Watlow F4T User Manual

Watlow F4T • 315 • Chapter 6 Appendix
Flex Modules and Limit I/O Specifications
1 Universal Input
• Thermocouple, grounded or ungrounded sensors
- >20MΩ input impedance
• Max. of 2KΩ source resistance
• RTD 2 or 3 wire, platinum, 100Ω and 1000Ω @ 32°F (0°C) calibration to DIN curve
(0.00385Ω/Ω/°C)
- Maximum lead resistance 10Ω
• Process, 0-20mA @ 100Ω ,or 0-10V Î(dc) @ 20kΩ input impedance; scalable, 0 -
50mV
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
Resolution Input Ranges
- 0 to 10V: 200 µV nominal
- 0 to 20 mA: 0.5 mA nominal
• Potentiometer: 0 to 1,200Ω
• Inverse scaling
Input Type
Max Error @
25 Deg C
Accuracy
Range Low
Accuracy
Range High
Units
J ±1.75 0 750 Deg C
K ±2.45 -200 1250 Deg C
T (-200 to 350) ±1.55 -200 350 Deg C
N ±2.25 0 1250 Deg C
E ±2.10 -200 900 Deg C
R ±3.9 0 1450 Deg C
S ±3.9 0 1450 Deg C
B ±2.66 870 1700 Deg C
C ±3.32 0 2315 Deg C
D ±3.32 0 2315 Deg C
F (PTII) ±2.34 0 1343 Deg C
RTD, 100 ohm ±2.00 -200 800 Deg C
RTD, 1000 ohm ±2.00 -200 800 Deg C
mV ±0.05 0 50 mV
Volts ±0.01 0 10 Volts
mAdc ±0.02 2 20 mAmps DC
mAac ±5 -50 50 mAmps AC
Potentiometer,
1K range
±1 0 1000 Ohms

Watlow F4T Specifications

General

Inputs	Thermocouple, RTD, mA, V
Outputs	Relay, SSR, mA, V
Communication	Ethernet, Modbus RTU
Data Logging	Yes
Certifications	CE, UL, cUL, RoHS
Control Modes	PID, On/Off
Power Supply	100 to 240 VAC
Operating Temperature	0 to 50°C
Enclosure Rating	IP65
Display	4.3 in. (109 mm) color touch panel LCD
Control Loops	Up to 4