AW Gear Meters RT-10 - Manual (Page 9)

RT‐10 Flow Monitor
Operation and Programming Manual
8
Specifications
 Flow Meter Compatibility: positive displacement: JV and HPM series (except JV‐01, JV‐10, and
JV‐12); turbine: TR, TRG, and TA Series (linear flow range may vary)
 Power: internal 3.6V “C” cell battery, field replaceable; four year battery power estimated
average life, depending on RT‐10 model
 Sensor/Monitor Frequency Range: 0‐3,000 Hz
 Fiber‐Optic Frequency Output (Option): 0‐100 Hz programmable scaling
 Temperature Rating: ‐20° to 70°C (‐4° to 158°F) ambient; 80°C (175°F) maximum fluid
temperature
 2‐Wire Loop Powered 4‐20 mA Output (Option): loop power = 12‐24 Vdc ±10%; max. load = 250
Ohm @ 12V, 500 Ohm @ 24V
 Enclosure Certification: NEMA 4X
Customer Connections
Two types of connections are available, depending on your need and the model you choose.
Loop‐Powered Analog Output (loop‐powered analog output models only)
A two‐wire loop powered 4‐20 mA output option with an analog Rate output has 16‐bit resolution.
Supply voltage is between 12 and 24VDC, with maximum loads from 250Ω at 12VDC to 500Ω at 24VDC.
The RT‐10 utilizes the AD421 output device manufactured by Analog Devices. The minimum output is
trimmed to 4.00mA by the device manufacturer. Consult the manufacturer’s data sheet for complete
specifications regarding offset tolerance.
Program the scaling value for the mA output from the Rate display screen. (See ANALOG Scaling on page
18 for instructions on scaling of the analog output.)
Wiring for the loop powered output option is via pig‐tail leads with a 3/4" NPT wire exit for conduit
connection. See illustration next page.
Connection to conduit is required to maintain the enclosure’s hazardous location rating. Make all
connections in accordance with local and national electrical codes.
Make certain circuits are not live while wiring the RT‐10 in a hazardous area. Keep cover tightly closed
while circuits are alive.
Notice
Caution