- Brand: Michell Instruments
Tags: Liquidew, I.S., Moisture, Liquid, Analyzer, Process, Analyzers, Michell, Instruments
On-line measurement of moisture content in liquids is accurate, fast and
reliable with the Liquidew I.S. Moisture in Liquid Analyzer from
Michell. A wide variety of non-polar liquids can
be measured continuously, on-line, including flammable liquids and
hazardous area applications,
petrochemicals, power industry and pharmaceutical manufacturing.
Product Features
- Simple, cost-efficient operation and low maintenance
- Retrofit functionality, easy to integrate into existing sampling or distribution systems
- High integrity moisture in liquid measurement from 0.01 ppmW to saturation point
- Multi-channel with up to four completely independent measurement channels
- Robust design for undisturbed operation in many non-polar liquids over a long time
- Two 4-20 mA configurable outputs and digital Modbus RTU-based communication
- Replaceable sensor element with Michell Calibration Exchange Service for reliable cost-efficient calibration
- NIST and NPL traceable calibration
- EExd version available
Technical Specification
| Sensor technology | Michell Ceramic Moisture Sensor |
| Sensor version | Easidew PRO I.S |
| Measurement range | 0.001 to 1000 ppmw Higher range on request, actual range dependent on solubility of sample fluid |
| Calibration range | -100 to +20°Cdp (-148 to +68°Fdp) |
| Accuracy | Dew point: ±1°C between -60 and +20°Cdp (±1.8°F between -76 and +68°Fdp) Moisture content: ±10% of reading Dew point: ±2°C between -60.1 and -100°Cdp (±3.6°F between -76.1 and -148°Fdp) |
| Resolution | 0.1°C between +20 and -100°Cdp (0.18°F between +68 and -148°Fdp) |
| Temperature measurement | Pt100 |
| Temperature measurement range | -20 to +70°C (-4 and 158°F) |
| Temperature measurement accuracy | ±0.3°C @ 0°C (±0.54°F @ 32°F) |
| Analysis pressure | Up to 5 MPa (725 psi) |
| Analysis temperature | 0 to +50°C (+32 to 122°F) |
| Sample flow rate | Min 0.01 l/min, max. 10 l/min 0.1 to 0.3 l/min recommended (Min 0.02 scfh, max 21.19 scfh 0.21 to 0.64 scfh recommended) |
| Calibration | Traceable to British (NPL) and American (NIST) National Humidity Standards |
| Certification | |
| Hazardous Area Certification | ATEX - II 1 G Ex ia IIC T4 Ga (-20°C = Ta = +70°C) FM - IS / I / 1 / ABCD / T4 Ta = +70°C CSA - IS Class I Div 1 Groups ABCD T4 +70°C IECEx - Ex ia IIC T4 Ga (-20°C = Ta = +70°C) GOST Ex |
| Pattern Approval | GOST-R, GOST-K |
| Control Unit | |
| Display | Two line 6-digits LED, displaying moisture content / dew point (user toggle) and temperature |
| Analog output | Two 4-20 mA (max. load 500 Ω) - User configured for parameter, unit and range |
| Digital output | RS485 Modbus RTU |
| Display mode | Moisture content (ppmw) Dew point (°C or °F) Temperature (°C or °F) |
| Display resolution | 0.1°Cdp, 0.1°Fdp, 0.001 ppmw, 0.1°C temp |
| Alarms | Four alarm relays. Control action and setpoint are user programmable Two Form C contacts rated 10 A, 240 V AC or 8 A, 24 V DC. Non-inductive load Two Form A contacts rated 5 A, 240 V AC or 4 A, 24 V DC. Non-inductive load |
| I.S. Barriers | Galvanic isolation type, integrated to Control Unit |
| Power supply | 85-265 V AC 50/60Hz or 10-72 V DC 10 W max. power consumption |
| Enclosure | 19" sub rack unit Dimensions 132 x 483 x 375mm (h x w x d) (5.2 x 19.02 x 10.08 in) (100mm (3.94 in) minimum clearance depth for cables and vents) |
| Operating environment | Indoor, safe area, 0 to +50°C, < 90% RH |
| Premium Sampling Systems | |
| Enclosure | 304 stainless steel (EN1.4301) enclosure. Option for complete enclosure in 316 stainless steel (EN1.4401); All fixtures stainless steel; Galvanised steel internal mounting plate; Open panel version available for indoor installation Dimensions 800 x 600 x 300mm (h x w x d) (31.5 x 23.62 x 11.81 in) |
| Enclosure mounting | Stainless steel wall mounting brackets |
| Enclosure ingress protection | IP66 |
| Enclosure temperature control | Heater/thermostat options for fixed set-point +20°C (+68°F) or adjustable set-point range 0 to control 50°C (32 to control 122°F) |
| Heater power supply | 110/120 or 220/240/255 V AC, 50/60 Hz Power consumption 100 W max. |
| Operating environment | Shaded position, on or off shore, -20 to +40°C (-40 to +60°C max. transient) Enclosure cooling option recommended for climate ambient > +50°C (32 to +122°F), < 90% RH |
| Sample cooling option | Recommended for process fluid temperatures > +40°C (+104°F) Plant water supply required, ≤ +30°C (+86°F) |
