RKI Instruments Eagle Series - Manual (Page 65)

Eagle Instruction Manual Appendix C: Non-Standard Toxic Gas Sensors • 58
Hose and Probe
Some super toxic gases require a super toxic probe with a plastic
fitting instead of the standard hose with the metal fitting. This super
toxic probe does not have a particle filter installed. Use a short tubing
stub to connect the super toxic probe to the inlet of the Eagle. Other
super toxic gases cannot be measured with a probe at all. In both
cases, a 3 foot teflon hose is included with the instrument instead of
the standard hose. See the above table for the gases that fall into either
category.
Description
Non-standard toxic gas sensors are mounted in the front half of the
instrument case. These sensors each include a dedicated amplifier
with ZERO and SPAN controls. A bracket secures the sensor/
amplifier assembly to the instrument case. A flow adapter connected
to the sensor allows the sample to flow through the non-standard
toxic gas sensor. A seven-position connector plugs into the EC3
(channel 3) or EC4 (channel 4) socket on the analog PCB.
Hydrogen
Selenide** 0 to 200 ppb 1 50 ppb 100 ppb 50 ppb 100 ppb
Nitric Oxide 0 to 100 ppm 10 ppm 25 ppm 25 ppm 50 ppm
Nitrogen Dioxide 0 to 15.0 ppm 1.0 ppm 3.0 ppm 3.0 ppm 5.0 ppm
Ozone** 0 to 1.00 ppm 0.10 ppm 0.30 ppm 0.08 ppm 0.10 ppm
Phosphine 0 to 1.00 ppm 0.10 ppm 0.30 ppm 0.30 ppm 1.00 ppm
Silane 0 to 15.0 ppm 2.0 ppm 5.0 ppm 5.0 ppm 5.0 ppm
Sulfur Dioxide 0 to 10.0 ppm 1.0 ppm 2.0 ppm 2.0 ppm 5.0 ppm
Sulfur Dioxide 0 to 15 ppm 1.0 ppm 2.0 ppm 2.0 ppm 5.0 ppm
1 ppb (parts per billion)
*Use the super toxic probe (particle filter removed) when monitoring for these gases.
**Do not use a probe when monitoring for these gases. The probe will absorb the gas
sample.
Table 8: Non-Standard Toxic Gas Sensors Specifications
Target Gas Range Alarm 1 Alarm 2
TWA
Alarm
STEL
Alarm