Watlow RF Style Data sheet
W A T L O W
99
RTDs and Thermistors
RTDs and
Thermistors
Resistance
Temperature Sensing
RTDs
Watlow’s platinum resistance
elements are specially designed to
ensure precise and repeatable
temperature versus resistance
characteristics. The sensors are
made with controlled purity platinum,
have high purity ceramic components
and constructed in a unique strainfree manner.
Performance Capabilities
• Ceramic elements are extremely
precise and stable within the wide
temperature range of -200 to 650°C
(-328 to1200°F).
Features and Benefits
Patented, strain-free construction
• Provides dependable, accurate
readings
• Allows elements from different lots
to be substituted without
recalibration
High signal-to-noise output
• Increases accuracy of data
transmission
• Permits greater distances between
sensor and measuring equipment
Temperature coefficient (alpha)
carefully controlled while
insulation resistance values
exceed DIN-IEC-751 standards
• Ensures sensor sensitivity
• Minimizes self heating
• Allows precise measurement
• Repeatable
Highly controlled manufacturing
process
• Ensures wide temperature range
• Stabilizes physical and chemical
attributes
Metric diameters and fittings are
available, please consult factory
Applications
• Air conditioning and refrigeration
servicing
• Furnace servicing
• Stoves and grills
• Textile production
• Plastics processing
• Petrochemical processing
• Micro electronics
• Air, gas and liquid temperature
measurement
• Exhaust gas temperature
measurement
102
RTDs and
Thermistors
RTD Style RF
Metal Transitions
L
E
1-2. Style
F = Metal transition with strain relief
3. Sheath O.D. (inch)
G = 0.125
H = 0.188
J = 0.250
4. Lead Wire Construction
Standard Overbraid Flex Armor
Fiberglass Stranded A JR
PFA or TFE Stranded B LT
5. Fittings
If required, enter order code from pages 39 to 40.
If none, enter “0”.
6. Lead Wire Termination
A
b
= Standard male plug
B
b
= Standard female plug
C
b
= Standard plug with mating connector
J
b
= Male miniature plug
K
b
= Female miniature jack
L
b
= Male/female mini set
T = Standard leads
U = Leads with spade lugs
7. Sheath Construction
316 SS Alloy 600
Mineral Insulated K L
8-9. Sheath Length “L” (inch)
03, 06 and 12
Whole inches: 03 to 99
Metric lengths and lengths over 99 inches consult factory.
10. Sheath Length (fractional inch)
0 = No fraction, whole inches
1=
1
⁄8 3=3⁄8 5=5⁄8 7=7⁄8
2=1⁄4 4=1⁄2 6=3⁄4
11. Element
2-wire 3-wire
100Ω Single A B
12. Temperature Coefficient
DIN 0.00385
A = Class A
B = Class B
13-14. Lead Wire Length “E” (foot)
02 and 04
Whole feet: 01 to 99
15. Special Requirements
0 = None
X = Special requirements, consult factory
R
123456789101112131415
F
b
Requires two- or three-wire only, single
element only
Features and Benefits
Stainless steel transitions
• Crimped to sheath and filled with
260°C (500°F) epoxy
• Optional brazing available
Coiled spring strain relief
• Protects lead wire against sharp
bends in the transition area
Flexible mineral insulated
construction
• Provides a bendable and highly
durable sensor
Temperature rating
• -200 to 650°C (-328 to 1200°F)
High accuracy
• Dependable readings
Diameters available
• 0.125 to 0.250 inch O.D.
Custom Ordering Information—Items in Bolded Green Type are preferred
with shorter lead times.
Rapid Ship sensors come with 100Ω DIN 0.00385 curve, 316 stainless steel, 0.188 inch diameter,
24 AWG stranded Teflon
®
three-wire, four foot leads, temperature rating -200 to 650°C
(-328 to 1200°F), standard split end lead termination and no mounting fittings. See page
166 to order additional connector hardware.
Rapid Ship Sensors
Sheath
Class Length Part Number
Accuracy in. (mm) 4 foot (102 mm) Leads
3 (76) RFHB0TK030BA040
A
6 (152) RFHB0TK060BA040
9 (229) RFHB0TK090BA040
12 (305) RFHB0TK120BA040
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