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LF-Series Flowmeters: Sensor/Transmitter Installation 77
Dimensions and Specifications
I/O Wiring – DIN CIO Return PolicySpecificationsI/O Wiring – DIN AN
Table A-19 DIN transmitter input/output signals
All transmitters One 4-wire sensor signal input connection with ground
Output option code 2
(1 mA, 1 FO)
One active 4–20mA output
• Not intrinsically safe
• Isolated to ±50 VDC from all other outputs and earth ground
• Maximum load limit: 600 ohms
• Can report mass flow or volume flow
• Output is linear with process from 3.8 to 20.5 mA, per NAMUR NE43 (June 1994)
One active or passive frequency/pulse output
• Not intrinsically safe
• Can report mass flow or volume flow, which can be used to indicate flow rate or
total
• Frequency output reports the same flow variable as the mA output
• Scalable to 10,000 Hz
• Maximum output of +24 VDC ±3% with 2.2 kohm internal pull-up resistor
• Output is linear with flow rate to 12,500 Hz
Output option code 5
(2 mA, 1 FO configurable,
multivariable transmitter only)
One or two active 4–20 mA outputs
• Not intrinsically safe
• Isolated to ±50 VDC from all other outputs and earth ground
• Maximum load limit:
- mA1: 820 ohms
- mA2: 420 ohms
• Can report mass flow, volume flow, density, temperature, or drive gain
Output is linear with process from 3.8 to 20.5 mA, per NAMUR NE43 (June 1994)
One active or passive frequency/pulse output
• Not intrinsically safe
• Can report mass flow or volume flow, which can be used to indicate flow rate or
total
• Scalable to 10,000 Hz
•Power:
- Internal (active): +15 VDC ±3% with 2.2 kohm internal pull-up resistor
- External (passive): +30 VDC maximum, 24 VDC typical, sinking up to 500 mA at
30 VDC
Output is linear with flow rate to 12,500 Hz
One or two active or passive discrete outputs
• Not intrinsically safe
• Can report event 1, event 2, event 1 and event 2, flow switch, forward/reverse
flow, calibration in progress, or fault
•Power:
- Internal (active): +15 VDC ±3% with 2.2 kohm internal pull-up resistor
- External (passive): +30 VDC maximum, +24 VDC typical, sinking up to 500 mA
at 30 VDC
Maximum sink capability: 500 mA
One discrete input
• Can be configured for internal or external power
• Not intrinsically safe
•Power:
- Internal: +15 VDC, 7 mA maximum source current
- External: +3 to 30 VDC maximum
Can reset all totals, reset mass total, reset volume total, or start sensor zero