EXTECH Manuals

Extech 726/10-R1 Portable Digital Stopwatch features a large LCD display, accurate timekeeping to ±3 seconds/day, and accumulated elapsed time and split time measurements. This stopwatch also features an alarm and calendar, and can operate in either 12 or 24 hour mode.

This manual introduces the functions and usage methods of the Extech RF40 Battery/Coolant Refractometer with automatic temperature compensation.

This manual introduces how to use the Extech RF20 Handheld Salinity Refractometer

Congratulations on your purchase of the Extech RF10 or RF15 Brix Refractometer. These precision optical instruments should be handled gently and the optical surface should be avoided from touching. Careful use of these instruments will provide years of reliable service. The refractive index of a sample is measured and displayed in % Brix. The instrument has a range of 0 to 32% Brix with a resolution of 0.2%. The dimensions and weight vary for each model. The instrument requires zero adjustment and cleaning of the prism before use. To take a sample reading, a few drops of the sample liquid are placed on the measurement prism and the liquid is spread across the entire surface without air bubbles or dry spots. The sample remains on the prism for approximately 30 seconds and the sucrose concentration is determined by the intersection of the light/dark boundary observed through the eyepiece.

The Extech RF18 Brix Refractometer is a precision optical instrument that measures the refractive index of a sample, displayed as % Brix. It requires zero adjustment before use and the prism should be cleaned with a soft cloth. The sucrose concentration is determined by observing the boundary of the light and dark fields on the scale.

This document describes the features and characteristics of portable refractometers produced by Extech Instruments Corporation, including the ability to measure the concentration of sugar, salt, lubricants, antifreeze, cutting fluids, and more. The refractometers are easy to operate and provide accurate and repeatable measurements. Automatic temperature compensation models are available.

601XXX V1.3 11/01 pH electrode instruction sheet introduces the specifications of the 601100, 601500 and 60120B models, including dimensions, construction material, measuring range, temp. range, reference junction, reference type, isopotential point, precision, connector, cable length and storage container

Extech Instruments Corporation released the pH/ORP electrodes specification sheet in 2007. The product includes 60120B and 601500 two types of pH/Ref electrodes and 601100 one type of Flat surface electrode, as well as 67500B one type of Redox ORP/Ref electrode. All electrodes use Ag/AgCl electrode filling method, fast response time, response rate is 95%/5s. The 60120B and 601500 two types of electrodes use a rugged polycarbonate structure and are equipped with a glass pH sensor. The pH range is 0 to 14 pH, and the operating temperature is 0 to 80 °C. The 601100 electrode uses a PVC structure and is suitable for pH values of solid products with minimal moisture, such as cheese, soil or electrophoretic/agar gels. The 67500B electrode uses a platinum sensing surface, a polycarbonate body and a sealed reference, which can be used for Redox ORP measurements.

The DO700 is a digital dissolved oxygen, conductivity, TDS and pH meter. It can measure dissolved oxygen, conductivity, pH, mV and temperature parameters. Conductivity measurements also yield TDS (total dissolved solids), Salinity, and Resistivity readings. The built-in microprocessor provides automatic calibration, automatic temperature compensation, data storage, and self-diagnostics. The digital filter improves measurement speed and accuracy. The meter offers a backlit LCD display and is dust-proof and waterproof, meeting IP57. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.

Extech DO700 is a 9-in-1 portable dissolved oxygen meter that measures dissolved oxygen concentration/saturation, pH, mV, conductivity, TDS, salinity, resistivity and temperature. It features automatic salinity compensation and manual barometric pressure compensation for DO measurements.

The ExStik DO600 Dissolved Oxygen / Temperature Meter simultaneously displays dissolved oxygen and temperature. Units of measure are % saturation, mg/l or ppm for dissolved oxygen, and °C or °F for temperature. Advanced features include Data Hold, 25 points memory, auto power off, automatic temperature compensation, salinity and altitude compensation. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.

This document describes the features and characteristics of the waterproof ExStik® II Dissolved Oxygen Meter/Kit produced by Extech Instruments Corporation, including easy-to-replace screw-on membrane cap, extension cable, and weighted probe guard for measurement versatility in various environments.

This manual introduces the features and functions of Extech's heavy duty dissolved oxygen/temperature meter 407510. The product can simultaneously display dissolved oxygen or oxygen content in air, and temperature. Units are mg/l for Dissolved Oxygen, % for Oxygen in air, and oC/ oF for temperature. Oxygen is measured with a remote sensor that also contains a thermistor for measuring temperature. Advanced features include RS 232 PC serial interface, data hold, auto shut off, and Min/Max/Avg recording.

Extech Heavy Duty Dissolved Oxygen Meter can measure dissolved oxygen concentration and temperature, and has a built-in RS-232 PC interface for data acquisition and datalogging applications.

The model FL700 is a system specifically designed for the quick and accurate measurement of fluoride ions in drinking water and other aqueous samples. Unlike other electrode based systems the FL700 consists of the sensing electrode, measuring electronics, and the display in one convenient package.