Max G240HZ, G045, G105HZ, G105, G004HZ User Manual
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G-Series
Positive Displacement - Gear Flow Meters
Manual
G004, G015, G045, G105, G240
G004HZ, G015HZ, G045HZ, G105HZ, G240HZ
Model G015
Model G240
Model G004
Model G045
Model G105
Table of Contents
Before You Install .................................................................................. page 3
Meter General Description .................................................................. page 4
Transmitter General Description ....................................................... page 5
Meter Specications ............................................................................page 5
Transmitter Specications ..................................................................page 5
Transmitter Specications Temp ...................................................... page 6
Available Designs .................................................................................. page 6
Installation .............................................................................................. page 7
Do’s & Don’ts .......................................................................................... page 8
Piping Diagram ...................................................................................... page 8
Electrical Installation - Wiring .......................................................page 9-10
Pressure Drop Charts ..........................................................................page 11
Optional Heater Block Details ...........................................................page 13
Contact for Repairs & Calibration Services ...................................page 13
Part number matrix .............................................................................page 14
Limited Warranty .................................................................................page 16
Custom Instructions for Hazardous Locations/Explosion Proof Housing:
http://www.maxmachinery.com/content/explosion-proof-installation-instructions
DO NOT ATTEMPT TO INSTALL OR START FLOW METER WITHOUT READING ENTIRE MANUAL
Max Machinery, Inc. (MMI) reserves the right to make changes to the product in this Instruction Manual to improve performance, reliability, or
manufacturability. Consequently, contact MMI for the latest available specications and performance data. Although every effort has been made to
ensure accuracy of the information contained in this Instruction Manual, MMI assumes no responsibility for inadvertent errors.
Max Machinery, Inc. G-Series User Manual © Copyright 2018 Rev2018A 2
Before You Install
Thank you for choosing to install a Max Machinery precision ow meter. To ensure the best experience please take a
moment to read through this manual prior to installation.
When you purchased this meter a ow engineer helped determine the best meter for you based on many of the factors
that will be reviewed on the following pages. If you have any questions about installation or operation please don't
hesitate to call Max Machinery, Inc. at 707-433-2662
When you are ready to install there will be a few tools you will need:
Meter Installation:
The meter and transmitter
A signal cable (available from factory)
The display or signal processing device
Indicator Manual
Calibration Certicate
Bypass plumbing supplies
Many Max meters are installed and operate for decades, so having the following information in your records may prove
useful. We have provided this outline as a starting point.
Process Temperatures ___________________________ Fluid Viscosity ____________________________________
Operating Range ________________________________ Line Pressure ____________________________________
Max Sales # or PO # _____________________________ Installation Date __________________________________
Meter Model # __________________________________ Meter Serial # ____________________________________
Notes: _____________________________________________________________________________________________
_____________________________________________________________________________________________
_____________________________________________________________________________________________
_____________________________________________________________________________________________
Max Machinery, Inc. G-Series User Manual © Copyright 2018 Rev2018A 3
Meter General Description
While gear meters are traditionally based on a design similar to a conventional hydraulic pump, the G Series of ow
meters has been engineered to increase signal resolution, prevent internal cavitation and greatly reduce the pressure
drop required to move uid through the gears.
Max ow meters and transmitters are calibrated at the factory as a matched set. This ensures the highest accuracy and
allows for quick setup in the eld. For eld installations where the transmitter has not been setup with a meter at the
factory, an optional serial interface kit is available to provide full access to all conguration options and parameters.
Solid state sensors are used to detect the position of a driven magnet inside the Max Flow Meter. Changes in position
are tracked by a microprocessor, which generates an output frequency proportional to the ow rate. Advanced signal
processing provides both ne angular resolution (0.36 degrees rotation per pulse) and rapid response (output updated
every 1 ms). The G-Series transmitter uses modern sensor technology coupled with advanced signal processing to deliver
new levels of performance and reliability.
Flow Meter Features
• Capable of operating at high pressures (425 bar/6000 psi).
• Compatible with a wide range of uid types and viscosities.
• Can operate at high temperatures with a suitable high
temperature transmitter.
• Available in 303 and 316 stainless steel.
Transmitter Features
• High resolution measurement –Analog Output: Congured output
ranges to any value within ± 10 Vdc or ± 20 mA.
• Frequency Output: Congured output resolution of 1 to 1000
pulses per revolution.
• Linearization of up to 16 points to fully describe the ow meter’s
output curve and achieve the highest system linearity over the
meter’s entire operating range.
Transmitter General Description
Max transmitters are designed to work with the entire family of Max Flow Meters to provide extremely precise ow
measurement in a cost effective package. Different options of industrial housings or IP66 rated explosion proof
enclosures, combined with a choice of one-part and two-part, high temperature designs with remote electronics cover a
wide range of application environments – from the laboratory to harsh industrial processes.
Compensation Algorithm – Compensates for variations in Hall sensor and ow meter characteristics to provide a stable,
undamped output that accurately represents the instantaneous ow rate. This feature is factory set when the meter
and transmitter are mated together. If the transmitter is changed, the compensation can be performed via a button on
the circuit board.
Anti-Dither Buffer - Masks the false output that may occur at very low ow rates in the presence of vibration or hydraulic
noise. If the meter reverses direction the output signal will be interrupted for a user selected portion of a meter rotation.
Reverse ow exceeding the buffer setting will result in an output proportional to reverse ow rate. The buffer quantity
can be set from 1% to 100% of a revolution.
Max Machinery, Inc. G-Series User Manual © Copyright 2018 Rev2018A 4
Meter Specications
Model G004 G015 G045 G105 G240
1
Maximum ow rate
Liters/min: 4 15 45 105 240
Gal/min: 1 4 11.9 28 64
Maximum pressure (psi)
|-----------------------414 bar (6000 psi)-----------------------| see below
2
Maximum temperature --------------------- 2 part: 225°C (435°F) --------------------
3
Recommended ltration 10 micron 15 micron 20 micron 20 micron 30 micron
Displacement (cc/rev) 1.8 4.2 13.5 38 133
Weight (kg) 1.2 1.8 3.7 7.7 21
Typical k-factor (pulses/cc) 500 200 70 25 7
NPT Port size 1/8” 3/8” 1/2” 3/4” 1” to 280 bar (4000 psi)
SAE Port Size #4 #6 #8 #10 #16 to 425 bar (6000psi)
1
For viscosities of 100 cps or more, derate per pressure drop curves for higher viscosities.
2
Standard transmitter capable to 90°C (195°F)
3
Some materials may have different lter requirements, consult factory.
Transmitter Specications
Supply Voltage & Current 5-26 Vdc @ 30 mA typical
Frequency output 12Vdc @ 90 mA typical
Analog output 24Vdc @ 45 mA typical
Analog Resolution Adjustable without recalibration to any range of
+/- 20mA - Models ending in “A1” and “B1”
+/- 10 Vdc - Models ending in “C1” and “D1”)
Frequency Model Specications
Output (5.0 Volt Supply) No Load 0.00 / 4.80 Volts
2.5K Load to Common 0.00 / 4.60 Volts
2.5K Load to +5 Volts 0.25 / 4.80 Volts
Short Circuit Current (1) 45 mA
Output Impedance 100 Ω
Rise/Fall Time 0.2 μ Sec
Output Update Rate(2) 1 ms
Min/Max Frequency 0-60 kHz
Resolution 1 - 1000 pulses/rev
Ambient Temperature Range Transmitter (Storage) –40ºC to 85ºC (–40ºF to 185ºF)
Transmitter (Operation) (3) –40ºC to 80ºC (–40ºF to 175ºF)
Maximum Temp, Process Fluid (Standard Model) 90ºC (195°F)
(20ºC Ambient, 5V supply) (High Temp Model) 155ºC (310°F)
(Ultra High Temp Model) 225ºC (435°F)
Anti-dither Range Default 50% Revolution of Meter for unidirectional (software selectable
from 1 - 100% of 1 revolution). 2% for bi-directional meters
Signal Filtering Software selectable from 1ms to 250ms time constant
(1) Continuous Short Circuit is not recommended. The output current should not exceed 10 mA
(2) Events are seen as output transitions 1 ms after they occur
(3) Temperature of metered uid will affect transmitter temperature, see graph
Max Machinery, Inc. G-Series User Manual © Copyright 2018 Rev2018A 5
Transmitter Temperature graph
Model 29X Transmitter Series
120
110
100
80
60
40
20
Standard
Ambient Temperature °C
0
-25
50
Available Designs
High
temperature
2 part pickup
100
Process Temperature °C
Ultra High
temperature
2 part pickup
150 200
225
250
300
G004 Standard G004 2-Part Pickup G004 Ex-Proof
Max Machinery, Inc. G-Series User Manual © Copyright 2018 Rev2018A 6
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