The RT-Ex10 is a meter-mounted battery powered digital flow monitor. A large, six segment
LCD display provides easy to read indication of flow rate and totals in any engineering unit.
Programming, display mode selection, or totalizer reset is accomplished using an attached
magnet without opening the enclosure or using the pushbuttons on the faceplate with cover
off.
Options include a loop-powered 4-20 mA rate output, fiber-optic input,and a scaled fiberoptic frequency output. A variety of sensor options are available to make the RT-Ex10
compatible with most AW Company flowmeters.
Loop-Powered Analog Output (loop-powered analog output models only)
A two-wire loop powered 4-20 mA output option is offered for the RT-Ex10. The analog Rate
output has 16-bit resolution. Supply voltage can be between 12 and 24Vdc with maximum loads
from 250Ω at 12Vdc to 500Ω at 24Vdc. The RT-Ex10 utilizes the output device AD421
manufactured by Analog Devices. The minimum output is trimmed to 4.00mA by the device
manufacturer. Consult the manufacturer’s data sheet for AD421 for complete specifications
regarding offset tolerance. The scaling value for the mA output is programmed from the Rate
display screen. See ANALOG Scaling on page 11 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. Connection to conduit is required to maintain the enclosures explosion-proof
rating and must be made in accordance with all local and national electrical codes. MAKE
CERTAIN CIRCUITS ARE NOT LIVE WHILE WIRING RT-Ex10 IN HAZARDOUS AREA.
Keep cover tightly closed while circuits are alive.
RT-EX10
SR# RT001500
Fiber-Optic Systems (Fiber-optic input/output models only)
Fiber optic input models accept optical signals from AW Company FOP-20 or FOP-30 fiber
optic transmitters using AW Company fiber optic cable. Fiber-optic output models will transmit
a scaleable 0-100 Hz signal via fiber-optic cable to the AW Company OPTV-20 or OPTV-CM
fiber optic receiver.
FOP Fiber-optic Input/Output
RT-EX10
SR# RT001500
PIGTAIL LEADS
(LABELLED)
mA +
mA -
1/2" NPT
OPTICAL RECEIVER GROUND - 8
mA +
LOOP-POWERED
TWO-WIRE
4-20 mA OUTPUT
mA -
SQUARE WAVE SIGNAL OUT - 7
+7-20 VDC - 1
COMMON - 2
FIBER-OPTIC
CABLE
6
5
4
3
OPTV-20
OR
OPTV-CM
FROM FOP-20 OR FOP-30
AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com