VFL Series User Manual v2.0 10/20
Proportional Band (Pb): 0.0 to 300.0% of range
Integral time or ‘Reset’ (Ti): 0 to 3600 seconds (includes anti-
reset wind-up)
Derivative time or ‘Rate’ (Td): 0 to 900 seconds
Cycle Time: 1 to 100 seconds (set to ‘0’ for 4-20mA output)
Hysteresis: 0 ~ 2000 (0.0 ~ 200.0)
Dead band: -1000 ~ 1000 (-100.0 ~ 100.0)
17.6 Alarm Output Specifications
Rated for 3 Amps @ 110VAC or 24VDC (Resistive Loads)
Deviation and Absolute Alarms with hysteresis adjustment
Alarm relay can also be used as a Soak or Event Timer
17.7 Analog Output Specifications
Set Cycle Time parameter in the PID Menu (Ct) to ‘0’ to enable
the analog output.
18. Two-year Warranty
FLIR Systems, Inc. warrants this Extech brand instrument to be free of defects in parts and workmanship
for two years from date of shipment (a six-month limited warranty applies to sensors and cables). To view
the full warranty text please visit: http://www.extech.com/support/warranties.
19. Calibration and Repair Services
FLIR Systems, Inc. offers calibration and repair services for the Extech brand products we sell. We offer
NIST traceable calibration for most of our products. Contact us for information on calibration and repair
availability, refer to the contact information below. Annual calibrations should be performed to verify
meter performance and accuracy. Product specifications are subject to change without notice. Please visit
our website for the most up-to-date product information: www.extech.com.
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