Appendix, Specifications – Watlow Series SD Limit User Manual
Page 51
Wa t l o w S e r i e s S D L i m i t
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4 9
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A p p e n d i x
Specifications
Controller
•
Microprocessor-based, user-programmable
•
1 Universal input, 3 outputs (2 outputs on 1/32 DIN)
•
Output 1, latching mechanical relay limit output
•
Display update: 10 Hz, adjustable digital filter
•
Communication output isolated
•
Displayed in °C, °F or process units
Operator Interface
•
Dual 4-digit LED displays
•
Advance, Up Arrow, Down Arrow, RESET (Home) 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, N, C (W5), E, PTII (F), D (W3), B, R, S 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: 1 to 10VÎ (dc), 1 to 5VÎ (dc), 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
Input ranges
Allowable Operating Ranges
Thermocouple Input
•
Calibration accuracy: ±0.1% of input span ±1°C at standard
conditions
•
Temperature stability: ±0.2 degree per degree change in
ambient for J, K, T, N, E, 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 range ±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
Output Types
Open Collector
•
Maximum voltage: 42VÎ (dc)
•
Maximum current: 250 mA
•
Class 2 power source required
Switched DC
•
Supply voltage minimum: 6VÎ (dc) @ 30 mA
•
Supply voltage maximum: 12VÎ (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 240VÅ (ac), resistive
•
Maximum offstate leakage current: 100 µA rms
•
For resistive loads only, must use RC suppression for inductive
loads
•
20 VA pilot duty, 120/240VÅ (ac)
•
Electrical life 100,000 cycles at rated current
Appendix
A
Type J:
32
to
1,500°F
or
0
to
815°C
Type K:
-454
to
2,500°F
or
-270
to
1,370°C
Type T:
-454
to
750°F
or
-270
to
400°C
Type N:
32
to
2,372°F
or
0
to
1,300°C
Type E:
-454
to
1,470°F
or
-270
to
800°C
Type C:
32
to
4,200°F
or
0
to
2,315°C
Type D:
32
to
4,200°F
or
0
to
2,315°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
DIN
-328
to
1,472°F
or
-200
to
800°C
Process
-1,999
to
9,999 units
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 N:
32 to
2,282°F
or
0
to
1,250°C
Type E:
-328 to
1,470°F
or
-200
to
900°C
Type C (W5):
32 to
4,200°F
or
0
to
2,315°C
Type D (W3):
32 to
4,200°F
or
0
to
2,315°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