HEL-700中文资料

FEATURES

?Linear resistance vs temperature

?Accurate and Interchangeable

?Excellent stability

?Small for fast response

?Wide temperature range

?3-packaging options

TYPICAL APPLICATIONS

?HVAC - room, duct and refrigerant

equipment

?Electronic assemblies - thermal man-

agement, temperature compensation

?Process control - temperature regu-

lation

HEL-700 T hin Film Platinum RT Ds (Re-

sistance Temperature Detectors) provide

excellent linearity, accuracy, stability and

interchangeability. Resistance changes

linearly with temperature. Laser trimming

provides ±0.3°C interchangeability at

25°C.

1000?, 375 alpha provides 10X greater

sensitivity and signal-to-noise. Both

1000?and 100?provide interchange-

abilities of ±0.6°C or better from -100°C to

100C, and ±3.0°C at 500°C.

MOUNTING DIMENSIONS (for reference only)

HEL-700 Ribbon Lead

HEL-700 Radial Chip

HEL-700 SMT (Axial) Flip Chip

ORDER GUIDE

HEL-700

Thin Film Platinum RTD

-U1000?, 0.00375 ?/?/°C

-T100?, 0.00385 ?/?/°C DIN Standard

-0±0.2% Resistance Trim (Standard)

-1±0.1% Resistance Trim (Optional)

-A Radial Ribbon Lead

-B Radial Chip

-C SMT Axial Flip Chip (1000?

ONLY)

Fig. 1: Linear Output Voltage

Fig. 2: Adjustable Point (Comparator) Interface Temperature

FUNCTIONAL BEHAVIOR

R T ?R 0(1+AT +BT 2?100CT 3+CT 4)

RT ?Resistance (?) at temperature T (°C)R 0?Resistance (?) at 0°C T ?Temperature in °C A ??+?? B ????C T <0????

1001002

1004CONSTANTS Alpha,?(°C -1)0.00375

0.003850±0.000029±0.000010Delta,?(°C) 1.605 ±0.009 1.4999 ±0.007Beta,?(°C)0.160.10863A (°C -1) 3.81×10-3 3.908×10-3B (°C -2)?6.02×10-7?5.775×10-7C (°C -4)

?6.0×10-12

?4.183×10-12

Both ??0 and C ?0 for T >0°C

RESISTANCE VS TEMPERATURE CURVE

ACCURACY VS TEMPERATURE

HEL-700 platinum RTDs are available in two base resistance trim tolerances: ±0.2% or ±0.1%. The corresponding resistance interchangeability and temperature accuracy for these toler-ances are:Tolerance Standard ±0.2%Optional ±0.1%Temperature

±?R*±?T ±?R*±?T (°C)

(?)(°C)(?)(°C)?200 6.8 1.6 5.1 1.2?100

2.90.8 2.40.60 2.00.5 1.00.3100 2.90.8 2.20.6200 5.6 1.6 4.3 1.23008.2 2.4 6.2 1.840011.0

3.28.3 2.550012.5

4.09.6 3.0600

15.1

4.8

10.4

3.3

*1000?RTD. Divide ?R by 10 for 100?RTD.

CAUTION

PRODUCT DAMAGE

The inherent design of this component causes it to be sensitive to electrostatic discharge (ESD). To prevent ESD-induced damage and/or degradation, take normal ESD precautions when handling this product.

SPECIFICATIONS Sensor Type Thin film platinum RTD;

R 0?1000 ?@0°C; alpha ?0.00375 ?/?/°C R 0?100 ?@0°C; alpha ?0.00385 ?/?/°C Temperature Range ?200 to +540°C (?300 to +1000°F)

Temperature Accuracy ±0.5°C or 0.8% of temperature, °C (R 0±0.2% trim), whichever is greater

±0.3°C or 0.6% of temperature, °C (R 0±0.1% trim), whichever is greater (optional)Base Resistance and

Interchangeability, R 0±?R 01000 ±2 ?(±0.2%) @0°C

1000 ±1 ?(±0.1%) @0°C (optional)

Linearity ±0.1% of full scale for temperatures spanning ?40°to +125°C ±2.0% of full scale for temperatures spanning ?200°to +540°C Time Constant <0.15 seconds in water @3 ft./sec.

<1 second on metal surfaces: <4 seconds in air @10 ft./sec.Operating Current 2 mA max. For self-heating errors of 1°C 1 mA recommended

Stability Better than 0.25°C/year: 0.05°C/5 years for occupied environments Self-Heating 0.3 mW/°C

Insulation Resistance >50 M ?@50 VDC @25°C

Case Material

99% alumina support, vapor deposited alumina passified resistance portion, refractory glass passified overall

Lead Material – Ribbon Platinum ribbon, 0.002 ×0.010 ×0.16 in. long nominal Lead Pull Strength – Ribbon

200 grams nominal pulling up from surface

FEATURES

?Linear resistance vs temperature

?Accurate and Interchangeable

?Excellent stability

?Teflon or fiberglass lead wires

?Wide temperature range

?Ceramic case material

TYPICAL APPLICATIONS

?HVAC – room, duct and refrigerant

equipment

?Instrument and probe assemblies –

temperature compensation

?Process control – temperature

regulation

HEL-700 Series elements are fully assem-

bled, ready to use directly or in probe

assemblies without the need for fragile

splices to extension leads.

The 1000?, 375 alpha version, provides

10X greater sensitivity and signal-to-

noise. Optional N IST calibrations im-

prove accuracy to ±0.03°C at 0°C.

ORDER GUIDE

HEL-705

28 ga. TFE Teflon, 2-wire only

HEL-707

28 ga. Fiberglass, 2-wire only

HEL-71128 ga. TFE Teflon (2-wire 1000?, 3-wire 100?)

HEL-71228 ga. Fiberglass (2-wire 1000?, 3-wire 100?)

HEL-71624 ga. TFE Teflon (2-wire 1000?, 3-wire 100?)

HEL-71724 ga. Fiberglass (2-wire 1000?, 3-wire 100?)

-U1000?, 0.00375 ?/?/°C

-T100?, 0.00385 ?/?/°C DIN Standard

-0±0.2% Resistance Trim (Standard)

-1±0.1% Resistance Trim (Optional)

-12Lead wire length, 12 inches

-00No NIST calibration

-C1NIST @0°C

-C2NIST @0 & 100°C

-C3NIST @0, 100 & 260°C

MOUNTING DIMENSIONS (for reference only)

Fig. 1: Wheatstone Bridge 2-Wire Interface

Fig. 2: Linear Output Voltage

Fig. 3: Adjustable Point (Comparator) Interface

CAUTION

PRODUCT DAMAGE

The inherent design of this component causes it to be sensitive

to electrostatic discharge (ESD). To prevent ESD-induced

damage and/or degradation, take normal ESD precautions

when handling this product.

Temperature

FUNCTIONAL BEHAVIOR

R T ?R 0(1+AT +BT 2?100CT 3+CT 4)

RT ?Resistance (?) at temperature T (°C)R 0?Resistance (?) at 0°C T ?Temperature in °C A ??+?? B ????C T <0????

1001002

1004CONSTANTS Alpha,?(°C -1)0.003750.003850±0.000029±0.000010Delta,?(°C) 1.605 ±0.009 1.4999 ±0.007Beta,?(°C)0.160.10863A (°C -1) 3.81×10-3 3.908×10-3B (°C -2

)

?6.02×10

-7

?5.775×10

-7

C (°C -4)?6.0×10-12?4.183×10-12

Both ??0 and C ?0 for T >0°C

RESISTANCE VS TEMPERATURE CURVE

ACCURACY VS TEMPERATURE Tolerance Standard ±0.2%Optional ±0.1%Temperature

±?R*±?T ±?R*±?T (°C)

(?)(°C)(?)(°C)?200 6.8 1.6 5.1 1.2?100

2.90.8 2.40.60 2.00.5 1.00.3100

2.90.8 2.20.6200 5.6 1.6 4.3 1.23008.2 2.4 6.2 1.840011.0

3.28.3 2.550012.5

4.09.6 3.0600

15.1

4.8

10.4

3.3

*1000?RTD. Divide ?by 10 for 100?RTD.

NIST CALIBRATION

NIST traceable calibration provides resistance readings at 1, 2 or 3 standard temperature points to yield a resistance versus tem-perature curve with 10x better accuracy.Calibration 1 Point 2 Point 3 Point T (°C)±?T (°C)±?T (°C)

±?T (°C)

-2000.9——-1000.50.270.1500.030.030.031000.40.110.072000.80.20.08300 1.20.33 6.2400 1.60.58.3500 2.00.89.6600

2.6

1.2

10.4

SPECIFICATIONS Sensor Type Thin film platinum RTD;

R 0?1000 ?@0°C; alpha ?0.00375 ?/?/°C R 0?100 ?@0°C; alpha ?0.00385 ?/?/°C Temperature Range TFE Teflon: ?200°to +260°C (?320°to +500°F)Fiberglass: ?75°to +540°C (?100°to +1000°F)

Temperature Accuracy ±0.5°C or 0.8% of temperature, °C (R 0±0.2% trim), whichever is greater

±0.3°C or 0.6% of temperature, °C (R 0±0.1% trim), whichever is greater (optional)Base Resistance and

Interchangeability, R 0±?R 01000 ±2 ?(±0.2%) @0°C

1000 ±1 ?(±0.1%) @0°C (optional)

Linearity ±0.1% of full scale for temperatures spanning ?40°to +125°C ±2.0% of full scale for temperatures spanning ?75°to +540°C

Time Constant <0.5 sec. 0.85 inch O.D. in water at 3 ft/sec; <1.0 sec, 0.85 inch O.D. in still water Operating Current 2 mA maximum for self heating errors of <1°C; 1 mA recommended Stability <0.25°C/year; 0.05°C per 5 years in occupied environments Self Heating

<15 mW/°C for 0.85 O.D. typical Insulation Resistance >50 M ?at 50 VDC at 25°C

Construction Alumina case; Epoxy potting (Teflon leads); Ceramic potting (fiberglass leads)Lead Material

Nickel coated stranded copper, Teflon or Fiberglass insulated