DBA
DC-Bridge Amplifier type 660
d.c. voltage bridge amplifier for electrical measurement of mechanical variables such as force, pressure, displacement using suitable transducers
DBA
|
DC-Bridge Amplifier type 660d.c. voltage bridge amplifier for electrical measurement of mechanical variables such as force, pressure, displacement using suitable transducers |
Description | |
| Bridge supply voltage | 0 -15 V, selectable in 1 V steps through a selector switch on the circuit board |
| Gain | switch x 1 : 1 – 1000 switch x 10 : 10 – 10 000 through 10-turn trimmers |
| Bridge balance | through 10-turn trimmer coarse adjustment and 10-turn potentiometer fine djustment |
| Output-low-pass filter | 12 positions 0.01 Hz – 3 kHz selected by rotary switch |
| Signal input | 6-pin socket with screw lock (Binder, Amphenol Tuchel) |
| Signal output | on front panel through BNC socket ±10 V (filtered signal
voltage) through bus connector to PLUGSYS measuring system through link plugs ±10 V filtered signal voltage and unfiltered signal voltage) |
| Analog indication | through LED bargraph + 20 LEDs/–9 LEDs for visual check on the measurement. The sensitivity can be selected between 500 mV/LED and 50 mV/LED. |
| Electrical calibration 1 | CAL 1 adjustable through 10-turn trimmer, negative and positive calibration voltage. The calibration signal is superimposed on the measurement signal by pressing the CAL 1 key. |
| Electrical calibration 2 | CAL 2 selected internally through link plugs a) positive calibration voltage b) negative calibration voltage c) external calibration voltage from PLUGSYS measuring system. The amplitude of the calibration voltage is adjustable with a 10-turn trimmer. The calibration signal is applied on pressing the CAL 2 key. During this time the measuring signal is switched off. |
| Suppression | SUP adjustable with 10-turn trimmer, negative and positive values. The suppression can be switched on and off with a switch. |
| Signal output MUX | after pressing the MUX (MULTIPLEX) key the filtered signal output of the amplifier is switched to the input of an optional digital voltage module for accurate zero adjustment and calibration setting. The function is self-maintained; the module previously selected is switched off. |
| Power supply | + 5 V, 900 mA with 350 Ohm transducer connected to it, through connector from the PLUGSYS bus system |
| Dimensions | module for 19 inch rack, width 8 E (40.5 mm), height 3 U (128.7 mm), depth Europe size (220 mm) |
| Connector | DIN 41612, 96-pin VG |
| Weight | 330 g |
TAM
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Transducer Amplifier Module typeThe Transducer Amplifier Module is an universal amplifier with d.c. voltage bridge supply. It is used for the measurement of mechanical variables like pressure, force, displacement etc.. using transducers based on resistive wheatstone bridge. Transducers with a built-in preamplifier which have a high level DC output voltage can also be connected. It exists in two versions, TAM-A with LED bargraph display for observing the signal dynamics, or TAM-D with digital display for displaying the mean value. |
Description | |
| Bridge supply voltage | +5V / 50 mA max |
| Transducer input | 6 pin socket with screw lock (Binder, Amphenol Tuchel) differential input circuit, input impedance 1010 Ohm |
| Gain | Selectable ranges by internal jumper: 0.2 - 10, 0.4 - 20, 1 - 50, 2 - 100, 4 - 200, 10 - 500, 20 - 1000, 100 - 5000, 200 - 10000 fine adjustment trough 10-turn trimmer |
| Bridge balance | through 10-turn trimmer coarse adjustment and electronic autozero by push button (LED for Error if autozero is not possible) |
| Signal output | a) on front panel through BNC socket ± 10 V pulsatile
filtered or mean signal output internally selectable b) through bus connector to PLUGSYS measuring system through links ±10V pulsatile filtered and mean signal voltage |
| Output low-pass filter | a) selectable by switch on front panel for pulsatile output
signal: 1, 100, 300 Hz b) selectable by internal jumper for mean output signal: 0.1, 0.3 Hz |
| Analog indication | TAM-A LED bargraph 20 LEDs (+13/-7) for visual check on the
signal sensitivity appr. 1 V/LED TAM-D 3½-digit LED display |
| Electrical calibration | selectable by switch on front panel a) 0 V output signal with switch in position „0“ b) positive or negative calibration output voltage adjustable with a 10-turn trimmer if switch is in position „CAL“ |
| Power supply | +5V through connector from the PLUGSYS bus system |
| 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
