EnviteC – MySign O


The oxygen measuring device MySign® O is designed to determine and monitor inspired oxygen concentrations in breathing gas.

Mysign® O can be used for monitoring the breathing gases dispensed by the following devices:

  • Anaesthesia breathing systems
  • Respiratory equipment
  • Infant incubators
  • Oxygen therapy systems

The systems is suitable for use inside hospitals as well as during transport (except by air), emergencies and artificial respiration provided at home.


Measuring range: 0-100% oxygenMeasuring range: 0-100% oxygen
Display accuracy: 0.1% oxygenDisplay accuracy: 0.1% oxygen

< 1% vol. O2, if calibrated

with 100% vol. O2

Offset:< 1% vol. O2 in 100% N2
Response time:90% of final value in < 12 sec.
Linearity error:< 3% relative
Drift:< 1% vol. O2 over 8 hours
Cross sensitivity:in compliance with DIN EN ISO 21647
Operating humidity:0 – 99% relative humidity (non-condensing)
Effect of humidity:0.03% relative per % RH
Ambient pressure: 750 to 1250 hPa
Effect of pressure: proportional to change in oxygen partial pressure
Sensitivity to impact: < 1% relative after drop from 1m
Operating temperature: 0°C – 50°C
Temperature compensation: integrated NTC compensation in the sensor
Storage temperature: -20°C – 70°C (device), -20°C – 50°C (sensor)
Recommended storage (sensor): 5°C – 15°C
Sensor type: OOM 111 (galvanic oxygen sensor)
Sensor life: > 1.000.000 % O2 h
Battery: Li-ion 3.6 V 2900 mAh
Operating time per charge: > 24 hours (at standard settings)

USB, Protection Class II, Input: AC 110V – 230V/

50 – 60 Hz/125mA, Output : DC 5V / 1,5 A

Charge time: approx. 4 hours
Display: 2.8” multicolour TFT (240 x 320 dots)
Dimensions (device): 160 x 72 x 39 mm (H x W x D)
Cable length: coiled cable 0.5 m (max. 2.5 m)
Protection class: IP 54
Impact resistance: IK 05
Weight: 330g (with sensor)
Interface: USB 2.0
Alarm functions: monitoring of alarm limits and device

functions (optical and acoustic)

Alarm limits: adjustable between

Upper limit: 20% – 103%

Lower limit: 18% – 101%

Data storage: max. 96 hours (measurement series) reading

date, time, alarm limits, events

Personalisation: device and data set (e.g. name, station, patient ID)
Protection Class: II, Type BF
Standards: The device complies with the requirements of MDD 93/42/EEC for medical devices and the applicable standards. Also in compliance with: DIN EN 1789 Medical vehicles and their equipment – Road ambulances
Class: IIa
Conformity: CE 0123



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