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Thermo Scientific  

Orion Star

 LogR Meter 

Quick Start Guide

Preparation  

1.  Power adapter - Select the appropriate wall socket plug and slide the plug 

plate into the groove on the back of the adapter. 

See A

.

  Batteries - Select four AA Alkaline batteries. Confirm that the meter is powered 

off and remove the battery cover. Orient and insert the batteries as depicted in 

the battery compartment housing. Replace the cover. 

See B

.

2.  Prepare the electrode according to the directions in the electrode instruction 

manual. In general, these steps include:
•  Gently remove the protective cap from the sensing element and save for 

storage.

•  For refillable electrode, remove the fill hole cover and fill the electrode with 

the appropriate fill solution. 

See C

.

•  Soak the electrode in the storage solution specified in the electrode 

instruction manual. 

See D

3.  Meter connections - Connect the power adapter to the meter and then to the 

wall socket. 

See E

. Connect the ISE electrode to the BNC input on the meter. 

See F

. Connect the stir probe to the stir jack input on the meter. 

See G

.

  NOTE:  

Make sure that all unused inputs on the meter are covered with the 

black caps. 

Meter Overview

1.  To power on the meter, press the 

 key 

2.  In the measurement screen, press the

 

 

key to change the value on the top 

display line to: 
i.  pH, RmV, mV, temperature or a blank line 
ii.   pH, RmV, mV, ISE, temperature or a blank line for the Cat. No. 3115000.

3.  To escape out of any meter function, press and hold the 

 key until the 

meter returns to the measurement mode.

4.  The middle display line is only active when the LogR setting is in use. Press 

the 

 to choose the top or middle display line. The   will point to the 

selected line. When the middle line is selected, press the

 

 

key to show the 

resistance of the glass pH bulb or to show a blank line.

A

B

C

D

E

F

G

Key Description 

power

up arrow

line select

view log

calibrate

down arrow

setup

stir

measure

digits

Meter Connections

For the complete Orion Star

 LogR™ User’s Guide visit www.thermo.com/water

Stirrer Jack  

DO AUTO-STIR 

or Stir Probe

Pin Tip 

Reference

BNC 

pH/ISE

8 Pin MiniDIN 

ATC

RS232

Ground

Power

264906-001   RevA

QS-LogR-E   0110

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