Watlow F4T Install & Troubleshooting • 51 • Chapter 6 Appendix
Operating Range (cont.)
Input Type Range Low Range High
mAdc 0 20
mAac -50 50
Potentiometer, 1K
range
0 1200
Resistance, 5K range 0 5000
Resistance, 10K range 0 10000
Resistance, 20K range 0 20000
Resistance, 40K range 0 40000
4 Thermistor Inputs
Input Type
Max Error @
25 Deg C
Accuracy
Range Low
Accuracy
Range High
Units
Thermistor, 5K range ±5 0 5000 Ohms
Thermistor, 10K range ±10 0 10000 Ohms
Thermistor, 20K range ±20 0 20000 Ohms
Thermistor, 40K range ±40 0 40000 Ohms
• 0 to 40KΩ, 0 to 20KΩ, 0 to 10KΩ, 0 to 5KΩ
• 2.252KΩ and 10KΩ base at 77°F (25°C)
• Linearization curves built in
• Third party Thermistor compatibility requirements
Base R @ 25C Alpha Techniques Beta THERM YSI
2.252K Curve A 2.2K3A 004
10K Curve A 10K3A 016
10K Curve C 10K4A 006
3 Universal Process/Retransmit Outputs
• Universal process/retransmit, Output range selectable:
- 0 to 10V Î(dc) into a min. 4,000Ω load
- 0 to 20mA into max. 400Ω load
Resolution
- dc ranges: 2.5mV nominal resolution
- mA ranges: 5 µA nominal resolution
Calibration Accuracy
- dc ranges: ±15 mV
- mA ranges: ±30 µA
Temperature Stability
- 100 ppm/°C
3 Mechanical Relay Outputs
• 2 Form C relays, 1 Form A relay. Form A shares common with 1 Form C relay
• Each relay is rated at 5A, 24 to 240VÅ (ac) or 30VÎ (dc)max., resistive load, 100,000
cycles at rated load. Requires a min. load of 20mA at 24V, 125 VA pilot duty at 120/240
VÅ (ac) or 25 VA at 24 VÅ (ac)
Anderson-Bolds ~ 216-360-9800
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