PLUGSYS Electrometer Module (EMM)
Use to measure CO2 concentration or ion concentrations in biological fluids such as perfusate for isolated perfused organs, using appropriate electrodes
The Electrometer Module (EMM) is a high-impedance electrometer plug-in amplifier for the PLUGSYS measuring system. It is used to measure continuously 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.
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.
| Item # | 73-0212 |
| Connector | DIN 41612, 96-pin VG |
| Display | 3-1/2 -digit LED display |
| Gain | x10, x20, x50, x100 set internally using jumper |
| Input | Floating single-ended input, isolated barrier internally clamped to 300 V |
| Input Bias Current | ± 300 fA |
| Input Connector | Isolated BNC connector |
| Input Impedance | 1015 Ω |
| Millivolt Range | ±1200 mV |
| Output | On BNC connector on front panel (± 10 V output, impedance 100 Ω) |
| PLUGSYS Width | 2 slot units |
| Power Supply | +5 V/450 mA |
| Resolution | ± one least significant digit |
| Simulation | Physiological measuring range for calibrating recording output can be simulated using 2 corresponding push buttons; for each simulated value can be adjusted in range of ±150 mV |
| Suppression | Only active on output, adjustable with 10 turn trimmer (max. ±10 V; suppression can be switched on and off |
