The Model 3205 pH/Ion Meter

	Totally waterproof system rated to IP67
	Capable of all ion analysis
	1-5 point ion/1-3 point pH calibration
	RS232 interface using optional cradle
	Auto buffer recognition (with manual override)
	100 hours operation with auto shut down
	Multi-lingual operation (6 languages)

The Model 3205 Ion Meter is designed and constructed to resist the harshest of field, laboratory and industrial environments. The whole system is waterproof to IP67, and if dropped into water will float. The Model 3205 and its associated accessories provide a system which is dedicated to the rapid, easy and reliable determinations of five ions, (ammonium, calcium, chloride, fluoride and nitrate), which are of particular interest to those involved in water analysis and environmental testing. Additional ions can be measured as millivolt readings.

The instrument software guides the user through calibration and measurement routines via the menu based operating system and provides a direct readout of results in concentration units chosen by the user. Concentration levels of the 5 dedicated ions can be displayed as mg/l, ppm, %, moles, activity and none.

Key difficulties associated with portable ion analysis are the errors introduced when the temperature of calibration standards are at a different temperature to the solution under test. The combination electrodes offered have very predictable temperature characteristics and it has been possible to incorporate automatic temperature compensation algorithms into the software. The appropriate ATC parameters are automatically selected when a dedicated ion analysis mode is selected. This characteristic, in conjunction with very stable electrode signals, enables calibration to take place in the laboratory prior to field analysis. It is possible to use the 3205 with other commercially available ion selective electrodes, but these benefits will not be available.

Power is provided by 3AA size batteries giving typically 100 hours of use. An operator selectable auto shut-off feature ensures battery life is maximized. Automatic low battery warning is given when remaining battery life is approximately 5 hours (@ 20°C).

High quality waterproof connectors (to IP67) allow rapid interchangeability of electrodes, whilst maintaining waterproof integrity. The connector incorporates a locking ring to guard against accidental disconnection or ingress of moisture.

Whilst customized for dedicated ion analysis, the 3205 also retains the capability for routine determinations of pH, mV and other non-dedicated ions.

Model 3205 Specifications

pH Range (1 or 2 point cal)	-2.00 to 16.00pH
Resolution (Accuracy)	0.01pH (± 0.02pH)
mV (Abs & Rel) range	±1999mV
Resolution (Accuracy)	1mV (±1mV)
Temperature Ranges	-10 to +105°C / 14 to 221°F
Resolution (Accuracy)	0.1°C/1°F (±0.5°C/±1°F)
ATC Range	0 to 100°C
Auto Buffer Recognition	4.00, 7.00, & 10.05 (manual override)
Calibration (pH)	User selectable 1 or 2 point
Calibration (Ion)	Multipoint 1 to 5 points
Activity	1x10^-9 to 9.99x10⁹ (integer or exponential)
Concentration units	activity, %, ppm, mg/l, moles & none
Dedicated Ion	Ammonium, Calcium, Chloride, Fluoride & Nitrate
Clock	24 hours, hrs/min/sec or day of month/month/year, leap year corrected
Power	3 AA Cells (included)
Size	200(l) x 80(w) x 60(d) mm
Weight	370g

Model 3205 Order Codes

539 501	Model 3205 Premier waterproof (IP67) pH/Ion meter supplied with pH/temperature probe (027 227), pH 4 and 7 buffer sachets, detachable electrode lead (013 161), waterproof to BNC lead (538 014), batteries and operating instructions

	033 162 Carry case
	543 001 40 column serial printer
	542 001 Interface cradle
	542 009 Interface cable kit
	060 287 Paper roll for printer (Qty 1)
	060 288 Printer ribbon
	027 228 ATC/Temperature probe
	027 229 Reference electrode with ATC
	013 173 BNC to S7 lead less connector
	538 014 Adapter lead (Waterproof to BNC electrode connector)
	027 227 Replacement pH/temperature probe
	013 161 Waterproof to S7 lead less connector
	021 007 Battery (3 required for each meter)

A number of additional accessories are available for the Model 3205 including pH electrodes.