Dew point meter for use in hazardous areas
ExMa
3 self-configurable power modes
ATEX certified
integral flow control
4-20 mA, RS232 and 3 alarm outputs
A dew point meter for use in hazardous areas.
The ExMa is an explosion-proof dew point meter which can be installed in either indoor or outdoor applications. This cost-effective solution provides a complete on-line system, with built-in filtration, flow regulation and flow meter.
The ExMa can be configured to act as a loop powered transmitter or, when powered with either mains supply (90 to 260VAC) or a DC (12-24VDC), the outputs include 4-20 mA, RS232 and 3 alarm relays. The onboard display and user interface has through-glass touch user buttons for easy configuration in the field.
With an impressive measurement range of -110 °C to +20 °C dew point, this compact system offers fast, accurate and repeatable results.
GENERAL |
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Measurement |
°C and °F dew point, ppmV, ppmW, µB H2O vapour pressure, grams of H2O/m3 and Lbs H2O/106 standard cubic feet in natural gas. |
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Measurement principle |
Nanosensor Aluminium Oxide |
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Configuration |
On-line |
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Moisture range |
-110 to + 20 °C dew point |
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Temperature range |
-40 to + 70 °C |
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Pressure range |
2 to 1000 PSIA |
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Moisture accuracy |
±2 °C temperature corrected |
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Temperature accuracy |
±2 °C |
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Pressure accuracy |
±1 % |
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Resolution |
< 0.01 °C |
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Repeatability |
0.8 °C |
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Sample flow |
> 1 LPM |
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Response time |
95 % of step change in 3 min. |
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Process temp. range |
-20 to +60 °C |
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Ambient temp. range |
-40 to +85 °C |
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Certification |
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European |
CE marked |
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IP rating |
IP66 & IP68 |
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FM/CSA rating |
Class I, Div I, Groups B, C and D. Class II, III, Div 1, Groups E, F and G pending |
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ATEX |
ATEX 2 GD, Exd I & IIC. IECEX, Exd I & IIC pending |
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Calibration |
NIST traceable (NPL traceable option) |
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Shipping |
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Shipping weight |
2.5 Kg |
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MECHANICAL |
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Dimension |
226 L x 147 W x 147 H mm |
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Connections |
3/4" OD tube and 1/4" NPTF Inlet, 1/8" NPTF Outlet |
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Enclosure material |
Aluminium or optional 316 stainless steel, glass lens |
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Material (wetted parts) |
316L stainless steel and PTFE |
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Pressure |
Inlet 2000 psi, outlet 50 psi |
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ELECTRICAL / UTILITIES |
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Power voltage |
3 automatic detection, self configuring power modes. 1) 90 to 260 VAC 47 to 440 Hz. 2) 12 to 24 VDC 10 VA. 3) 4/20 mA loop-powered without display. |
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Outputs |
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Current |
Modes 1 or 2: RS-422 isolated, 4 to 20 mA sink or source with HART®, 3 alarm relays - 3A, 250 VAC contacts |
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All specifications subject to change |
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