Teledyne HASTINGS 200 Series, Instruction Manual, Page: 11 / 28

126B - PAGE 11
The HFM-230 uses a shunt which is a corrugated and fused shunt similar to the shunt used in the
lower flow range instruments (see Figure 3.7). This highest range shunt is adjustable from 0- 50 slpm
to 0-500 slpm.
The HFM-229B Series uses an external laminar flow element instead of an internal shunt, because the
necessary size for the element exceeds the body size of the flowmeter. This laminar flow element is
made of a corrugated and fused stainless steel ribbon similar to the one used in the
Model HFM-230.
Fig.3.7 Fig.3.7 Fig.3.7 Fig.3.7 Fig.3.7