Dräger Polytron Pulsar 2 - Maximum Power Cable Lengths (Transmitter Only)

Dräger Polytron Pulsar 2 Digital Interface AI500
Dräger Polytron Pulsar 2 Digital Interface AI500
The AI500 is a compact DIN/EN rail-mounted unit, normally located in the non-
hazardous area. It communicates digitally with one to four Dräger Polytron Pulsar
2 Open Path Gas Detectors and provides easy access to their current measured
values, congurations, and internal data-logger records.
The measurements include not only gas reading and signal strength, but such
detailed information as supply voltage, temperature, noise level and the x y
alignments of transmitter and receiver. Data is available through a hard-wired EIA
RS 422/485 communications port, a separate port for the Hand-Held Terminal
(or Communicator), and has an infra-red signal to a Data Wand. This multiplicity
of functions allows the AI500 to be used in systems with dierent levels of
complexity.
In a fully-engineered installation the full current and historical data are available
continuously to a central system via an EIA RS 485 multi-drop. In the simplest
form, only the 4-20mA signal from each Dräger Polytron Pulsar 2 Open Path Gas
Detector is used for indication and control action, with states requiring operator
attention signalled as static values of the current.
When a Dräger Polytron Pulsar 2 Open Path Gas Detector is identied as requiring
investigation, the operator is able to call up any one of the Dräger Polytron Pulsar
2 receivers connected to the AI500. Where the Hand Held Terminal and has the
same functionality as if connected to the eld units
Figure 10: Digital Interface AI500