in-situ oxygen analysis for concentrations as low as 1 x ...€¦ · the current high cost of fuel...
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Model 1231 1232 Oxygen
Probes
The Novatech 1231 and 1232 Oxygen probesincorporate the world’s most rugged zirconiasensors. They are ideal for:• Flue gas analysis• Oxygen levels in boilers, kilns and furnaces• Combustibles analysis• Carbon potential measurement• Water vapour concentration and dew
point measurement• Inert and sterile packaging• General industrial use• Annealing furnaces
The Novatech 1231 and 1232 Oxygen probes areAustralian-made and embody the research anddevelopment of one of Australia’s premier researchorganisations, the CSIRO.
The Novatech 1231 and 1232 probes are highlyaccurate, and have minimal drift (±1%).
The Novatech in-situ probes are highly durable;choose the Novatech 1231 for analysing gaseswith temperatures below 900ºC and the Novatech1232 for temperatures 700°C to 1400°C.
The Novatech 1231 and 1232 probes have a veryrapid response to changes in Oxygen levels A response time of between 1 and 4 seconds to oxygenlevel concentration changes means that potentiallyhazardous situations such as those caused through thebuild-up of dangerous, fuel-rich conditions can be avoided.
The Novatech 1231 and 1232 probes are easy to installThe probes are inserted into the flue, or other measuringpoint, and the threaded nipple (1231 has 1.5 “ BSP/NPT;1232 has 0.75” BSP/NPT) is screwed on to a mating socketwelded to the process. Connect the probe cable to thetransmitter, and you are ready to measure and/or control thecombustion process.
Novatech offers you safety of operationUse the Novatech 1632 which has a main burner safetyinterlock. This is the ONLY reliable way of preventingpotentially explosive situations; SHOULD THE MAINBURNER FAIL OR SHUT DOWN THEN THE SENSOR’SHEATER IS DE-ENERGISED SO THAT DANGEROUSFLUE GASES CANNOT BE IGNITED BY THE PROBE!
In-situ Oxygen analysis for concentrations as low as 1 x 10-30 to 100%
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Optimum combustion reduces your fuel bill and helps the whole world and future generations by reducing harmful greenhouse gas emissions. The current high cost of fuel has helped to reduce the payback period for the cost of installing oxygen monitoring and air / fuel ratio control. It makes sense to consider the benefits of installing an oxygen system on your combustion process.
The 1732 oxygen transmitter is suitable for gaseous oxygen measurements in a variety of processes. These are some of those processes that the 1732 is designed for:
Optimum combustion reduces your fuel bill
Model 1732 Oxygen
Transmitter
Boilers • Power Generation
• Package
• Black Liquor Recovery
Iron & Steel • Heating Furnaces
• Coke Ovens
• Soaking Pits
Aluminium • Potlines
• Holding Furnaces
Incinerators • PVC
• Medical Waste
• Toxic Waste
Kilns & Furnaces • Rotary Lime
• Cement
• Glass
• Ceramic
• Brick
Nitrogen Purity • Generator
O2 Enrichment • Generator
Food Packaging • Continuous Monitoring
If your particular process is not listed above then we would love to hear from you. There is a good chance that Novatech Controls has an appropriate product for your process.
This is the sixth generation of zirconia oxygen transmitters designed and manufactured by Novatech Controls since 1980. This oxygen measurement is based on the world’s strongest zirconia sensor that was developed by the CSIRO’s Department of Materials Science. Novatech Controls holds the exclusive rights to manufacture this unique sensor.
This sensor, combined with the state-of-the-art 1732 transmitter, provides the perfect solution for your gaseous oxygen measurement.
Call your nearest Novatech distributor, or Novatech, to obtain expert advice for your particular application. We have been dedicated to designing and manufacturing the most reliable zirconia oxygen measuring instruments for more than 25 years.
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Specifications
Inputs• One or two zirconia oxygen probes or sensors• One zirconia sensor & auxiliary thermocouple type J,
K, R or S• Burner “On” signal (dry contact)• Purge air flow switch
Outputs• Four programmable alarm relays• Two isolated 4-20mA or 0-20mA• SSR outputs to purge & calibration check gas
solenoid valves
Range of Outputs• Linear oxygen sensor 1• Linear oxygen sensor 2• Average oxygen• Very low oxygen• Logarithmic oxygen• Reducing oxygen• Oxygen deficiency• Carbon dioxide• Probe EMF• Auxiliary temperature• Combustibles• Burner Efficiency• No Output
Alarms• Common alarm relay with 20 user selectable
instrument alarm functions.• Three programmable process alarm relays for very low
oxygen, low oxygen, high oxygen, oxygen deviation, probe temperature low, cal check in progress, purge in progress, plus any alarms that were not selected for the common alarm. Multiple selections can be made for all relays.
Alarm Contacts• Normally open failsafe (open for alarm state)• 2A / 240VAC, 2A / 30VDC
Range of Local Indication• 1.0 x 10-30% to 100% O2
• 0.01ppm to 10,000ppm – automatically defaults to exponential format below 0.01ppm and percent format above 10,000ppm (1%)
Serial / Network Interface• RS232• RS485 MODBUSTM
Secondary Parameter DisplayAny or all of the following can be selected for display on the lower line:• Probe #1 temperature• Probe #2 temperature• Probe #1 EMF• Probe #2 EMF• Probe #1 impedance• Probe #2 impedance• Oxygen % probe #2• Average oxygen %• Auxiliary temperature• Ambient temperature• Ambient RH %• Carbon dioxide• Combustibles• Oxygen deficiency• Burner efficiency
Accuracy• ± 1% of the actual oxygen reading with a repeatability of 0.5%. For example, at 2% oxygen the accuracy would be ±0.02% oxygen.
Operating Temperature• -25°C to 55°C• 5% to 95% RH (non-condensing)
Power Requirements• 85VAC to 265VAC 50 / 60 Hz• 5W
Degree of Protection• IP65• IP54 with internal reference air pump
Dimensions• 260mm W x 160mm H x 90mm D
Weight• 3kg
Data Sheet 1732
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Specifications
Data Sheet 1231 & 1232 Probes
Model 1231 1232
Applications: Combustion flue Combustion flue gases
gases below above 700°C with
900°C (Note 1) no contaminants
eg natural gas, light oils
Temperature Range: 0-900°C 700-1400°C
Length: 250-2000 mm 500-1000 mm
Process Connection: 11/2" BSP or NPT 3/4" BSP or NPT
Sheath OD: 34 mm 19 mm
Electrical Connection: Weather-proof plug-in connector or optional screw terminals.
Cable: 1231 Cable can be supplied with a separate polyurethane
reference airline. 1232 Cable has an integral airline.
Heater: Yes No
Internal Thermocouple: Type “K” Type “R”
Response Time: Typically < 4 seconds Typically < 1 sec
Head Temperature: 100°C Max 150°C Max
Reference Gas: Air 50 cc/minute approx. Pump can be supplied within transmitter
Calib’n Check Gas Flow: Approx. 2 litres / minute Approx. 2 litres / minute
Ref. Air Connection: 1/4" tube Integral air line through
connector or 1/4” tube
Particulate Filter (optional): Removable titanium Not required
30 µm stand'd, 15 µm opt'n
Calib’n Check Gas Connection: 1/8" NPT female 1/8" NPT female
Weight: 1.8 kg plus 0.16 kg/100 mm 0.1 kg / 100 mm length
Notes
1. Care must be taken to avoid contact with explosive or
inflammable gases with 1231 heated Oxygen probes
when hot. Novatech Oxygen transmitters have built-in
safety protection which disconnects the heater when
the main flame is off.
2. A separate flue gas thermocouple is required with a
1231 probe if a flue gas temperature display on the
transmitter is required. A 1231 Oxygen probe has an
integral type K thermocouple which is used to
control the sensor temperature.
Ordering Information
• Probe insertion length (from process end of mounting
thread to probe sensing tip). Standard lengths below
• Weather-proof plug or screw terminal connections
• No filter or standard 30 µm filter or 15 µm option
(1231 only)
• Process connection thread type, BSP or NPT
• Cable with plug connector or no connector
Standard Probe ‘U’ Lengths
1231 1232
250 mm 500 mm
350 mm 750 mm
500 mm 1000 mm
750 mm
1000 mm
1500 mm
2000 mm
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