- Now with serial control or user friendly interface and control/monitor program on Windows
- Enhanced thermal stability
- Smaller, compact controller housing
Like our venerable TCD-2, our new TCD-3 is a dual filament, stand-alone thermal conductivity detector consisting of the detector housing and separate controller. However, the analog controls of the TCD-2 are replaced with full digital control implemented via a user interface or command console commands. Thermal stability is maintained in the detector to within 0.010°C, producing a stable, low-noise signal.
The TCD-3 controller generates an independent analog output signal for each of the detector filaments. In additional, a referenced analog output signal is generated by subtracting the output signal of one filament channel from the other. Each of these three output signals is provided in two full-scale spans: a ±1 volt scale and a ±10 volt scale.
TCD control program
The Windows-based control program (download at right) makes it easy to monitor unit performance and to set parameters such as detector temperature and filament power.
Product numbers
| Description | Filaments | VAC | Product No. |
|---|---|---|---|
| Entire unit (Includes cell, electronics, power supply, cables, and fittings) |
Nickel-iron | 110 | TCD3-NIFE |
| 230 | TCD3-NIFE-220 | ||
| Tungsten-rhenium | 110 | TCD3-WRE | |
| 230 | TCD3-WRE-220 | ||
| Dual filament cell/oven assembly | Nickel-iron | 110 | TCD3-NIFED |
| 230 | TCD3-NIFED-220 | ||
| Tungsten-rhenium | 110 | TCD3-WRED | |
| 230 | TCD3-WRED-220 | ||
| TCD-3 controller | 110 | TCD3-C | |
| 230 | TCD3-C-220 | ||
Hardware specifications
| Parameter | Minimum | Nominal | Maximum | Units | Notes |
|---|---|---|---|---|---|
| Controller input voltage | 44 | 48 | 52 | V | |
| Controller input current | 0.1 | 1.5 | A | Vin = 48 Vdc | |
| Input fusing | 2.0 | A | Internal fuse, time delay type | ||
| Operating Temperature | -10 | 40 | °C | ||
| Storage Temperature | -25 | 70 | °C | ||
| Humidity | 0 | 95 | % | Non-condensing | |
| Controller weight | 1.4 | lbs. | Without cables | ||
| Detector cell weight | 3.0 | lbs. | Standard configuration | ||
| Detector temperature | ambient | 300 | °C | ||
| Detector pressure | 1 | 1000 | psi | Working pressure | |
| Heater power | 60 | W | Vin = 48 Vdc | ||
| Analog output (1V) | -1.2 | 1.2 | V | 1V output signal | |
| Analog output (10V) | -12 | 12 | V | 10V output signal | |
| Analog out impedance | 100 | Ω | |||
| Digital inputs | -0.5 | 5.5 | V | Internal 4.7Ω pull-up to +5V | |
| Digital input, logic high | 2.0 | V | Minimum logic-high threshold | ||
| Digital input, logic low | 0.8 | V | Maximum logic-low threshold | ||
| Digital output, voltage | -50 | 50 | V | Open contacts; maximum volts | |
| Digital output, current | -0.5 | 0.5 | A | Continuous current rating |
