1. Introduction
1.1 Preface
.
The
NCM-603
is based on clamp-on transit-time flow measurement principle. It measures the
flow rate of liquid in a pipe from outside of the pipe by using a pair of ultrasonic transducers. In
general, the liquid should be full in the pipe, and should contain very little particles or bubbles.
Examples of applicable liquids are: water (hot water, chill water, city water, sea water, etc.);
sewage; oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.); chemicals (alcohol, acids, etc.);
waste; beverage and liquid food; solvents and other liquids.
Due to the nature of the clamp-on technique, the transducer installation is simple and
no special skills or tools are required. Besides, there is no pressure drop, no moving parts,
no leaks and no contamination.
The
NCM-603
utilizes our proprietary technologies such as advanced signal processing, low-
voltage transmitting, small signal receiving with self-adaptation, etc. It also incorporates the latest
surface-mounting semiconductors and mini PCB design techniques. The built-in rechargeable Ni-
H battery can work continuously for more than 8 hours without recharge.
The
NCM-603
also has a built-in data-logger, which allows storage of 2,000 lines of data. The
stored information can be downloaded to a PC through its RS232 connection port with PC
software or Windows HyperTerminal software. The
NCM-603
also provides digital output such
as frequency output and pulsed totalizer output.
§1.2 Features
* ±0.5%
of
linearity
* Accuracy: ±1% of reading in velocity, plus ±0.03ft/s (10mm/s)
* Bi-directional measurement
* 4 flow totalizers
* Proprietary low-voltage transmission technology
* Wide pipe size range (
2
” ~
28
”)
* Built-in data-logger
* Clamp-on transducer. Easy to install and to maintain
* Optional flow-cell transducer or insertion transducer available for excellent long-term
stability and high accuracy demand
* Lightweight, portable (Main unit 1.2lbs)
* USB interface to computer for easy data download
* PC software
7