Eagle 2 Flashcards
What does the Eagle 2 read?
O2, LEL, CO, H2S
What 3 modes can it operate in?
*Normal- Area monitoring
Bar hole- Searching for underground gas leaks
Leak check- Locating leaks in valves and piping
What batteries do we use and how many? How many operating hours?
4 C batteries will allow for 16 hours of battery life
Operating temperature range?
-20 degrees C to -50 degrees C
What percent of humidity can it operate in?
Below 85% humidity
What is Eagle 2 calibrated to?
Methane (CH4)
What technology is used for the O2 sensor and how does it work?
The O2 sensor is a galvanic sensor which allows gas to diffuse across a membrane in the sensor at rate proportional to the partial pressure of oxygen. O2 reacts in the sensor and produces a voltage proportional to the concentration of O2 which is measured and converted to a gas concentration and then displayed on the screen.
What technology is used for the LEL sensor and how does it work?
Catalytic combustible gas chamber. The reaction of gas with O2 on the catalyst changes the resistance of the element (gas) which changes the current flowing through it. The current is amplified and converted to a measurement of combustible gas concentration.
What technology is used for the H2S and CO sensor and how does it work?
Electrochemical sensors that contain precious metal electrodes in an electrolyte solution. Gas diffuses into the electrolyte solution and reacts to produce a current proportional to the concentration of target gas
Name the parts of the equipment
- 10” hydrophobic polyurethane probe with external particulate & H2O filter(1/8” internal diameter)
- Internal charcoal hydrophobic filter
- 5’ hose
- (5) 25’ hoses
What is the time to T90 with probe only?
12 seconds
Time to T90 with probe and each piece of tubing?
- 5’ hose: 15s
-25’ hose: 25s
-50’ hose: 35s
-75’ hose: 45s
-100’ hose: 60s
-125’ hose: 75s
What is the maximum recommended length of hose?
125ft because response time and accuracy declines
What is the maximum recommended length of hose for exhaust tubing?
20ft
Aside from high and low readings, when will the Eagle 2 alarm?
During a sensor failure, low flow, or dead battery
Low Alarms
ALRM1 next to gas reading, LED flash once per second, backlight turns on, 1 chirp
- O2: 19.5%
- LEL: 10% or 5,000ppm
- CO: 25ppm
- H2S: 5ppm
High Alarms
ALRM2 next to gas reading, LED flashes twice per second, backlight turns on, 2 chirps
- O2: 23.5%
- LEL: 50% or 25,000ppm
- CO: 50ppm
-H2S: 30ppm
STEL Alarms (15 mins)
- CO: 200ppm
-H2S: 5ppm
TWA Alarms (8 Hrs)
- CO: 25ppm
- H2S: 1ppm
Ranges
- O2: 0-40% (10% min needed to operate)
- LEL: 0-100%
- CO: 0-500ppm
- H2S: 0-100ppm
What does “OVER” mean?
Over range. LEL sensor will temporarily shut off if exposed to >100% LEL.
What does “Recharge Batt” mean?
Low battery, no chirp
What does “FAIL LOW FLOW” mean?
Low pump flow
What does “FAIL SENSOR(S)” mean?
Sensor needs to be replaced
What are the calibration gas values?
- CH4: 50%
- O2: 12%
- H2S: 25ppm
- CO: 50ppm
What is the minimum battery voltage it can run on?
4.3 Volts
How do you perform a demand zero?
Hold down the “AIR ^ YES” button until you are prompted to let go. Afterwards it will say “adjusting zero complete”
What three measurements can CH4 be displayed in? How do you cycle through them?
Vol%, PPM, and %LEL. Press the “RANGE ‘down arrow’ SHIFT” button until you see the desired measurement.
How do you cycle through the different displays?
Hit “DISPLAY/ ADJUST/ NO” button
How do you get to the calibration screen? What options do you have once screen is displayed?
Hold down the “DISPLAY/ ADJUST/ NO” and “SHIFT/NO” buttons at the same time.
- Auto Calibration
- Single Calibration
- Perform Air Adjust
- Normal Operation
How long does calibration take?
60s ***
How far can the pump draw?
Up to 125ft
