pHb-300 Series Benchtop pH Meters - Discontinued

PHB-320

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Benchtop meter for pH/mv/temperature
Accuracy +/- 0.02 pH

商品説明

The PHB-300 Series has been discontinued. Please see the PHB-600R as a possible alternative or contact our Flow Engineering Department.

OMEGA’s Model PHB-305 pH meter offers a straightforward and traditional approach to pH measurement while utilizing modern technology to enhance accuracy and reliability. This product provides all features essential for pH and associated measurements. Mode selection and adjustment is by front panel rotary controls, which, together with a large 25 mm (1") liquid crystal display, provides a clear indication of instrument status. This is particularly useful in the educational sector or in any laboratory seeking a low cost analytical instrument. The Model PHB-305 can also be used as a signal voltmeter, which enables the determination of Redox (ORP) potentials or simple ion analysis. The unit gives an accurate readout of temperature and automatically compensates the pH electrode response for temperature variations (ATC). An analog output gives a buffered electrode potential. Connection is via two 4 mm sockets. The Model PHB-310 pH meter is ideal for use in any busy laboratory. Ease of use and economical pricing combine to make this unit the first choice for many routine operations. A custom liquid crystal display enables simultaneous readout of pH (or mV) and temperature. Mode indication, prompts and error messages are presented in an easily read format. A simple control panel, used in conjunction with the display, ensures that even inexperienced operators can achieve reliable results. All user defined parameters are stored in non-volatile memory, and are therefore retained for immediate recall even after prolonged power disconnection. Calibration routines are push button initiated, and the buffer recognition facility automatically identifies and sets to the appropriate temperature corrected calibration values (unless manually overridden). If an anomaly is encountered during the calibration process, an explicit error message is displayed. Sensor response can be displayed in millivolts for Redox (ORP) or ion selective measurements. The mV reading can be given in absolute terms, or the absolute value can be offset to zero to enable a relative, change to be easily tracked. An endpoint detection icon indicates when readings have reached a steady state. Temperature measurement is displayed and used for automatic temperature compensation to correct for changes in electrode response due to variations in temperature. Manual temperature value can be entered, if desired. The PHB-310 can download directly to a computer or printer via its bi-directional RS-232 link, providing an analog output for connection to a chart recorder or datalogger. The Model PHB-320 is a research grade pH meter offering a host of valuable features but retaining simplicity of operation. The LCD graphics display enables unambiguous readout of measured parameters and also prompts the user with plain language instructions. Structured menus allow easy access to features with single keystrokes. Appropriate error messages are also displayed. Temperature measurements shown include compensation for the effects of temperature on the pH electrode. The unit is programmed to automatically recognize 2.00, 4.00, 7.00, 9.22 and 10.05 calibration buffers and to compensate calibration values for the associated temperature characteristics. User-defined buffer values can also be entered manually. The instrument will provide a choice of 1-, 2- or 3-point calibration. In addition, the electrode slope can be monitored and displayed. Although primarily intended for pH determination, the Model PHB-320 is also capable of displaying sensor output in millivolts, allowing use of Ion Selective Electrodes and determination of Redox (ORP) potentials. The mV reading can be given in absolute terms or can be offset so that any relative changes can easily be tracked. The unit features a 100 memory location data-logging facility which enables storage of results. Subsequent recall of individual or multiple results made to displayed or downloaded to a printer or PC via the bi-directional RS-232 link. Logged results are stored in non-volatile memory. A real-time clock permanently displays either day, month and year or hours, minutes and seconds, thus satisfying the requirements of Good Laboratory Practices (GLP) quality assurance protocols. All logged results and calibration routines are time-stamped. User programmable options include the ability to prompt calibration or measurement at pre-determined intervals, and setting alarm points which are activated when measured parameters fall outside preset limits. A printout of a typical result along with the necessary GLP is shown. A polarized Karl Fischer output is provided. Karl Fischer titrations are made possible by the provision of a 10 mA polarizing current output.