ONICON F-5100 Insertion - Manual (Page 19)

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F-5100 Insertion Thermal Mass Flow Meter Manual 05/15 - 0663-20 / 18333 Page 19
3.5.1 Analog Output
The F-5100 is provided with a single 4-20 mA output for instantaneous rate. This output is
electrically isolated from earth, but shares common with the scaled pulse output and, on
DC versions of the sensor, with input power.
The output is programmed at the factory. Refer to the attached laminated tag or the
certificate of calibration for information regarding the programmed full scale flow.
Contact ONICON for assistance if the full scale flow rate requires reprogramming.
3.5.2 Pulse Output
The F-5100 is provided with a single scaled pulse output for totalizing. This is an active
pulse output with a nominal pulse amplitude of 24 VDC (12 VDC for 12 V versions of the
sensor). In all versions, the pulse duration is 500ms.
This DC pulse output is electrically isolated from earth, but shares common with the
analog output and, on DC versions of the sensor, with input power. This output is
programmed at the factory. Refer to the attached laminated tag or the certificate of
calibration for information regarding the programmed pulse value.
Contact ONICON for assistance if the scaled pulse output requires reprogramming.
CAUTION
Cable glands shipped with the sensor are for shipping purposes only. Remove and replace with
approved glands when installing the sensor.
!
WARNING
If the sensor is being installed in a Class 1 hazardous location, the installation must comply with
all appropriate electrical codes.
!
WARNING
The sensor must be connected to a protective earth wire at the transmitter and at the sensor for
remote mount sensors as per electrical codes.
!
3.5 ELECTRICAL INSTALLATION
The electrical installation of this product must comply with all federal, state and local building
codes. Connect and re-verify all output signal and safety earth wiring connections prior to
connecting power.
All connections must be made through the (2) ½’ NPT cable glands located on the enclosure.
To access the terminal wiring connections, remove the rear cover from the enclosure.
IMPORTANT NOTICE
The nominal pulse output voltage from this sensor is 24 VDC. A pulse isolator module has been
provided with this sensor that will convert this active pulse into an isolated dry contact output.
Refer to section 3.5.4 Using the Pulse Isolator Module for details.
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