| molbloc/molbox™ system |
 |
G A S F L O W S T A N D A R D S
molbloc/molbox™ system for high accuracy, low gas flow calibration and measurement.
|
|
| molbloc flow elements [molbloc-L] [molbloc-S] [range selection tool] |
| molbloc-L® |
Laminar Flow Elements for Flow
from 1 sccm to 100 slm
• molblocs are used with molbox mass flow
terminals
• molbloc/molbox has been assigned NSN
6680-01-466-2062
|
molbloc-L
|
|
| molbloc-S® |
|
Sonic Nozzle Based Elements for Flow
up to 5 000 slm
• Extend molbloc/molbox flow range up to
5 000 slm with sonic nozzle based molblocs
that can be used with existing molbox1 and
molbox RFM |
molbloc-S |
|
|
| molbloc range selection tool |
An Excel™ spreadsheet to help you to compare the uncertainty (accuracy) of your Device Under Test (DUT) and the various molbloc/molbox combinations that DHI offers. |
It determines the molbloc's uncertainty when used with each type of molbox, and compares it to that of the DUT. The spreadsheet handles the "compound" uncertainties such as %FS
+ %Reading, given by many MFC manufacturers. |
Range information for all three molbloc calibration types and all of the molbox supported gases are also provided. You can change the molbloc choice at any time and the error and uncertainty ratio data in the tables and on the charts is recalculated and displayed.
FREE DOWNLOAD > >  molselec.zip (848 kb)
Warning - DHI has made sincere efforts to ensure the accuracy and quality of this tool. However, no warranty, expressed or implied is provided. DHI disclaims any responsibility or liability for any direct or indirect damage resulting from the use of this software product. |
|
| molbox flow terminals [molbox1] [molbox RFM] |
| molbox1™ |
Flow Terminal
The heart of the molbloc/molbox system.
• Performs data acquisition and processing
functions necessary to determine the flow through
a molbloc flow element that is connected to it
• Flow measurement uncertainty of ± 0.2 %
of reading
• Very high performance, quartz crystal oscillator
based, pressure transducers
• Two molbloc channels allowing two molbocs
to be connected simultaneously and
measurements to be switched between them
• Integrated analog MFC measurement and control
option with switchbox for multiple channels
• Valve driver option (8 switchable 12V outputs).
• molbloc/molbox has been assigned
NSN 6680-01-466-2062 |
(shown w/molbloc-S)
|
|
|
molbox RFM™ |
Reference Flow Monitor
Choose molbox RFM if you do not need molbox to set and read analog MFCs
• With microrange™ option, number of molblocs
needed to cover your range is minimized
• Flow measurement uncertainty of
± 0.5 % of reading
• Microrange option to reduces measurement
uncertainty under 10 % of molbloc full scale
• Micromachined silicon, piezoresistive pressure
transducers
• Very compact. presentation
• Lower cost than molbox1 |
(shown w/molbloc-L) |
|
|
|
| accessories [MFC-CB] [MFC Switchbox] [molstics] |
| MFC-CB™ |
Control Box for MFCs and MFMs
A compact and versatile, stand alone unit for setting and reading analog mass flow controllers (MFC) and mass flow meters (MFM).
• Set and read 0 to 5 V or 4 to 20 mA on
two (2) channels simultaneously
• Complete front panel local control and
remote operation via RS232 and
IEEE-488 interfaces
• Includes advanced features such as
two (2) channel sum, difference and ratio
• Displays in V, mA, % FS and flow units
• Handles gas conversion (K) factors automatically
• Switch each channel between five (5) channels
using an MFC Switchbox™
• Common look, feel and protocol with other DHI
molbloc/molbox™ flow products
• Compatible with COMPASS® for molbox™
software to set up automated molbloc/molbox
based flow systems
|
|
|
|
| MFC Switchbox™ |
For molbox™ MFC Control
An accessory to molbox1 designed to enhance molbox1 use in calibrating and testing MFCs and MFM
Supplies power and switches between up to 5 MFCs or MFMs simultaneously. |
|
|
|
| molstics™ |
molstic-L™
Mounting Systems for molbloc™ Flow Elements
Single & Dual molstics
• 2 basic models available
- Single for lo, mid & hi ranges
- Dual for lo & mid ranges
• Provides an engineered solution to practical
issues of mounting the molboc, connecting a
gas supply, regulating the pressure and
connecting the DUT |
|
|
molstic-S™
Mounting Systems for molbloc-S® Flow Elements
Single & Dual molstic-S's
• 2 basic models available
- Single for lo, mid & hi ranges
- Dual for lo & mid ranges
• Provides an engineered solution to the practical
issues of mounting molbloc-S® mass flow
elements, connecting a gas supply, regulating
the operating pressure and connecting the
device under test (DUT).
• A filter is included on the 1/4 in. molstic-S to
protect the smaller molbloc-S elements
from contamination.
• Highest quality components are integrated into
a convenient, compact, modular assembly to
assure optimum molbloc®/molbox™
performance.
|
|
|
|
| GFS™ dynamic gravimetric mass flow system |
GFS™ delivers a true Primary Mass Flow Standard and makes the fundamental measurement of low gas mass flow rates practical.
• Primary gravimetric principle:
measures mass and time directly.
• Covers the range of 0.2 to 200 mg/s in various
gases (10 sccm to 10 slm N2).
• Extend range to higher flows with sonic nozzle
based successive addition system.
• ± 0.05% of flow rate measurement uncertainty.
• Maximum outlet pressure of 650 kPa absolute.
• Controlled by GFS Tools software supporting
unattended, fully automated operation.
|
|
|
|
|
