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User's Guide
Oyster pH - Conductivity - TDS - Temperature Meters
Models
34135-A
341350
341350-P
34145A
341450
341450-P
INTRODUCTION
Congratulations on your purchase of the Extech's Oyster Series meter or meter kit. These
devices measure pH/Conductivity plus TDS or Temperature. These meters are intended for
routine laboratory and field testing. Accurate measurements are provided in a battery
operated, portable meter with a hinged display that can be adjusted to any viewing angle.
Model 34135-A measures pH, Conductivity and TDS. The 'A' indicates 'meter-only'.
Models 341350 and 341350-P are kits which include the 34135A and all the necessary
accessories. The 'P' indicates Polymer type electrode (341350 has glass electrode).
Model 34145-A measures pH, Conductivity & Temperature. 'A' indicates 'meter-only'.
Models 341450 and 341450-P are kits which include the 34145A and all the necessary
accessories. The 'P' indicates Polymer type electrode (341450 has glass electrode).
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
Visit us at www.TestEquipmentDepot.com
Back to the Extech 341350 Product Page
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
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Table of Contents
Related Manuals for Extech Instruments 34135-A
Summary of Contents for Extech Instruments 34135-A
- Page 1 Model 34135-A measures pH, Conductivity and TDS. The ‘A’ indicates ‘meter-only’. Models 341350 and 341350-P are kits which include the 34135A and all the necessary accessories.
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Page 2: Specifications
± 0.5% 10 - 19,990µS (10µS) Temperature (34145-A only) -30 to 105 ± 0.5 0.00 to 14.00pH (0.01pH) ± 0.02pH TDS (34135-A only) 10 - 19,990ppm (10ppm) ± 0.5% Auto/Manual Temperature Manual for pH/Auto for conductivity/TDS; 0-100 Compensation Correction: 2% per... -
Page 3: Operating Instructions
OPERATING INSTRUCTIONS pH Calibration Calibrate the meter and electrode before each use to ensure accuracy. Connect the pH electrode via the BNC connector to the meter. Open the meter to the fully extended position. Open the battery cover and install a 9V battery. - Page 4 Care of the Conductivity/TDS Cell To prepare the cell, remove any outer protective sheath that may be used in shipping. Cell Storage On sheathed cells, replace the sheath over the cell when storing. For non-sheathed versions, soak the cell tip in de-ionized water for storage. Cell Cleaning After each use, the cell tip should be rinsed with de-ionized water.
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Page 5: Maintenance
pH Troubleshooting Chart Symptom Cause Recommended Solution Long response Clogged Junction Soak in 4.07 M KCL @ 60 C for 30 time or reading minutes drift Strong Alkaline measurement Soak in 0.1 M HCL overnight Deteriorated Gel layer Protein coating on electrode Soak in 1 gm Pepsin dissolved in surface 100ml of 0.1 m HCL for 30 minutes or...
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