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Features:
Accuracy up to ±1.7 % RH
Digital probe of the 6600 instruments: can be calibrated and exchanged and is equipped with its own order number
Wall, duct and cable probes, can be configured upon customer request and are heat resistant up to +120 °C
Highest availability by means of early warnings, e.g. in the event of sensor failure, condensation etc. (preventative maintenance)
Different assembly variants:
Wall-mounted version
Duct version
Probe version
Optimum calibration concept with
adjustment of entire signal chain, including analog adjustment, without dismantling the transmitter
1-point adjustment can be performed on-site easily and quickly using t400 or t650
2-point adjustment via P2A software or user menu |
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The Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT330 was developed for demanding industrial applications where stable measurement and wide customization possibilities are important.
As a totally new feature in this product class, the HMT330 has a large numerical and graphical display with multilingual user interface. It allows the user to easily monitor measurement trends with 1-year history.
Vaisala HUMICAP® products have been the market leaders in industrial and meteorological humidity measurements for over a decade.
The new HMT330 series consists of six models covering the full humidity measurement range from 0 to 100 %RH. The temperature ranges are between –70 and +180 °C, and pressure ranges between 0 and 100 bar, depending on the model. In very humid or chemically harsh conditions, Vaisala's unique warmed probe and chemical purge features help to maintain measurement reliability.
The HMT330 can output multiple humidity parameters, and the outputs available include three analog outputs, serial interfaces, and alarm relays. A choice of mains or DC power and several optional mounting accessories make it easy to install the instrument.
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The humidity and temperature transmitters for industrial applications measure relative humidity and temperature f.i. in air and other non-aggressive gases within a (working) temperature range up to 200°C or under pressure up to 25 bar.
Galltec+Mela offer as well versions for applications in gases containing ammonia or transmitters in die cast housing for outdoor use.
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The Ascon’s “H” series includes three humidity transmitters designed to meet the requirements of the HVAC and storerooms applications from the simple ones to the more sophisticated ones.
All transmitters feature a highly accurate capacitive sensor integrated in a silicon microchip. This new technology allows for accurate process measurements, is extremely reliable and offers excellent long-term stability. The sensor is very durable and moisture resistant. For easy and fast replacement the sensor is built into the “Humi-Chip” module, no re-calibration is required. Three types of interchangeable and replaceable filters can be selected depending upon the application, for clean or dusty or aggressive chemicals environments. H1, the simpler model, includes one humidity output and one temperature output. On the other models three outputs are available and configurable for relative humidity, dew point, temperature, temperature and dew point temperature difference. Available output signals are 0/4...20mA 2 wire, 0…1V, 0…5V or 0...10V.
The H3 and H5 models include: configurable alarms with relay output, real time clock and RS485 Modbus RTU for serial communications and configuration. Gateways for Ethernet, PROFIBUS, DeviceNet and CANopen connections are available.
The “H5” model includes alarm events memorization and data logging of the main measurements. For further operator ease of use, on all the models, the relative humidity values can be displayed on the optional integrated LCD display. Housings are IP66 for wall or duct mounting; remote sensor model is also available. |
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Relative Humidity/Temperature Transmitter - Model 657-1
±2% Accuracy, 0-100% RH, Dual Channel Design
Relative Humidity/Temperature Transmitter - Model 657C-1
±2% Accuracy, 0-100% RH, Dual Channel Design, Conduit Housing
Relative Humidity/Temperature Transmitter - Series HU
±2% Accuracy, 0-100% RH, NEMA 4 (IP56) Enclosure
Relative Humidity/Temperature Transmitter - Series RH/RHL
±2% or ±3% Accuracy, 0-100% RH, NEMA 4X (IP65) Enclosure
Relative Humidity/Temperature Transmitter - Series HT
±3% Accuracy, 10-90% RH, 2 Wire Design, Duct or Wall Mount
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| This humidity and temperature sensor with fast reacting capacitve sensor element has been approved for us in areas where there is danger of an explosion. |
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Minco models AH71, AH72, and AH73 are 2-wire temperature compensated humidity transmitters that are FM and CFM approved for use in hazardous locations. Intrinsically safe models are available with an optional temperature transmitter output. The AH73 is also available with an optional digital display for remote indication of relative humidity and temperature.
The transmitters utilize a thin film capacitive humidity sensor which provides outstanding sensitivity and chemical robustness. The transmitter converts the humidity sensor’s signal into a 4 to 20 mA DC current, which changes proportionally from 4 mA at 0% RH to 20 mA at 100% RH. The optional temperature loop produces a second 4 to 20 mA DC output where the current changes from 4 mA at the lowest temperature of the range, to 20 mA at the top of the temperature range. The leads that supply power also carry the current signal.
- Accuracy of ±2.5% RH
- Temperature compensated
- Temperature output option
- One-point field calibration
- NIST traceable calibrations
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Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT360
The HMT360 transmitter can be installed directly into an explosive area, even those classified as having a constant risk of explosion (Zone 0 / Division 1). The HMT360 complies with strict classifications from FM (USA), PTB (CENELEC, Europe), CSA (Canada), TestSafe (Australia) and TIIS (Japan).
Five models are available for a variety of applications:
• HMT361 for wall mounting
• HMT363 for confined spaces
• HMT364 for high pressures (up to 100 bar/1450 psig) or vacuum
• HMT365 for high temperatures (up to +180 ºC / 356 °F)
• HMT368 for pressurized pipelines as high as 40 bar (580 psig)
The transmitters measure relative humidity between 0...100 %RH. As calculated variables they also output dewpoint and wet bulb temperature, mixing ratio and absolute humidity. The structure of the transmitter is modular: the interchangeable probes are easy to remove and calibrate.
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Transmet IS is an easy to install, self-contained dew-point transmitter for the measurement of the moisture content of flammable and non-flammable gases, and has been specifically designed for use within hazardous areas. Housed in a stainless steel case, Transmet IS offers ingress protection to IP66 (NEMA 4). With a wide operating range from -100 to 20 °C dew point and accuracy of up to 1 °C dew point it is the most complete dew-point transmitter available. Transmet IS has a fast response speed that gives the user a continuous measurement in real time. No configuration or calibration is necessary - Transmet IS is delivered configured and calibrated, ready for installation and operation.
Transmet IS is ATEX certified by Baseefa (2001) Ltd for use in hazardous areas to II 1G EEx ia IIC T4 when used with a pair of isolation or shunt diode barriers for signal and power supply connections. In addition to its ATEX certification, Transmet is also FM (Factory Mutual, USA) listed and CSA (Canada) approved.
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New! The Vaisala Combined Pressure, Humidity and Temperature Transmitter PTU300
Vaisala introduces a new generation barometric pressure, relative humidity and temperature transmitter series, the Vaisala Combined Pressure, Humidity and Temperature Transmitter PTU300. The PTU300 features fully digital measuring electronics for all three parameters, several small RH&T sensor heads for different applications, and calculated humidity variables. The new backlit display shows three-hour graphical trends and up to one year of historical data. The recorded measurement data can be viewed on the display or transferred to a PC. Seven languages options are also available.
The PTU has four different probe options: PTU301 for laboratories, PTU303 for outdoor use, the warmed PTU307 probe for demanding meteorology, and the PTU30T for pressure and temperature measurement only.
The Vaisala BAROCAP® sensor is used for pressure measurement and the Vaisala HUMICAP® sensor measures humidity. Both sensors are known for their high accuracy and long-term stability. The temperature sensor is a platinum RTD sensor.
Applications include environmental monitoring in calibration laboratories, GPS meteorology and weather stations.
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| The General Eastern product line offers a broad range of humidity sensors capable of covering virtually any humidity sensing application. These products address both routine and critical applications and can be used in automotive, data-loggers, consumer appliances, residential HVAC controls, medical instrumentation, among other applications. |
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T261 Relative humidity transmitter
Relative humidity measurement
Range: 0...100% RH-20...+80°C
Scale configurable on request:
0...50°C, 0...100°C, -20...80°C, -30... 20°C,
-30... 70°C
Output signal configurable on request: current/voltage depending on version
Power supply: 10...32 VDC
Humidity output signal linearized and compensated from 0 to 60°C via digital processing
Thin-film capacitive humidity sensor
Sensor response time: < 10 seconds
On request, linearization for a specific isotherm
Long-term drift: <2% RH/year
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Typical Applications:
Humidifiers and dehumidifiers
HVAC + Building Management Systems
Meteorology, Storage rooms / Test chambers
Agriculture
Benefits:
Small and rugged, long term stability, competitively priced,
range of output options including 10 bit digital. |
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The relative humidity is in most industry domains and in the quality control a decisive quantity. That is why high requirements relatively to measurement accuracy, long time stability and equipment are postulated for temperature / humidity probes in industrial environments.
The technologically highly up-to-date capacitve humidity sensors used in the TH109 probes fulfill all these requirements. The temperature humidity probes excel also with the following features:
- compact and robust stainless steel housing,
- standardized M12-plug,
- standardized analogue outputs,
- exchangeable filter caps and various fixing possibilities thanks the practical housing form.
The temperature measuring range covers -20°C up to 80°C. The humidity measurement covers the full range from 0% to 100% RH with an accuracy of 2% RH. The areas of application of these probes are for example the climate control, air conditioning and heating installations, building controlling, dryer systems, process controlling, plants construction and in warehouses. Customer oriented solutions are thanks the modular conception realizable.
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Minco humidity and humidity plus temperature transmitters are designed using an advanced microprocessor. Digital signal processing allows these transmitters to precisely match the characteristics of the humidity sensor to a wide range of RH and temperature values found in the many applications the product serves.
The humidity sensor is comprised of an integrated circuit (IC) with a stable polymer element and platinum RTD that is used for temperature compensation. This sensor offers outstanding resistance to airborne contaminant and chemicals, and is protected by a sintered stainless steel filter which resists condensation.
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The HMP228 is a fast, reliable and accurate on-line detection system for water in oil.
Moisture measurements from lubrication oil can significantly cut maintenance costs and prolong machine lifetime. The HMP228 measures water activity and temperature from oil. In connection with oil, water activity measurement offers several advantages compared to the traditionally measured variable, parts per million (ppm). Water activity indicates directly whether there is risk for free water formation. The measurement is independent of the type, aging or temperature of the oil.
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Humidity sensors
