Dewpoint – Transmitters
The HygroPro is a loop-powered, intrinsically safe moisture transmitter for measuring the moisture content in gases and non-aqueous liquids in pipeline natural gas, petrochemical, power generation, pharmaceutical, process, and industrial applications. The HygroPro features an aluminum oxide moisture sensor, temperature thermistor, and pressure transducer built on a single probe mount to provide real time measurements for the calculation of parameters such as ppmv in gases, pounds per million standard cubic feet in natural gas, ppmw in liquids and percent relative humidity in addition to dew point temperature.
HygroPro Specifications
Dew Point/Frost Point Calibration Ranges |
|
---|---|
Operating Temperature |
|
Operating Temperature | –4°F to 140°F (–20°C to 60°C) |
Warm-Up Time | Meets specified accuracy in three minutes |
Calibrated Accuracy @ 77°F (25°C) |
|
Repeatability |
|
Response Time | Less than five seconds for 63% of a step change in moisture content in either wet-up or dry-down cycle |
Electrical
Power |
|
---|---|
Display |
|
Mechanical
Sample Connection |
|
---|---|
Operating Pressure | 5 :Hg to 5000 psig (345 bar) |
Enclosure | Type 4X/IP67 |
Dimensions (h x w x d) |
|
European Compliance | Complies with EMC Directive 2004/108/EC and PED 97/23/EC for DN<25 |
Hazardous Area Certification |
|
Moisture Sensor
Sensor Type | Thin-film aluminum oxide moisture sensor |
---|---|
Calibration | Each sensor is individually computer-calibrated against known moisture concentrations, traceable to NIST. |
Calibration Interval | Sensor recalibration by GE is recommended every six to twelve months depending on application. |
Flow Rate | Gases: Static to 100 m/s linear velocity at 1 atm |
Built-In Temperature Sensor
Type | NTC thermistor |
---|---|
Operating Range | -22°F to 158°F (-30°C to 70°C) |
Accuracy | ±0.9°F (±0.5°C) overall |
Response Time (Maximum) | One second in well stirred oil or 10 seconds in still air for a 63% step change in increasing or decreasing temperature |
Built-In Pressure Sensor
Type | Solid state/piezoresistive |
---|---|
Available Ranges |
|
Accuracy | ±1% of full scale (FS) |
Pressure Rating | Three times the span of the specified range to a maximum of 7500 psig (518 bar) |
HygroPro is suitable for a variety of applications, including:
- Pipeline natural gas
- Petrochemical
- Power generation, pharmaceutical
- Process
- Industrial applications
MMY30
The MMY30 is specifically designed to measure dew point or ppm at line pressure or atmospheric pressure for control of desiccant air dryers. These benefits apply to both dryer users and manufacturers.
- Simple, 4-20 mA two-wire connection
- Fast response planar sensor
- Integral filtering and flow regulation
- Trouble-free indoor or outdoor mounting
- Field calibration with the optional DewComp(MCY40)
- Microprocessor in NEMA 4X (IP66) enclosure
- FM approval (Class 1) – Division 2 standard
MMY31
The MMY31 mounts directly in-line for applications such as glove boxes, where a bypass is not appropriate. It is easily installed via a 1/2″ MNPT or G 1/2 adjustable insertion length compression fitting. Applications include glove boxes, environmental chambers, and high altitude testing.
- 4 to 20 mA loop-powered 1/2″ MNPT or G 1 / 2 process connection Planar capacitive sensor
- Class 1, Division 2 standard
Veridri Moisture Transmitter
- 4 to 20 ma loop powered
- 3/4-16 Straight thread with optional 3/4″ NPT adapter
- Thin Film Aluminum Oxide Technology
- General Purpose
coming soon
coming soon
coming soon