Unit 2h: Ion Mobility Spectroscopy

Question 1

What does the Ion-Mobility Spectroscopy do?

Answer 1

Separates and identifies ionized molecules in the gas phase based on their MOBILITY in a buffer gas

Question 2

TRUE or FALSE:

Answer 2

The process of IMS is sensative and works within seconds

Question 3

True or False

Answer 3

The IMS is battery operated

Question 4

PPE can be trapped or pinched when operating various components of the JCAD. Make sure that PPE is NOT ____ during operating or maintenance:

Answer 4

Torn

Question 5

The detector of IMS gives at least ___ at ___ meters:

Answer 5

a. 100 db(a); 85 m
b. 49 db(a); 200 m
c. 85 db(a); 1 m
d. 2 db(a); 85 m

Question 6

A lightweight, portable battery operated point sampling detector that samples the air for chemical vapors is known as a

Answer 6

JCAD M4A1

Question 7

The JCAD ___ and ___ CWAs and ___ ___ and issues ___ and ___ alarms in the event of detection

Answer 7

detects; identifies; TIC; vapors; visual; audible

Question 8

The visual display of a JCAD displays the:

Answer 8

type of CWA or TIC detected

Question 9

The JCAD detects and identifies CWAs and TIC vapors by drawing outside air ___ the detector

Answer 9

into

Question 10

What does the microprocessor do in a JCAD?

Question 11

Advantages of a JCAD:

Answer 11

1. Can detect in monitor (5 sec), survey (1 sec), and TIC mode
2. Operating in temperatures ranging from -26 degrees F to 120 degrees F
3. Can operate up to 15, 000 ft above sea level
4. Lightweight (0.82 lbs) and portable (easy to take down range)

Question 12

Disadvantages of the the JCAD

Answer 12

1. Environments with higher-than-normal humidity (or temps below freezing) JCAD valves could freeze and halt function
2. False positives
3. Not qualified on anything but chlorine
4. NO memory
5. Become saturated in humid environments

Question 13

What are the components of the JCAD?

Question 14

The status icon area (1) displays…

Answer 14

icons that indicate the detector’ current operating status

Question 15

The mode area displays…

Answer 15

either survey or monitor depending on the selected detection mode, or check if a confidence check is in progress

Question 16

The status display area displays…

Answer 16

detector status and detection information such as:

• sampling
• wait
• major fault
• fault
• detection info

Question 18

The system message line (4) displays…

Answer 18

system generated messages and information such as:
- battery low
- clearing down
- change sieve pack