DHII Series Digihelic® Micro Differential Pressure Controller
product manual:
NEMA 4 (IP66) protection, with large screen LCD display, can output flow signal
The DHII series Digihelic® micro differential pressure
controller combines all the functions of a standard micro differential pressure
controller with a protective housing grade of NEMA 4 (IP66).
It combines 2 single-pole double-throw switches, 4-20mA output, Modbus communication, and 4-digit LCE large screen display in one. Removable terminal strips can be easily plugged directly into the circuit board after external wiring, which is convenient and simple and saves installation time.
The DHII series Digihelic® differential pressure
controller's NEMA 4 (IP66) protection makes it suitable for outdoor installations, especially for roof-mounted air handlers. It can also be surface-mounted for clean rooms or other special occasions.
• Air conditioning units
• Cleanroom
Product parameters:
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
Housing Material: Aluminum, glass.
Accuracy: ± 0.5% at 77 ° F (25 ° C) including hysteresis and repeatability (after 1 hour warmup).
Stability: <± 1% per year.
Pressure Limits: Ranges ≤ 2.5 in w.c. = 2 psi; 5 ": 5 psi; 10": 5 psi; 25 ": 5 psi; 50": 5 psi, 100 ": 9 psi.
Temperature Limits: 32 to 140 ° F (0 to 60 ° C).
Compensated Temperature Limits: 32 to 140 ° F (0 to 60 ° C).
Thermal Effects: 0.020% / ° F (0.036 / ° C) from 77 ° F (25 ° C).
Power Requirements: High voltage power = 100 to 240 VAC, 50 to 400 Hz or 132 to 240 VDC; Low voltage power = 24 VDC ± 20%.
Power Consumption: Low voltage power = 24 VDC-130 mA max; High voltage power = 100 to 240 VAC, 132 to 240 VDC-7 VA max.
Output Signal: 4-20 mA DC into 900 Ω max.
Zero & Span Adjustments: Accessible via menus.
Response Time: 250 ms (dampening set to 1).
Display: 4 digit backlit LCD 0.6 "height. LED indicators for set point and alarm status.
Electrical Connections: Euro type removable terminal blocks with watertight conduit fittings for 1/2 "watertight conduit.
Process Connections: 1/8 "female NPT.
Enclosure Rating: Designed to meet NEMA 4 (IP66).
Mounting Orientation: Mount unit in horizontal plane.
Weight: 2 lb 10 oz (1.19 kg).
Serial Communications: Modbus® RTU, RS485, 9600 Baud.
Agency Approvals: CE, UL.
SWITCH SPECIFICATIONS
Switch Type: 2 SPDT relays.
Electrical Rating: 8 amps at 240 VAC resistive.
Set Point Adjustment: Adjustable via keypad on face.
Professional manufacturing and professional services, KUNAG creates more value for you
Continuously improving the quality of services and keeping improving, "sincere service" is the eternal theme of KUNAG. Kunag strictly complies with the requirements of ISO9001-2000 quality system certification, strictly controls the quality and responsibilities to the people to ensure the healthy operation of production, sales and service. To strengthen communication with customers and to provide our customers with quality products and perfect service, we hereby make the following commitments:
Product Standards
Products are designed, manufactured, and inspected strictly in accordance with China\'s GB, HG standards, and US API standards. The hardness of the sealing surface meets the national requirements and the width exceeds the national standard.
pre-sale service
Product introduction, technical communication, non-standard product design, troubleshooting.
Sale service
Trustworthy contracts, guarantee timely delivery, and keep in touch with customers at any time.
For special or complex products, our factory arranges technicians to train and guide users on product use, troubleshooting, tuning and maintenance.
After sales service
The warranty period of Weitong products is 12 months from the factory, and the "three guarantees" service (return, replacement, repair) is implemented.
During the use of our products, our factory regularly organizes technical and inspection personnel to visit and solicit user feedback on product quality, use conditions, and improvement opinions in order to further improve product quality.
Quickly respond to customer complaints about product quality problems, and after-sales service personnel rushed to the scene within 24-36 hours (48 hours outside the province).
For after-sales service, users are required to fill in the quality feedback form after the service and make appraisal opinions, while improving Guardian\'s service quality.
Order process
Landline: 021-59718851 (AM-8: 30 to PM-17: 30)
Mobile phone: 18918462396 (WeChat same number 24-hour service)
QQ: 2030185432
Email: kunage@126.com
Receive customer purchase list, provide customers with valve model selection and quotation (price list).
Specific agreement: delivery time, special requirements, etc.
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Customers have special requirements for products, and must provide the following instructions in the order contract:
(1) Structure length;
(2) Connection form;
(3) Nominal diameter, full diameter, reduced diameter, pipe size;
(4) Operating medium, temperature and pressure range;
(5) Experiment, inspection standards and other requirements;
(6) Various driving devices can be configured in this field according to the special requirements of customers;
If the determined valve type and model are provided by the customer, the customer should correctly explain the meaning and requirements of its model, and sign the contract under the conditions that the supply and demand sides understand and agree.
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