AMI Analyzer Manual
Analyzer Description
24
freezing. The exhaust is typically a flammable gas, so it must be vented in a safe area. The exhaust line
should run downhill, so that pockets of condensate do not collect at the low point. A “Back diffusion
assembly” may be used to prevent diffusion of air back into the sensor should flow be lost.
Power connections:
The analyzer is designed to operate off a nominal 12 -24V DC supply such as a lead-acid battery. The
Absolute Maximum Voltage is 28VDC, and the minimum is 10V. If the power supply exceeds 28V, the unit
will shut down until the excess voltage goes away, unless the voltage exceeds 240V, in which case the unit
will be damaged. At some point below 7V, the unit will shut down with no damage.
The unit is supplied with a six-position connector. The connections are as shown in the drawing below.
Figure 6 Electrical connections, viewed from the analyzer side
The ground stud on the bottom of the box MUST be made to a good earth, with a resistance to ground of
less than 1 Ohm.
Output connections:
This unit is provided with a single output, either 4-20mA or 1-5V as ordered. It is possible to change this
and also to calibrate the output to the monitoring device using the AMI User Interface. See the AMI User
Interface manual for details on this.
