Category Archives: Sensors

Measuring in clean rooms – Hands on with the Rotronic CRP5

For many years Rotronic products have been widely used in the monitoring and control of clean rooms, however more often than not our products are found out of sight quietly performing their measurement tasks away from areas with strict requirements for cleanliness demanded by modern clean rooms.

In the past few months Rotronic have launched two new clean room panels that are as the name suggests designed specifically for use within clean room environments.

Our flagship product in the field is the CRP5 which we will take a look at first.

crp-5_pfad
CRP5 – Clean room From Rotronic

The CRP5 is a comprehensive clean room panel designed specifically for the requirements of modern clean rooms. Once installed the unit provides virtually no areas for dust to collect and the industrial glass front is extremely resistant to chemicals. With a fully configurable colour screen it is a stylish looking device!

CRP1a
Unpacking the CRP5, the glass front, colour display and stainless steel fittings make the CRP5 elegant, easy to clean and functional

Internally the CRP5 delivers some serious capability, providing potentially a solution for all your clean room measurement and monitoring requirements. Including;

  • Differential Pressure via internal diaphragm sensor (measurement via rear ports and front ports for flexible instalation and calibration).
  • Interchangeable humidity and temperature sensor.
  • Two fully configurable analogue inputs (for particle counters, lux meters etc)
  • Two configurable switch inputs (for pressure or door switches etc)
  • 6 configurable relays (for alarm triggers)
  • Digital connectivity via RS485 and Ethernet (Modbus or direct connection to Rotronic HW4 software)

A unique feature of the CRP5 is the optional flush mount humidity probe. The probe is locked into place through the use of magnets and can easily be removed for cleaning or calibration. An optional rear mount connection is available for Rotronic HC2 humidity and temperature probes should you wish to monitor ducts or spaces remote to the CRP5 itself.

CRP2
The unique removable Humidity and Temperature probe for ease of cleaning and calibration

The configurable colour display shows alarm conditions which can be acknowledged via the front panel. Alarms can be used to trigger relays associated with audible and larger visitual alarms. Interaction with the CRP5 is via four optical buttons –  their use is completely unaffected if operators are wearing protective gloves or not (unlike capacitive interfaces).

CRP3
Optical buttons can be used easily even when wearing gloves!

As an FDA and Gamp5 compliant device the CRP5 is a safe choice for regulated industries. The instrument can be used with 3rd party systems via its analogue outputs or industry standard Modbus TCP / RTU communication. Alternatively the CRP5 can be connected to the Rotronic HW4 software package to provide a one stop solution for monitoring, control and alarming. Pharmaceutical validation services as well as ISO 17025 (UKAS) calibrations are available from Rotronic if required.

To get some more detailed information about our clean room solutions give us a call or visit our website… Rotronic Website and CRP5 Datasheet

Next time we will look at the Rotronic CRP1 a dedicated temperature and humidity clean room panel for  applications with slightly simpler requirements but still demanding a clean installation  and high accuracy measurements!

crp1_side
The CRP1 – Humidity and Temperature measurements in clean rooms.

Dr Jeremy Wingate
Rotronic UK

Rotronic training course schedule 2016

We are pleased to announce our latest training course schedule for 2016. Courses include in partnership with Dave Ayres from Benrhos Ltd our practical 3 day temperature, humidity and dew point calibration and measurement uncertainty courses. In addition, for those seeking greater depth we are running dedicated courses on measurement uncertainty and ISO 17025 run by Lawrie Cronin and Dave Ayres

Temperature Humidity and Dew Point – Measurement, Calibration and Uncertainty

8th – 10th March :: 12th – 14th July :: 15th – 17th November
– Three day course at Rotronic UK offices and UKAS laboratory
– Practical applied knowledge and best practice
– Max 8 attendees to ensuring tailored content

Measurement Uncertainty for Laboratories and Plant

6th – 7th September
– Two day course at Rotronic UK offices
– Detailed knowledge for laboratory owners or process managers

Setting up and working with ISO17025

8th September
– One day course at Rotronic UK offices
– Ideal for ISO17025 lab managers or those looking to apply

For further information please do not hesitate to contact us.

 

Energy Efficiency and Indoor Air Quality

Some of the key factors for improving energy efficiency in relation to indoor applications are the control of Relative Humidity (RH) and temperature. The question is, how to control RH to acceptable levels in an energy efficient manner. Energy efficient humidity control has a very strong bearing on thermal comfort, Indoor Air Quality (IAQ) and eventually on the health and performance of occupants in air-conditioned buildings.

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Passivhaus buildings are built to a voluntary standard to improve energy efficiency and reduce ecological footprint.

IAQ control seeks to reduce Volatile Organic Compounds (VOCs), and other air impurities such as microbial contaminants. As such it is important to control relative humidity which can be a key factor leading to mould growth and the presence of bacteria and viruses, dust mites and other such organisms.

Buildings rely on a properly designed ventilation system to provide an adequate supply of cleaner air from outdoors or filtered and recirculated air

TrueDry_DR120_HR

Buildings may rely on dehumidifiers like the one above to reduce RH levels to a comfortable range

Air-conditioning systems typically employ a high level of air recirculation to save energy during cooling and dehumidification. Typically recirculation rates are around 80-90%, but can sometimes be even higher. The challenge is not so much in dehumidification, but in doing so without having to overcool. As such, ventilation is integrated for general comfort and economical saving.

Rooms are often designed with specific conditions in mind including temperature, humidity, brightness, noise, and air flow. Careful engineering and implementation of building automation and control is the only way to ensure energy efficiency and building operation conditions are met during occupancy, at the lowest possible costs.

IAQ Facts:

Energy Efficiency (EE) refers to either the reduction of energy inputs for a given service or the enhancement of a service for a given amount of energy inputs.

Relative humidity is highly temperature dependent, so if the temperature is stable, it is much easier to achieve a stable RH.

Air in our atmosphere is a mixture of gases with very large distances between molecules. Therefore, air can accommodate a large quantity of water vapor. The warmer the air, the more water vapor can be accommodated.

Why the need to measure, temperature and relative humidity?

Precise temperature control of air which is supplied to a room results in maximum comfort for the occupants. The temperature should be held constantly at a particular set point to achieve this comfort.

Readings from temperature transmitters installed in the air supply duct are compared to readings inside a particular room. It is easiest to achieve a constant room temperature if there is little difference between the two values. Air temperature control in supply ducts can be employed in rooms in which the air handling unit is used mainly for the renewal of air.

hf3_2_o_display_1

Rotronic manufactures temperature and humidity transmitters such as the one above which are suitable for use in spaces where appearance is a factor.

It is with good RH control that we can process the air for air conditioned rooms independent of the state of outside air and the processes taking place in the room. This way the RH remains constant or within the preset limits and thus energy consumption for humidification and dehumidification is minimized.

Air conditioning is supposed to maintain room temperature and RH as precisely as possible through the use of systems which monitor and control temperature and humidity in the room (or in the air supply ducts to the room). Systems must be dynamic to manage the changing room air quality depending on the occupants and usage.

With precise measurement and control of temperature and humidity, energy consumption for humidification & dehumidification as well as heating and cooling can be reduced leading to energy efficient building operation with lower energy costs and healthier occupants.

Phil Robinson
Rotronic UK

Pharmacy Business Case – MEDICINES NEED WATCHING – CLOSELY!

Business Case BannerColleagues from our Swiss based HQ just outside Zurich have shared with us a great example of an increasingly important application based around the monitoring of medicines in typical high street pharmacies. Pharmacies may look like they simply store medicines on normal shelves but most drugs require strictly controlled and monitored conditions to ensure they reach us in perfect condition! Read on to discover more…

Medicines are sensitive products. Moisture or excessively high or low storage temperatures, can impair their quality. Incorrectly stored medicines lose their efficacy, leading to significant health risks. Correct storage is therefore vital, offering as it does the guarantee that medicines remain safe and efficacious and retain their high quality right up to their expiry date.

Meeting GDP/GMP requirements in pharmacies

The storage of medicines is legally regulated by GDP (Good Distribution Practice) Standard 9.2 and is inspected by the responsible authorities on site.

Insulins and other liquid antibiotics for instance must be stored in medicine refrigerators at a temperature between 2 °C and 8 °C. A temperature range of 15 °C to 25 °C applies to the vast majority of other medicines.It is compulsory to document the storage conditions of all medicines.

To help fulfil the legal requirements, Rotronic has launched the new HL-1D data logger – a convenient, precise, reliable logger that is virtually tailor-made for a medicinal environment.

Rosengarten Rotpunkt pharmacy

The HL-1D data logger has undergone exhaustive testing
under real-life conditions in the Rotpunkt Rosengarten
pharmacy. With its simple handling and remarkable price-performance ratio, the logger offers great potential for any pharmacy.

The Rosengarten Rotpunkt pharmacy is deeply rooted in the community of Bassersdorf, Switzerland and has been at its present location since 1985.

In 2011, Mr. Ivan Mihajlovic took over the directorship and today runs the pharmacy with a total of 10 employees.

Mr Ivan Mihajlovic
Mr Ivan Mihajlovic

“The quick evaluation of the data and the understandable visualization of the measurement values in a PDF report meet all QMS requirements and document the data long-term.”

HL-1D ideal for Pharmacies

Complete measurement chain

Rotronic offers complete solutions for the entire measurement chain. Even if you are already using other data loggers successfully, we have a range of innovative calibration solutions.

HL-1D for pharmacy

If you require more information or wish to discuss any monitoring, control or calibration applications you may have please do not hesitate to contact us.

Dr. Jeremy Wingate
Rotronic UK

What is Dew Point Temperature

Our state side colleagues have put together a great FAQ technical note explaining dew point temperature in more detail!

chilled mirror / dew point mirror
chilled mirror / dew point mirror

The FAQ technical note can be accessed here and answers the following key questions!

  1. What is dew point temperature?
  2. What is frost  point?
  3. When should I choose dew point as the parameter I measure?
  4. What are the pros and cons of measuring dew point versus relative humidity?
  5. Does dew point change as the ambient temperature changes?
  6. How does pressure affect dew point measurement?
  7. What are the common technologies for measuring dew point?
  8. Isn’t dew point temperature the same thing as wet bulb temperature?
  9. How do I know which technology is best for my application?
  10. Where can I buy a dew point instrument?

Rotronic produce precision low dew point sensors for low moisture applications in addition Rotronic UK is the UK distributor for world class MBW chilled mirrors, please contact us for additional information!

Dr Jeremy Wingate
Rotronic UK

Temperature, Humidity and Ceramic drying

Introduction

Ceramic drying is one of the most important processes in ceramic production technology. Quality defects of ceramic products are caused by improper drying. The drying affects the quality of the finished product, the throughput but also the overall energy consumption for ceramic manufacturing enterprises. According to various statistics, generally energy consumption during drying processes represents 15% of total industrial fuel consumption. However within the ceramic industry, the energy consumption used for drying accounts for a much higher percentage of the total fuel consumption. Therefore energy saving within the drying process is extremely important for all enterprises. Drying speed, reducing energy use , ensuring high quality products and reducing  pollution are all  basic requirements for any ceramic manufacturer today.

Measurement and Control in Ceramic Dying

Ceramic production is done through several main processes: casting, drying, glazing, firing…

The casting and drying are important processes for ceramic. A forming workshop is equipped with an intelligent control system. The control system regulates the relative humidity value using information provided via room and process sensors. Sensors have to measure accurately ad repeat ably despite the challenging and often dusty conditions. Humidification and dehumidification processes require substantial energy so tighter control is a huge energy saver for these industries.

A constant temperature is also achieved via the intelligent control system. With a stable temperature and stable relative humidity within the workshop, manufacturers ensure the quality of  the ceramic body drying.

After stripping the body from the cast, the body contains a very high relative humidity level. During the drying process, the body may crack or deform due to the speed in which the product is dried (volume and shrinkage) which ruins the product and decreases the throughput.

Exactly this part of the process has become a major bottleneck within the production process of ceramic products.

In a casting workshop, stable environments can reduce the cracking and deformation effectively. It also improves the throughput rate of semi-finished products and shortens the drying period, also prolonging the life frame of the  plaster cast.

So constant temperature and  relative humidity according to the set values will help all factories to improve the throughput, reach an optimal drying speed and deliver the best quality results available.

How can we help?

Rotronic provides a range of instruments for environmental monitoring and control.

Rotronic HC2-IC industrial temperature and humidity probes, are successfully working in these tough applications, the probes are installed on the roofs of drying chambers and resist chemical pollution. With a flexible  HF5  transmitter, the outputs can be set to the customers requirements.

With both digital and a range of analogue outputs available as well as several probe mounting options, products can be selected for all applications.

Measurement data can be viewed on HF5 with display or remotely via HW4 software. Ease of calibration and sensor replacement ensures down time is kept to an absolute minimum.

Dr Jeremy Wingate
Rotronic UK

 

Monitoring Transportation

Rotronic has recently released a cold chain logger which can be used to ensure items are kept at the correct temperature during transportation.

tl-cc1_0094Rotronic cold chain logger

Transportation in general

One key aspect of today´s wealth in the modern world is specialization. So towns, regions or even whole countries focus on a few things they are really good at. This can be based on various factors; for example resources offered by the land, climatic conditions or specific knowledge that has been developed over a long period and has been passed on from generation to generation. As an example, Cuba provides brilliant conditions for the Corojo and Cirollo plants, better known as tobacco. Although smoking is quite popular among Cubans, their production of tobacco exceeds the local demand by far. On the other hand they lack other resources and goods. At that point trading, and therefore the importance of transportation, comes into play. In the case of the tobacco the transportation is not a simple task, since it requires a constant high humidity level to maintain the high quality expected from a Cuban cigar.

Tobacco-Fields-in-VinalesTobacco plants in Cuba

Like tobacco there are many products where special requirements for shipping have to be put in to consideration, in order to maintain freshness, internal integrity, colour quality or whatever other properties that could be affected by an inappropriate transportation.

Facts & figures:

A major step in the transportation industry was the international standardisation of shipping containers in 1955. This means that one container can be put directly from a vessel to a truck and transported all around the globe.

Today 28´000´000 ISO containers (20 feet) are permanently on the move, transporting goods from point to point keeping our economy running.

Every year 10´000 shipping containers fall over board.

0.16 Euro cents is the cost of transporting a bottle of Chilean whine to Europe.

Why the need to monitor transportation?

Various factors can have a negative impact on a product during transportation. Below are the most common parameters to be monitored to ensure product quality:

Temperature

Controlling temperature is the key in transporting fresh foods, where the rate of decomposition is reduced significantly by maintaining lower temperatures. It is also important as proof of an uninterrupted cool chain for frozen products or to ensure the effectiveness of medication.

truck_insidesthe back of a temperature controlled lorry.

Humidity

Monitoring humidity ensures that the growth of micro organisms in food and medications remains below critical levels. Controlling humidity also helps to maintain structural integrity of paper and cardboard or to avoid corrosion of metals during a long transatlantic journey in a shipping container.

Pressure

Apart of being able to reconstruct when and how long a parcel`s flight was, pressure is also en essential parameter for products that have to be transported in a vacuum or pressured chamber. This method could for example be used when transporting biological samples or hazardous chemicals.

Shock

To guarantee that expensive machinery, glass, works of art and other delicate products weren’t damaged during transportation, monitoring of the G-force in all three axis is the solution.

Rotronic-HygroLog-Log-HC2-P1-Universal-Humidity-and-Temperature-Data-Logger-Humidity-and-Temperature-Measurement---Large-21391770915

 

The Rotronic LOG-HC2 can log light, temperature, humidity, pressure, and shock.

Light

Light is a good parameter to determine if or at what time a container or package was opened. Also to ensure protection of light sensitive products such as vegetable oils, chemical substances or photo paper.

Philip Robinson                                                                                                       Rotronic UK