DN25 RS485 4-20mA Digital Ultrasonic Heat Meter Description
RC82 series ultrasonic heating (cooling, heating-cooling)
instrument is used for energy measurement of heating or cooling
water in residential and small commercial heating and air
conditioning systems. Their model is DN25, and there is an
electronic energy calculator with a separate RS485 and 4-20mA
interface. They form a dual output of RS485 and 4-20mA.
DN25 RS485 4-20mA Digital Ultrasonic Heat Meter Features
1. Internal 3.6V lithium battery power supplying;
2. Calculator case's unique design, users can meet multi-angle data
is read;
3. Support supply water and backwater pipeline position
installation to satisfy users different requirements.(Default
installation: supply water position).
4. Support level and vertical installation to satisfy users’
different requirements.
5. Support optical interface, RS485 interface and M-Bus interface
etc. multi-communication mode, easy for centralized data management
by user.
6. NOWA-testing in the parallel mode is applicable.
Technical Data
Profile
Application:Heating/cooling/heating-cooling metering
Approval:MID
Mount position:Vertical or horizontal
Calculator protection class:IP 65
Battery supply:3.6V lithium battery up to 8 years lifetime
Temperature sensor type:PT1000
Cable length of temperature sensor:1.5 meter (or customized)
Test possibilities:display, instruction (compatible with NOWA
software)
Calculator basic features
Environmental class:EN1434/MID E1+M1
Ambient operating temperature:A Class (5～55) ℃ or B Class(-25 ～ +55) ℃ optional
Ambient storage temperature:-20～ +70 ℃
Protection class:IP 65
Radio system:Wireless M-bus can be integrated by 868,434,169MHz
(OMS)
Standard interface:Optical interface
Interfaces optional:1 Slots for modules with M-Bus, RS485, Pulse
Output
Temperature range heating:4～95℃
Temperature range cooling:4～95℃
Extensive data memory:720 days flow data and heat data
RS485 communication:red is vcc(5~24VDC),white is B,green is A,black
is GND
Pulse output:red is output and black is GND
Display
Display indication:LCD, 8 digits
Units:MWh - kWh - GJ - Gcal - ℃ –K - m³ - m³/h
Total values:99,999,999 - 9,999,999.9 - 999,999.99 - 99,999.999
Values displayed:Energy /Power/Volume/ Flow Rate/Temperature and
more
Interfaces
Optical:Band rate 2400
M-Bus:Band rate 300-9600
RS485:Band rate 300-9600
Pulse output:One pulse output
Temperature input
Starting temperature difference ∆Θ K:0.25
Min. temperature difference ∆Θmin K:3 (2K can be customized)
Max. temperature difference ∆Θmax K:60 (105 can be customized)
Absolute Temperature measuring range Θ ℃:4 ～95 (4-130 can be customized)
Screw thread connection version
Flange Connection Version
Company profile
Lanry Instruments is the professional manufacturer of flow
measurement instruments, provides one package service of research
and development, production, marketing and after -sales services.
Engaged in the production of flow meters more than 20 years, Lanry
has been equipped with advanced design capabilities and piled up a
wealth of field application experience, which lays a solid
foundation for the commitment to the promotion and innovation of
high-tech system solution. The corporation has devoted to the
production of flow measurement instruments with superior
performance, high stability and strong reliability. Currently,
Lanry Instruments has developed into two branches as Lanry
Instruments(Shanghai) Co.,Ltd. and Lanry Instruments (Dalian) Co.,
Ltd, which are responsible for different areas and applications.
