Introduction
7/99 9782 Series Conductivity/Resistivity Analyzer/Controller - Operator’s Manual 1-1
1. Introduction

1.1 Description

Multi-function instrument
The Honeywell 9782 Conductivity/Resistivity Analyzer/Controller (Figure 1-1) is a
microprocessor-based instrument for analysis of conductivity, resistivity, total dissolved solids,
or concentration in industrial processes. The resolution for all measurements is +/- 0.5% of
reading (except for temperature; see below). The units of measure are:
• conductivity: microSiemens per centimeter, microSiemens per meter, or milliSiemens per
centimeter
• resistivity: megohms or kilohms
• TDS: PPT, PPM or PPB
• concentration: percent by weight
• temperature: resolution 0.1% for 0 to 99.9 °C, and 1 C° for 100 C° and higher
User interface
An easy-to-read display provides instant access to process values. The displays of process values
show the instrument’s tagname (or other configurable text) at the top of the screen.
Every display includes an “alarm stripe”, a line dedicated to displaying process alarm messages,
status messages, and system diagnostic messages, whenever any are active. (One or more relays
can also be used for alarm annunciation; see 1.5.2.)
Dedicated-function membrane keys to the right of the display on the front panel are used to:
• cycle through the displays of real-time values
• access configuration, calibration, and maintenance menus
• change and enter setpoints and other parameters
In addition, three variable function keys are below the display. The function of each of these
“soft keys” depends on the purpose of the screen currently on display. Soft key labels are always
displayed at the bottom of the screen, immediately above the relevant function key.
Easy to configure
Menu-driven configuration is fast and easy. Only configuration parameters related to features
supported by the hardware and relevant to the specific application are displayed.