Differential pressure | Air flow | Temperature | Humidity | Air quality Sensing technology for ventilation and air-conditioning

At home all over the world WIKA – your partner for ventilation and air-conditioning WIKA offers you a wide range of measurement solutions for the instrumentation of your ventilation and air-conditioning systems. It includes mechanical and electronic instruments for monitoring pressure, air flow, temperature, humidity and air quality. All products meet the highest demands due to their distinctive measurement and processing quality. Comprehensive support over the entire product life cycle completes the offering. All instrument manufacturing processes are combined under one roof, from development,...

On the road to climate neutrality Precise measurement data increases building performance Around 40 percent of the global final-energy requirement is used in buildings. Many air-conditioning and ventilation systems in public and commercial buildings are not optimally adjusted, contain outdated components or are oversized and are responsible for up to 50 % of energy costs. In order to save energy, buildings today are almost hermetically sealed. The air quality can quickly reach values that impair the well-being and performance of people and can even lead to health problems in the long term. Precise...

Smart sensor portfolio Energy- and cost-efficient automation and control of air-handling units Frost protection Air flow rate control T Frost protection startup control Temperature control with outdoor air temperature compensation Flow reversion of HRS based of temperature difference (ΔT) or enthalpy difference (Δh) between ETA and ODA Frost protection startup control Temperature control with outdoor air temperature compensation Filter monitoring

Smart sensor portfolio Flow reversion of ERS based of temperature difference (ΔT) or enthalpy difference (Δh) between ETA and ODA Frost protection / freezing point calculation with EHA temperature Demand based air quality control Pressure control Humidity control Exhaust air temperature control Δp Air flow rate control Water-side temperature control Water-side temperature control Filter monitoring Demand based air quality control Temperature control Humidity control Pressure control Minimum limit of supply air temperature Supply air temperature control

Future-proof solution Modular, wireless, highly precise Convenient commissioning The differential pressure sensors A2G-500, A2G-520 and A2G-540 can be parameterised via NFC using the WIKA app. Intuitive menu navigation simplifies and shortens commissioning significantly. The parameters of one instrument can also be transferred directly to another instrument. Documentation without gaps Measured values and instrument data can be displayed and read out via NFC and the WIKA app. This enables rapid and complete documentation of all processes. Integration as required The sensors transmit their measured...

Optimally readable display The local display shows up to 4 measured values and 2 relay states. The information can be clearly read from any viewing direction thanks to the 2” TFT colour display with traffic light function and alphanumeric labelling of the measurement parameters. The traffic light function of the display enables unambiguous recognition of critical system statuses at a glance. In a version with 1 or 2 additional relay outputs, the A2G-500 can also be used as a differential pressure switch or 2-point controller - a cost-saving functional expansion. The sensor models A2G-520 and...

High performance in every environment Modular structure, individual design, time-saving mounting Individual design The dials, scales and segments of the differential pressure gauges from the A2G product family can be customised graphically. The instruments can thus be optimally integrated into any system design. Flexible process connection The pressure gauges are available with the usual connections: with a straight or angled threaded pressure connection made of plastic or brass and with a mounting thread for a pipe connection. Small insertion depth The model A2G-05 has a small insertion depth....

Differential pressure gauges Easy alignment and adjustment All differential pressure gauges (except model A2Gmini) can be aligned +/-15 degrees during mounting and the zero point can be adjusted with a screwdriver. Functional limit setting A limit value can be easily set with the red mark pointer. Electrical output signal The A2G-15 instrument version features an electrical output signal. 0 … 10 V or 4 … 20 mA (2-wire) are available. Precise measuring results The optimal coordination of measuring system and diaphragm guarantees a precise measurement. Flexible mounting variants The models A2G-10,...

Process connection Electrical output signal / Switch contacts Special features Measuring range Ingress protection

Inclined tube manometer Wall mounting, easy installation Wall mounting, easy installation Wall mounting, easy installation ■ 2 x screw holes with 0 5.0 mm ■ Sizes > 350 mm have a 0 6.0 mm bolt, washer and nut attached to the other end of the measuring probe to stabilise the measuring probe Connecting nozzle for hoses with inner diameter 4 mm Connecting nozzle, side mount, for hoses with inner diameter 4 or 6 mm Connecting nozzle, lower mount, for hoses with inner 4 mm diameter ■ 4.8 mm brass with barbs for pipes with inner diameter 4 mm ■ Ideal in combination with A2G-520 (differential pressure...

Product overview Pressure Application Differential pressure sensor Differential pressure air flow sensor A2G-520 ■ Measurement of differential pressure, ■ Measurement and monitoring of ventilator gauge pressure and vacuum air flow ■ Monitoring of filters and ventilators ■ Measurement and monitoring of air flow ■ Pressure monitoring in ventilation ducts, in ventilation pipes and ventilation ducts laboratories, production areas and clean in conjunction with the A2G-FM measur- Differential pressure and air flow controller A2G-540 ■ Infinitely variable control of EC ventilators ■ Control of frequency...