Appendix, Specifications – Watlow Series SD31 PID with Optional Countdown Timer User Manual
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Wa t l o w S e r i e s S D 3 1
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6 3
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A p p e n d i x
Specifications
Controller
•
1/32 DIN, microprocessor-based, user-selectable control modes
•
Heat and cool autotune for control outputs
•
1 Universal input, 2 outputs
•
Control outputs user-selectable as on-off, P, PI, PID
•
Display update: 10 Hz, adjustable digital filter
•
Output update: burst, 0.1 to 999.9 seconds
•
Communication output isolated
•
Displayed in °C, °F or process units
Operator Interface
•
Single 4-digit LED displays
•
SET, Infinity (Home), Up Arrow, Down Arrow, tactile keys
Standard Conditions For Specifications
•
Ambient temperature 25°C (77°F) ±3°C, rated line voltage, 50
to 60Hz, 0 to 90% RH non-condensing, 15-minute warm-up
Universal Input
•
Sampling rate: 6.5 Hz.
Thermocouple
•
Type J, K, T, E, N, C (W5), D (W3), PTII (F), R, S, B thermocou-
ple types. Whole or tenth of a degree resolution.
•
>20 M
Ω
input impedance
•
Maximum 20
Ω
source resistance
RTD
•
2- or 3-wire platinum, 100
Ω
•
DIN curve (.00385 curve)
•
Whole or tenth degree indication
•
390 µA nominal RTD excitation currrent
Process
•
Range selectable: 0 to 10V
Î (dc), 0 to 5VÎ (dc), 1 to 5VÎ (dc), 0
to 20 mA, 4 to 20 mA. (Can reverse low and high values.)
•
Voltage input impedance 20 k
Ω
•
Current input impedance 100
Ω
•
Minimum current source resistance 1 M
Ω
•
Input resolution 50,000 bits (approximately) at full scale
Input Accuracy Span Ranges
Thermocouple Input
•
Calibration accuracy: ±0.1% of input accuracy span ±1°C at
standard conditions
•
Temperature stability: ±0.2 degree per degree change in
ambient for J, K, T, E, N, F
±0.3% for C and D
±0.4% for B, R (excluding 0 to 100°C) and S (excluding 0 to
100°C)
±0.5% for R and S (entire input accuracy range)
RTD Input
•
Calibration accuracy ±0.1% of input accuracy span ±1°C at
standard conditions
•
Temperature stability: ±0.05 degree per degree change in
ambient
Process Input
•
Voltage input ranges
Accuracy ±10mV ±1 LSD at standard conditions
Temperature stability ±100 ppm/°C maximum
•
Milliamp input ranges
Accuracy ±20µA ±1 LSD at standard conditions
Temperature stability ±100 ppm/°C maximum
Allowable Operating Ranges
Output Types
•
Output update rate: 6.5 Hz.
Switched DC
•
Supply voltage minimum: 6V
Î (dc) @ 30 mA
•
Supply voltage maximum: 12V
Î (dc) into an infinite load
Solid-state Relay
•
Optically isolated
•
Zero cross switched
•
Without contact suppression
•
Minimum load current: 10 mA rms
•
Maximum current: 0.5A rms at 24 to 240V
Å (ac), resistive
•
20 VA pilot duty, 120/240V
Å (ac), inductive
•
Must use RC suppression for inductive loads
•
Maximum offstate leakage current: 100 µA rms
Type J:
32
to
1,500°F
or
0
to
816°C
Type K:
-328
to
2,500°F
or
-200
to
1,371°C
Type T:
-328
to
750°F
or
-200
to
399°C
Type E:
-328
to
1,470°F
or
-200
to
799°C
Type N:
32
to
2,372°F
or
0
to
1,300°C
Type C (W5):
32
to
4,200°F
or
0
to
2,316°C
Type D (W3):
32
to
4,200°F
or
0
to
2,316°C
Type PTII (F):
32
to
2,543°F
or
0
to
1,395°C
Type R:
32
to
3,200°F
or
0
to
1,760°C
Type S:
32
to
3,200°F
or
0
to
1,760°C
Type B:
32
to
3,300°F
or
0
to
1,816°C
RTD (DIN)
-328
to
1,472°F
or
-200
to
800°C
Process
-1,999
to
9,999 units
Appendix
A
Type J:
32 to
1,382°F
or
0
to
750°C
Type K:
-328 to
2,282°F
or
-200
to
1,250°C
Type T:
-328 to
662°F
or
-200
to
350°C
Type E:
-328 to
1,470°F
or
-200
to
799°C
Type N:
32 to
2,282°F
or
0
to
1,250°C
Type C (W5):
32 to
4,200°F
or
0
to
2,316°C
Type D (W3):
32 to
4,200°F
or
0
to
2,316°C
Type PTII (F):
32 to
2,540°F
or
0
to
1,393°C
Type R:
32 to
2,642°F
or
0
to
1,450°C
Type S:
32 to
2,642°F
or
0
to
1,450°C
Type B:
1,598 to
3,092°F
or
870
to
1,700°C
RTD:
-328 to
1,472°F
or
-200
to
800°C
Process:
-1,999
to 9,999 units