Model 773
Bolt-On Sensor
• Accurate measurement of surface temperatures.
• Compact sensing block designed for fast time response,
may be installed by bolting, clamping or cementing to the
surface.
• Ideal for remote sensing when used in conjunction with the
Weed Instrument Sensor-Mate® Temperature Transmitter.
Data Sheet
1/4”
“X”
Leadwire Length
18” is Standard
“X” + 6”
Lead Wire Length
1.25”
.25”
.220”
Epoxy Seal
Teflon
Insulated
Cable
10-32 UNF
Brass Housing
Specifications:
Element Type: Code
PB
PC
TM
Max. Operating Temperature:
RTD Sensor
RTD Transmitter
Thermistor
148ºC (300ºF)
121ºC (150ºF)
65ºC (250ºF)
Sensor Lead Wire:
RTD
Thermistor
Three 24 AWG Teflon insulated
Two 20 AWG cross linked polyolefin insulated
Insulation Resistance:
Stability:
Minimum 100 megohms @ 100 VDC @ 21ºC (70ºF)
RTD
Typically, 0.26ºC (0.47ºF) in 5 years
Themistor
Typically, 1ºC (1.8ºF) in 5 years
Accuracy:
±0.3ºC (±0.56ºF ) @ 0ºC (32ºF)
±0.2ºC from 0º to 87ºC (± 0.36 ºF, from 32 ºF to 158ºF)
Add 0.1% of span (RTD only)
RTD
Thermistor
With Transmitter
Platinum RTD, 100 ohms @ 0ºC (32ºF), 0.00385 TCR (DinB)
Platinum RTD, 1,000 ohms @ 0ºC (32ºF), 0.00385 TCR (DinB)
Thermistor, 10,000 ohms @ 25ºC (77ºF)
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.75”
Ordering Information
Code
773-PB
773-PC
773-TM
Bolt-On Sensor
RTD, 100 ohms @ 0ºC (32ºF) (DIN B)
RTD, 1000 ohms @ 0ºC (32ºF) (DIN B)
Thermistor, 10,000 ohms @ 25ºC (77ºF) - not available with transmitter
Add code “MT” for matched calibrated to transmitter. See RTD General Specifications.
Code
Housing
U
Galvanized steel utility box with cover - Industry Standard
W
Painted steel box with cover, NEMA 4
Code
(X”)
Other
Lead Wire Length (X)
Specify “X” dimension in inches, 18” is standard
Consult factory
For RTD assemblies with Sensor-Mate® Temperature Transmitter
Model
Sensor Mate Transmitter
4500H
4554H
- U
-
18
773-TM
- U
-
18
-
-
-
-
4554H - (0º to 100ºF)
Sample Model Number (RTD with Transmitter)
Sample Model Number (Sensor with no Transmitter)
-
Phone: (800) 880-9333
-
Fax: (512) 434-2901
Your Model Number
indust@weedinstrument.com
14
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H VA C M o d e l 7 7 3
773-PB
100 ohm Pt RTD input/ PC programmable/ 4-20mA output
1000 ohm Pt RTD input/ 4-20mA output (to be discontinued in 2004)
Code
Temperature Range
(__ to __)
Specify ºC or ºF