24PC datasheet(25/73 Pages) HONEYWELL

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Air Conditioning Temperature Sensor

Probes

A fully overmolded and protected sensor incorporating a specially

developed NTC (Negative Temperature Coefficient) to withstand very

aggressive, damp operating conditions. The housing is snap fit for easy

assembly.

Operating temperature range:

-30 °C to 100 °C [-22 °F to 212 °F]

Encapsulation:

Special NTC epoxy coating

Lead material:

Terminals are 2,8 mm x 0,8 mm [0.11 in x 0.03 in]

brass with a copper flash protection layer with

final plating to customer requirement (silver, tin, gold, etc.)

Dissipation constant:

2.5 mW/°C in still air

Time constant:

2 s in water, 15 s max. in still air

Resistance range at 25 °C [77 °F]

9 kOhm at 0 °C [32 °F] ±1.5 %

Refrigerant Temperature Sensor Probes

A fully sealed, quick response temperature sensor suitable for use in

HVAC systems.

Operating temperature range:

-40 °C to 140 °C [-40 °F to 284 °F]

Encapsulation:

NTC (Negative Temperature Coefficient) encapsulated in a

thermal heat paste

Lead material:

Terminals are 1,5 mm x 0,6 mm [0.06 in x 0.02 in]

brass with a copper flash protection layer with final

plating to customer requirement (silver, tin, gold, etc.)

Dissipation constant:

Tor values (time to reach 63.2 % of the difference

between two temperatures) are typically 10 s

rising temperature and 6 s falling temperature

Time constant:

None

Resistance range at 25 °C [77 °F]

2.5 kOhm at 20 °C [68 °F],

calibrated at ±3 % at 100 °C [212 °F]

Earth Return (Ground) Temperature

Sensor Probes

An all-metal temperature sensor, with the body being the ground,

incorporating a flat disc thermistor held flush on the base of the body by

a spring-loaded pressure pad. This sensor provides a quick response to

small variations in high temperature changes.

Operating Temperature Range:

-40 °C to 155 °C [-40 °F to 311 °F]

Encapsulation:

NTC (negative temperature coefficient)

encapsulated in a silicone paste

Lead Material:

Standard Lucar type or other variations

Dissipation Constant:

3 mW/°C in still air

Time Constant:

10 s in automotive coolant

Resistance Range at 25 °C [77 °F]

Per customer requirements

Surface Temperature Sensor Probes

Sensor assembly is designed to have good heat conductivity between the

thermistor element and the area to be monitored. Time response is

consistent with the thermal conductivity of the surface being measured.

Multiple configurations allow sensor to be mounted, bolted, riveted or

attached adhesively.

Operating temperature range:

-60 °C to 150 °C [-76 °F to 302 °F]

Encapsulation:

Thermally conductive epoxy used to pot

discrete component into surface-style housing

Lead material:

Insulated lead wires and terminals when required, other

options available

Dissipation constant:

3.3 mW/°C to 12 mW/°C

(varies with size and housing style)

Time constant:

1 s to 40 s (application dependent)

Resistance range at 25 °C [77 °F]

Per customer requirements

TEMPERATURE - PROBES

NAME

Air Conditioning Temperature Sensor Probe

NAME

Refrigerant Temperature Sensor Probe

NAME

Earth Return (Ground) Temperature Sensor Probe

NAME

Surface Temperature Sensor Probe

24PC Datasheet(PDF) 25 Page - Honeywell Solid State Electronics Center

24PC Datasheet(HTML) 25 Page - Honeywell Solid State Electronics Center

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