Myron L PS6FCE User Manual

Page 41

E. Soft Protective Carry Cases

Padded Nylon® carrying case features a belt clip for hands-free mobility.

Two colors to choose from:

Blue - Model #: UCC

Desert Tan - Model #: UCCDT ® Registered trade mark of DuPont

F. Hard Protective Carry Cases

Large case with 2 oz. bottles of calibration standard solutions (KCl-7000,

NaCl-7500, 442-3000, 4, 7, & 10 pH buffers and pH storage solution).

Model #: PKPS

Small case (no calibration standard solutions) - Model #: UPP

G. Replacement pH/ORP Sensor

pH/ORP sensor is gel filled and features a unique porous liquid junction.

It is user-replaceable and comes with easy to follow instructions.

Model #: RPR

H. bluDock™ Wireless Data Transfer Accessory Package

This accessory allows the operator to download the P

ool

memory

stack to a spreadsheet on a computer. The package includes bluDock

modified circuit board in the unit, software CD, installation and operating

instructions, and dongle.

Model #: BLUDOCK

XIX. TEMPERATURE COMPENSATION (Tempco)

of Aqueous Solutions

Electrical conductivity indicates solution concentration and ionization

of the dissolved material. Since temperature greatly affects ionization,

conductivity measurements are temperature dependent and

are normally corrected to read what they would be at 25°C.

A. Standardized to 25°C

Conductivity is very accurately measured in the PoolPro by a method

that ignores fill level, electrolysis, electrode characteristics, etc., and

uses a microprocessor to perform temperature compensation. In simpler

instruments, conductivity values are usually assigned an average

correction similar to that of KCl solutions for correction to 25°C. The

correction to an equivalent KCl solution is a standard set by chemists

that standardizes the measurements and allows calibration with precise

KCl solutions. In the PoolPro, this correction can be set to other solutions

or tailored for special measurements or applications.

B. Tempco Variation

Most conductivity instruments use an approximation of the temperature

characteristics of solutions, perhaps even assuming a constant value.

The value for KCl is often quoted simply as 2%/°C. In fact, KCl tempco