NTC Hydroguard
™
Moisture-Resistant Thermistors
High moisture environments are a primary cause
An inexpensive, highly reliable moisture resistant
of sensor failure. Now, QTI™ solves the problem
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innovative moisture-resistant technology.
uality Thermistor’s NTC Hydroguard™ thermistor
probes are the solution for temperature sensing in
high-moisture environments. Hydroguard probes are
unequaled in quality and performance and can be used in a
wide variety of applications between the temperatures of
–40°C to +100°C. Although the values listed are standard,
our Hydroguard thermistors and probes can be manufactured
using a number of different resistance and curve
combinations to fit your specific application.
Engineering Information
Operating Temperature Range:
Dissipation Constant:
Thermal Time Constant:
Power Rating:
–40C to +100C
2mw/°C typ
depends on mounting
1/8 watt max
Q
Ordering Information
QTHGRL-14J-6
Lead Length in Inches
(Standard are 6", 12", 18")
RESISTANCE @ 25°C
2,252
5,000
10,000
10,000
30,000
PART NUMBER
QTHGXX-7
-11
-14
-82
-89
R-T CURVE*
Z
Z
Z
S
M
* See pages 25-27 for R-T detail.
Tolerance:
Omit
J
G
F
= 10%
= 5%
= 2%
= 1%
D3 = +/-
C3 = +/-
B3 = +/-
A3 = +/-
.1ºC (0ºC–70ºC)
.2ºC (0ºC–70ºC)
.5ºC (0ºC–70ºC)
1ºC (0ºC–70ºC)
Technology Comparison Chart
Moisture
Resistance
(100 % RH)
Hydroguard™
Vinyl Cap
Copper Sheath
Multi Layer Coating Systems
Molded Glass Diode Assemblies
Excellent
Poor
Poor
Fair
Fair
Corrosion
Resistance
(Saltwater)
Excellent
Good
Poor
Good
Good
Thermal
Cycling
Efficiency
Excellent
Fair
Fair
Poor
Poor
Precision
Interchangeable
Available?
Yes
Yes
Yes
Yes
No
Durability
Excellent
Fair
Fair
Fair
Poor
800-554-4784
www.thermistor.com
5
F E A T U R E D
P R O D U C T
Tolerance Code (from below)
Dash Number (from table)
Probe Style