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MHC-3000 Series Ultrasonic Flow Meters

Difference between the meters

Model MHC-3000B MHC-3000G MHC-3000H MHC-3000P

Type wall mount integrated handheld portable

Principle transmit-time technology

Function permanent or continuous measurement survey, inspection or detection, intermittent

Portability w/o yes

Transducer

Installation

clamp-on, insertion,

flange or thread thread or flange clamp on

Transducer Scheme Single-path

Power Supply AC85~265V or

DC8~36V DC24V

rechargeable 1900mA Ni-MH built-in

battery

Output 4-20mA/RS485/OCT 4-20mA/RS485 w/o, or RS485 4-20mA/RS485/OCT

Heat measurement be realized with

PT100 resistor w/o be realized with PT100 resistor

SD Card w/o yes

Printer w/o yes

Application Sea water, general water, kerosene, gasoline, fuel oil, crude oil, propane, butane, diesel oil,

castor oil, peanut oil, alcohol, and other liquids

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1. MHC-3000B

The MHC-3000B 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.

Specifications as:

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

Display: 10x2 digits

Operation: 2*8 keypad

Ambient temperature: -25°C~75°C (-13°F~167°C)

Cable inlet: 1/2"NPT

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: IP65

Ex-proof: Exd II BT4

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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)

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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.

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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 24*25 32

800 1200 975 920 880 5 24*30 32

900 1300 1075 1020 980 5 24*30 34

1000 1400 1175 1120 1080 5 28*30 36

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2. MHC-3000G

The MHC-3000G integrated ultrasonic flow meter can be successfully applied on a wide range of metering applications.

Pipe size ranges from 15 to 1000mm (1/2" to 40") 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.

Specifications as:

Working power supply: DC24V / Battery

Accuracy: ±0.5%FS

Max. flow velocity: 7m/s (23ft/s)

Measuring period: 500ms

Display: 10x2 digits

Operation: 4 touch-key press

Ambient temperature: -25°C~75°C (-13°F~167°C)

Signal output: 1 way isolated RS485

1 way 4-20mA

Communication protocol: Modbus protocol,

FUJI extension protocol

Installation: Flange / thread

Protection: Sensor IP 68, mainframes IP 65

Cable inlet: 1/2”NPT

Transducers are same with former page Tube type in page 5.

For connected flanges, they are customized according to user’s requirement.

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3. MHC-3000H & MHC-3000P

Both two models are portable with clamp-on transducers. The meter utilizes two non-contacting and clamp-on type

transducers that function as both ultrasonic transmitters and receivers. The transducers are clamped on the outside of a

closed pipe at a specific distance from each other. The flow meter operates by alternately transmitting and receiving a

frequency modulated burst of sound energy between the two transducers and measuring the time interval that it takes for

sound to travel between the two transducers. The difference in the time interval measured is directly related to the

velocity of the liquid in the pipe.

The meter offers a heat quantity measurement function that turns the instrument into a portable 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.

Different with MHC-3000H, the MHC-3000P is equipped with a built-in thermal printer which can print out the

measuring results. (Note that this printing function is conflict with the SD card. That means when data is printed out, it

won’t be recorded in SD card.)

Specifications as:

Dimension: 220*120*92mm (8.7"*4.7"*3.6") (MHC-3000H)

220*125*92mm (8.7"*4.9"*3.6") (MHC-3000P)

Power requirements: built-in 24V Ni-MH battery (1900mAh) provides 15 hrs of continuous operation,

charging: 220V AC 56/60 Hz (adapter supported)

Velocity range: 0.03-7m/s (0.01~23ft/s)

Inputs/Outputs: RS485, Heat Flow (MHC-3000H)

4-20mA / OCT / RS485, Heat Flow (MHC-3000P)

Display: 2 line characters display instantaneous and accumulative flow, velocity and signal status

Units: liters, m³, US gallon, UK gallon, s, m, h, d, l/s, m³/h, etc.

Ambient conditions: -20 °C to +75 °C, 0 to 85% relative humidity (-4°F~167°C)

Accuracy: ±1-3%FS

Repeatability: ±0.2%

SD card: Supported, at least 2GB

Printer: Thermo sensitive (MHC-3000P only)

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Optional Transducers

Technical

parameters N-S1 N-M1 N-L1 N-S1H N-M1H N-L1H N-HS N-HM

Applicable pipe

(mm)

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")

15~100

(0.5"~4")

50～700

(2"~28")

Material Aluminum alloy PES (Polyether Sulfone)

Working

frequency 1 MHZ

Installation

method V (N、W) V、Z Z V (N、W) V、Z Z V (N、W) V、Z

Calibration Pairing & Calibrating for the complete machine

Magnetism Yes N/A Yes

Applicable

temperature -40～90 °C (-40°F~194°F) -40～160 °C (-40°F~320°F)

Protection IP68

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: 5mX2

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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

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4. Ordering Information

Honma reserves the right to alter specifications without notice.

Model Description

MHC-3000 transmit time ultrasonic flow meter

Code Heat measurement function

T with PT100 resistor

— no mark if unnecessary

Code Meter type

B wall mount type

S panel mount type

G integrated inline type

H handheld type

P portable type

Code Transducer usage

C for wall mount and panel type

N for handheld and portable type

Code Transducer type

S1 clamp on transducer for pipe 15-100mm

M1 clamp on transducer for pipe 50-700mm

L1 clamp on transducer for pipe 300-6000mm

P1 standard insertion transducer

P2 lengthened insertion transducer

xx inline sensor diameter, write the figure (mm)

Code (MHC-3000B & MHC-3000P only)

HS bracket transducer for pipe 15-100mm

HM bracket transducer for pipe 50-700mm

Code Transducer working temperature

H up to 160°C

— normal to 90°C

Code Outputs (MHC-3000B only)

485 RS485

—

Code Cable length

A 5 meters

xx customized, write the figure (meter)

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