Directory
QCM Home
CQCMs
MK16, 17,
18, 19
TQCMs
MK10
MK20
MK24
Passive QCM
MK21
Controllers
Model
2000
Model
3000
FEU
(Flight Unit)
Test System
VODKA
Information
Documents
Links
Software
FAQ
International
Reps
|
Mark
20 TQCMTM
Sensor
|
 |
We have big news for all of you MK10
fans out there. The QCM Research MK20
TQCM is now available! We think that you
will agree that the MK20 is quite an
improvement on the old industry standard,
our MK10. The new unit is quite small; it
weighs in at just 20 grams, compared to
120 grams for the MK10. We have done this
by using both the advanced crystal pack
design now found in our cryogenic QCMs,
coupled with smaller and more efficient
peltier heat exchangers. Because of the
wide variety of peltiers now available
and because of recent advances in crystal
technology, we can offer the MK20 in a
variety of frequencies and temperature
ranges to meet the needs of many
differing applications. This combination
brings a very small and highly efficient
TQCM sensor to add to your mass flux
measurement toolkit.
TQCMs have been around since the late
1970s, with the still highly popular MK10
appearing in about 1983 and with only
minor revisions to it since that time. It
is widely used around the world, in
applications as varied as closely
tracking dew points for improved
manufacturing yield, conducting extremely
long duration outgassing experiments,
monitoring organics in cleanrooms and
monitoring contamination on space
platforms.
MARK 20 MODELS
| Model No. |
Part No. |
Frequency
Capability |
Active
Temperature Range
(Heat Sink at 20°C)
|
Power
Requirement |
| MK 20-1 |
96-2026-01
|
3 to 15
MHz |
-60 to
80°C |
6.25 W |
| MK 20-2 |
96-2026-02
|
15 to 25
MHz |
-60 to
80°C |
6.25 W |
| MK 20-3 |
96-2026-03
|
3 to 15
MHz |
-38 to
80°C |
3.2 W |
| MK 20-4 |
96-2026-04
|
15 to 25
MHz |
-80 to
80°C |
4.4 W |
| Specifications |
| Crystal
Frequency |
Mass
Sensitivity
(Hz/gm/cm2) |
Dynamic
Range
(gm) |
3 MHz
10 MHz
15 MHz |
2.04 x 107
2.26 x 108
5.09 x 108 |
4.66 x 10-4
1.40 x 10-4
9.33 x 10-5 |
| Dimensions |
cm |
inches |
Mark 20-1
Mark 20-2
Mark 20-3
Mark 20-4 |
1.575 x
2.700
1.575 x 2.700
1.433 x 2.700
1.800 x 2.700 |
0.620 x
1.065
0.620 x 1.065
0.564 x 1.065
0.707 x 1.065 |
| Supply
Voltage |
8 to 12
VDC (10 VDC Nominal) |
| Power |
~120 mW @
10 VDC |
| Signal
Amplitude |
>6 to
10 Vp-p |
| Voltage
Sensitivity |
<23
Hz/V |
| Output
Impedance |
12K OHMS |
| Temperature
Range |
-199 to
100°C - Passive Mode
-80 to 100°C - Active Mode |
| Weight |
23 gm
(Excluding Cable)
55 gm (Including Cable) |
|
QCM Research
42232 Rio Nedo, Suite A
Temecula, California 92590
Phone: 951.694.9539
FAX: 951.694.9538
E-Mail: information@qcmresearch.com
|
