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Hazmat > Tru Pointe-IR > Flashcards

Tru Pointe-IR Flashcards

1
Q

What does this meter do?

A

Detects the presence of refrigerant gases. Leak detector. Is not a quantitative meter.

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2
Q

What kind go battery does it use and what is the battery life?

A

Lithium ion type 3.7v NP-120. 8 Hours continuous use before recharge

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3
Q

How long will the sensor last?

A

10 years

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4
Q

What causes it to automatically shut off?

A

10 minutes of inactivity

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5
Q

What is the operation temp?

A

32° F to 122° F

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6
Q

What does it mean if the low battery LED is illuminated?

A

Approx one hour of battery life remaining

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7
Q

How do you get into background mode?

A

Quickly press “peak” button 4 times while in high sensitivity mode

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8
Q

What does background mode do?

A
  • Pin points leaks (most sensitive operating mode)
  • instrument will trigger on extremely small refrigerant levels and sudden movements
  • This fourth sensitivity mode eliminates high backgrounds
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9
Q

How long does the warm up/calibration sequence take?

A

30 seconds

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10
Q

What is the default sensitivity level?

A

High

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11
Q

What sensitivity level should you use for a large leak?

A

Medium or low

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12
Q

Does this meter require calibration?

A

No, it auto adjusts to ambient conditions of an area that may have background refrigerant gases present

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13
Q

What types of refrigerant does this detect?

A

CFCs, HFCs, HCFC blends, and HFO-1234YF in HVAC/R applications

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14
Q

What is the sensitivity?

A

<0.1 oz/yr (3 g/yr)

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15
Q

What four operating modes does it have?

A
  • Low
  • Medium
  • High (default)
  • Background mode (most sensitive)
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16
Q

Is it ok to draw moisture through the probe?

A

No

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17
Q

What is the max temp a battery can be exposed to?

A

140 ° F

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18
Q

What type of detector is this?

A

Locating Leak Detector (Type C)

19
Q

how long does it take for the battery to recharge?

A

3 hours

20
Q

What is the response time, recovery time, and zeroing time?

A

< 1 sec
< 2 sec
< 2 sec

21
Q

What are the fixed probe (static) detection limits?

A

Upper- None (> 50 g/yr)
Lower- 0.5 g/yr (0.02 oz/yr)

22
Q

What are the moving probe (dynamic) limits?

A

Upper- None (> 50 g/yr)
Lower- 1.0 g/yr (0.04 oz/yr)

23
Q

What is the lower detection limit for contamination?

A

3.5 g/yr (0.12 oz/yr)

24
Q

What does it mean if the LOW-BATT LED is blinking?

A

The battery is charging

25
Q

What does it mean if the LOW-BATT LED is solid?

A

The battery is low

26
Q

How do you change the sensitivity mode?

A

Pressing the L/M/H button

27
Q

As a rule of thumb, how should the sensitivity be set?

A

The higher the background concentration of refrigerant in the air, the lower the sensitivity level should be set

28
Q

What does the peak function do?

A

Stores the highest change in refrigerant concentration achieved while continually detecting leaks

29
Q

What happens when you turn the Peak function on or off?

A
  • On: LED illuminates
  • Off: Peak information is cleared
30
Q

When background mode is on, what color will the LED be?

A

Left most bar will quickly flash green

31
Q

What colors do the LED bars display?

A

The eight LED bars display green, amber, and red

32
Q

How small of a leak can High sensitivity mode detect?

A

As low as 0.1 oz/yr (3 g/yr)

33
Q

When should you retest a leak?

A

When a leak is discovered using the most sensitive settings or if the probe was in a static position

34
Q

What noise will the meter make in background mode?

A

It will go from a tick to a steady tone

35
Q

How long is the probe and extension?

A

15” flexible probe
9” extension

36
Q

What should be used between the probe, the tip, and any extensions?

A

An O-ring

37
Q

Does the meter detect absolute concentration of refrigerant?

A

No, only changes in concentration levels

38
Q

How long can it take the meter to clear after detecting a small amount of refrigerant?

A

Up to 30 seconds but typically no more than 2-15 seconds.

39
Q

Where would you most likely detect a leak?

A
  • Soldered joints in refrigerant lines
  • Points with changes in cross sections
  • Points with changes in direction of lines
40
Q

What should you do with the probe when detecting a leak?

A

Slowly sweep back and forth no more than .25” from suspected leak areas (3in/sec)

41
Q

If a leak is found what should you do?

A

Continue to test the remainder of the refrigerant system

42
Q

Should you use commercially available canned air to clear an area of refrigerant build up?

A

No because it uses refrigerant too

43
Q

Where is the filter located?

A

The tip of the wand

44
Q

What happens if the filter gets wet?

A

It restricts the flow of air and must be replaced

Hazmat (18 decks)

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