Data sheet

PAT Oxygen Trace Analysers
for the ppm- and Vol-%-Range

Oxygen trace analyser PAT 3160

PAT Oxygen Trace Analysers for the ppm- and Vol-%-Range
with electrochemical sensor: PAT 3110 to PAT 3185
with ZrO₂ sensor: PAT 3190 and PAT 3195

Field of production / application
with electrochemical sensor: Series PAT 3110 to PAT 3185
with ZrO₂ sensor: PAT 3190 and PAT 3195

System features
with electrochemical sensor: Series PAT 3110 to PAT 3185
with ZrO₂ sensor: PAT 3190 and PAT 3195

The components of the PAT series with electrochemical sensor
PAT 3110 -portable system
PAT 3120 - best suitable for quick and precise measurements of trace Oxygen as well as of vol-% Oxygen.
PAT 3160 - a versatile general purpose instrument, also a 2-channel measuring system can be supplied to measure Oxygen and Hydrogyen simultaneously.
PAT 3175 - measuring Oxygen in gases in hazardous process environments, also for flammable and not flammable gases.
PAT 3185 - for very sensitive Oxygen measurements, the lowest measuring ranges is 0 ... 1 ppm.

The components of the PAT series with ZrO₂ sensor
PAT 3190 -Trace Oxygen analyser in inert gases, insitu with Lambda-probe
PAT 3195 -Trace Oxygen analyser for gases with trace impurities of combustibles

Technical data
Analysers with electrochemical detecto:r: Series PAT 3110 to PAT 3185
Analysers with ZrO₂ sensor (Lambda-probe): PAT 3190
Analysers with ZrO₂ sensor (Zirconia tube): PAT 3195

Product sheets for
PAT 31XX (PAT 3110 to PAT 3185)
PAT 3190
PAT 3195
Certifications for ATEX , Health and Safety by KEMA
PAT 3110
PAT 3175

Back to product program

PAT 31XX - Oxygen Trace Analyser for the ppm- and Vol-%-Range
with electrochemical sensor

Measuring Oxygen via electrochemical sensors (micro-fuel-cells) has been permanently improved over the last two decades becoming a reliable and suitable analysing method for process applications.

Today not only well-known standard applications but also the analysis of aggressive gases or very complex composition are routinely feasible. To comply with these demands the proper micro-fuel-cell has to be selected with regard to the electrolyte and the material of the electrodes.

For a reliable measurement, it is essential to take into account the actual process parameters. Temperature, pressure, composition, dust content and humidity of the sample gas determine both the design of the analyser and the selection of the suitable sensor.

Product sheet
PAT 31XX (PAT 3110 to PAT 3185)

PAT 3190 and PAT 3195 - Oxygen analysers for the ppm- and Vol-%-Range
with ZrO₂ sensor

Trace Oxygen measurement is a frequent necessity for process control and product quality monitoring.
Extending our well known PAT series 3100 employing electrochemical sensors the PAT 3190 and PAT 3195 have been introduced for the in-situ measurement of Oxygen via an Zirconia sensor.
The excellent response of the Zirconia sensor to very low levels of Oxygen has been well known for a long time.
For applications to gases without combustible components, the ZrO₂-sensor with platinum electrodes is widely used (PAT 3190).
Since platinum electrodes act as a catalytic oxidant even with trace amounts of combustibles (like H2, CO, CH4), electrodes without such an interference to the Oxygen measurement have been developed recently. The PAT 3195 features this specific kind of an ZrO₂-sensor.

Product sheets
PAT 3190
PAT 3195

Field of Production / Applicatios for PAT 31XX
systems with electrochemical sensor

Field of production	Applications
Manufacturers of industrial gases: air separation plants:	measurement in Nitrogen and Noble gases measurement in Carbondioxide or Hydrogen
Manufacturers of industrial gases, heat treatment plants in metallurgic industries:	measurement in Nitrogen, in Hydrogen and in Carbonmonoxide
Manufacturers of industrial gases, welding companies:	measurement in protective gas while welding high grade alloy steels like Titanium, Aluminium etc.
Chemical industry:	measurement in Ethylene, in Hydrogen or in complex gas mixtures
Breweries, food processing, chemical industry:	measurement in Carbondioxide
Manufacturers of industrial gases, chemical industry, metallurgy plants:	measurement in Ammonia

Product sheet
PAT 31XX (PAT 3110 to PAT 3185)

Field of Production / Applicatios for PAT 3190 and PAT 3195 -
analysers with ZrO₂ sensor

PAT 3190

• Fast in-situ measurement of trace Oxygen concentrations in inert gases, e.g. Helium, Argon, Nitrogen, Carbondioxide

• Fast in-situ measurement of trace Oxygen concentrations in inerts as well as in none inerts, also in the presence of impurities from combustible gases, especially Hydrogen, Carbonmonoxide and Methane

• Protective gases in the food processing industry
• Purity of Carbondioxide in brewing processes
• Blanketing gases in heat treatment, welding, soldering etc.
• Nitrogen and Argon quality in air separation processes
• Chemical and pharmaceutical production processes
• Protective gases in the electronics industry

Product sheets
PAT 3190
PAT 3195

System features PAT 31XX
systems with electrochemical sensor

• Five different measuring PAT instruments to fit to the particular analysing purpose and to the local conditions
• Three choices of mounting: wall or desktop or 19-inch slide-in, allowing online measurements or mobile operation
• For hazardous areas: portable unit for zone 1 and intrinsically safe 2-wire-transmitter
• Standard detector: micro-fuel-cell for all units, maintenanc-free and long living.
• Warranty: 6 months minimum lifetime for the sensor
• Four measuring ranges featuring
  the highest measuring range: 0 - 25 vol-%
  the lowest measuring range: 0 - 1 ppm
• Sensors best suited for measuring Oxygen in nearly 100% Hydrogen or in acid gases like Carbondioxide, and in Ethylene
• Automatic and/or manual calibration
• Specific sensors applied at difficult analytical conditions with respect to temperature, pressure, gas composition, dust or humidity
• Supplementary devices (optional) for:
  internal calibration,
  stabilising temperature for sensors,
  humidifying sample gas
• Standard feature of all units:
  built-in shut-off valves and flow meter for safe function and ease of operation
• Auxiliary components (options, built-in) for process automation to adapt to particular manufacturing conditions:
  sensor-bypass,
  purge valve,
  sample gas pump,
  flow meter with indicator
• Self diagnostics and alarms, digital interface
• 2-channel-instruments for analysing parallel Oxygen and (e.g.) for Hydrogen

Product sheet
PAT 31XX (PAT 3110 to PAT 3185)

System features of PAT 3190 and PAT 3195 -
analysers with ZrO₂ sensor

PAT 3190: Well known Lambda-probe with ZrO2-sensor is used for Oxygen detection
PAT 3195: Tube shaped ZrO₂ sensor with catalytical inactive electrodes

Common system features

• Mobile and stationary units
• Electronic controller: the supply- and evaluation unit for all AMS 3190/3195
• Comfortable operation mode with only three key strokes and self diagnostics
• Illuminated alphanumeric display for data and plain text messages
• Sample gas pressure up to 10 bar (only PAT 3195)
• Reference gas is ambient air, for most applications just one calibration gas will be needed
• Major advantages of this sensor: long lifetime, excellent signal/noise ratio at low O₂-oncentrations
• Extremely low detection limit: change of concentration of more than 0.05 ppm in the range of 10 ppm may be detected

Product sheets
PAT 3190
PAT 3195

THe components of the series PAT 31XX

PAT 3110 PAT 3110 is designed as a portable, easy to handle analyser. Applications are e.g. the analysis of inert gases, of protective gases - also in the presence of combustibles. There are three options for the power supply: 230 VAC, 230 VAC and rechargeable battery or battery only. Measurements in hazardous environments can be carried out with the intrinsically safe model powered by an epoxy casted lead battery. Optional components: Sensor-bypass and purge valve. Further available are (except for the EEx-ap-proved version): electronic flow monitor and a sample gas pump. Product sheet PAT 31XX (PAT 3110 to PAT 3185)

PAT 3120 The analyser PAT 3120 is best suitable for quick and precise measurements of trace Oxygen as well as of vol-% Oxygen. This has a favourable effect on controlling wide concentration ranges typical for heat treatment, welding and inertisation. In the chemical industry and in thermal engineering processes precise measurements of trace Oxygen as well as of vol-% Oxygen in gases with combustible components is a frequent analysing challenge successfully performed with PAT 3120. Due to its specific construction this system also meets the demands of high purity gas production. The PAT 3120 features a twin sensor arrangement, where one sensor is specific for ppm Oxygen and the other for vol-% measurements. Depending from the concentration range the proper sensor comes into action. Measuring vol-% Oxygen, as well as in the case of a short-time exposure to ambient air, the ppm-sensor will be protected against damage caused from high Oxygen contents; there is no longer waiting time for purging, less than 25 ppm Oxygen can be measured immediately afterwards. For the PAT 3120 two models are deliverable, a desktop unit for mobile applications and a 19-inch rack for stationary purposes. The PAT 3120 is fully process adaptable. A microprocessor controlls the electronics and the display, calibration and maintanance sequences are menu operated. Further auxiliary components the like as valves, gas pumps and remote control via RS232 (s. technical data/options) can be factory built-in, fitting the PAT 3120 for the automatic controlling of the Oxygen concentration in the production process just from the control room. A major advantage for the operator is the option for the internal calibration of the sensor. This measure leads to a lesser number of the gas consuming testing of the once determined calibration line. For lowest measurement ranges a sensor thermostat is offered as option. Employing this device, temperature effects to the quality of trace measurements of Oxygen can be minimized. A special feature of this analyser is the option for an external detector. Within the given pressure and temperature limitations it allows the direct measurement in process lines or bypass lines. Product sheet PAT 31XX (PAT 3110 to PAT 3185)

PAT 3160 The PAT 3160 is a versatile general purpose instrument. Typical application fields are air separation and gas purification plants as well as furnace atmospheres. In order to measure Oxygen and Hydrogyen simultaneously, a 2-channel measuring system can be supplied (s. picture). Four enclosure types are available: desktop and portable unit, 1/2 19-inch-19-inch plug-in (depending from the options built in) and a wall mountable housing. Auxiliary plug-in components (options): purge valve and sample gas pump, a sensor-bypass valve and the eletronic monitoring of the sample gas flow. A very special feature of this system is the option for an external detector. In this way measurements at difficult local circumstances can be reasonably carried out. Product sheet PAT 31XX (PAT 3110 to PAT 3185)

PAT 3175 Measuring Oxygen in gases in hazardous process environments, e.g. in chemical plants, is a major purpose of the analyser PAT 3175. This feature applies for flammable and not flammable gases. PAT 3175 is certified as 2-wire-transmitter for hazardous zone 1. When employing an intrinsically safe power supply this transmitter is also intrinsically safe according to ATEX II 2 G with protection degree EEx ia IIC T6. Two separate wall mounted cabinets (made of cast Aluminium) house the electronics and the gas wetted parts for the measurement. These cabinets carry their own certification EEx e II. Product sheet PAT 31XX (PAT 3110 to PAT 3185)

PAT 3185 The PAT 3185 is the system of choice for very sensitive Oxygen measurements. The lowest measuring ranges is 0 ... 1 ppm (via temperature stabilised sensor). Changes of the Oxygen concentration of < 0,1 ppm are detectable combined with a resolution of 0,01 ppm. Moreover the PAT 3185 comes as a extremely versatile instrument: for mobile use as a desktop or portable version, for local use as a 19“-rack or as wall mountable cabinet respectively. Similar to the PAT 3120 the PAT 3185 is fully process adaptable. A microprocessor controlls the electronics and the display, calibration and maintanance sequences are menu operated. Further auxiliary components the like as valves, gas pumps and remote control via RS232 (s. technical data/options) can be factory built-in, fitting the PAT 3185 for the automatic controlling of the Oxygen concentration in the production process just from the control room. A major advantage for the operator is the option for the internal calibration of the sensor. This measure leads to a lesser number of the gas consuming testing of the once determined calibration line. For lowest measurement ranges a sensor thermostat is offered as option. Employing this device temperature effects to the quality of trace measurements of Oxygen can be minimized. Moreover this analyser features also the option for an external detector. Within the given pressure and temperature limitations it allows the direct measurement in process lines or bypass lines. Product sheet PAT 31XX (PAT 3110 to PAT 3185)

The components of the series PAT 3190 and PAT 3195 with ZrO₂ sensor

The measuring system PAT 3190

The measuring system PAT 3195

(C) AMS GmbH 7.1/2007 Subject to technical modifications.   Text and drawings, draft and layout: Analytic Journal

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