Apera Instruments 201-C User Manual (English)

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201-C pH Electrode User Manual

Brief Introduction

Apera Instruments 201-C pH Electrode is featured with a proprietary lithium glass membrane for fast

and stable readings. The gel inner reference solution does not need to be refilled. This electrode is

designed for testing in general water solutions. The electrode may NOT work well in the following

situations:

1. Long-term testing in high temperature solutions (>122°F or 50°C)

2. Frequent testing in strong alkaline (>12 pH) or acid (<2 pH) solutions

3. Testing low ionic strength solutions like distilled or deionized water

4. Testing caustic solutions that will corrode the polycarbonate housing of the electrode

Technical Specifications

Range

0 to 14 pH

Housing

Polycarbonate

Junction

Single ceramic

Reference electrode

Ag/AgCl

Reference solution

Gel KCL

Connector

BNC

Cable length

3 Ft

Dimension

ø12*160 mm

Temperature sensor

N/A

Operating temperature

32 to 176°F (0 - 80°C)

How to Install the Electrode

1. Find the BNC socket (where it shows pH ORP) on the pH meter; Open the rubber cap; Insert the

blue BNC connector of the electrode to the BNC socket while twisting clockwise until it’s locked.

2. After installing the new electrode to your meter, a 3-point calibration must be performed to ensure

the accuracy.

How to Use the Electrode

1. There is a proper amount of storage solution in the storage bottle on top of the electrode. The pH

glass sensor tip is soaked in it to keep its sensitivity.

2. Before measuring, loosen the bottle cap, then pull out the electrode while twisting

counterclockwise. Place the storage bottle at a safe position.

3. Rinse the electrode with purified water and shake off excess water or blot-dry it with clean tissue

or filter paper. Never rub the glass membrane.

Need help?

Do you have a question about the Apera Instruments 201-C and is the answer not in the manual?

Apera Instruments 201-C Specifications

General

Model	201-C
Category	Measuring Instruments
pH Resolution	0.01 pH
Conductivity Measurement Range	0 to 20.00 mS/cm
Display	LCD
Type	pH/Conductivity Meter
pH Range	0.00 to 14.00 pH
pH Accuracy	±0.01 pH
Conductivity Resolution	0.01 mS/cm
Conductivity Accuracy	±1%
Temperature Compensation	Automatic
Power Supply	4 x AAA batteries
Temperature Accuracy	±0.5°C (±1°F)
Calibration	pH: 1 to 3 points automatic calibration; Conductivity: 1 to 2 points automatic calibration