EMF-16

Precision Electrochemistry EMF Interface







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Datasheet
Software
Instruction Supplement


OVERVIEW
The EMF16 is a high-resolution, high input impedance, data acquisition system for electrochemistry applications. It connects to a PC serial port for presentation and storage of EMF data. The bundled software is written by electrochemists for electrochemistry. It allows up to 16 channels of data to be scanned and displayed, and saved to the disk in real time.The EMF16 is built around our proven 24-bit A/D system. The DC specifications are much better than those of most pH meters. Linearity is 0.002% of full scale, input impedance is 10^13 ohms, reproducibility is better than one part per million. BNC connectors are provided for the 16 buffered inputs and for the buffered reference electrode. All inputs are protected against overvoltage. Three measuring modes are selectable via a front-panel switch. Further flexibility is provided through software configuration.

The EMF16 is supplied as a complete system including the interface box and Windows software, serial cable, power supply and comprehensive manual. A Macintosh version is also available.
SPECIFICATIONS



A/D TYPE
24-bit delta-sigma converter with microncontroller supervisor and optical isolation

MONOTONICITY
23-bits

LINEARITY
+/-0.002% of full scale

DIFFERENTIAL INPUT RANGE
+/-5volts

DC COMMON MODE RANGE
+/-6.5volts

DC COMMON MODE REJECTION
-100dB typical

INPUT PROTECTION
Will withstand up to 40 volts continuous overvoltage

INPUT IMPEDANCE
10^13 ohms typical

POWER REQUIREMENT
110 to 48 VDC, regulated or unregulated

INTERFACE
RS-232, compatible with USB adapter cables

OTHER SOFTWARE
General-purpose acquisition and graphing software for Win98 and later available for free download at our website

OPTIONS
220 VAC power supplyno charge
10^15 ohm input impedence$200
8-channel unit with fully differentical inputs for combination electrodes$200
Expanded systems - we can increase the channel count to 32, 48, or 64.Contact factory for pricing


SIZE
9" wide x 8" deep x 2.5" high

SHIPPING WEIGHT
7 pounds

AVAILABILITY
Stock to 3 weeks

SINGLE-PIECE PRICE
$1995.00




L-EMF DAC Software Version 3.0 is now shipped with each EMF16
Features include:
*   Flexible acquistion rates and filtering
*   Auto-scaling graphics
*   Self-calibration with easy offset voltage suppression
*   Full-speed operation, even on slower computers
*   Pause Control
*   Test Mode
*   Pop-up Help
*   Enhanced interoperability
*   Win95 through XP operating system compatibility
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Normal Windows style app written in VisualBASIC
Win98/ME/2k/XP
Full Installation package   (approx. 1.4meg)
( for those who have never installed this software )
Download archive

instructions for opening archive
( plain text style format )


Main Application and support files only   (approx. 74k)
( may include DLL and .ini files )
Download archive

instructions for opening archive
( plain text style format )


Screen Shots

Documentation
(also included in archive)















































































 
INSTRUCTION  SUPPLEMENT  for  EMF16

There are three grounding options selected by the mode switch above our logo:

DIFF is the best, for pure differential measurements. In the  DIFF  positions,  you  *must*  add a third connection to the solution. Use a separate wire to connect the solution to the  COMMON  terminal or   BNC  connector.

For  SAFE  and  COMMON  positions,  do not use the third wire.  In these cases,  the reference input is connected internally to the common. The Safe mode protects the hardware against severe overvoltage and may be just a bit noiser as a result.  The  SAFE  and  COMMON  POSITIONS  can have the effect of lowering the input impredance on the reference side.

The input impedance is  10^13  at room temperature.  Input current is typically 3 picoamps.  A  10^15  version is available as an option.  An 8 channel differnetial option is also available.

For more information about the internal function of the  EMF16,   refer to the Model 201 Manual.  The  16 EMF  channels are addressed at analog input channel number zero,  external sub-channels 0 through 15.


NOTE:  For demanding applications,  you may want to consider the free Model 201  graphics software  at our web site.

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Last Modified 3-16-09 by Tim Van Dusen