Page 398 - Praxair - Specialty Gases and Equipment Reference Guide

Gas Detection Systems

Intelligent Gas Detector

GD-70D Series
The new Model GD-70D smart gas detection transmitter
series sets a new standard for performance, flexibility, and
versatility. The GD-70D sample-draw transmitter offers an
array of sensor technologies unmatched in the industry,
including unique offerings, such as our hydrogen-specific
or LEL versions.

The long life high capacity pump and wide variety of
sensing elements are replaceable in a few seconds, with no
tools required. The smart sensors retain all calibration and
sensor-specific data in non-volatile memory, so sensors can
be hot-swapped in the field with no programming required.
The sensors also retain calibration information, which means
they can be conveniently calibrated separate from the
transmitter, avoiding transport of calibration gases to field
locations. The GD-70D firmware automatically corrects for
long-term zero and span “drift” minimizing maintenance
and maximizing reliability.
The GD-70D can be used as a stand-alone device, offering
a number of communication protocols to existing PLC
systems, or can be integrated with the Beacon series of
single and multi-channel controllers.

All GD-70D transmitters include a large, easy to read integral Features
LCD display, tri-color bar graph for visual notification of n Monitor combustibles, O 2 , and a wide range of toxics Section E – Gas Handling Equipment
alarm status, programmable low and high alarm relays, and n Plug and play intelligent sensors retain
fault relay. Pump flow is self-tuning for maintenance-free calibration and sensor data
operation. Because all GD-70D base units are identical, n Common platform (main unit/sensor/pump) for all
sensors can be interchanged with no programming or tools detection methods
required, resulting in maximum flexibility to the user. n Universal main unit (all sensor types)
n Multifunctional sensor unit (new intelligent sensor)
n No internal tubing (main unit)/no coil (pump)
n Front access, no tools required, easy sensor and
pump replacement
n Large size LCD screen
n Various communication methods available
(4-20mA, LonWorks, and PoE)
n Minimal maintenance cost through enhanced
troubleshooting firmware functions
n Small mounting space
n Environmentally friendly
n Wide variety of sensors available

1-877-PRAXAIR www.praxairdirect.com E•397