Bench Conductivity/pH Meter Kit (230VAC, EU Power Supply)
The 3540 is ideal for use in all laboratories where pH and conductivity analyses are required. The setup menu gives quick and easy access to the whole range of instrument, pH and conductivity measurement options. The model 3540 has a high specification and a comprehensive range of features and functions. Calibration of both channels is automatic, with the option to select 1, 2 or 3 calibration points. The pH channel can also display mV values if required.
The model 3540 pH/conductivity meter is a dual channel, dual readout instrument that displays both pH and conductivity values simultaneously. The model 3540 is designed to show both readings in real time and eliminates cross channel interference, as well as the need to either switch manually or automatically between measurements. The design also enables both dual channel and independent single channel operation. Predictive Selection simplifies operation by taking you directly to the screen relevant to your current task. The unit enables pH measurements to be made with a 1, 2 or 3 decimal place resolution against a 1, 2 or 3 point calibration. Automatic calibration can be carried out against standard NIST, DIN, JIS or Jenway buffers. Alternative values can be entered and stored for semiautomatic operation. The pH channel can also display Absolute and Relative mV values to 0.1mV resolution, enabling Redox/ORP and simple ISE measurement to be made.
The conductivity channel is auto ranging from 0.01µS up to 19.99S (with x10 probe). This eliminates the need for manual range selection across this wide measuring range. Reference temperatures of 18, 20 and 25°C are offered, along with a temperature coefficient that can be varied from 0% (off) up to 4% per degree Celsius. Three calibration methods can be employed: automatic recognition of common conductivity calibration standards, semiautomatic calibration against manually entered values within the measuring range or, a simple calibration against the quoted cell constant (K factor) for the probe being used. The conductivity channel can also be set to readout in Resistivity, Salinity or TDS values.
Configuring the instrument to your ideal options is easily achieved using the clear and simple set up menus. Once entered, these options can be locked against inadvertent change by entering a Supervisor Security Code. GLP functions include user and sample batch identity, calibration reminder, security set up and date/time stamping of results. Data logging and alarm functions are also included. Results can be stored to the internal memory (250 pH and 250 conductivity readings) or output via the RS232 serial port to a printer or computer. This storage or output function can be triggered manually by pressing the Store key, or be set on a timed basis. It can also be triggered when a sample reading reaches stability, or on the activation and reset of any alarm level.