Introduction; General - ABB CK-MAG 10D1477 Instruction Manual

10D1477 MAGNETIC FLOWMETER INSTRUCTION MANUAL

1.0 INTRODUCTION

1.1 General

The series 10D1477 CK-MAG Magnetic Flowmeter is an electro-magnetic liquid flow rate detector.
The meter uses the characteristics of a conductive liquid to generate an induced signal voltage,
directly proportional to flow rate, as the liquid passes capacitively coupled measuring electrodes. The
resultant voltage is applied to a solid state electronics package that conditions it to an output signal
compatible with conventional receiving equipment.
The standard meter design provides a compact, very low power, obstructionless primary metering
element that bolts between flanges in a process pipeline. Pressure losses in this type of meter are
reduced to levels occurring in equivalent lengths of equal diameter pipeline, thus reducing or
conserving pressure source requirements as compared to other metering methods. The compact size
of the meter results in a light-weight unit that requires no additional support other than that normally
used on pipe runs.
The Series 10D1477 CK-MAG complies with 3-A Sanitary Standards For Flowmeters For Milk and
Milk Products, Number 28-03*. As an option, for 3-A Sanitary applications, the CK-MAG can be
®
supplied with TRI-CLAMP sanitary adaptors for connection to the customer's sanitary tubing
system.
This Flowmeter can be used to meter either clean or dirty liquids. The meter may be used without
regard to the heterogeneous consistency of the measured liquid and is as independent of the
tendency to plug or foul as the pipeline in which it is mounted. By design, the ceramic spool of the
meter body is wetted (electrodes are non-wetted). This design will accommodate most acids, bases,
water and aqueous solutions.
Viscosity and density of the metered liquid have no effect on the measurement accuracy of the meter
and, therefore, signal compensation is not required. Metering limitations are confined to a minimum
threshold of electrical conductivity inherent to the liquid being metered. The degree of liquid conduc-
tivity has no effect upon the metering accuracy (as long as it is greater than the minimum level). The
liquid temperature and pressure are limited to the meter material specification limit.
The meter body is a sealed section that bolts between the customer's pipe line flanges. The
measuring electrodes are encased behind the metering tube. For accurate results, the meter bore
diameter must be centered in the pipeline. For the larger size meters, spacer sleeves are slipped
over the flange mounting bolts. The smaller size meters use a unique centering device to center the
meter. The centering device is shown in Figure 2-6.
* 3-A Sanitary Standards are formulated by the International Association of Food Industry Suppliers (IAFIS), the International
Association for Food Protection (IAFP), the United States Public Health Service (USPHS) and the Dairy Industry Committee
(DIC). The 3-A Sanitary Standards, Inc. Administrative Council verifies compliance to these standards and authorizes the
use of the 3-A Symbol.
1-1