Commissioning
Note: If the digital link is not connected between the receiver and transmitter
then the transmitter must be put into alignment mode independently of the
receiver using the Hand Held Terminal. It must also be taken out of alignment
mode before zeroing.
•
Adjust the receiver left↔right and up↔down (adjusting greater offset direction
first) until maximum signal is obtained, and centre the receiver target display.
When aligned tighten the eight receiver adjustment socket head screws
but do not fully clamp yet. Disconnect the Hand Held Terminal from the
receiver.
Step 2: transmitter alignment
4-60m transmitter
•
Now connect the Hand Held Terminal to the transmitter. A cartesian ‘target’
showing the orientation of the transmitter with respect to the straight line to
the receiver lens will be displayed on the left-hand side of the Hand Held
Terminal display. (As in Step 1).
•
Adjust the transmitter left↔right and up↔down (adjusting greater offset
direction first) until maximum signal is obtained, and centre the receiver
target display. When aligned tighten the eight transmitter adjustment socket
head screws and fully clamp. Disconnect the Hand Held Terminal from the
transmitter and reconnect to the receiver.
Figure 8: AP800 Attenuator plate (fitted to 4-60m transmitter only)
Fit attenuator to Transmitter
when lens-to-lens distance is 4 to 16 m
AP800
PLMS
Remove centre for 8 to 16 m
Retain centre for 4 to 8 m
Commissioning
NOTE: The following instructions assume the Polytron Pulsar 2 Open Path
Gas Detector has been correctly mounted, and the electrical connections
are as illustrated in the previous section, and the correct power supplies
have been provided and energised.
•
Inhibit any control actions connected to the pulsar output.
•
Slacken the eight adjustment socket head screws on both the transmitter
and receiver.
•
Adjust the transmitter and receiver so that they are pointing closely toward
each other.
Step 1: Initial receiver alignment
•
Connect the Hand Held Terminal to the receiver and switch on by pressing
any button.
•
At the RX ALIGN+ZERO menu select ‘ALIG’. A cartesian ‘target’ showing the
orientation of the receiver with respect to the straight line to the transmitter
lens will be displayed on the right-hand side of the Hand Held Terminal
display.
