Thin Film Platinum RTDs
HEL-700 Series
Datasheet
Thin Film Platinum RTDs
The HEL-700 Series Thin Film Platinum RTDs (Resistance Temperature Detectors) are designed to monitor or control critical
temperatures in industrial applications. They provide a linear change in resistance versus temperature, combining high
linearity, stability, accuracy, and wide temperature range in a small, fast-response package.
The HEL-700 Series is designed to measure temperatures from -75 °C to 540 °C [-100 °F to 1000 °F] with high accuracy.
These fully-assembled elements are ready-to-use in probe assemblies, without the need for fragile splices to extension
leads.
These products are manufactured using a thin layer of platinum deposited on an alumina substrate and are laser trimmed
to a resistance interchangeability of a standard ±0.2% (±0.5 °C accuracy) or optional ±0.1% (±0.3 °C accuracy). The sensor
chip is then glassed, wired and potted or ceramic fired to result in a cylindrical alumina package with either TFE Teflon®- or
fiberglass-insulated lead wires.
Key Features
Potential Applications
•
Wide temperature range
Temperature sensing for monitoring, compensation and regulation in:
•
Interchangeable
•
Accurate
Industrial
•
Linear resistance vs temperature
•
HVAC equipment
•
Fast response
•
Instrument and probe assemblies
•
Laser trimmed
•
Process control
•
Ceramic case material
•
Motor windings and bearings
•
TFE Teflon or fiberglass leadwires
•
Battery packs
•
Multiple small sizes
•
Environmental chambers
•
Ready-to-use, fully assembled elements
•
Ovens and kilns
•
Drill holes in large objects
®
MEDICAL
•
Autoclaves
AErOSPACE/DEFENSE
•
Aircraft
•
Space vehicles
Wide temperature Range • INTERCHANGEABLE • ACCURATE
2
sensing.honeywell.com
Thin Film Platinum RTDs, HEL-700 Series
Table 1. Specifications
Condition
Parameter
0 °C
0.00375 Ω/Ω/°C
0.00385 Ω/Ω/°C
Temperature range:
TFE Teflon
fiberglass
—
-70 °C to 260 °C [-94 °F to 500 °F]
-75 °C to 540 °C [-100 °F to 1000 °F]
Temperature accuracy:
R0 ±0.2% trim (standard)
R0 ±0.1% trim (optional)
—
±0.5°C or 0.8% of temperature, whichever is greater
±0.3°C or 0.6% of temperature, whichever is greater
0 °C
1000 Ω ±2 Ω
1000 Ω ±1 Ω
—
±0.1% of full scale
±2.0% of full scale
water at 3 ft/s
still water
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