M5-CYG2P-M-01_Iss6.doc
Cygnus 2+ Operating Manual
21
Measuring Higher Temperatures
The polyurethane membranes fitted to the single element probes
are suitable for measuring surface temperatures up to 70°C
(160°F). For measuring higher temperatures Teflon membranes
are available and suitable for surface temperatures up to 150°C
(300°F) with intermittent contact. Contact Cygnus instruments to
order Teflon membranes.
When measuring high temperatures limit the time the probe is in
contact with the hot surface to less than 4 seconds and ensure the
probe has sufficient time between measurements to cool down.
Summary of Cygnus Probes
Twin Element probes
Probe
Type
Size Frequency
Range in
Steel
(SE Mode)
Typical Uses
T2C
12mm
2 MHz
2.5 to 250
mm
0.1 to 10”
Attenuative materials
Cast irons, plastics
T5B
8mm
5 MHz
1.5 to 200
mm
0.06 to 8”
General purpose
Most metals
T7A
5mm
7.5 MHz
0.8 to 50 mm
0.03 to 2”
Thin metals
Single Element probes
Probe
Type
Size Frequency
Range in
Steel
Typical Uses
S2C
13mm 2.25 MHz
3 to 250 mm General purpose probe suitable
for most applications that can
use Multiple Echo
measurement.
Coated metals
S2D
19mm
0.75”
2.25 MHz
3 to 250 mm
0.12 to 10”
As S2C but has longer focal
point (33 mm) and narrower
beam so may perform better
on thicker materials
