Safety Instructions For Handling H2S Gas; Calibration; Calibration Specifications - Microtronics myDatasensH2S 1000 User Manual

14.6.1.1 Safety instructions for handling H2S gas

DANGER:
Extreme caution is required when handling calibration gases!
Hydrogen sulphide is a neurotoxic substance that can cause poisoning and even death
depending on the concentration.
It has the following effects on humans:
~ 0.1ppm: Odour threshold
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from 20ppm: Corneal damage following prolonged exposure
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approx. 100ppm: Irritation of the mucous membranes in the eyes and respiratory system, sal-
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ivation, irritation of the throat
> 200ppm: Headache, breathing difficulties
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> 250ppm: Impairment of the olfactory receptors
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> 300ppm: Nausea
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approx. 500ppm: Weakness, drowsiness, dizziness (life threatening within a few minutes)
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> 500 ppm: Seizures, unconsciousness (fatal within a few seconds)
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Long-term effects following exposure to low doses include tiredness, loss of appetite, headaches,
irritability, poor memory and a lack of concentration.
The greatest caution must therefore be exercised depending on the calibration gas used.
The maximum admissible concentration (MAC value) at the workplace for H2S is 10ppm.

14.6.1.2 Calibration

Note: The calibration of a myDatasensH2S 1000 must only be completed in a specially
equipped calibration space.

14.6.1.2.1 Calibration specifications

Important note:
No one is allowed to enter the calibration room without training.
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Employees must only use those gases or gas concentrations that they are trained to
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use according to the relevant risk potential.
Alcohol-based cleaning agents must not be used.
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Before entering the calibration room, the employee must have been in an environment
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free of alcoholic vapours for at least 30 minutes.
The ESD safety guidelines must be observed in the calibration room.
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Chapter 14 Maintenance
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