Emerson 2700, 1700 installation manual transmitters Not intrinsically safe

Specifications

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

Output Wiring – Intrinsically Safe

Output Wiring – Configurable I/O Output Wiring – Fieldbus/PROFIBUS

Specifications

Installation Manual 57