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Electrochemical Instruments
Jenway Model 3540 Laboratory pH/Conductivity Meter
MAIN FEATURES and BENEFITS
Ideal for quality control and GLP applications
Simultaneous display of pH and Conductivity
Tabbed display screens with set-up menu options
Built in data logger with auto save / print functions
Additional modes for Resistivity, Salinity and TDS
Automatic or manual calibration options
Two independent channels (e.g; pH and / or Conductivity)
Analogue (1mV per digit) and Alarm outputs (open collector and audible)
Wall mounting option
The Model 3540 is ideal for use in water testing applications and in all laboratories where pH and conductivity analysis is required. It offers a space saving and flexible approach to the measurement of these two parameters.
The bright back lit LCD has five separate tabbed screens, each accessed with the simple navigation keys. The set-up menu gives quick and easy access to the wide range of instrument, pH and conductivity measurement options.
Calibration of both the pH and conductivity channels is automatic, with the option to select 1, 2 or 3 calibration points for each. Automatically recognised pH buffers conforming to the NIST, DIN and JIS standards can be over-ridden by manually entered values, as can the 4 automatically recognised conductivity standards. An option to calibrate the conductivity channel to a cell constant is also included for quick and simple conductivity measurements.
The conductivity channel has a special ultra-pure water function which enables the ideal temperature compensation algorithm for this exacting application. Other modes of operation enable Resistivity, Salinity and TDS measurement. The pH channel can also display mV values to 0.1mV resolution, enabling ORP / Redox measurements to be made.
The in-built data logger can store up to 250 pH and conductivity readings based on manual or automatically timed triggers, as well as from stability and alarm status. Logged results can either be sent to the internal memory or via the RS232 serial port to the optional printer. The comprehensive GLP functions include calibration reminders and status tracking, operator and sample ID management and a supervisor security code for all set-up options.
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pH Range |
-2.000 to +20.000 pH |
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pH Resolution |
0.001 / 0.01 / 0.1 pH |
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pH Accuracy |
± 0.003 pH |
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pH Calibration |
1, 2 or 3 point |
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Auto pH Buffer Recognition |
Jenway, NIST, DIN, JIS |
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Manual pH Buffer Recognition |
Any value entered within the range |
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Automatic Temperature Compensation Range |
0 to 100°C / 32 to 212°F |
|
Manual Temperature Compensation Range |
0 to 100°C / 32 to 212°F |
|
mV Range (Absolute or Relative) |
-1999.9 to +1999.9 mV |
|
mV Resolution |
0.1 / 1.0 mV |
|
mV Accuracy |
± 0.2 mV |
|
Input Impedance |
>1012 ohms |
|
Conductivity Ranges |
Auto ranging from 0.01µS to 1.999S (19.99S with x10 probe) |
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Conductivity Resolution |
0.01µS to 1mS (0.01S with x10 probe) |
|
Conductivity Accuracy |
± 0.5% ±2 digits |
|
Conductivity Calibration |
1, 2 or 3 point |
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Auto Conductivity Standard Recognition |
10µS, 84µS, 1413µS and 12.88mS |
|
Manual Conductivity Standard Recognition |
Any value entered within the range or by cell constant value |
|
Reference Temperature |
18, 20 and 25°C |
|
Temperature Coefficient |
0 (off) to 4% per °C |
|
Temperature Range (for each channel) |
-10 to +105°C / 14 to 221°F |
|
Temperature Resolution |
0.1°C / 1°F |
|
Temperature Accuracy |
± 0.5°C / ± 1°F |
|
Outputs |
Analogue, RS232, IrDA printer interface and Alarms |
|
Clock |
24 hours, hrs/min/sec or day of month/month/year, leap year corrected (European and American formats) |
|
Memory |
250 readings - pH and Conductivity |
|
GLP |
Calibration reminder interval (1 to 999 hours) Operator and sample ID Alarm outputs (open collector and audible) Security code protected user data |
|
Display |
Back-lit 1/8 VGA monochrome liquid crystal display |
|
Power |
9V AC from 230 or 110V mains adapter |
|
Size |
250(l) x 210(w) x 55(d) mm |
|
Weight |
850g |
| 354 001 | Model 3540 supplied with glass bodied combination pH electrode (924 005), ATC probe, glass conductivity probe with ATC (K=1), electrode stand, BNC shorting plug, power supply (UK), pH 4, 7 and 10 buffer sachets and operators instruction manual |
| 354 101 | Model 3540 supplied as above with US power supply |
| 354 201 | Model 3540 supplied as above with European power supply |
| 354 301 | Model 3540 supplied as above with 230V leaded power supply |
