Specifications

1. INTRODUCTION
Page 5 © 1998-2007 DH Instruments, a Fluke Company
The molbloc-L pressure dependent calibration types are summarized in Table 1.
Table 1. molbloc-L Pressure Dependent Calibration Types
NOMINAL DIFFERENTIAL
PRESSURE AT MAX. FLOW CALIBRATION TYPE OPERATING PRESSURE
1E5
MOLBLOC
ALL OTHER
MOLBLOCS
Full mod,
low pressure
200 to 325 kPa absolute
(29 to 48 psia)
upstream of molbloc
5 kPa
(.725 psi)
50 kPa
(7.5 psi)
Full mod,
high pressure
325 to 525 kPa absolute
(48 to 76 psia)
upstream of molbloc
Not available 50 kPa
(7.5 psi)
Downstream
Atmospheric pressure (95 to
105 kPa, 13.8 to 15.2 psia)
downstream of molbloc
12.5 kPa
(1.8 psi)
80 kPa
(12 psi)
Single P,
low pressure
(non-N2 gases only)
Any specified single molbloc
upstream pressure between
200 and 325 kPa absolute (29
to 48 psia)
5 kPa
(.725 psi)
50 kPa
(7.5 psi)
Single P,
high pressure
(non-N2 gases only)
Any specified single molbloc
upstream pressure between
325 and 525 kPa absolute (48
to 76 psia)
Not available 50 kPa
(7.5 psi)
Differential pressure values are nominal and may vary by up to 15 % with the
actual molbloc used.