Beabout 1

Question 1

What is the measuring principal that the 640i uses?

Answer 1

Thermal Mass Flow

Question 2

What is unique about the Sierra Quadratherm detector?

Answer 2

Lifetime DrySense, no drift technology, lifetime warranty on the sensor

Question 3

What application is the 640i best suited for?

Answer 3

Flare gas applications, specifically no flow (it is good for all flow ranges)

Question 4

What EPA Standard does the 640i meet?

Answer 4

40 CFR 63

Question 5

What is the maximum flowrate of the 640i?

Answer 5

60000 SFPM, 100:1 turn down

Question 6

How many gases can be measured with a standard 640i

Answer 6

4 (AIR must be one)

Question 7

Can you measure gas blends with more than 4 gases (640i)

Answer 7

Yes, with Q-mix

Question 8

Can you create and upload customer gas mixtures on the 640i?

Answer 8

Yes, with Q-mix

Question 9

Can you accurately measure streams with varying compositions with the 640i

Answer 9

Yes, with Real Time Q-mix and input from a gas chromatograph

Question 10

Can you accurately measure streams with varying compositions with the 640i

Answer 10

Yes, with Real Time Q-mix and input from a gas chromatograph

Question 11

Can you field validate sensor calibration with the 640i

Answer 11

Yes, with ValidCal software app

Question 12

What is the difference between the 640i and 780i

Answer 12

640i is an insertion sensor, the 780i is an inline meter

Question 13

What line size can be measured with 640i?

Answer 13

2” and greater

Question 14

What is the maximum temperature of the 640?

Answer 14

392F, the 640s can measure to 750F

Question 15

What is the maximum pressure 640i?

Answer 15

500 psia

Question 16

What is the accuracy of the 640i meter?

Answer 16

.75% of reading