Thermo Scientific LevelPRO, User Manual

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Product Overview
Features
Table 1-1. Inputs & Outputs
Inputs – Three 4–20 mA inputs, full scale ± 0.3% over operating
temperature range; fault high/low detection
–
Two 0 to 10 VDC voltage inputs, full scale ± 0.3% over operating
temperature range
–
Two digital inputs (DI) provide contact input with in5 VDC
wetting voltage
–
Temperature compensation circuitry with 100-ohm Platinum RTD,
3- or 4-wire; full scale ± 0.4ºC over operating temperature
Current outputs
–
4–20 mA output, full scale ± 0.3% over operating temperature
range
•
Isolated, loop-powered (default)
•
Isolated, self-powered output
–
Optional Intrinsically Safe Input/Output 4–20 mA output, full scale
± 0.3% over operating temperature range temperature range
•
Isolated, loop-powered (default)
•
Isolated, self-powered output
Contact closure (relay)
outputs Two relays, DPDT-fully sealed 8 A at 250 VAC
Serial outputs –
–
–
–
–
RS485 half duplex
RS232 full duplex
Fieldbus: A LevelPRO detector’s DD is available from
the Fieldbus Foundation™ website. The DD is a DD4
or DD5, interpreted by a host implementing DD
Services 4.x or 5.x
(Pending)
(Pending)
Features
Setup Wizard The setup wizard enables you to quickly configure the system by requiring you to
enter all of the basic parameters. Additional menu groups contain fields in which you
can enter specialized parameters and commands, allowing you to customize the
detector for a wide variety of applications.
Instantaneous
Response
Thermo Fisher’s Dynamic Process Tracking (DPT) ensures there is no lag time in the
system’s response to significant changes in level. When changes occur, the DPT feature
reduces the normal averaging time constant by a factor of eight, ensuring a rapid,
smooth output response. When the process stabilizes, a longer time constant is applied
to reduce the fluctuations inherent in radiation-based measurements. In this way,
process level changes are immediately reflected in the transmitter output, while the
effects of statistical variations in the radiation measurement are greatly reduced.
Thermo Scientific LevelPRO User Manual
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