgrade from existing thermocouple installations