Honeywell XNX-AM Series, Техническое руководство, Страница: 145 / 207

XNX Universal Transmitter
Specifications 143
EC Sensor Performance Data, DEKRA EXAM Verified
(see Certifications by Part Number Series )
Gas
Cartridge
Part Number
Selectable Full
Scale Range (Dis-
play and 4-20mA
Full Scale)
Default
Range
Range
Incre-
ments
Lower
Alarm
Limit
Lower
Detection
Limit
Zero
Variation
Selectable
Cal Gas
Range
Default
Cal Point
Response
Time (T50)
(sec)
T90 Response
T10 Recovery
Time (sec)
Accuracy1
Operating Temperature Operating Humidity
EC Sensor
Expected
LIfe
(months)
Min Max Min Max
O
2
Oxygen XNXXSO1SS n/a 25.0 %Vol n/a 5.0%Vol 3.5 %Vol n/a
20.9 %Vol
(fixed)
20.9 %Vol T20 <10 <30 <+/-0.6 %Vol -30°C / -34°F 55°C /131°F 15% RH 90% RH 24
H
2
S
Hydrogen
Sulfide
XNXXSH1SS 10.0 to 50.0 ppm 15.0 ppm 0.1ppm 3.0 ppm 1.0 ppm 2.0 ppm
30 to 70%
of the
selected full
scale range
10 ppm <20 <30 <+/-0.3 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH 12
H
2
S (High)
Hydrogen
Sulfide
XNXXSH2SS 50 to 500 ppm 100 ppm 10 ppm 5 ppm 1 ppm 2 ppm 50 ppm <20 <30 <+/-5 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH 12
CO
Carbon
Monoxide
XNXXSC1SS 100 to 500 ppm 300 ppm 100 ppm 15 ppm 5 ppm 10 ppm 100 ppm <15 <30 <+/-2 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH 24
Footnote:
1. Accuracy of reading at default Alarm 1 concentration (typically 10% FS or defined minimum alarm level setting, whichever is greater) when operated at default full scale.
Notes:
• Sensor drift between LDL and negative drift fault limits (typcially > negative zero variation) appear as 0 on the display and outputs of the device.
• Long-term drift: XNXXSC1SS <5%/year, XNXXSO1SS <4%/year, XNXXSH1SS and XNXXSH2SS <2%/month.
• Performance figures are measured by test units calibrated at 50% of full scale, at ambient conditions of 20°C, 50% RH, with the EC weatherproof cover attached.
• Operating the EC sensor at extended temperature ranges for a prolonged time period exceeding 12 hours may cause deterioration in sensor performance and shorten sensor
life. Extended temperature ranges for XNX EC sensor cartridges are -40°C to -20°C.
• Barometric pressure effects on the O
2
sensor: The output from the O
2
sensor has pressure effects of <0.1% change of output per % change in pressure. When the barometric
pressure changes by ±20%, the output from the O
2
sensor changes <±0.4%Vol. However, the oxygen sensor shows transient behavior when subjected to a rapid change in
ambient pressure due to either weather or altitude. For example, a 10KPa instantaneous positive pressure step change may cause an overscale alarm condition for a period
of about 12 seconds.
• Response times may increase at lower temperatures.
• Contact Honeywell Analytics for any additional data or details.