Detcon DM-400IS User Manual
Page 20
Sensor is Slow (>> 5 minutes) to stabilize on calibration gas
Probable Causes: Failed electrochemical sensor, ice/mud/dust blocking sensor membrane.
1.
Verify there is no ice/mud/dust blocking sensor membrane.
2.
Redo Span Calibration with validated Span Gas standard (check with Pull Tube).
3.
Replace with new electrochemical sensor.
Sensor reads XXX mV on output
Probable Causes: Blown fuse(s) on Barrier PCB.
1.
Replace sensor head (keep electrochemical sensor).
2.
Consult Detcon for assistance.
Noisy Sensor (+/- 5-10 mV of continuous drift) or suddenly Spiking
Probable Cause: Unstable power source, Inadequate grounding, Inadequate RFI protection.
1.
Verify power Source output and stability.
2.
Contact Detcon for assistance in optimizing shielding and grounding.
3.
Add RFI Protection accessory available from Detcon.
3.8 S
PARE
P
ARTS
L
IST
943-000006-132
Calibration Adapter for DM Sensors
897-850800-000
3 port enclosure less cover
897-850400-000
Enclosure cover
960-202200-000
Condensation prevention packet (replace annually).
500-512500-000
DM-400IS Base Connector Board
924-995480-000
Universal Plug-in Transmitter for Biased Sensors
924-995480-U01
Universal Plug-in Transmitter for Unbiased Sensors
Model Number
Gas Name
IS Sensor Head*
Plug-in Replacement Sensor Cell
DM-400IS-C2H3O
Acetyldehyde
394-12EA00-Range
370-12EA00-000
DM-400IS-C2H2
Acetylene
394-12EG00-Range
370-12EG00-000
DM-400IS-C3H3N
Acrylonitrile
394-12EM00-Range
370-12EM00-000
DM-400IS-NH3 (-20°C)
Ammonia
394-171700-Range
370-171700-000
DM-400IS-NH3 (-20°C)
Ammonia
394-181800-Range
370-181800-000
DM-401IS-NH3 (-40°C)
Ammonia
394-151500-Range
370-151500-000
DM-402IS-NH3 (CE)
Ammonia
394-505000-Range
370-505000-000
DM-400IS-AsH3
Arsine
394-191900-Range
370-191900-000
DM-400IS-Br2
Bromine
394-747500-Range
370-747500-000
DM-400IS-C4H6
Butadiene
394-12EB00-Range
370-12EB00-000
DM-400IS-CS2
Carbon Disulfide
394-12EH00-Range
370-12EH00-000
DM-400IS-CO
Carbon Monoxide
394-444400-Range
370-444400-000
DM-400IS-COS
Carbonyl Sulfide
394-12EN00-Range
370-12EN00-000
DM-400IS-CL2
Chlorine
394-747400-Range
370-747400-000
DM-400IS-CLO2 (>10ppm)
Chlorine Dioxide
394-747600-Range
370-747600-000
DM-401IS-CLO2 (
≤
10ppm)
Chlorine Dioxide
394-777700-Range
370-777700-000
DM-400IS-B2H6
Diborane
394-192100-Range
370-192100-000
DM-400IS-C2H6S
Dimethyl Sulfide
394-12EC00-Range
370-12EC00-000
DM-400IS-C3H5OCL
Epichlorohydrin
394-12EI00-Range
370-12EI00-000
DM-400IS-C2H5OH
Ethanol
394-12EO00-Range
370-12EO00-000
DM-400IS-CH3SH
Ethyl Mercaptan
394-24EZ00-Range
370-24EZ00-000
DM-400IS-C2H4
Ethylene
394-12ED00-Range
370-12ED00-000
DM-400IS-C2H4O
Ethylene Oxide Hi Range
394-12EJ00-Range
370-12EJ44-000
DM-400IS-C2H4O
Ethylene Oxide
394-12EJ00-Range
370-12EJ00-000
DM-400IS-F2
Fluorine
394-272700-Range
370-272700-000
DM-400IS-CH2O
Formaldehyde
394-12EP00-Range
370-12EP00-000
DM-400IS-GeH4
Germane
394-232500-Range
370-232500-000
DM-400IS-N2H4
Hydrazine
394-262600-Range
370-262600-000
DM-400IS-H2 (ppm)
Hydrogen
394-848400-Range
370-848400-000
DM-401IS-H2 (LEL)
Hydrogen
394-050500-Range
370-050500-000
DM-400IS-HBr
Hydrogen Bromide
394-090800-Range
370-090800-000
DM-400IS-HCL
Hydrogen Chloride
394-090900-Range
370-090900-000
DM-400IS-HCN
Hydrogen Cyanide
394-131300-Range
370-131300-000
DM-400IS Toxic Gas Sensors PG.20