NL108A - Pressure Amplifier
Introduction
The
NL108A Pressure Amplifier
module provides two gain settings, one appropriate for
blood pressure measurement (1.0V at the output corresponds to 100mmHg pressure at
the transducer) and the other for low pressure measurement such as intra-tracheal
pressure (100mV at the output equals 1cmH
2
O at the transducer port).
An internal voltage calibrate provides the appropriate deflection (1.0V or 100mV) for
these two ranges. Other features include excellent DC stability, a push-button switch for
setting the zero pressure baseline on the recording instrument and a sensitive zero offset
control.
Although the NL108A is designed to mate perfectly with our own NeuroLog™ pressure
transducers (
NL108T1, NL108T2, NL108T3
or
NL108T4
), due to its internally adjustable
gain and bridge excitation voltage, it can be used with a variety of other standard
pressure transducers.
NB:
The NL108A has the same functions and front panel as the earlier NL108 but
contains updated circuitry.
Connections to Transducer
If a NeuroLog™ transducer is not being used an input plug type NL963K must be correctly wired to the particular
pressure transducer to be used with the NL108A.
The front panel socket, seen from the front of the NL108A panel, has the following connections :-
The signals are described in terms of the function of the NL108A.
These connections are the same from the soldering end of the plug to be fitted to the transducer lead.
continued over ...
+ INPUT
- INPUT
+ BRIDGE EXCITATION
- BRIDGE EXCITATION
Users Manual
NeuroLog™ System
NL108A
Digitimer Ltd
Page 1 of 3
Copyright © 1996-2000
E-mail:
Tel:
+44 (0)1707 328347;
Fax:
...373153
Website:
www.digitimer.com
PRESSURE AMP .
NL108
OUT
IN
CALIB.
1.0V
OFF
100mV
1.0V = 100mmHg.
100mV = 1cmH O
ZERO ADJ.
OUT GND.
2
