1234 Oxygen Sensor

1234 Oxygen Sensor

Oxygen Measurement Made Simple


The Novatech 1234 Oxygen Sensors are ideal for:

  • Flue gas analysis
  • Inert atmosphere measurements
  • Modified Atmosphere Packaging
  • Inert and sterile packaging
  • General industrial use
  • Scientific tasks
  • Gas purify analysis

Reasons for using Novatech 1234 sensors

  • Usable for Oxygen measurement in many processes
  • Adapts to positive and negative pressure process streams
  • Suitable for many corrosive situations
  • Low maintenance and high accuracy

The Novatech 1234 Oxygen Sensors

  • Easy-to-operate, reliable, no regular calibration needed
  • Select ancillaries for your application
  • Accurate, rapid response, low drift Zirconia Oxygen sensor: 1 ppm to 100%
  • Connect to the Novatech 1730 Series Oxygen Analysers, analog input card on a PC, PLC, or DCS

Accuracy and reliability

  • The Novatech 1234 Oxygen sensors provide accurate and virtually drift-free measurement for years.

Adapting the Novatech 1234 to your application

The Novatech 1234 sensors are available for Oxygen measurement in a range of applications by using ancillary equipment including:

  • Process sampling probes available to suit your application
  • Integral electric pump and filter assembly for aspirating samples
  • Filters for dry dust, wet dust or hydrocarbons
  • Flow meter

The Novatech 1234 sensors are responsive

Accurate readings can be made with sample response times as short as 3 seconds to changes in gas composition for Oxygen.

Range of Measurement 1 ppm to 100% oxygen
Sensor Output EMF = 2.154 × 10⁻² × T × logₑ(0.209 / oxygen level)
Response Time • 1234C : 5 seconds with a gas flow of 2 litres / min
• 1234E : 3 seconds with flows from 0.5 to 25 litres / min
• 1234M : 3 secs with flows from 0.1 to 0.5 litres / min
Accuracy ±1% of actual reading
Thermocouple Type K
Warm Up Time Seven to ten minutes
Heater Power 110VAC, 50/60 Hz, 115Watts
Flow Rate Range 0.1 to 25 litres / min
Gas Connection 1/4” tube inlet and outlet (1/8″ tube outlet for 1234C)
Sample Aspiration Convection flow from hot furnace or flue, from process pressure, electric pump or air operated ejector (for 1234E model only).
Environmental Non weather proof cabinet. If mounting outdoors, a weather-hood is required for electrical protection.
Do not enclose in sealed cabinet or overheating may occur. Your cabinet should be vented.
Ambient Temperature 0°C to 100°C,(32°F to 212°F)
Weight 2.2 Kg
Dimensions 300 mm x 125 mm x 88 mm
(11.4″ x 4.9″ x 3.5″)
Optional Sample Pump External electrical diaphragm pump, 240 / 110 VAC, or air operated ejector, 30 to 100 kPa
Optional Process Sampling Tube, Filter and Bush Stainless steel filter, 500ºC max. Process connection bush 1.5” BSP or NPT to 3/8” tube. (3/8”, 16 gauge tube supplied by others)
Mounting Vertical surface mount, brackets supplied
Ordering Information • 1234C If sample is delivered from process or pump
• 1234E If sample is drawn from the outlet by suction, specify mains voltage on 1234E, 240V or 110V
• 1234M For low flow rate requirement
Accessories • Integral electric pump and filter assembly MV-10F (fitted on top of your 1234 sensor)
• Air operated ejector (for 1234E model only)
• Sampling probe filter and bush, tube by others
• Filters for dry dust, wet dust or hydrocarbons
• Flow meter
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