RKI Instruments GD-70D Series - Manual (Page 6)

1 Overview 1-1. Product components
GD-70 - 6 -
1
Overview
1-1. Product components
<Gas Detector (GD-70D Series)>
<Standard Accessories>
• Operating manual
• Protective rubber cap (to be removed when using the
detector)
• Dedicated handling lever (for wiring)
• Dust filter
• Interference gas removal filter (to be supplied with some
sensor units)
<Pyrolyzer Unit (PLU-70) (Option)>
* This is needed in "pyrolyzer + electrochemical type (ESU)"
and "pyrolyzer + pyrolysis-particle type (SSU)".
For more information on the pyrolyzer unit (PLU-70), see the
individual operating manual.
1-2. Purpose of use
• This is a fixed type gas detector head which detects leak of gases used in semiconductor factories, etc.
• The gas detector is a safety device, not an analyzer or densitometer which performs quantitative/qualitative
analysis/measurement for gases. You must understand the features of the detector before using it, so that
you can use it properly.
• The detector detects abnormalities in the air caused by presence of gases or other reasons (leak and
oxygen deficiency) with the built-in gas sensor unit. The concentrations of detected gases are shown on the
Character LCD.
• The built-in pump in the detector sucks gas to perform gas detection.
• The detector has two-step gas alarm contact and fault alarm contact.
• The detector outputs gas concentration in 4 - 20 mA or digital data.
GD-70D Analog Transmission (4-20 mA specification)
GD-70D-NT 2-wire type DC power-line communication (NT specification)
Pyrolyzer unit