SICK GM35 User Manual

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8009389/YN39/V3-0/2015-08| SICKOPERATING INSTRUCTIONS|GM35
Subject to change without notice
PRODUCT OVERVIEW
Special versions Apart from the standard probes shown above, other versions made from materials
especially resistant to acid are available (1.4539 and PVDF). Special versions can be
manufactured according to customer demands on request.
2.1.3 GM35 options and accessories
• Automatic beam tracking
Ensures exact alignment of the measuring path to the probe (open and GPP version) under
difficult and changing measurement conditions, such as, for example, large temperature
fluctuations.
• CAN bus extension cable 15 m
A 15 m extension cable, ready for connection, is available when the evaluation unit is to be
installed more than 2 m away from the SR-unit.
• Terminal box for CAN bus
For even greater distances between SR-unit and EvU, an optional terminal box can be used
for the connection via the CAN bus cable provided by the customer. The total length of the
CAN bus connections in the GM35 measuring system can be up to 1000 m in this case.
However, the EvU is normally installed close to the SR-unit for easy operating at the
measuring point. Section
“Preparations for electrical installation”, page 30 describes how
to use the terminal box.
• Angle flange for zero point measurement
Some adjustments must be made outside the duct in an atmosphere free from sample
gas. A suitable angle flange that can be screwed to the mounting flange is available to
enable carrying out these adjustments easily and directly at the measuring point. The duct
is sealed and the SR-unit with measuring probe is mounted in front of the duct opening, at
a right angle to the duct, using this bracket.
• Weatherproof covers for SR-unit and purge air unit
Required for outdoor installation – dimension drawings,
see page 128.
• Line writer, single or multi-duct
For measured value recording. Protocol(s) can of course be produced using customer
systems.
• Air heater for purge air supply
For special application conditions to prevent condensate. An air heater is required when
the difference between gas temperature and dew point temperature is too low. The
following practical rule of thumb serves as guideline:
An air heater is required when :
Gas temperature [°C] – dew point temperature [°C] < abs. humidity [%]
Values are compared without considering the units of measure.

SICK GM35 Specifications

General

Brand	SICK
Model	GM35
Category	Measuring Instruments
Language	English