The flow meter is a compact, handheld device that uses clamp-on transducers to measure fluid velocity in pipes without contacting the fluid. It can measure flow rates between 0.03-7m/s in pipes from 15mm to 6000mm diameter. The meter offers optional features like data logging, heat measurement, and display of flow, velocity, and temperature. It is suitable for applications like pump testing, leak detection, and energy monitoring in various industrial processes.

1. Product Data Sheet
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The flow meter is a handheld type with clamp-on
transducer which offers a variety of optional features. It is
designed to measure the fluid velocity of liquid within
closed conduit or pipe. The meter is compact and robust
which comprises additional functions that can turn it into
more than just a flow meter.
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
Handheld Type Ultrasonic Flow Meter
MHC-3000H
Application
--pump testing and inspection
--inline flow meter performance verification
--leakage and blockage detection
--flow surveys
--cooling and heating fluid measurements
--deluge and extinguisher system testing
--demineralised water measurement
--clean room applications
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)
--accuracy to ±1%
--light weight, no more than 600g (1.32lbs)
--easy installation and operation
--bi-directional flow measurement
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 meter can be ordered with an internal data logger,
which is available to store up to 100,000 measurements
with each measurement which can be selected by the user
before each measurement. The data can be transferred via
RS485.
The 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. Because the
transducers are non-contacting and have no moving parts,
the flow meter is not affected by system pressure, fouling
or wear. Please consult the factory of assistance.

2. Product Data Sheet
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MHC-3000H Specifications
Transmitter
Dimension 220*120*92mm (8.7"*4.7"*3.6")
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
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

3. Product Data Sheet
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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

4. Product Data Sheet
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Optional Heat Measurement Function
The 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