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The Transdox 3100L oxygen analyzer allows fast and accurate oxygen analysis over the range 0.1ppm to 1% O2 using a special high precision ppm electrochemical oxygen cell, a range of CO2 concentrations from ppm up to 100%, range of CO concentrations from 0-3% up to 100% (range for CO2 and CO specified by the customer at the time of ordering) and range of H2O concentrations from either -60°C to +20°C or -100°C to +20°C dp (dew-point). This special low range analyzer is designed for applications where a traditional zirconia sensor is not suitable. This includes applications where the measurement gas contains VOCs, solvents, fuels, helium or hydrogen.
The analyzer provides continuous on-line oxygen, carbon dioxide and carbon monoxide analysis, with a typical response time less than three minutes for a response from 1% down to 1000ppm. Below 10ppm response times are considerably longer due to the way electrochemical sensors work. The dew-point sensors are OEM modules and have a typical response time of ten minutes for dew-point gas compositions.
The analyzer is fitted with a special cell housing which allows the reading to stabilize as quickly as possible, and is fully temperature and pressure compensated for enhanced accuracy. At the heart of the Transdox 3100L is a top-of-the-range Nitto motor-driven diaphragm vacuum pump. The flow of gas can be adjusted using the flow gauge/needle valve on the front panel of the analyzer. Typical flow rate is 1 liter per minute. Alternatively the pump can be independently switched off and operated under flowing gas conditions.
The O2 cell is very sensitive to exposure to high concentrations of oxygen, including air, and to prevent damage the unit is fitted with solenoid valves to keep the cell in the measurement gas at all times; even when switched off. An internal pressure sensor compensates for small changes in gas pressure to keep the readings stable. The dew-point sensors are high precision transmitters that are fully factory calibrated and is supplied with its own Calibration Certificate, providing direct traceability to Humidity Standards. The sensor is certified at thirteen dew-point levels across its operating range against a certified reference hygrometer, using a mass-flow humidity generator system as a source of reference calibration gas.
The analyzer is packed with features including fully programmable alarm circuits, programmable analogue outputs, easy calibration (user selectable gases), RS232 (optionally RS485) communications and a full set of communications/data-logging software that is MS Excel compatible. Optional swing handle, Peli-style carry case, printer and gas filters are available.
Features:
Specifications Transdox 3100L O2
Technical Data: Analyzer
Voltage |
90-260Vac, 50/60Hz |
Analyzer dimensions |
350mm x 263mm x 150mm |
Weight |
7 kg |
Display |
16 x 2 character (9mm) back lit LCD |
Warm up time |
3-4 minutes at 20°C |
Operating temperature |
5°C to 35°C |
Voltage outputs |
0-5V linear, user-programmable |
Current outputs |
4-20mA linear, user-programmable |
Digital outputs |
RS232 (RS485 option available): data streamed on demand |
Calibration |
Requires 1 or 2 user selectable gas mixtures |
Sample pump |
24Vdc motor-driven diaphragm pump |
Technical Data: Sensor
O2 Sensor |
0.1ppm to 10,000ppm; ±2% of reading |
CO2 Sensor |
0-5000ppm, 0-1%, 0-5%, 0-10%, 0-30% and 0-100%; ±2% of full scale |
CO Sensor |
0-3%, 0-10%, 0-30% or 0-100%; ±2% of full scale |
H2O Sensor |
-60°C to +20°C or -100°C to +20°C dp; ± 2°C dp |
Life expectancy |
2 years: O2, >5 years H2O, >10 years CO2 & CO |
Response time O2 (gas flow rate 1ltr.min-1) |
< 180s from 10,000 to 1000ppm |
Response time CO and CO2 |
T90 approximately 10s (90% response time) |
Response time H2O (gas flow rate 1ltr.min-1) |
Approximately 10 minutes for a 90% step change in dew-point |
Maximum free air displacement |
7 litres per minute (0-28 cfm) |
Noise level |
45db (max) at 1 meter |
Maximum inlet temperature |
50°C |
Sample connections |
4mm ID / 6mm OD nipple type |
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