BRONKHORST®
Page 6
EL-FLOW
Base
Series Mass Flow Controllers
9.17.061
1.5 Warranty
The products of Bronkhorst® are warranted against defects in material and workmanship for a period of
three years from the date of shipment, provided they are used in accordance with the ordering
specifications and the instructions in this manual and that they are not subjected to abuse, physical
damage or contamination.
Products that do not operate properly during this period may be repaired or replaced at no charge.
Repairs are normally warranted for one year or the balance of the original warranty, whichever is the
longer.
See also paragraph 9 of the Conditions of sales.
The warranty includes all initial and latent defects, random failures, and undeterminable internal causes.
It excludes failures and damage caused by the customer, such as contamination, improper electrical
hook-up, physical shock etc.
Re-conditioning of products primarily returned for warranty service that is partly or wholly judged non-
warranty may be charged for.
Bronkhorst High-Tech B.V. prepays outgoing freight charges when any party of the service is performed
under warranty, unless otherwise agreed upon beforehand, however, if the product has been returned
collect to Bronkhorst High-Tech B.V., these costs are added to the repair invoice. Import and/or export
charges, foreign shipping methods/carriers are paid for by the customer.
1.6 Product Description
1.6.1 General Description
An EL-FLOW
Base
mass flow controller consists of a thermal mass flow sensor, a laminar flow element
which acts as a bypass, a solenoid proportional control valve and a digital electronic PC-board for PID-
control and communication.
PC-Board
Mass Flow
Sensor
Laminar Flow
Element
9pin SubD
Connector
Control Valve
Body
There are three different basic models for different flow rates (F-201CB, F-201AB and F-202BB).
Within each model there is variation in laminar flow element size, orifice size and sealing material. These
variables are optimized for the customer’s gas and process conditions.
