Instrumentation
on the Vaisala-Veriteq acquisition: the traditional Vaisala instruments, Veriteq loggers and viewLinc software have now been integrated into one solution, providing more options and versatility for pharmaceutical and biotechnology customers.
Portable power GE’s new PM880 AC hygrometer is a complete, portable system with options and accessories to meet all industrial moisture measurement needs. This hygrometer is small, lightweight, and easy to use. The large LCD displays moisture readings in dew point (°C or °F), ppmv, ppmw, lb/MMSCF (natural gas), and a variety of other unit options. Data can be viewed in alphanumeric or graphic formats. A 120 or 230v AC power supply allows for continuous operation of the analyser. The PM880 AC comes in a soft carrying case with
zippered compartments, a handle, and a shoulder strap. The case accommodates the PM880 AC, a sample system, flexible hosing, probes with protective covers, a moisture image series probe electronics module, an operating manual, power supply, and probe cables. The carrying bag is safe for transporting the PM880 AC and accessories around a site. This rugged, line-powered, portable hygrometer measures
moisture in gases and non-aqueous liquids. It is used in conjunction with moisture image series (MIS), TF and M series moisture probes for applications including: chemical and petrochemical gases; non-aqueous liquid applications; air separation plants; tanker preparation and filling; industrial gases; gas cylinder preparation and filling; furnace gases/heat treating; and general plant/facility maintenance. GE’s moisture monitor series 35 IS (MMS 35 IS) portable
hygrometer is certified intrinsically safe, is battery powered, and is housed in a damage-resistant case. When purchased with the internal sample system option, a built-in moisture
Focus on accuracy and linearity
M
ichell Instruments offers a wide range of humidity sensors, including the PCMini52 digital relative humidity and temperature mini probe with analogue output. The microprocessor control and multi-point calibration gives the PCMini52 RH probe excellent performance in terms of accuracy and linearity. The mini probe can provide two linear analogue outputs for temperature and relative humidity, dew point or absolute humidity. Outputs can be set at percentage RH, calculated absolute humidity, dew point or wet bulb temperature. The device also offers excellent linearity, low power consumption, fast settling time, and small size. The company’s PF211 relative humidity probes are equipped with the Hygrosmart relative humidity sensor/converter. This interchangeable module has miniaturised electronics and does not require recalibration. Designed for HVAC and environmental control applications, this device is based on the interchangeable Hygrosmart module. The PC series offers a comprehensive range of relative humidity probes for accurate, stable and repeatable measurements. Available with analogue or digital output signals, the PC series can be installed in a wide variety of applications. The PC62, for example, is designed for highly accurate measurements in precision manufacturing applications Digital or analogue output possible with this model, which also calculates absolute humidity, dew point, or wet bulb temperature. ■
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probe and sampling system with process connections are included, making it a completely self-contained hygrometer system. If purchased without the internal sample system package, the MMS 35 IS requires an external moisture probe connected to the hygrometer by a cable. Other options include computer-enhanced response, data-
logging capability and a carrying case that provides protection for the instrument in addition to convenient pockets for accessories. In terms of applications, this model is designed for
portable installations and is used in conjunction with M Series moisture probes for industries including petrochemical, industrial gas, furnace gas/heat treating, power generation, air drying, and pharmaceuticals. Meanwhile the company’s DewPro MMY245 moisture
analyser is a convenient, portable instrument that can quickly spot check the performance of gas dryers for compressed air, breathing air, and pure gas supplies. The planar capacitive sensor combines accurate dew point measurement with fast response time. The sensor is stored in a very dry environment within the analyser between measurements, which speeds response time. The MMY245 can be configured according to the desired
moisture unit of measure, temperature unit of measure, or other operating parameters. An optional pressure sensor provides real-time correction for concentration units of measure or a pressure constant for use with stable pressure measurements.
Cable mounted probe New from Rotronic, the HygroFlex7 is designed to defy all adverse conditions as the company’s engineers have managed to make it even better than its predecessor. For example, the HygroFlex7 with cable mounted probe can withstand temperatures of -100-150°C whereas the wall version can be integrated into applications covering the range of -80-100°C. The humidity range is 0-100% RH, the humidity accuracy ± 1% RH; and the temperature accuracy within ± 0.2K. The model range is available as a wall, cable and duct
version and with the optional HW4 software, many useful functions can be activated, such as an automatic sensor test or drift compensation. In addition to that, the output signals are freely scaleable. Rotronic also produces a range of handheld instruments
suitable for all applications, especially where precise measurement of humidity and temperature is of importance; for example the food and pharmaceutical industries, printing and paper industries, climatic testing, research, education, sciences, meteorology, agricultural sector and climatology. These products are described in two groups. The first
concerns climate measurement. Here HygroPalm is the very latest in handheld instrument technology with the highest performance specifications. Digital interchangeable probes simplify calibration and enable the user to fit alternative probes to suit different applications. The second is RH measurement in paper and card, the current range for which offers optimum features for production, quality, merchant and consultant users. Handheld instruments are also used to measure moisture levels in products such as powders, granules, seeds, food and pharmaceuticals. ■
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