Instruction Manual
Tek-DP 1650A
www.tek-trol.com
Technology Solutions
4
1.4.3
Storage
If this product is to be stored for a long period of time before installation, take the following
precautions:
•
Store your product in the manufacturer’s original packing used for shipping.
•
Storage location should conform to the following requirements:
1. Free from rain and water
2. Free from vibration and impact shock
3. At room temperature with minimal temperature and humidity variation
•
Before storing a used flowmeter remove any fluid from the flowmeter line completely.
Properties of the instrument can change when stored outdoors.
1.4.4
Nameplate
The nameplate lists the order number and other important information, such as design details
and technical data.
NOTE
Check the device nameplate to ensure that the device is delivered according to your
order. Check for the correct supply voltage printed on the nameplate.
2
Product Description
This section covers the reference and specification data, as well as ordering information.
2.1
Introduction
The Tek-DP 1650A DProbar Multiport Self-Averaging Flow Meter functions as an obstruction that
changes the cross-section of the flow of the liquid in the pipe or conduit. In a differential pressure
flow meter, as the liquid passes through the obstruction, its potential energy is converted into
kinetic energy. The velocity of the liquid increases and is accompanied by a simultaneous decrease
in the pressure. When the liquid exits the obstruction, the velocity decreases, and the pressure
increases again. These pressure drops generated across the obstacle are proportional to the flow
rate square and calculated using Bernoulli's equation.
2.2
Measuring Principle
While the Tek-DP 1650A DProbar measures the pressure of a liquid at a single point, the more
modern averaging Tek-DP 1650A DProbar measures the average pressure by taking sample values
at different points in the pipe. It is inserted directly into the pipe and is perpendicular to the
direction of flow. The side of the tube facing the flow of the liquid consists of several impact
pressure ports while the opposite side of the tube may have a single or multiple static pressure
ports. These ports are connected together to a secondary device such as a differential pressure
transmitter.
When the liquid comes in contact with the tube, the kinetic energy of the liquid is converted into
potential energy and velocity is reduced to zero. The pressure now measured at the upstream
ports is called the total impact pressure, which is the sum of the static pressure and the dynamic
