Ultrasonic Oxygen Concentration Sensor O2+Flow

Our most advanced intelligent spot detectors, multi-criteria/multi-sensor devices use multiple sensors to detect various conditions in an environment sensing a wider range of fires with greater accuracy.

Features & Benefits:

Multi-Criteria/Multi-Sensor smoke detection
Unique ability to detect major elements of a fire
Highest nuisance alarm immunity
Advanced algorithms interpret and respond to multiple inputs

O2-M2 Oxygen Sensor Description
Alphasense Oxygen sensors use capillary flow control.

Unlike partial pressure oxygen sensors, they have good pressure and temperature dependence, making them the best choice in safety applications.

Standard galavanic sensors use lead for greatest reliability but fixed lifetime.

Specifications
* Output: 80 to 120 uA @ 20.9% O2
* Response time t90: < 15 (s) from 20.9% to 0% O2


* Linearity: 0.6 % O2 deviation @ 10% O2
* Operating life: > 24 months
*Temperature range: -30 to 55 'C
* Pressure range: 80 to 120 kPa
* Humidity range: 5 to 95 % rh continuous
* Diameter: 20.0 mm (including label)
* Heigh: 17.4 mm (including foam ring)
* Weight: < 16g

Features
* oxygen pressure range 2 mbar - 3bar
* zirconium dioxide (zro2 ) sensing elements
* non-consumption technology
* integral heating element
* no need for temperature stabilisation
* no reference gas required
* high accuracy
* linear output signal
* operates with external interface boards

Specifications
Heater voltage:
Porous cap (15mm): 4.35v dc +/- 0.1v dc (1.85a)
Stand by: 2v dc (0.85a)
Pump resistance @ 700'C: < 6kOhm
Permissible gas temperature: -100 to 250C
Gas flow rate: 0 to 10 m/s
Repetitive permissible acceleration: 5 g
Incidental permissible acceleration: 30 g

O2-a2 oxygen sensor

Performance
Output î¼a @ 20.9% o2 80 to 120
Response time t90 (s) from 20.9% to 0% o2 < 15
Zero current î¼a in n2 < 2.5
Linearity % o2 deviation @ 10% o2 0.6

Lifetime
Output drift % change in output @ 3 months < 1
Operating life months until 85% original output of 20.9% o2 > 24

Environmental
Humidity sensitivity % o2 change: 0% to 95% rh @ 40â?? < 0.7
Co sensitivity % (change o2 reading) / % co2 @ 5% co2 0.1
Pressure sensitivity (% change of output)/(% change of pressure) @ 20kpa < 0.1

Key specifications
Temperature range â?? -30 to 55
Pressure range kpa 80 to 120
Humidity range % rh non-condensing (0 to 99% rh short term) 5 to 95
Storage period months @ 3 to 20â?? (store in sealed pot, open circuit) 6
Load resistor î© (recommended) 47 to 100
Diameter mm (including label) 20.0
Height mm (including foam ring) 17.4
Weight g < 16

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Zirconia O2 Sensors
Probe Series - Short Housing

The Probe Range of zirconium dioxide oxygen sensors are available in three lengths. Suitable for aggressive and polluted applications such as boiler exhausts. Longer probes are an ideal solution for thicker walled, insulated flue pipes.

FEATURES
* Zirconium dioxide (ZrO2) sensing elements
* Long life, non-depleting technology
* Integral heating element
* High accuracy
* Requires an external interface board to operate

BENEFITS
* No reference gas required
* No need for temperature stabilisation
* Compact enclosure

TECHNICAL SPECIFICATIONS
Heater voltage
Operating (standard response) 4V DC ± 0.1V DC (1.7A)
Standby 1.65V DC (0.7A)
Operating (fast response) 4.35V DC ± 0.1V DC (1.85A)
Standby 2V DC (0.85A)
Pump impedance at 700'C < 6kΩ
Permissible gas temperature -100'C to +250'C
Gas flow rate 0 ~ 10 m/s
Repetitive permissible acceleration 5g
Incidental permissible acceleration 30g

OUTPUT VALUES
Oxygen pressure range 2mbar ~ 3bar max
Accuracy 5mbar max
Internal operational temperature 700'C
Response time (10 - 90% step)
Standard response sensor < 15s
Fast response sensor < 4s
Warm up time (prior to sensor operation) 60s
Warm up time (from standby) 20s
Output stabilisation time ~ 180s

Zirconia O2 Sensors
Probe Series - Long Housing

FEATURES
* Zirconium dioxide (ZrO2) sensing elements
* Long life, non-depleting technology
* Integral heating element
* High accuracy
* Requires an external interface board to operate

BENEFITS
* No reference gas required
* No need for temperature stabilisation
* Two lengths available; 220mm and 400mm

TECHNICAL SPECIFICATIONS
Heater voltage
Operating 4V DC ± 0.1V DC (1.7A)
Standby 1.65V DC (0.7A)
Pump impedance at 700'C < 6kohm
Permissible gas temperature
Standard temperature -100'C to +250'C
High temperature -100'C to +400'C
Gas flow rate 0 - 10 m/s
Repetitive permissible acceleration 5g
Incidental permissible acceleration 30g

OUTPUT VALUES
Oxygen pressure range 2mbar - 3bar max
Accuracy 5 mbar max
Internal operational temperature 700'C
Response time (10 - 90% step) < 15s
Warm up time (prior to sensor operation) 100s
Warm up time (from stand by) 20s
Output stabilisation time ~ 180s

FEATURES
* Oxygen pressure range 2 mbar - 3bar
* Zirconium dioxide (ZrO2 ) sensing elements
* Non-consumption technology
* Integral heating element
* No need for temperature stabilisation
* No reference gas required
* High accuracy
* Linear output signal
* Operates with external interface boards

SPECIFICATIONS
Heater Voltage
Porous Cap (15mm) 4.35V DC ± 0.1V DC (1.85A)
Stand by 2V DC (0.85A)
Pump resistance @ 700'C < 6kâ?¦
Permissible gas temperature -100 to 250'C
Gas flow rate 0 to 10 m/s
Repetitive permissible acceleration 5 g
Incidental permissible acceleration 30 g

z

Oxygen sensor o2 gas sensor for portable gas detector
Model number: o2-a2


Performance
Output µa @ 20.9% o2 80 to 120
Response time t90 (s) from 20.9% to 0% o2 < 15
Zero current µa in n2 < 2.5
Linearity % o2 deviation @ 10% o2 0.6

Lifetime
Output drift % change in output @ 3 months < 1
Operating life months until 85% original output of 20.9% o2 > 24

Environmental
Humidity sensitivity % o2 change: 0% to 95% rh @ 40°c < 0.7
Co2 sensitivity % (change o2 reading) / % co2 @ 5% co2 0.1
Pressure sensitivity (% change of output)/(% change of pressure) @ 20kpa < 0.1

Key specifications
Temperature range °c -30 to 55
Pressure range kpa 80 to 120
Humidity range % rh continuous (0 to 99% rh short term) 5 to 95
Storage period months @ 3 to 20°c (store in sealed pot, open circuit) 6
Load resistor o (recommended) 47 to 100
Diameter mm (including label) 20.0
Height mm (including foam ring) 17.4
Weight g < 16