Meter Flashcards
What does the multi RAE meter look for?
- LEL 10%-20%
- Oxygen (O2) 19.5-23.5
- Hydrogen sulfide (H2S) 10ppm-15ppm
- Carbon monoxide (CO) 35ppm- 100ppm
- Volatile organic compounds (VOC) 50ppm-100ppm
Multi RAE
What contaminants may give you false reading, damage sensors, or damage meter?
Organic silicones
Silicates
- Lead containing compounds
What are VOCs and what is the highest ionization potential (IP) that the meter can detect?
Volatile organic compounds Dash modern industry industrial chemicals such as fuels, coatings, solvents, refrigerant etc. they have a tendency to evaporate easily under normal conditions making them volatile and they have a high flashpoint.
10.6 eV
How do you do a bump test on a multi RAE?
- Once you’re at your home screen press and hold the Y+ & N- keys at the same time the bump screen will appear. Apply the 4 gas and press start.
- Now bump the PID sensor. Apply gas press start
Multi RAE
What do we want to do prior to metering a hazardous area?
Block pump inlet to make certain pump is working. Press reset
Bump test. If it fails bump test then calibrate.
Confirm measurement gas (conversion factor) is set appropriately
How does the multi RAE read VOC’s?
There are three different PID sensors That can be used. One reads ppm, and reads 0.1 to 5000 ppm, and another that reads 1 to 1000 ppm, third one that reads parts per billion 10 PPB - 2000 ppm
What gas do we calibrate LEL, 02, CO, and H2S on? What gas do we calibrate VOC’s on?
Multigas- methane, oxygen, carbon monoxide, hydrogen sulfide
Isobutylene
How do we calibrate Multie RAE?
- Must be in fresh air to perform
- home screen press “O” button and “N-“ at same time.
- Next screen will have six icons
- Select upper left icon that looks like calibration bottle
- Scroll down to “multi sensor span” & select
- Attach 4 gas and select start
- Once done you will see pass or fail the meter will go into PID calibration
- Apply Isobutylene press start
- Once complete select back button to go to the home page
When using multi RAE to meter for combustible liquids with flashpoint above 100°F what area of the meter should be watched?
VOC’s High carbon molecule products may give erroneous low readings in the LEL area
Multi RAE
What are the alarm levels?
10% LEL 02 19.5% and above 23.5% 35 ppm CO 10 ppm H2S 100ppm VOC
Toxi RAE
What three Gases Are supplied for this meter?
(NH4)Ammonia
(Cl2) Chlorine
(HCN) Hydrogen cyanide
Toxi RAE What does (max) indication code mean?
Gas exceeds electronics maximum range
Toxi RAE What does (over) indication code mean?
Gas exceeds measurement range
Toxi RAE What does (HIGH) indication code mean?
Gas exceeds hiGh Alarm limit
Toxi RAE What does (Low) indication code mean?
Gas exceeds lower alarm limit
Toxi RAE What does (STEL) indication code mean?
Gas exceeds STEL limit
Toxi RAE What does (TWA) indication code mean?
Gas exceeds TWA limit
Toxi RAE What does (CAL) indication code mean?
Calibration failed, or needs calibration
Toxi RAE What does (BAT) indication code mean?
Low battery
Name five sensors that can be used on TOXI RAE meter
ACDC
Ammonia Chlorine Nitrogen Dioxide Sulfur Dioxide Hydrogen Cyanide
What does the gas ranger look for?
Methane
What is 5% gas
50,000ppm
Gas ranger
When you were in % LEL when does it alarm?
10% LEL
Gas Ranger
When you are in %Gas When does the meter alarm?
5% Gas
How do you reset a gas Ranger?
Place ranger in auto zero hold reset, turn to % gas And hold for 3-5 seconds , Move back to auto zero
What does hazmat Cad plus look for?
Toxic industrial chemicals
Chemical warfare agents
Hydride gas
Halogen gas
Phosgene gas
Hydrogen cyanide
7 agent codes
G, H, Tox, BLoD, CHOK, HYdR, HALO
Haz Cad plus
What is the difference in the modes on the Haz CAD plus?
Fast mode (FS)20 seconds analysis time.
High sensitivity (HS) 120 second analysis time
HS Detects concentrations levels six times lower than fast mode
Hazmat Cad plus
What are the three positions in the purposes on the simple inlet?
Open - stimulant testing
Closed- for storage
Dust Filter- Impedes particles and water from entering inlet this position should be used for field sampling
Hazmat Cad plus
What does “alarm” mean?
Red blinking light indicates a threat vapor has been detected
Hazmat Cad plus
What does “all clear” mean?
Green steady light no vapor threat present
Hazmat Cad plus
What does “low Bat” mean?
Yellow light indicates power is running low
Hazmat Cad plus
What does “Sys OK” mean?
Green blinking light indicates proper electrical operations of instrument
Hazmat Cad plus
What are “G” agents?
“G” Nerve Agents
GA- Tabun
GB- Sarin
GD- Soman
GF- no common name
Hazmat Cad plus
What are “H” agents?
H are Blister agents
Mustard gases
L- Lewisite
How long does the Hazmat CAD plus need to run for warm up to give you an accurate reading?
15mins
Which of the instruments measures the amount of flammable vapors and gases in the atmosphere?
Pg. 260
Combustible gas indicator (CGI)
- Multi Rae
- 5 star
To test for corrosivity, A technician would most likely use what?
Pg 260
pH paper
Relative response refers to an instruments response to a reading relative to its _________.
Pg 268
Calibration gas
At what level oxygen concentration is the atmosphere considered oxygen deficient?
19.5
What Instruments consist of a glass tube connected to a piston or bellows type pump?
Pg. 279
Colorimetric tube
An ultraviolet light source such as a UV lamp would most likely be used for which type of monitoring device?
Pg. 286
Photo-ionization detector
If you are monitoring a gas with an LEL of 2% and your combustible gas indicator reads 50% LEL, what is the actual percentage of gas in the atmosphere?
Pg. 268
1%
A CGI May not give reliable results if the oxygen concentration is below what percentage?
Pg 275
10%
A 1% Drop in oxygen level indicates that ________ppm of some other product has taken place in the atmosphere.
Pg 275
50,000
What is the most common energy lamp PID used in the hazmat response multi RAE
10.6 eV
Surface acoustic wave (SAW) sensors, are beneficial for the detection of what?
Pg 294
Nerve and blister agents
What color does PH paper turn when it’s acidic and what color does it turn when it’s base?
Red acid
Blue Base
the ________ is the interval between the time an instrument senses a chemical containment and when it produces data.
Pg 266
Instrument response time
What meter would you use for
Sarin
Hazmat Cad plus
What meter would you use for
Chlorine
Toxie Rae
Hazmat Cad
What meter would you use for
Phosgene
Hazmat Cad plus
What meter would you use for
Mercury
Jerome
What meter would you use for
Blood Agents
Hazmat Cad plus
What meter would you use for
Methane
Gas Ranger
What meter would you use for
Volatile Organic Compound
Multie RAE
What meter would you use for
Oxygen
Multie RAE
What meter would you use for
Nerve Agents
Hazmat Cad plus
What meter would you use for
Carbon Monoxide
Multie Rae
What meter would you use for
Hydrogen Sulfide
Multi Rae
Hazmat Cad plus
What meter would you use for
Sulfur Dioxide
Toxi Rae
What meter would you use for
Mustard
Hazmat Cad plus
What meter would you use for
Hydrogen cyanide
Toxi Rae
Hazmat Cad plus
What meter would you use for
Ammonia
Multie Rae
Toxi Rae
What meter would you use for
Fluorine
Hazmat Cad plus
What does the Eberlein look for?
Gamma and X-Ray with blue sausage
Alpha and beta with probe
Eberline
What is the reading angles of the blue sausage (Scintillator)
90ft at a 75 degree cone at scintillator
What does the green light indicate on the Eberline?
Normal function
What does the identifinder look for?
Gamma and Neutron radiation
Identifies Radiation source
At what rating is a hot zone established with the Eberline?
2mR
Define Eberline readings
uR
mR
R
uR - Micro Rem
mR- Milli Rem
R - Rem
What does the Jerome meter look for?
Mecury
What is considered a contaminated reading of a person or area with mercury?
.03 mg/mm3
Jerome meter
What does LOBAT mean?
Battery needs to be recharged?
Jerome meter
What does EEE mean?
Battery to Low to function-meter will shit off
Jerome meter
What does PPP mean?
Power Cord required
Jerome meter
What does LLL mean?
Monitor needs to be Re-zero
Jerome meter
What does 888 meter mean?
Meter needs to be regenerated
Jerome meter
What does HL mean?
Sample detected exceeds maximum ranger of meter of .999 mg/m³ Hg
