![Series 616W | Positive, negative and differential pressures can be measured within a full span accuracy of ±0.25. | Dwyer Instruments Series 616W | Positive, negative and differential pressures can be measured within a full span accuracy of ±0.25. | Dwyer Instruments](https://dwyer-inst.com/images/Medium/616W_Front.gif)
Series 616W | Positive, negative and differential pressures can be measured within a full span accuracy of ±0.25. | Dwyer Instruments
![Series AT-2000 | ATEX/IECEx Approved Magnehelic® Differential Pressure Gages combines the popular Magnehelic® line with a flameproof enclosure to extend usage to hazardous locations. | Dwyer Instruments Series AT-2000 | ATEX/IECEx Approved Magnehelic® Differential Pressure Gages combines the popular Magnehelic® line with a flameproof enclosure to extend usage to hazardous locations. | Dwyer Instruments](https://www.dwyer-inst.co.uk/images/Medium/AT-2000_1000x1000.jpg)
Series AT-2000 | ATEX/IECEx Approved Magnehelic® Differential Pressure Gages combines the popular Magnehelic® line with a flameproof enclosure to extend usage to hazardous locations. | Dwyer Instruments
![Series 647 | Wet/Wet Differential Pressure Transmitter monitors pressure in air/liquid flow systems. Used in flow, process control, HVAC automation, and pneumatic systems. | Dwyer Instruments Series 647 | Wet/Wet Differential Pressure Transmitter monitors pressure in air/liquid flow systems. Used in flow, process control, HVAC automation, and pneumatic systems. | Dwyer Instruments](https://www.dwyer-inst.co.uk/images/addtl/647_600x600.gif)
Series 647 | Wet/Wet Differential Pressure Transmitter monitors pressure in air/liquid flow systems. Used in flow, process control, HVAC automation, and pneumatic systems. | Dwyer Instruments
![Model 460 | Air Meter/Draft Gage is popular for servicing air conditioning, heating and ventilating equipment. Gives consistent, accurate results with no tedious calibration. | Dwyer Instruments Model 460 | Air Meter/Draft Gage is popular for servicing air conditioning, heating and ventilating equipment. Gives consistent, accurate results with no tedious calibration. | Dwyer Instruments](https://www.dwyer-inst.co.uk/images/Medium/460_Kit_1000x1000.jpg)
Model 460 | Air Meter/Draft Gage is popular for servicing air conditioning, heating and ventilating equipment. Gives consistent, accurate results with no tedious calibration. | Dwyer Instruments
![Series 4000 | Capsuhelic® Differential Pressure Gage is designed to give fast, accurate indication of differential pressures. Measures flowing fluids, pressure drop across filters, and liquid levels in many applications. | Dwyer Instruments Series 4000 | Capsuhelic® Differential Pressure Gage is designed to give fast, accurate indication of differential pressures. Measures flowing fluids, pressure drop across filters, and liquid levels in many applications. | Dwyer Instruments](https://www.dwyer-inst.co.uk/images/addtl/Capsuhelic_600x600.gif)
Series 4000 | Capsuhelic® Differential Pressure Gage is designed to give fast, accurate indication of differential pressures. Measures flowing fluids, pressure drop across filters, and liquid levels in many applications. | Dwyer Instruments
![Series 475 | Intrinsically Safe Handheld Digital Manometer measures air and natural gases. Applications include field calibration of other instruments, monitoring or troubleshooting HVAC systems. | Dwyer Instruments Series 475 | Intrinsically Safe Handheld Digital Manometer measures air and natural gases. Applications include field calibration of other instruments, monitoring or troubleshooting HVAC systems. | Dwyer Instruments](http://www.dwyer-inst.com/images/addtl/475_1_FM_1000x1000.gif)
Series 475 | Intrinsically Safe Handheld Digital Manometer measures air and natural gases. Applications include field calibration of other instruments, monitoring or troubleshooting HVAC systems. | Dwyer Instruments
![Series RSME | Designed for low differential pressure applications that require stringent pressure monitoring and alarming. | Dwyer Instruments Series RSME | Designed for low differential pressure applications that require stringent pressure monitoring and alarming. | Dwyer Instruments](https://www.dwyer-inst.co.uk/images/Medium/RSME_Plastic_Front_1000x1000.jpg)
Series RSME | Designed for low differential pressure applications that require stringent pressure monitoring and alarming. | Dwyer Instruments
![Dwyer Instruments Ltd | Rate Master flowmeters, Magnehelic pressure gages, Photohelic switch/gages, Hi-Flow valves, transmitters, pressure switches Dwyer Instruments Ltd | Rate Master flowmeters, Magnehelic pressure gages, Photohelic switch/gages, Hi-Flow valves, transmitters, pressure switches](https://images.findtheneedle.co.uk/findtheneedle//products/6304137.jpg)