Temperature Sensors
HEL-700 Series
Platinum RTDs
FUNCTIONAL BEHAVIOR
ACCURACY VS TEMPERATURE
2
3
4
RT ⍧ R0(1+AT+BT −100CT +CT )
RT ⍧ Resistance (ȉ) at temperature T (°C)
R0 ⍧ Resistance (ȉ) at 0°C
Tolerance
Standard ±0.2%
Optional ±0.1%
Temperature
±ǵR*
(ȉ)
±ǵT
(°C)
±ǵR*
(ȉ)
±ǵT
(°C)
(°C)
T ⍧ Temperature in °C
A ⍧ Ȋ + Ȋ Ȏ
B ⍧ − Ȋ Ȏ
C
T<0 ⍧ − Ȋ ȋ
−200
−100
0
6.8
2.9
1.6
0.8
0.5
0.8
1.6
2.4
3.2
4.0
4.8
5.1
2.4
1.0
2.2
4.3
6.2
8.3
9.6
10.4
1.2
0.6
0.3
0.6
1.2
1.8
2.5
3.0
3.3
2
4
100
100
100
2.0
CONSTANTS
100
200
300
400
500
600
2.9
-1
5.6
Alpha, Ȋ (°C )
0.00375
±0.000029
0.003850
±0.000010
8.2
Delta, Ȏ (°C)
Beta, ȋ (°C)
1.605 ± 0.009
1.4999 ± 0.007
11.0
12.5
15.1
0.16
0.10863
-1
-3
-3
A (°C )
3.81×10
3.908×10
-2
-7
-7
*1000ȉ RTD. Divide ǵ by 10 for 100ȉ RTD.
B (°C )
−6.02×10
−5.775×10
-4
-12
-12
C (°C )
−6.0×10
−4.183×10
Both ȋ ⍧ 0 and C ⍧ 0 for T>0°C
NIST CALIBRATION
NISTtraceablecalibrationprovidesresistancereadingsat1, 2or
3 standard temperature points to yield a resistance versus tem-
perature curve with 10x better accuracy.
RESISTANCE VS TEMPERATURE CURVE
Calibration
T (°C)
-200
-100
0
1 Point
±ǵT (°C)
0.9
2 Point
±ǵT (°C)
—
3 Point
±ǵT (°C)
—
0.5
0.27
0.03
0.11
0.2
0.15
0.03
0.07
0.08
6.2
0.03
0.4
100
200
0.8
300
1.2
0.33
0.5
400
1.6
8.3
500
2.0
0.8
9.6
600
2.6
1.2
10.4
SPECIFICATIONS
Sensor Type
Thin film platinum RTD;
R0 ⍧ 1000 ȉ @ 0°C; alpha ⍧ 0.00375 ȉ/ȉ/°C
R0 ⍧ 100 ȉ @ 0°C; alpha ⍧ 0.00385 ȉ/ȉ/°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 (R0 ±0.2% trim), whichever is greater
±0.3°C or 0.6% of temperature, °C (R0 ±0.1% trim), whichever is greater (optional)
Base Resistance and
Interchangeability, R0 ± ǵR0
1000 ± 2 ȉ (±0.2%) @ 0°C
1000 ± 1 ȉ (±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
Operating Current
Stability
<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
2 mA maximum for self heating errors of <1°C; 1 mA recommended
<0.25°C/year; 0.05°C per 5 years in occupied environments
<15 mW/°C for 0.85 O.D. typical
Self Heating
Insulation Resistance
Construction
>50 Mȉ at 50 VDC at 25°C
Alumina case; Epoxy potting (Teflon leads); Ceramic potting (fiberglass leads)
Nickel coated stranded copper, Teflon or Fiberglass insulated
Lead Material
88
Honeywell ɀ MICRO SWITCH Sensing and Control ɀ1-800-537-6945 USA ɀ ⍣1-815-235-6847 International ɀ1-800-737-3360 Canada
HONEYWELL [ Honeywell ]
