| Channel Configurations |
Single and two channel
|
| Moisture Parameters |
Dew point °C and °F |
| Moisture Content |
Automatic pressure compensated conversions:
ppmV for natural gas and ideal gas,
lbs/MMscf and mg/m3 for natural gas.
Dew point at a pressure input by the user for
natural gas and ideal gas.
Calculations for natural gas moisture content
based on either IS0 18453 or IGT#8 to
customer order preference |
| Analysis Pressure |
barg, MPa and psig |
| Sensor Technology |
Michell Ceramic Moisture Sensor |
| Measurement Range |
-120°C dp to +30°C dp
1 ppbV to 30,000 ppmV
0 to 250 barg |
| Calibration Range |
-100°C dp to +20°C dp
10 ppbV to 23,000 ppmV |
| Accuracy |
Dew point: ±1°C between -59.9 & +20°C dp
Moisture content: ±10% of reading
Dew point: ±2°C between -60 & -100°C dp
Moisture content: ±20% of reading
Analysis Pressure: ±0.25% FS |
| Measured Resolution |
0.1°C: -80 to +20°C dp
1°C: -100 to -80°C dp |
| Displayed Resolution |
Dew point: 0.1°C
Moisture content: autoscale, 5 digits
MPa and barg: 0.1, psig: 1.0 |
| Resolution |
0.1°C between +20 and -80°C dp
1°C between -80 and -100°C dp |
| Temperature Coefficient |
Algorithm compensation |
| HMI: Keyboard
Interface |
Capacitive touch-screen through glass |
| Display |
Vacuum fluorescent |
| Datalogging |
A rolling maximum of 150 data logs is
available
Each log records time, date, moisture and
pressure values for each channel
5 minutes minimum and 60 minutes maximum
logging intervals can be set by the user |
| Communications and
Output |
Two non-isolated 4-20 mA per measurement
channel. 500 Ω maximum load. Range and
parameter settable by user.
Modbus RTU @ 9600 baud-rate
Alarms: two volt free contacts per channel; one
process value and one instrument status
Also
available via Modbus communications |
| Main Unit Enclosure |
Internal temperature control for condensation
protection and stable analysis conditions |
| Type |
Flameproof EExd |
| Construction |
Cast copper-free aluminium |
| Finish |
Chromate primer, Polyester P9010 powder
coated (black). Meets BS3900 |
| Operating Pressure |
Max 206 barg |
| Sample Connections |
¼" NPT (female) |
| Sample Flow Rate |
0.5 to 5 l/min |
| Sample Flow Alarm |
Optional |
| Power Supply |
90 to 260 V AC, 50/60 Hz, 180 W Main Unit |
| Operating environment |
Indoor/Outdoor -20°C to +60°C
Max 95% RH Shaded location |
| Remote Interface |
| Optional for indoor
safe area installation
host capacity |
Up to 31 Michell EExd Process Instrumentation Range analyzers in any combination of models via Modbus |
| Display |
Backlit color 15cm/6" LCD |
| User Interface |
Integral mouse, on-screen keyboard |
| Functions |
View and modify analyzer operating settings
Record parameters to file and view virtual chart recorder
Analyzer diagnostics |
| Ports |
LAN, USB2 |
| Data Download |
CSV (comma separated variable) format for easy import to Excel™ |
| Remote Access |
OPC (OLE for Process Control) over a LAN
Imbedded web page/unique IP address for PC access |
| Power Supply |
100-280 V, 50/60 Hz |
