8 Issue 2 2020
cover story
Multi-sensor probe | one meter
H
anna Instruments’ HI98194 is a multi-parameter sensor that operates with one unique meter, which has 12 different water quality parameters. Six are measured, and six are calculated. The meter can store up-to 45 000 samples, either log-ondemand or continuous. Readings are digitally transmitted to the meter. The unit is waterproof and has an IP67 waterproof casing, which can withstand immersion in water at a depth of 1m, for up to 30 minutes. The HI98194 meter, probe, and all accessories are supplied in a rugged carrying case designed to provide years of use. The inside compartment of the
carrying case is thermoformed to securely hold and protect all of the components. The probe cable length is available in various lengths: • 4m • 10m • 20m • 40m The key parameters measured are: • pH • ORP • Conductivity • Dissolved Oxygen • Temperature
general Temperature measurement on ultra-thin glass Optris CTlaser G7 infrared thermometer measures up to 1 200°C
T
ouch displays, such as for smartphones and tablets, use ultra-thin glass, which bring special challenges for temperature measurement technology in their manufacturing. For this application, Instrotech, local representative of Optris – leading manufacturers of noncontact temperature measurement devices – has brought out the new CT laser G7 infrared thermometer. The CT laser G7 can precisely measure the surface temperatures of glass components in the range of 100°C up to 1 200°C. The optimum spectral range, which for flat glass is normally 5 μm, cannot be used for extremely thin glass components due to the higher transmissivity of the material. This was the specific design criteria for developing the CT laser G7, which works at a special wavelength of 7.9 μm. This spectral range is optimised for low-reflection measurement on ultra-thin flat glass. Measurement errors, which are caused by the transmission of radiation, are therefore virtually eliminated. The measurement error is only 1% of the measuring value – or 1.5°C at low temperatures. Double laser makes setup easier The new infrared thermometer has an integrated double laser, which marks the exact measurement location, making setting the application easier.
The smallest size of the measurement spot at a measurement distance of 70mm is just 1.6mm, so that temperature can even be measured on very small objects. With a standardised two-wire interface, the measurement values can be transferred to a supervisory control system, for example a PLC. The output can be adjusted to the exact requirements of the application. In this way, averaging, minimum or maximum value logging, as well as an extended hold function with threshold value and hysteresis are possible. Up to 85°C without additional cooling The CT laser G7 is ideally suited to the environmental conditions which prevail during glass manufacturing. So, for example, with ambient temperatures up to 85°C, it works without additional cooling. For even higher temperatures, a matching cooling housing is available.
INSTROTECH Tel: (010) 595 1831 sales@instrotech.co.za www.instrotech.co.za
Advanced features meet sturdy construction in compact solution Colour coded, field replaceable sensors It features a quick connect that makes a waterproof connection with the meter. Sensors are automatically recognised by the probe and meter when connected. Any ports not used on the probe will not
HI7698194-1 pH and platinum pin ORP sensor
HI7698194-0 Double ceramic junction pH sensor
have the parameter displayed on the meter. Sensor replacement is quick and easy with field replaceable, screw type connectors that are colour coded for easy sensor identification. The rugged waterproof design makes it ideal for field use.
HI7698194-3 Four-ring, stainless steel conductivity sensor
HI7698194-2 Galvanic dissolved oxygen sensor
HANNA INSTRUMENTS JHB: (011) 615 6076 CPT: (011) 946 1722 DBN: (031) 701 2711 hanna@hanna.co.za www.hanna.co.za
W
hy should you compromise accuracy and precision when using a compact balance? Fast and accurate, Highland Precision Compact Balances feature many different applications. With strong ABS construction, an audible alarm that warns users if capacity is exceeded and its patented ShockProtect® feature that offers advanced overload protection, the Highland is well-suited for rigorous weighing demands in laboratories or on the field. The stainless steel pan is resistant to corrosive materials and easy to clean. Percentage weighing simplifies formulation applications for creating ointments, medical compounds or chemical mixtures, while the accumulation feature allows users to keep a running total of the weight. Parts counting can streamline compounding tasks or pill packaging for pharmaceutical applications. Below-balance weighing allows for density measurements and specific gravity calculations. HandiCal® ensures
internal calibration can be done without external weights, which can come in handy in busy labs. The draft shield helps prevent samples from being moved due to vibrations and air currents, and the balances can be stacked during storage without damaging the load cells. For true portability, the balance’s internal battery can last up to 24 hours. RS-232 and USB interfaces allow for data communication with computers, printers and data collection software like AdamDU. They’re frequently used in material testing, manufacturing, jewellery, and education. Like all Adam balances and scales, Highland balances are compliant with the latest NRCS regulations regarding electrical safety standards, which is a legal requirement in South Africa for all weighing equipment. Make sure your next balance meets these legal standards.
ADAM EQUIPMENT SA Tel: (011) 974 9745 sales@adamequipment.co.za www.adamequipment.co.za
