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Biochemical Sensors Amplifier modules

EMM

ElectroMeter Module type 696  The HSE Electrometer module is a high-impedance electrometer plug-in amplifier for the PLUGSYS measuring system. It is used to measure concentrations with potentiometric electrochemical sensing electrodes. The main application is recording of pCO2 or Na+, K+ and Ca++ concentrations in biological fluids such as perfusate for isolated perfused organs, using the corresponding electrodes e.g. Type 501, 625 , 601 and 603 (see Chemical Electrodes). The input circuit of the module includes an isolation amplifier (potential separation between sensing electrode and circuit ground of the PLUGSYS measuring system) to avoid measurement errors due to ground loops and leakage currents.

Description
Input	floating single-ended input, isolated barrier internally clamped to 300V
Input connector	isolated BNC connector
Input impedance	1015 Ohm
Input bias current	± 300 fA
Resolution	± one least significant digit
Display	3½-digit LED display
Millivolt Range	± 1200 mV
Gain	x10, x20, x50, x100 set internally using a jumper
Output	On BNC connector on the front panel (±10 V, output impedance 100 Ohm); the output voltage is also available on the PLUGSYS bus. The signal output is assigned to the connecting lines AV-1 to AV-16 through a jumper
Supression	only active on output, adjustable with 10 turn trimmer (maximum ±10 V). The suppression can be switched on and off.
Simulation	a physiological measuring range for calibrating the recording output can be simulated using the 2 corresponding push buttons. For each the simulated value can be adjusted in the range of ±150 mV
Power supply	+ 5 Volt / 450 mA (2.25 W)
Dimensions	module for PLUGSYS system, width 8E (40.5 mm), height 3U (128.7 mm),depth Euroboard (220 mm)
Connector	DIN 41612, 96-pin VG
Weight	0.4 kg

HUGO SACHS ELEKTRONIK-HARVARD APPARATUS GmbH
Gruenstrasse 1 · D-79232 March-Hugstetten · GERMANY
Phone: +49 (0) 76 65 - 92 00-0 · Fax: +49 (0) 76 65 - 92 00-90