Meriam Laminar Flow Elements User Manual
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When you decide to have your LFE cleaned, please be aware of the various capabilities of calibrating
LFE’s at Meriam. Every calibration includes: 6-8 calibration points [differential pressure 1”-8”H2O], a data
sheet with raw and reduced data, calibration curve, and instruction manual. The procedure numbers are
noted in (parentheses).
Calibrations
NIST Traceable Certificate Accuracy
(% Reading)
( )
Clean per (A33555) and calibrate per (A35822) Working-Master
X
±0.72% R
( )
Clean per (A33555) and calibrate per (A35822) Master-Master
X
±0.54% R
( )
As Received calibration (A35822/A34777), clean, and calibrate [WM] X
±0.72% R
( )
As Received calibration (A35822/A34777), clean, and calibrate [MM] X
±0.54% R
( )
Accredited calibration ISO/IEC 17025 (contact Sales for details)
X
±0.64% R
( )
Nuclear or safety application (A33544)
X
±0.72% R
( )
Subcontracted per (A35352)
X
±0.50% R
Options
( )
2 additional calibration points beyond full scale- up to 12”H2O
( )
Additional calibration points beyond full scale at the following settings _____________________.
( )
Additional calibration points below 1”H2O at the following settings _______________________.
( )
Oxygen cleaning per (A50558)
( )
Calibrating the LFE with differential pressure transmitter
( )
Hydrostatic leak testing per (A33559)
( )
Pneumatic pressure test per (A70763)
The standard reference unit for flow rate is (cfm) cubic feet per minute. The additional units available are:
( )
Liters
( )
Cubic Centimeters
( )
Meters
( )
Pounds (include flowing temperature and pressure)
( )
Kilograms (include flowing temperature and pressure)
( )
Other _____________________
Time constants:
( )
Second
( )
Minute
( )
Hour
The standard reference for differential pressure is inches of water at 4°C. The additional units available are:
( )
Millimeters of water @ 4°C
( )
Centimeters of water @ 4°C
( )
Pascals
( )
Kilopascals
( )
Other _____________________
A second data sheet and calibration curve using the listed units will be included with the calibration