Model 204 Thermal Conductivity Analyzer for Process

- The Model 204 is a continuous TCD Analyzer designed for continuous or process control. It has optional 4-20 mA output, RS485, MODBUS, 2-3 programmable setpoints, larger pump, bypass flow & and a 19'' rack or industrial wall mount NEMA 4 enclosure.
- This 204 has a rugged TCD with a sealed reference cell, Operator's Manual, configuration software and RS232 cable. The detector is the TCD.
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Specifications
Species measured: | Sensor(s): | Precision: | Response time: |
He, H2, Ne, CO2, binary gases with a difference in thermal conductivity is required | single - TCD only | +/- 2-3% of reading | <10 sec. to 90% response |
Sample flow rate: | Span Drift: | Range: | Linear Range: |
> 1 LPM | <2% over 24 hours | 100 ppm to 100% | See range. |
Power consumption: | Dimensions: | Weight: | Instrument operating conditions: |
< 50 watts maximum; 115 VAC, 0.4 amps | 19'' Rack mount - 19'' W x 5 1/4''H x 14''D Wall - 23''W x 21''H x 10''D |
19'' Rack mount - 12.2 pounds TCD Wall - 19 pounds TCD |
5-40 degrees C, 0-95% RH (non-condensing) |
Performance: | |||
Depends on species being measured |
Features
TCD | Enclosures | Ease of calibration - SemiAutomatic or Remote Automatic | Display |
Our very stable TCD has a sealed reference to minimize maintenance. | 19'' rack mount or NEMA 4 wall mount. | The two point calibration for the TCD uses a zero gas and a span gas. It is initiated by a push button switch. The time to calibrate is about 1 minute. The FID requires zero air and span gas for calibration. In the 204, the calibration valves are built into the Analyzer. The remote calibration can be activated by a PLC controlled contact closure. | Our 2 line by 16 character display is backlit. The upper display provides the concentration and the bottom display provides the sensor, units, alarm and logging mode. For multisensor units, a 3 readout LED is used. |
ADC | Programmable Voltage/current output | Digital outputs | Programmable setpoints |
Our 16 bit ADC provides a resolution of 1 part in 64,000 and our signal algorithm minimizes noise by signal averaging in the msec range./td> | 0-1VDC/4-20 mA. | RS485, MODBUS. | The 1-3 setpoints (depends on the options) can be programmed for PID control, above/below setpoints. |
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