The circle = 3
The star = 5
The triangle = 4

for more puzzles check out briddles.com

Temperature is one of the most measured variables in manufacturing. Temperature plays a vital role in efficiency, energy consumption, product quality and safety.

Just some of the places that EAS has installed temperature sensors include:

• Coolstores to monitor product & room temperatures.
• Process lines.
• Clean In Place (CIP) lines to make sure CIP is at the desired temperature, ensuring proper cleaning.
• Milk Lines to ensure the milk is <4 Degrees Celcius.
• Boilers to monitor temperatures, maintaining boiler efficiency.
• Throughout Milk Driers, providing overtemperature deluge alarm status.

There are various types of temperature sensors that can provide you with effective monitoring of temperature in your plant or process and EAS can assist you with selecting the right sensor for your needs.

The most commonly used sensors are Resistance Temperature Detectors (RTDs) and Thermocouples (T/Cs).

Thermocouples (T/Cs) are probably the most used method of temperature measurement. Thermocouples are contact sensors that are basically made up of two wires of different metals and joined at one end. Changes in the temperature at the junction of the dissimilar metals create a change in electromotive force (emf) between the other end and allow temperature to be measured.

There are many different types of thermocouples to fit a wide range of applications suitable for all industries, their appearances can be quite different.

But, as can be seen in the thermocouple diagram below, they all rely on the same basic principles and systems.

Image source: www.nz.rs-online.com/

Two or more dissimilar thermocouple wires form at least two junctions within a circuit. One of these is always kept at a steady and stable temperature – usually lower, but sometimes higher, than the temperature at the measuring (‘hot’) junction.

A voltmeter connected to the circuit reads the current created by electromotive forces because of the temperature differential. This can then be used to give a precise temperature reading.

Resistance Temperature Detectors (RTDs) are also contact sensors. They work on the principle that the electrical resistance of a metal increases as temperature increases – this is known as thermal resistivity. RTDs are made of resistive material such as platinum, copper or nickel depending on the requirements of the process.

The resistance of Resistance Temperature Detector (RTD) changes constantly with the applied temperature so the temperature is quite predictable by measurement of its resistance. It is this property which allows Resistance Temperature Detector (RTD) to measure temperature accurately and consistently.

Image source: www.instrumentationtoday.com

Each type of temperature sensor will work best in a particular set of conditions.  The table below provides an indication of some of the conditions where thermocouples or RTDs are best used as well as the advantages and disadvantages each offers.

As you can see there are many factors that can affect the selection of the best temperature device for your application. EAS can help guide you in selecting the best sensor for your plant or process. Just get in touch with the team on 07 834 0505 or [email protected]

To be eligible for the $20,000 referral bonus the following conditions must be met:

• EAS must employ the person you recommend.
• The referrer must be identified in the covering email sent with the job application.
• Job applications must be received by the close off date.
• The bonus will paid out in increments. $4,000 on the completion of 3 months employment, a further $4,000 after 12 months employment and then $4,000 every 12 months for the next 3 years of employment.
• If the staff member leaves during the payment period, the bonus will be forfeited.

To apply, refer to our job ad on Seek

Answer: 8 Animals. Elephant, Dolphin (trunk), Ant (Trunk), Horse, Dog, Cat, Mouse, Seahorse (tail).

Personally I don’t see an ant, I see a fish – but still got the same total!

Lighting in your workplace is critically important to your staff’s ability to accomplish tasks efficiently and safely. In addition, proper light levels prevent eye strain, which allow us to work comfortably for longer periods of time.

Light is measured using lumens and lux. Lumens are used to measure the amount of light being given out by a bulb.  For example, a High Bay 200 watt LED light gives off 25,000 lumens.

Lux measures the amount of light reaching a surface.  One Lux is equal to one Lumen per square meter.

While some lights may have a high lumen output when first installed, the level of lighting can depreciate quickly, this is another reason why LED lights provide a good replacement option.

The table below highlights the lux levels required to ensure efficient operation of your workplace.

Source of figures: https://www.rexellighting.co.nz/uploads/attachments/Light-Level-Recommendations.pdf

If you are concerned that your lighting is not at the required level EAS can conduct lux measurements to assess your current level of lighting and where improvements may be required.

This can also provide a good opportunity to consider upgrading to LED lights which also offer the benefits of:

• Increased lifespan
  LED lights have a lifespan of 50,000 hours and include a 5 year warranty compared to Metal Halide’s which carry no warranty and have a lifespan of just 5 years. Most Metal Halide light fittings in use today will be past their 5-year lifespan and their lumen output would be well below their maximum output of 32,000 lumens; while still using full power input of 400 watts. The lumen output of a metal halide lamp depreciates much faster than an LED. In fact, they depreciate about 20% each 1,000 hours.
• Reduced Power Consumption
  High bay LED lights have a lumens/watt ratio of 125 vs Metal Halide Light with 80 lumens/watt.

  This means the LED light is 56% more efficient than its Metal Halide counterpart and this efficiency only improves over the lifetime of the fitting as the lumens in a metal halide light depreciate quite rapidly while the LED lumen output hold steady.

• Better Lighting
  LED lights emit light over 180° vs the standard metal halide light which emits light in a 360° range. With the LED light, lighting is being directed where you need it, so your energy consumption is reduced – saving you more money.
• Reduced Maintenance
  With a lifespan of 50,000 hours the LED lamp will require less changes which means less maintenance work for your team and less interruption to your business.

  With LEDs there is also less chance of glass breakage over essential product areas such as bulk stores and process areas in your plant.

If you’d like a lighting assessment conducted at your workplace, get in touch with the EAS team today on 07 834 0505.