Ametek Thermox Series 2000 WDG-IV, User Manual

Page: 29 / 193

Specifications | 2-5
Calibration Gas Requirements for Hot-Wire Type Combustibles Detector
Use calibration gases @ 10 PSIG, 1.5 SCFH (0.70 kg/cm 2 , 0.7 L/min.)
o
2
span gas: Air or from 1.0 to 100% o
2
, balance n
2
o
2
comb &
CH4 Zero Gases:
From 0.1 to 10% o
2
, balance n
2
comb span gas: 60 to 80% (ppm ranges) or 40 to 60% (% ranges) of the selected
comb. recorder output range in certified mixtures of
CO + H
2
, 3-4% o
2
, balance n
2
.
CH
4
span gas 2% CH
4
, 8% to 10% o
2
, balance n
2
Calibration Gas Requirements for RTD Type Combustibles Detector
Use calibration gases @ 10 PSIG, 1.5 SCFH (0.70 kg/cm
2
, 0.7 L/min.)
o
2
span gas: Air or from 1.0 to 100% o
2
, balance n
2
Comb & CH4
span gases:
From 0.1 to 10% o
2
, balance n
2
comb span gas: use a combined combustibles and methane span gas containing 60 to
80% of the full scale combustibles operating range in certified mixtures
of CO (or CO + H
2
), 2% CH
4
, 8 to 10% o
2
, balance n
2.
System Compliance
EMc compliance:
Safety Compliance:
2004/108/Ec
73/23/EEc
NOTES :
1. All static performance characteristics are with operating variables constant.
2. System accuracy referenced to 0.1 to 10% calibrated range.
3. Response is to calibration gas (without flame arrestors).