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Installation Manual 57
Specifications
Output Wiring – Configurable I/O SpecificationsOutput Wiring – Fieldbus/PROFIBUSOutput Wiring – Intrinsically Safe Output Wiring – Configurable I/O SpecificationsOutput Wiring – Fieldbus/PROFIBUSOutput Wiring – Intrinsically Safe Output Wiring – Configurable I/O SpecificationsOutput Wiring – Fieldbus/PROFIBUSOutput Wiring – Intrinsically Safe Output Wiring – Configurable I/O SpecificationsOutput Wiring – Fieldbus/PROFIBUSOutput Wiring – Intrinsically Safe
One frequency/pulse output (Model 1700 transmitters) or frequency/pulse/discrete output (Model
2700 transmitters):
• Not intrinsically safe
• Internally powered (active)
• Maximum current: 100 mA
• Output voltage: +24 VDC ±3%, with a 2.2 kohm internal pull-up resistor
• Frequency/pulse output (Model 1700/2700):
- Can be used to indicate either flow rate or total; Model 1700 output reports the same flow
variable as the mA output, Model 2700 output is independent from mA output
- Scalable to 10,000 Hz
- Linear with flow rate to 12,500 Hz
- Configurable polarity: active high or active low
• Discrete output (Model 2700 only):
- Can report event 1, event 2, event 1 or 2, flow direction, flow switch, calibration in
progress, or fault
- Maximum sink capability: 500 mA
- Configurable polarity: active high or active low
Model 1700/2700 transmitters with intrinsically safe outputs option board (output option code D)
Model 1700 has one 4–20 mA output; Model 2700 has two 4–20 mA outputs:
• Intrinsically safe
• Externally powered (passive)
• Isolated to ±50 VDC from all other outputs and earth ground
• Maximum input voltage: 30 VDC, 1 watt maximum
• Model 1700 can report mass flow or volume flow; Model 2700 can report mass flow, volume
flow, density, temperature, or drive gain; transmitters with the petroleum measurement
application (API) or enhanced density application can also report standard volume flow and
density at reference temperature
• Linear with process from 3.8 to 20.5 mA, per NAMUR NE43 (June 1994)
• Maximum load limits: see following chart