Dwyer Instruments RVM Specifications-Installation And Operating Instructions

The Model RVM Portable Radar Wave Velocity Meter uses Doppler Radar
technology to accurately measure surface velocity of open channel flow. The
"point-and-shoot" design along with automatic vertical angle compensation
provides easy to use operation. Model RVM also has user-adjustable horizontal
angle compensation of 5° increments to further reduce measurement error. Flow
velocity can be measured bi-directionally with user-selectable directional modes
(flows away, towards, or both in direction). Model RVM features a backlit LCD that
indicates flow velocity in feet per second or meters per second. Model RVM
includes the meter, rechargeable batteries, 12 VDC car charger, and a rugged
case.
*Wireless Guidelines in Accordance with FCC:
Changes not expressly approved by Dwyer Instruments, Inc. could void the user's
authority to operate the equipment.
This product complies with FCC OET Bulletin 65 radiation exposure limits set forth
for an uncontrolled environment.
Pursuant to FCC 15.21 of the FCC rules, changes not expressly approved by
Dwyer Instruments, Inc. might cause harmful interference and void the FCC
authorization to operate this product.
Canadian Government Guidelines:
Operation is subject to the following two conditions: (1) This device may not cause
harmful interference and (2) this device must accept any interference received,
including interference that may cause undesired operation.
INFORMATION TO THE USER
Power Output: 7 mW nominal.
Power Density: ≤ 1 m/W/cm.
Operating Frequency: 24.150 GHz nominal (K band).
Beam Width: 12° nominal.
Polarization: Linear.
Power Density: ≤ 1 m/W/cm.
NOTICE • Do not over voltage the radar velocity meter - it can damage
the unit! See notes.
• If battery replacement is necessary, all 6 batteries should be replaced with new
batteries even if only one cell is suspected to be defective.
• Use rechargeable Nickel-Metal-Hydride batteries only.
• Model RVM is designed to operate off of conventional +12 VDC (+10.8 to +16.5
VDC) from the power cable. In addition, it is also designed to operate at 7.2 VDC
from the internal batteries. Over voltage to the power cables or incorrect batteries
can cause damage.
• Do not expose Model RVM to excessive moisture. Never submerge the device. If
the device should accidently get submerged, remove the batteries immediately.
• Do not drop Model RVM on hard surfaces since damage could occur.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Model RVM Portable Radar Wave Velocity Meter
Specifications - Installation and Operating Instructions
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SPECIFICATIONS
Service: Water.
Range: 0.1 to 43 FPS (0.3 to 13 m/s).
Display: Single-line, 5-digit, backlit LCD.
Accuracy: ±5%.
Power Requirements: 6.1 to 8 VDC, (6) 1.2 V rechargeable AA NiMH batteries,
installed and functional, user replaceable (12 VDC lighter plug power cable
included).
Power Consumption: 0.18 A max.
Serial Communications: RS232.
Temperature Limits: -22 to 158°F (-30 to 70°C).
Enclosure Rating: IP55.
Humidity Limit: 90% RH @ 98.6°F (37°C).
Enclosure Material: ABS polycarbonate blend.
Angle Compensation:
Vertical: automatic via tilt sensor;
Horizontal: adjustable from 0 to 60° in 5° increments for cosine angle error.
Weight: 2.1 lb (907 g).
Agency Approvals: *FCC compliance.
Phone: 219/879-8000
Fax: 219/872-9057
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www.dwyer-inst.com
e-mail: info@dwyermail.com