Det-Tronics PIRECL Infrared Hydrocarbon Gas Detector PointWatch Eclipse - Manual (Page 36)

c-3 95-8526 14.2
RESPONSE TIME (Average * in Seconds, with Weather Protection Baffle Installed, and 100% LFL Applied)—
AccuRAcy—
±3% LFL from 0 to 50% LFL, ±5% LFL from 51 to 100% LFL
(at room ambient temperature, +23°C).
other GAses
The Pointwatch Eclipse
® is provided with field-selectable “standard gas” signal processing program settings for linear
measurement of methane, propane, ethylene, and butane gases. This means that the Eclipse is capable of providing
an analog signal output that is directly proportional to the % LFL concentration for these gases, provided the proper
gas setting has been selected, and the Eclipse has been calibrated with the proper calibration gas type. The Eclipse
is performance certified for detection of methane, propane, ethylene, or butane, and is shipped from the factory
calibrated and set for the customer’s choice of one of these gases. Digital communication (such as HART) is required
to confirm the current setting and change it if required. In addition to the gases listed above, the Eclipse is capable of
detecting and measuring many other hydrocarbon gases and vapors, with settings provided for gases such as ethane
and propylene. For detection of other commonly encountered gases where specific gas settings are not provided, one
of the standard settings will usually suffice. Please consult the factory for details.
* Average of three consecutive trials, with the minimum and maximum response times no greater
than ±2 seconds from the average indicated response time.
NOTE: Add 2 seconds to response time for EQP compatible models.
Gas Baffle t50 t60 t90
Methane
Without Hydrophobic Filter 3.7 4.0 6.4
With Hydrophobic Filter 4.4 4.8 8.2
Propane
Without Hydrophobic Filter 5.2 5.6 7.5
With Hydrophobic Filter 5.2 5.6 8.1
Ethylene
Without Hydrophobic Filter 4.9 5.2 6.6
With Hydrophobic Filter 4.2 4.5 10.0
Butane
Without Hydrophobic Filter 5.1 5.4 7.6
With Hydrophobic Filter 5.8 6.1 8.9