Halma MC Series Manuel utilisateur

The Fastest Flow Controller Company in the World!

OPERATING MANUAL

MC · MCW · MCR · MCV

2 Introduction

Thank you for purchasing an Alicat ﬂow controller.

If you have any questions about operating it, or if

something is not working as expected, please let us know.

We are eager to help you in any way possible.

Alicat Scientiﬁc, Inc.

info@alicat.com • alicat.com

7641 N Business Park Drive, Tucson, AZ 85743 USA

1-888-290-6060

Serial Number:

Next Calibration (Month/Day) :

Recalibrate your ﬂow controller every year.

Alicat recommends that you have your ﬂow meter calibrated every year

in order to ensure the continued certainty of your readings and extend

the Limited Lifetime Warranty. When it’s time for your ﬂow meter’s annual

recalibration, contact us by phone, email or live chat to set it up, or ﬁll out

the Service Request Form at alicat.com/service.

This Alicat device comes with a NIST traceable

calibration certiﬁcate.

This Alicat ﬂow controller conforms to the European

Union’s Restriction of Use of Hazardous Substances

in Electrical and Electronic Equipment (RoHS)

Directive 2011/65/EU.

This Alicat ﬂow controller complies with the

requirements of the Low Voltage Directive 2014/35/

EU and the EMC Directive 2014/30/EU and carries

the CE Marking accordingly.

This Alicat ﬂow controller complies with the

requirements of the European Union’s Waste

Electrical & Electronic Equipment (WEEE) Directive

2002/96/EC.

DOC-MANUAL-MC Rev.  • 2020.02.05

2020.02.05  REV. 0 3

Introduction

You’re busy, and the last thing you want to do is waste time wrestling with

your ﬂow controller. We’re here to make your life a little easier so you can

do what you do best. It’s our pleasure to introduce you to your new Alicat:

• High-accuracy performance for all your gases. Use

your ﬂow controller with any of the 98 or more gases

that are part of Gas Select™, page 34.

• Control pressure while monitoring ﬂow rate. Set the closed

loop control algorithm for pressure control, page 23.

• Backlit display with adjustable contrast is easy to

read in direct sunlight. In dimly lit areas, press the

Alicat logo to turn on the backlight, page 7.

• Change your STP to match any standard temperature

and pressure reference, page 38.

• Log data to your PC. Talk to the ﬂow controller serially to

capture all ﬂow data for logging and analysis, page 42.

This manual covers the following Alicat Scientiﬁc instruments:

• MC, MCP, and MCR-Series Mass Gas Flow Controllers

• MCD and MCRD-Series Dual Valve Mass Gas Flow Controllers

• MCE and MCES-Series Mass Gas Flow Controllers

• MCQ and MCRQ-Series High Pressure Mass Gas Flow Controllers

• MCS and MCRS-Series Anti-Corrosive Mass Gas Flow Controllers

• MCV and MCVS-Series Vacuum Mass Gas Flow Controllers

• MCW and MCRW (WHISPER)

Low Pressure Drop Mass Flow Controllers

This includes Alicat ﬂow controllers labeled as approved for CSA Class 1

Div 2 and ATEX Class 1 Zone 2 hazardous environments. See page 60

for Special Conditions regarding the use of CSA/ATEX labeled devices.

Please contact Alicat at 1-888-290-6060 or info@alicat.com if you have

any questions regarding the use or operation of this device.

4 Introduction

Contents

Quick Start Guide 

Getting Started 

Getting to Know Your Alicat 

Connectors and Buttons 

The Flow Controller Display 

Status Messages 

Mounting 

Filters 

Device Ports 

Connecting Plumbing to Your Gas Flow Controller 

MCV Controller Operating Notes 

MCD Dual Valve Controller Operating Notes 

Power and Signal Connections 

Standard 8-Pin Mini-DIN Pinout 

Analog Signals 

Option: Color TFT Display 

Navigation and Customization 

Flow Controller Menu Map 

Displaying Live Flow Data 

Choosing Engineering Units 

Option: Totalized Flow Data and Batch Dispensing 

Dispensing Gas in Batches 

Menu 

Taring Your Flow Controller 

Control Menus 

Changing the Setpoint 

Changing Between Setpoint Sources 

Changing the Control Loop Variable 

Establishing Setpoint Limits 

Using Setpoint Ramping 

Limiting Flow Rate While Controlling Pressure 

Adjusting the Closed Loop Controller 

Using a Control Deadband for MCDs 

2020.02.05  REV. 0 5

About 

Diagnostic Information 

Basic Conﬁguration Menu 

Choosing Engineering Units from the Basic Conﬁguration 

Serial Communication 

Establishing Communications 

Serial Terminal Application 

Polling Mode 

Streaming Mode 

Taring 

Collecting Flow Data 

Commanding a New Setpoint 

Sending Setpoints as Floating Point Numbers 

Sending Setpoints as Integers 

Using Gas Select™ and COMPOSER™ 

Quick Command Guide 

Troubleshooting 

Maintenance 

Gas List 

Engineering Units 

Flow Units 

Pressure Units 

Optional Pinouts 

Locking Industrial Connector Pinouts 

M12 Connector Pinouts 

9 pin D-Sub Common Pinouts 

15 pin D-Sub Common Pinouts 

6 Quick Start

Quick Start Guide

Setup

•

Connect your ﬂow controller. Ensure that ﬂow through your device will be

in the same direction as the arrow on the ﬂow body (usually left to right).

•

Tare your flow controller. Before you connect the ﬂow meter, ensure

that no air is ﬂowing through the device and give it a zero setpoint for

at least 2 seconds. Note: Whisper ﬂow controllers are sensitive enough

to measure the lightest of breezes, so ensure that one end is plugged

before selecting tare.

• Choose your engineering units. Press the button above or below any

parameter to enlarge it in the middle of the display. If you select that

same item a second time, you can change the engineering unit for that

parameter. You can choose units for all of the parameters at once by

selecting MENU →BASIC CONFIG →DEVICE UNITS (see page 18).

Operation: Flow Veriﬁcation

•

Monitor live flow readings. You can monitor live readings of ﬂow,

pressure, and temperature by viewing the screen. Readings are updated

in real time. See page 17.

•

Tare your flow controller before you begin another round of

measurements. Ensure that no ﬂow is passing through your controller

and wait for it to auto-tare. See page 22.

• (Optional) Capture a totalized reading. The totalizer option displays

the total ﬂow that has passed through the device since the last time

the totalizer was reset. Press TOTAL/MENU to access the totalizer. See

page 19.

Backlight

Your Alicat monochrome display comes equipped with a backlight. To

activate the backlight, press the center of the Alicat logo on the front

of your device. To turn the backlight o press the button again. For color

displays, pressing this button will turn o the display to conserve power.

Maintenance and Care

• If your gas is clean, your ﬂow meter will require no periodic cleaning.

Read more about maintenance on page 51.

•

Calibrate your ﬂow meter annually. Request an Alicat factory calibration

at alicat.com/service or by calling 1-888-290-6060.

2020.02.05  REV. 0 7

Getting Started

Getting to Know Your Alicat

Connectors and Buttons

The drawings below represent the default conﬁguration of a standard

Alicat mass ﬂow controller (MC series) with an upstream valve. Your flow

controller’s appearance and connections may differ, especially if it

has been ordered with a large Rolamite valve or a downstream valve.

+0.0 +0.0

+13.49 +22.73

Mass Flow

CCM SCCM MENU

PSIA ¤C SETPT

0.0

SCCM

A ir

Process

Connection Mounting

Holes

Light

Switch

Softkey

Controls

LCD

Display

I/O PORT

8 Getting Started

The Flow Controller Display

The ﬁgure below identiﬁes the various features of the ﬂow controller

display. Press the large button with the Alicat logo to toggle the backlight

on and o. For more details, see the Menu Map on page 16 and the

menu-by-menu descriptions that follow it.

Engineering units are used by the controller in its serial communications

and calculations. These can be dierent from button units, which are the

units being displayed. These are individually conﬁgurable. See page 18.

Highlights pressure in the center

of the meter. Push a second

time to choose the pressure

parameter (if available), or to select

pressure engineering units.

Highlights temperature.

Push a second time to select

temperature engineering units.

SETPT sets the ﬂow or pressure

control setpoint (see page 24).

Highlights volumetric (actual)

ﬂow rate. Push a second

time to select volumetric ﬂow

rate engineering units.

Highlights mass ﬂow rate. Push a second time to select mass

ﬂow (normal mass ﬂow) or true mass ﬂow engineering units.

TOTAL Accesses ﬂow totalizer (optional) (page 19).

MENU enters the Menu system (page 22)

Status Messages

ADC Analog-digital

converter error

EXH Valve exhaust is active

HLD Valve hold is active

LCK Front display is locked

(in the example above)

MOV Mass ﬂow over

range of device

OPL Overpressure limit

exceeded (optional)

OVR Totalizer rolled over to zero

POV Pressure over

range of device

TMF Totalizer missed out

of range ﬂow

TOV Temperature over

range of device

VOV Volumetric ﬂow over

range of device

+0.0 +0.0

+13.49 +22.73

Mass Flow

LPM SLPM MENU

PSIA ¤C SETPT

+0.0

SLPM

A ir

LCK

1 2 3

4 5 6

2020.02.05  REV. 0 9

Mounting

No straight runs of pipe are required upstream or downstream of the ﬂow

controller. Most Alicat ﬂow controllers can be mounted in any position,

including upside-down. MCS and MCRS series flow controllers use

media-isolated sensors that must be tared after changing orientation.

Caution: Flow controllers that use large Rolamite valves

(MCR, MCRW, MCRQ, MCRS) should be mounted with

their valve oriented vertically (right-side up). If another

orientation is desired, please contact Alicat.

Filters

When pressure drop is not an issue, use in-line sintered ﬁlters to prevent

large particulates from entering the ﬂow controller. Suggested maximum

particulate sizes are as follows:

• 5 microns for units with ﬂow ranges of 1  or less.

• 20 microns for units with ﬂow ranges between 2  and 1 .

• 50 microns for units with ﬂow ranges of 1  or more.

Device Ports

Your controller has been shipped with plastic plugs ﬁtted into its ports.

To lessen the chance of contaminating the ﬂow stream, do not remove

these plugs until you are ready to install the device.

Standard Alicat Gas Flow controllers have female inlet and outlet ports.

Welded VCR and other specialty ﬁttings may have male connections.

• If you are using a ﬁtting that does not have a face seal, use

thread-sealing Teﬂon tape to prevent leakage around the

port threads, but do not wrap the ﬁrst two threads. This

will minimize the possibility of getting tape into the ﬂow

stream and clogging the laminar ﬂow elements (LFEs).

• If you are using a ﬁtting that has a face seal, there is

no need to apply Teﬂon tape to the threads.

! Warning: It is not recommended to use pipe dopes

or sealants on the process connections as these

compounds can cause permanent damage to the

controller should they get into the ﬂow stream.

10 Getting Started

Connecting Plumbing to

Your Gas Flow Controller

Your Alicat ﬂow controller can measure and control ﬂow generated by

positive pressure and/or suction. Connect the controller so that the ﬂow

travels in the same direction as the ﬂow arrow, usually from left to right

as you look at the front of the device.

Note: On instruments set up for vacuum or gas mixing, the control valve

will be situated in the down-stream position.

Control Valve

(upstream valve shown)

Inlet

Connection Outlet

Connection

Flow Direction Indicator

! Warning: Using the ﬂow controller above the maximum speciﬁed

internal line pressure, or above the maximum recommended

dierential pressure between the inlet and outlet, will result

in permanent damage to the internal pressure sensors.

A common cause of this problem is the instantaneous

application of high-pressure gas, as from a snap-acting

solenoid valve either upstream or downstream of the ﬂow

controller. If you suspect that your pressure sensor is damaged,

please discontinue use of the device and contact Alicat.

See the chart below for pressure limits.

Model

Max Common

Mode Pressure

Max Differential

Pressure

MC, MCR, MCS,

MCE, MCP, MCV

175  75 

MCW, MCRW 80  15 

MCQ, MCRQ 400  75 

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