The document describes a wall mount ultrasonic flow meter. It can measure water and other liquid flows across a wide range of pipe sizes and temperatures. It has options for hazardous area certification, integrated temperature sensors, and a heat measurement function to calculate energy or heat flow. It connects to automation systems and has configurable inputs, outputs, and communication protocols.

1. Product Data Sheet
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The wall mount ultrasonic flow meter is for permanent
flow applications. Its modularity offers comprehensive
configuration options to make the instrument suitable for
everything from simple water flow measurements to
energy flow monitoring, automated process control and
product recognition.
The transmitter electronics are housed in a
corrosion-resistant, wall mounted enclosure and can be
powered by AC or DC power supplies. By offering a
wide range of input, output and communication interfaces
such as RS 485, Modbus and relay. The flow meter can
easily be connected to process automation systems. In
addition to the standard version for safe area applications,
we also offers Ex certified ultrasonic transmitter and
sensor modifications for permanent installation in
hazardous areas.
Wall Mount Type Ultrasonic Flow Meter
MHC-3000B
Application
--agriculture and irrigation
--cooling and heating fluid measurements
--water and wastewater measurements
--monitoring and controlling of HVAC systems
--contactless product recognition
--automated process control
Highlights
--heat measurement function optional
--various units to display
--great pipe range from 15 to 6000mm (1/2"~236")
--temperature range from -40 to 160℃ (-40°F~320°F)
--self-diagnostic function
--AC or DC supply option
--Easy to install, clamp-on design
--Bi-directional flow measurement
The meter offers a heat quantity measurement function
that turns the instrument into an energy meter. When
equipped with this feature, the flow meter incorporates
measured flow and temperature values delivered by two
PT100 sensors into heat flow and heat quantity. This is
valuable information to assess the efficiency of heat
exchangers and HVAC systems.
The wall mount ultrasonic flow meter can be successfully
applied on a wide range of metering applications. Pipe
size ranges from 15 to 6000mm (1/2" to 236") and
transducers working temperature can be up to 160°C
(320°F). A variety of liquid application can be
accommodated: ultrapure liquids, potable water,
chemicals, reclaimed water, cooling water, river water,
plant effluent, alcohol, etc. For more specific
requirements, please consult the factory of assistance.

2. Product Data Sheet
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MHC-3000H Specifications
Dimension 185*135*85mm (7.5"*5.5"*3.5")
Working power supply AC85~265V, 50/60Hz, DC8~36V
Accuracy ±1~3%FS
Flow range 0.03~7m/s (0.01~23ft/s)
Measuring period 500ms (2 times per second, and 128 groups of data collected at each cycle )
Display 20 digits, 2 lines characters displayed on the same screen
Operation 2*8 keyboard
Ambient temperature -25°C~75°C (-13°F~167°C)
Signal output
1 way isolated RS485
1 way 4-20mA
1 way OCT
Signal input
3 way 4-20mA
2 way Pt100 resistor
Communication protocol Modbus protocol, FUJI extension protocol
Installation External application installation
Protection IP 65
Ex-proof Exd II BT 4
Cable inlet 1/2”NPT

3. Product Data Sheet
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Optional Transducers
Plug-in type
Specification Standard Plug-in type Lengthened Plug-in type
Application pipe diameter larger than DN80mm (3")
Material ball valve and probe: stainless steel 316L, ball valve base: carbon steel
Frequency 1MHz
Installation method Z method
Application temperature -40~160°C (-40°F~320°F)
Application pipe material
Carbon steel, stainless steel, cast iron, copper, PVC, aluminum, glass fiber, concrete,
etc.
Cut-out hole size Φ18
Pressure 1.6MPa (16bar) [ <0.6MPa (6bar) when installing]
Protection IP68
Installation space >550mm (22") >700mm (28")
Length 186mm (7.3") 330mm (13")
Medium single, uniform and stable liquid which can transmit ultrasonic
Medium turbidity <20000ppm
Cables EMI shield, up to 300m (984ft)

4. Product Data Sheet
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Clamp-on type
Technical parameters C-S1 C-M1 C-L1 C-S1H C-M1H C-L1H
Applicable pipe
diameter (DN)
15～100
(0.5"~4")
50～700
(2"~28")
300～6000
(12"~236")
15～100
(0.5"~4")
50～700
(2"~28")
300～6000
(12"~236")
Material Aluminum alloy PES (Polyether Sulfone)
Working frequency 1 MHZ
Installation method
V (N、W)
method
V、Z
method
Z method
V (N、W)
method
V、Z
method
Z method
Calibration Pairing & Calibrating for the complete machine
Magnetism Yes N/A
Applicable temperature -40～90 °C (-40°F~194°F) -40～160 °C (-40°F~320°F)
Protection grade IP68
Dimensions (mm) 45×30×30 60×45×45 80×70×55 90×85×24 90×82×29 90×85×29
Weight (gram) 75 250 400 94 300 500
Media type
Water, seawater, sewage, alcohol, various oils and other single, uniform and stable liquid
that can transmit ultrasonic wave
Medium turbidity <20000ppm with low bubble content
Applicable pipes
Uniform and compact pipes made of carbon steel, stainless steel, cast iron, copper, PVC,
aluminum, glass fiber reinforced plastics, and lining is permitted.
Pipe lining material
Epoxy asphalt, rubber, mortar, polypropylene, polystyrene, bakelite,
polytetrafluoroethylene, etc.
Signal cable Standard configuration: 5m*2 (16.4ft×2), lengthened as required.

5. Product Data Sheet
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Tube type unit: mm
Pipe size
(DN mm)
Length
(L)
Outer
diameter
of Flange
(D)
Distance
between bolt
hole center
(D1)
Diameter of
sealed surface
(D2)
Thickness of
sealed surface
(F)
Diameter of the
hole * quantity
(Ȼ)
Thickness
of flange
(C)
2.5MPa
15 320 95 65 46 2 14*4 14
20 360 105 75 56 2 14*4 16
25 390 115 85 65 3 14*4 16
32 450 140 100 76 3 18*4 18
40 500 150 110 84 3 18*4 18
1.6MPa
50 200 165 125 99 3 18*4 20
65 200 185 145 118 3 18*4 20
80 225 200 160 132 3 18*8 20
100 250 220 180 156 3 18*8 22
125 250 250 210 184 3 18*8 22
150 300 285 240 211 3 22*8 24
200 350 340 295 266 3 22*12 24
250 450 405 355 319 3 26*12 26
300 500 460 410 370 4 26*12 28
350 550 520 470 429 4 26*12 30
400 600 580 525 480 4 26*16 32
450 700 640 585 548 4 30*20 34
1.0MPa
500 800 670 620 585 4 25*20 32
600 1000 780 725 685 5 30*20 36
0.6MPa
700 1100 860 810 775 5 25*24 32
800 1200 975 920 880 5 30*24 32
900 1300 1075 1020 980 5 30*24 34
1000 1400 1175 1120 1080 5 30*28 36

6. Product Data Sheet
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Optional Heat Measurement Function
The wall mount ultrasonic flow meter with optional heat flow module installed is designed to measure the rate and
quantity of heat delivered to a given building, area or heat exchanger. The meter measures the volumetric flow rate of the
heat exchanger liquid (water, water/glycol mixture, brine, etc.), the high temperature at the inlet pipe and the low
temperature at the outlet pipe. Heat delivery is calculated by the following equation.
Rate of heat delivery = Q*(Tin – Tout)*c
Where
Q = volumetric flow rate
Tin = high temperature at the inlet
Tout = low temperature at the outlet
C = specific heat of the liquid
Honma reserves the right to alter specifications without notice.
Dalian Honma Instrument Technology Co., Ltd
Headquarter:
No.111, Beihai Industrial Park, Ganjingzi District, Dalian, Liaoning, 116085, China
Tel: 0086-411-8711 2351
Fax: 0086-411-8420 4069
Website: www.dlhmyb.com
Shanghai Sales Office:
825# Ting'an Rd, Pudong Disctrict, Shanghai, 200137, China