THE JENWAY RANGE OF CONDUCTIVITY METERS

• The Model 430 pH, Conductivity/TDS and temperature Meter provides a portable means of determining the pH, conductivity or TDS of a wide range of industrial or environmental samples. The instrument features an innovative new combined pH and conductivity probe assembly with an integral ATC sensor.

• The Model 470 Conductivity/TDS Meter provides a portable means of determining the conductivity or TDS of a wide range of industrial or environmental samples. One of six measurement ranges (3 x conductivity, 3 x TDS) can be selected to get the best resolution of the sample under test. All results are automatically temperature compensated.

• The Model 4200 Premier Portable Conductivity Meter measures between 0 and 199.9mS, covered by five automatically switched ranges using a single cell. In-built consumables is able to calculate and report results as Total Dissolved Solids in mg/l, Salinity in g/l or Resistivity in MOhms. A "pure water" mode enacts the non-linear temperature coefficient characteristics associated with low conductivity water.

• The new Model 4510 Laboratory Conductivity Meter is designed for routine analytical laboratory situations. Simultaneous display of conductivity/TDS and temperature are available on the custom liquid crystal display. Calibration and result verification is possible by reference to standard calibration values.

• The new Model 4520 Laboratory Conductivity Meter features a back-lit 1/8 VGA monochrome liquid crystal display. On-line "HELP" menus provide assistance when using this model. Conductivity values can be displayed in a selection of units suitable for the particular sample under test; Siemens for routine requirements, MOhms for samples with low conductivity (such as purified water) and Total Dissolved Solids relating conductivity to the concentration of NaCl. A salinity mode displays conductivity results in ppm NaCl. The meter supports 1, 2 or 3 point conductivity calibration.

• The new GLP compliant Model 3540, a combined pH / Conductivity Meter is also available. The Model 3540 features simultaneous measurement of both pH and Conductivity with no electrical interference between sensors.

Below is a brief summary of the key specification differences between the Conductivity Meters available. Full specification details can be found by following the link to the instruments individual page.

Model	430	470	4150	4200	4510	4520
Style	Portable	Portable	Portable	Portable	Laboratory	Laboratory
Display	Back-lit LCD	Back-lit LCD	Custom Segment LCD	114 x 128 graphics LCD	Custom back-lit LCD	Back-lit 1/8 VGA monochrome LCD
Conductivity
Ranges	0 - 19.99µS 0 - 199.9µS 0 - 1999µS 0 - 19.99mS 0 - 199.9mS	0 - 19.99µS 0 - 199.9µS 0 - 1999µS 0 - 19.99mS 0 - 199.9mS 0 - 1999mS	5 switched ranges 0 - 199.9mS	5 switched ranges 0 - 199.9mS	0 to 19.99µS 0 to 199.9µS 0 to 1999µS 0 to 19.99mS 0 to 199.9mS 0 to 1999mS	0 to 19.99µS 0 to 199.9µS 0 to 1999µS 0 to 19.99mS 0 to 199.9mS 0 to 1999mS 0 to 19.99S
Resolution	0.01µS 0.1µS 1µS 0.01mS 0.1mS	0.01µS 0.1µS 1µS 0.01mS 0.1mS 1mS* * only with cell constant >5	0.1mS 0.01mS 1µS 0.1µS 0.01µS	0.1mS 0.01mS 0.001mS 0.1µS 0.01µS	0.01µS 0.1µS 1µS 0.01mS 0.1mS 1mS	0.01µS 0.1µS 1µS 0.01mS 0.1mS 1mS 0.01S
Accuracy	±0.5% ±2 digits	±0.5% ±2 digits	±0.5% ±2digits	±0.5% ±2digits	±0.5% ±2digits	±0.5% ±2digits
Salinity
Range	0 - 19.99mg/l 0 - 199.9mg/l 0 - 1999mg/l 0 - 19.99g/l 0 - 199.9g/l	0 - 19.99mg/l 0 - 199.9mg/l 0 - 1999mg/l 0 - 19.99g/l 0 - 199.9g/l 0 - 1999g/l	-	0 - 99.9g/l	0 - 19.99mg/l 0 - 199.9mg/l 0 - 1999mg/l 0 - 19.99g/l 0 - 199.9g/l 0 - 1999g/l	0 - 19.99mg/l 0 - 199.9mg/l 0 - 1999mg/l 0 - 19.99g/l 0 - 199.9g/l 0 - 1999g/l
Resolution	0.01mg/l 0.1mg/l 1mg/l 0.01g/l 0.1g/l	0.01mg/l 0.1mg/l 1mg/l 0.01g/l 0.1g/l 1g/l* * only with cell constant >5	-	0.1g/l	0.01mg/l 0.1mg/l 1mg/l 0.01g/l 0.1g/l 1g/l* * only with cell constant >5	0.01mg/l 0.1mg/l 1mg/l 0.01g/l 0.1g/l 1g/l* * only with cell constant >5
Accuracy	±0.5% ±2 digits	±0.5% ±2 digits	-	0 to 35 ±1 35 to 99.9 ±3 of reading	±0.5% ±2 digits	±0.5% ±2 digits
Power	2 AA Cells	2 AA Cells	3 AA Cells	3 AA Cells	9V AC PSU	9V AC PSU
Internal Clock	-	-	-	Yes	-	Yes
Datalogging	-	-	-	100 results	32 results	512 results
Dimensions	175 x 75 x 35mm	175 x 75 x 35mm	200 x 80 x 60mm	200 x 80 x 60mm	250 x 210 x 50mm	250 x 210 x 50mm
Weight	250g	250g	370g	370g	850g	850g