Siemens LDS 6 Operating Instructions Manual page 12

Technical Information
2.1 General Description
Essential characteristics
● Integrated calibration adjustment with an internal reference cell
● Negligible long-term drifts of zero and span
● Dynamic background correction for varying dust loads
● Isolated signal outputs, 4 to 20 mA
● User-friendly, menu-driven operation
● Selectable time constants (response time)
● Two user levels with individual access codes for prevention of unwanted and
● Operation according to NAMUR recommendations
● Monitoring of overall optical transmission
● Remote preventive maintenance and servicing via Ethernet/modem
● Straightforward replacement of the central unit, since connections can easily be removed
● Sensor and central unit housing free of wear and corrosion
● Easy operation with a numerical keypad and menu prompting
Certified versions for emission monitoring
The LDS 6 is available as certified instrument for emission monitoring of NH
HCl, HCl/H
Kingdom. For conducting regular linearity and calibration checks, test kits for ammonia,
water and HCl should be used. These kits can be ordered separately as instrument
accessories. For new analyzer orders, the NH
must be ordered. In case of doubt or for already installed analyzers, please contact Siemens
for spotting the correct kit version.
12
unauthorized operations
O. The certificates are issued by TÜV for Germany and MCERTS for the United
2
, NH /H O and H O kits named "Version 2"
3 3 2 2
Operating Instructions, 01/2009, A5E00295894-05
, NH /H O, H O,
3 3 2 2
LDS 6