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Biochemical Sensors Amplifier modules

pHMM

pH Measurement Module type 694 The HSE pH Measurement module is a plug-in module for the PLUGSYS measuring system, used to measure pH with pH glass electrodes. The main application is pH recording with the combination pH electrode Type 830 for measurement in biological fluids such as perfusate for isolated perfused organs. 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
pH Range	0 to 14
Resolution	0.01 pH
Display	3½-digit LED display
Millivolt Range	± 600 mV
Offset range at pH7	±100 mV
Slope	45 mV/pH to 90 mV/pH
Output	1 Volt per 1 pH on BNC connector on the front panel (±10 V); the output voltage is also available on the PLUGSYS bus
Suppression	0FF output voltage 0 Volt = pH 0 and 10 Volt = pH 10 0N  output voltage 0 Volt can be adjusted to any pH in the range 0 to 14
Slope adjustment	2 point adjustment using calibrated buffer solutions
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 pH range of 0 to 14
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