GM35 Operating Instructions
Probe Model
Maintenance
72 © SICK MAIHAK GmbH • Germany · All rights reserved 8009389/07-2006
8.4 Resuming Measuring mode
8.4.1 Insertion in the measuring gas duct
‡ Make sure that the SR unit is securely mounted on the flange attachment and measuring
probe by means of the four quick-release locks.
‡ If a purge-air supply is used, make sure that it is in operation and remains switched on
from this point onwards.
Danger due to hot, corrosive, or pressurized measurement gases
When carrying out the activities below, observe the safety instructions on Page page 65 at
all times to prevent injury.
■ If you are using the angle flange, order no. 2 017 833:
‡ Remove the measuring probe with mounted SR unit from the angle flange.
‡ Disassemble the angle flange from the flange with pipe on the duct.
■ If you are not using an angle flange:
‡ Remove the protective cover from the duct-side flange with pipe.
‡ Insert the measuring probe with mounted SR unit in the flange with pipe on the duct.
‡ As shown in Fig. 36 on Page page 67, mount the measuring probe on the duct-side flange
using the parts (4 screws M16x60, each with nut and 2 washers) you removed earlier.
‡ If you are using a GPP measuring probe, it is important that you restore the power supply
quickly (Chapter 8.4.2) so that the optical boundary surfaces in the measuring probe can
be heated again as fast as possible.
8.4.2 Electrical connections
‡ If you have removed the connectors and cable for the functional ground on the bottom
of the SR unit, connect them again. Secure the connectors by tightening the sleeves. The
arrangement is shown in Fig. 32 on page 58.
‡ Make sure that the cables are laid correctly, without strain-relief clamps.
‡ If you are using a GPP measuring probe, make sure that the separate power supply cable
is connected correctly.
‡ Switch on the power supply to the SR unit again.
8.4.3 Check and adjust the optical alignment of des GM35
The alignment of the optical axis is checked using the sight on the right side of the SR unit
housing and adjusted by varying the probe mounting on the device flange. The function
“ADJ.OPT.ALIGN” needs to be activated for systems that operate with automatic alignment,
see chapter 6.4.3, page 52.
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