Compressor safety with DPTS
Figure 1: An example of DPTS implementation for HVAC-R compressor protection with cloud notification
AUSTIN, Texas, Oct. 13, 2021 (GLOBE NEWSWIRE) — DunAn Microstaq, Inc. (DMQ), a MEMS technology and cloud-based HVAC-R solutions company, offers a compressor safety solution using a digital pressure temperature sensor for residential and commercial HVAC-R systems shown in Figure 1.
The digital pressure temperature sensor (DPTS) can measure one pressure input and two temperature inputs. The DPTS is compatible with all ASHRAE safety group A1, A2, and A2L refrigerants.
Compressor failures in HVAC and refrigeration systems often occur due to liquid refrigerant backflow when 1. evaporator coils are blocked 2. ill-defined expansion valve superheat setting, or 3. refrigerant levels that are too high. Floodback is defined as liquid refrigerant returning to the compressor while the HVAC-R system is running. The best way to protect a compressor from liquid refrigerant backflow is to monitor the compressor suction superheat parameter in real time, this is where the DPTS product comes in handy.
DMQ’s DPTS product provides the most efficient compressor protection solution with autonomous, real-time superheat measurement and setpoints for tripping overheating on backflow. The DPTS can be installed as a standalone intelligent digital sensor switch without complicated logic implementation. The DPTS database is preloaded with 50 types of refrigerants and can be easily installed on the compressor suction line with a ¼” access fitting. If overheating is detected, DPTS sends an OFF signal to the compressor contactor via relay.
The DPTS uses the MODBUS RTU communication protocol. It can be integrated to DMQ’s intelligent HVAC-R cloud solution. The cloud solution tracks the performance of the HVAC-R system in the field and can be easily monitored via a mobile platform. The system notifies you when abnormal performance or trends are detected and can be used for targeted preventive maintenance that can lead to improved overall system performance and cost savings.
About DunAn Microstaq
DunAn Microstaq, Inc. (DMQ) is a MEMS technology company dedicated to advancing flow control solutions primarily for the HVAC, refrigeration and automotive industries. Their pioneering work in micro-electromechanical systems technology, understanding customer needs and experiences translates into benefits that go well beyond flow control. DMQ solutions accelerate product development cycles, bridge design challenges, create warehouse efficiencies and reduce implementation time. With a core technology that is so versatile, DMQ can package its devices along with its detection and control software for custom applications across a wide range of markets. For more information on DMQ products, e-mail [email protected] or visit www.dmq-us.com
Dhaman Kiss Her
Engineering Manager Systems & Applications
A photo accompanying this announcement is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/53e5496f-9bdb-4e2a-8895-2417ada0917a