Omega Engineering manual Part ONE Introduction General Information, CDE681 Part 1 Introduction

M3594-0603-CDE681Series.qxd 7/17/03 2:14 PM Page 1 m

CDE681 Part 1 - Introduction

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PART ONE - INTRODUCTION

SECTION 1 - GENERAL INFORMATION

1.1 Description

Benefits of Enhanced Performance Design

CDE681-series compression fitting style sensors are manufactured to exacting tolerances using high quality, rugged materials for demanding ultrapure water and pure water applications. Each sensor is:

??Individually tested to determine its absolute cell constant (shown on its label

as K = ), and its temperature element value (to the nearest 1.0 ohm). Entering

each sensor’ OMEGA-certified “K” value and temperature “T” factor during instrument configuration or calibration, ensures the highest possible

measurement accuracy

??Built with a Pt 1000 RTD temperature element located at its tip to provide exceptionally fast response to changes in temperature with high measuring accuracy (* 0.2”C).

	Compatible Meters
	These sensors are for use with the CDCN684, CDCN685, CDCN686 Analyzers
	and CDTX680 Series transmitters only.
	Sensor Characteristics
,	Basic Cell Constant:	0.05,0.5,1.0,5.0,	or 10.

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Installation Style: For sensors with a 0.05 cell constant, use K-inch or %-inch male NPT compression fittings made of Kynar (PVDF) or 316 stainless steel. For sensors with any other cell constant, use a %-inch male NPT compression fitting made of Kynar or 316 stainless steel. In all cases, the fitting enables the sensor to be insertion mounted, up to 4 inches/ 102 mm deep, into a pipe tee or vessel. Reversing the fitting enables the sensor to be fastened onto the end of a pipe for immersion mounting.

Termination Style: An integral 6 m (20 ft.) long cable

1.2Operating Procedures

Always consider the temperature/pressure ratings of the mounting hardware used to install the sensor. The sensor and hardware combination is an integrated system. The hardware material usually limits the system ’s temperature/pressure rating. Refer to Section 2 for complete specifications.