AW Gear Meters RT-Ex15-Ex - Manual (Page 3)

AW-Lake Company 8809 Industrial Drive, Franksville, WI 53126  web: www.awgearmeters.com
 Tel: 262-884-9800  Fax: 262-884-9810  Email: [email protected]
RT-Ex15-Ex manual rev 6.13.11.docx Revision 3.3.10
3
Introduction / Features
The RT-Ex15-Ex is a meter-mounted digital flow monitor that is certified for use in Class I
Div. 1 locations when mounted on an approved AW meter. A large, back-lighted LCD
graphic display provides easy to read indication of flow rate or total in user programmable
engineering units. Programming, display mode selection or reset of the totalizer is
accomplished using an attached magnet without opening the enclosure or using the
pushbuttons on the faceplate with cover off. An isolated input also allows for remote reset of
the totalizer. Programmable opto-isolated NPN open-collector outputs provide flowrate limit
indication or a pulsed total output for remote monitoring and recording of totals. A 4-20 mA
rate output with user programmable filtering and scaling is also provided for remote
indication. A variety of sensor noses are available to provide compatibility with all AW Gear
Meters.
RT-Ex15-Ex options:
Swivel union available
HART protocol available
Specifications
RT-Ex15-Ex Dimensions
Power Requirement: (Customer supplied)
Class 2, 24 VDC, 200mA min
Sensor/Monitor Frequency Range:
0-4000 Hz.
Analog Output 4-20 mA:
16-bit Isolated Loop Powered 2-Wire Output.
24 Vdc Loop Supply
Max. Load Impedance 500 Ohm.@ 24V
Max. Load Impedance 250 Ohm.@ 12V
Two Opto-Isolated Open-Collector Outputs:
5-24 VDC Rating, 50 mA Max. (Minimum Load
Impedance Required, 480 Ohm @ 24 VDC)
Opto-Isolated Reset Input:
5-24 VDC Input, 3.3Kohm Impedance
Temperature Ratings:
Unit: -40 to 60ºC (-40 to 140ºF) Ambient : T6
60ºC (140ºF) Max. Fluid Temperature
RT-Ex15-Ex Certifications:
CSA:
Class I, Division 1, Groups A, B, C, D
Class II, Groups E, F, G; Class III
Connection:
Screw terminal strips
¾” NPT Conduit Entrance
Input and output signals to be supplied by a Class 2
power supply