Fachhochschule Bonn-Rhein-SiegSafety Instruction FB 05 1 Welcome to the laboratory specific Safety-Instruction for the laboratory course Measuring Techniques

FachhochschuleBonn-Rhein-Sieg

Safety Instruction FB 051

Welcome to the laboratory specificSafety-Instruction

for the laboratory course Measuring Techniques



Topics Contact persons, laboratory

personnel Requirements for the practical

course Workflow of the practical course Protocols Safety instructions



Contact persons, laboratory personel

Supervisors: Dr. F. Lorenz (FGAN, Email: [email protected]) Dr. M. Ulmke (FGAN, Email: [email protected]) R. Martin (FB 03, Email:

[email protected] ) Prof. Dr. U. Essmann (Rm. A 102)

Scientific assistants: A. Burghammer (Rm. A 244) D. Schütten (Rm. A 132)

Physics laboratory:

Room A 165



Requirements for the practical course

successful participation in the general as well as the laboratory specific safety instructions

prepare thoroughly for each experiment. Please be on time Liability insurance (Haftpflichtversicherung)



Workflow of the practical course

Each group has to do 4 experiments.

Inform yourself about:

your group the dates of the experiments you have to do get the description of the experiments in advance.

Instructions under:

http://fb05.fh-bonn-rhein-sieg.de/Download_Measuring_Techniques.html




The practical course begins and ends at the given times! Auxiliary dates only in exceptional cases! (e.g. due to

illness certificate necessary! ) The purpose,the aim, and the basics will be discussed at

the start of the experiment. Sufficient knowledge is a requirement for the participation in the lab course!

Repeated unprepared appearance to the lab course may lead to exclusion from the lab course!




• Prepare the measuring report in advance at home

• Never start with an experiment, before you received the introduction to the experiment

• The measuring report is attested (Vortestat), if the experiment is finished and your place is cleaned up. – This is not a guarantee that your data are correct! – You are responsible for your measurements!



Protocols• Observe the deadlines for the protocols: One

week after the practical course started, until 16:00 o'clock.

• Evaluation: 0 to 3 Points in steps of 0,5 P. One week after delivery you can look into the evaluated protocols.

• You can look at your protocols during one of the practical classes (Mon at 8:15 , or Tue at 11:45, or Wed at 11:45)

• Laboratory course is completed when four protocols are attested.



Protocols• Cover sheet• Task/Objective• Sketch of the experiment / parts list• Preparation, answers to the list of questions• measurement report • Evaluation (calculation, results, diagrams)• Discussion / error analysis

Detailed information about the preferred structure and content of the protocols can be found under:




Safety instructions•General

•Laboratory specific

•Protective clothing

•Handling glassware

•Handling electrical devices

•Handling Lasers

•Treatment of burns

•Proceeding in current accidents



General

Pay attention to the laboratory order. Don‘t eat, drink, smoke or use your cellular phone in

the laboratory Escape routes have to be kept free at all times. Know the locations and operating procedures of all

safety equipment including: first aid kit(s), fire extinguisher, emergency stop switch, emergency shower, eye bath, telephone, escape routes, fire blankets.

Report accidents immediately. Never start with an experiment, before you got the

introduction to the experiment. Please ask if there are questions during the experiment.



Special protective clothing is generally not necessary in physics/measuring technique laboratory. Nevertheless pay attention to appropriate clothes.

Protective clothing



Handling Glassware

Always use clean and intact glassware Clean the glassware after usage and return it to

its place Breakage of glass has to be announced Don‘t put broken glasses into the trash bin Some glassware may become very hot during the

experiment. > Don‘t burn yourself!



Handling of Electrical Devices Always use intact cables and devices Consult the laboratory personnel before

switching on any devices During all changes in the experimental

setup the current has to be switched off You should never pull on cables but always

on plugs Avoid open contacts Some electrical devices may become very

hot. > Don‘t burn yourself!



Handling of Lasers

Never look into the laser beam Don‘t introduce reflective material into the optical

path of the laser (Wristwatch, rings, bracelet,...) The setup has to be mounted in a stable position The optical way of the laser may not run at eye

level



Treatment of burns

cool with flowing water / with cold clothes inform laboratory personnel immediately


Safety Instruction FB 0517Instructions for

accidents with electrical current

Interrupt the circuit immediately Push Emergency Stop If the emergency stop of the circuit is not possible, don‘t pull the injured people with bare

hands! The victim might be energized.

Apnea > mouth-to-mouth breathing

Cardiac arrest >mouth-to-mouth breathing and chest compressions

emergency call no apnea / circulatory stop >recovery position

inform laboratory personnel immediately



Experiments in WS08/09

Electrical resistance/ Wheatstone bridge Parameters of alternating currents Optical Images and Optical Instruments Diffraction Grating Spectroscopy

Instruction of Experiments under:




Electrical resistance/ Wheatstone bridge

Task:Measurement of current and voltages in series and parallel circuits of resistorsMeasurement of the body temperature with a PT 100 and a Wheatstone bridge



Parameters of alternating currentsDevice: OscilloscopeTask:Determination of parameters of a sinoidal alternating current with an oscilloscopeCharacterization of the charging and discharging process of a capacitor Determination of the phase shift between voltage and current at a capacitor



Optical Images and Optical Instruments

Device: Optical benchTask:Determination of the focal length by repeated measurement of object and image distances

Assembly of a two stage magnification: Microscope



Diffraction Grating Spectroscopy

Task:Determination of the grating spacing with a He line spectrumIdentification of an unknown light source with the line spectrum



THE END!!!

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Fachhochschule Bonn-Rhein-SiegSafety Instruction FB 05 1 Welcome to the laboratory specific Safety-Instruction for the laboratory course Measuring Techniques