Halma ALICAT SCIENTIFIC M Series User manual

OPERATING MANUAL
FOR STANDARD FLOW AND PRESSURE
DEVICES
Models M · MC · P · PC · L · LC

Introduction January 2023 • Rev. 0 • Standard Devices User Manual 2
Thank you for purchasing your Alicat device.
If you have any questions, or if something is not working as
expected, please contact us. We are eager to help you in any
way possible.
Contact Information
World Headquarters,
Tucson, Arizona, USA
[e-mail]
alicat.com
7641 N Business Park Dr.,
Tucson, AZ 85743 USA
+ 888-290-6060
Europe
[e-mail]
Geograaf 24
6921 EW Duiven
The Netherlands
+3 (0)26 203.65
China & SE Asia
[e-mail]
alicat.com.cn
2nd Floor, Block 63, No. 421,
Hong Cao Rd,
Shanghai 200233
PRC
+86-2-60407398 ext. 80
India
[e-mail]
Alicat Scientific India Pvt. Ltd.
101, Hamilton A Bldg,
Near Hiranandani Hospital,
Hiranandani Estate, Patli Pada,
Ghodbunder Road,
Thane West-400607
Maharashtra, India
GST No.: 27AAWCA5866D1Z6
+9 022-424800
Recalibrate your device every year.
Annual calibration is necessary to ensure the continued accuracy
of readings, and to extend the Limited Lifetime Warranty. Fill out
the Service Request Form at alicat.com/service, or contact us
directly when it is time to send in your device for recalibration.
For devices ordered with CSA, ATEX, ISO 17025, or other
certifications, please visit alicat.com/certifications. For
information about our limited lifetime warranty, visit
alicat.com/warranty.
Serial #:
Next Calibration:
This device comes with a NIST-
traceable calibration certificate.
This device conforms to the European
Union’s Restriction of Use of Hazardous
Substances in Electrical and Electronic
Equipment (RoHS) Directive 2011/65/EU.
This device 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 device complies with the requirements
of the Electrical Equipment (Safety)
Regulations 2016 and the Electromagnetic
Compatibility Regulations 2016 and
carries the UKCA marking accordingly.
This device complies with the
requirements of the European Union’s
Waste Electrical & Electronic Equipment
(WEEE) Directive 2002/96/EC
DOC-MANUAL-MPL, Rev. 0, January 2023
MC10SLPM
PCPSIG
LB1LPM
MCES2SLPM

Table of Contents January 2023 • Rev. 0 • Standard Devices User Manual 3
Contents
Introduction 5
Quick Start Guide 6
Installation and Startup 7
Safety Warnings 7
Installation 7
Filters 8
Power and Signal Connections 8
Analog Signals 9
Option: Charging a Portable Meter or Gauge 9
Bleed Ports Liquid Devices 10
Basic Operations 11
Viewing Live Data 11
Interacting with the Device 11
Taring the Device 12
How to Tare 12
When to Tare 12
Changing the Setpoint Controllers 12
Selecting Gas Mass Flow Devices 13
Data Screens 14
Live Screen 14
Min/Max Screen 14
Totalizer Screens Flow Devices 14
Option: Color TFT Display 15
Device Information 16
Basic Device Information 16
Device Full Scale Ranges 16
Manufacturer Information 16
Process Control Controllers 17
Setpoint 17
Setpoint Options 17
Auto-tare and Zero Setpoint Options 17
Setpoint Source 17
Idle Connection Response 18
Setpoint on Power-Up 18
Setpoint Limits 18
Setpoint Ramping 18
Ramp Rate 18
Ramping Options 19
Batch Dispensing Flow Controllers 19
Start a Batch 19
Repeat a Batch 20
Pause or Cancel a Batch 20
Valve Drive Percentage Display 20
Control Loop 20
Controlled Variable 20
PD/PDF or PDI Control Algorithms 21
Flow Limit while Controlling Pressure Flow Controllers 21
Control Deadband for Pressure Control 22
Device Setup 23
Gas Selection Mass Flow Devices 23
Gas Select™ 23
COMPOSER™ Gas Mixes 23
Creating New Mixes in COMPOSER™ 24
Viewing, Deleting, and Creating Similar Mixes 24
Sensor Setup 24
Engineering Units 24
STP/NTP Reference Values Mass Flow Devices 25
Flow and Pressure Averaging 25
Zero Band 25
Totalizer Options Flow Devices 25
Totalizer Mode 25
Totalizer Limit and Format 25
Totalizer Display 26
Totalizer Digital Data 26
Restore Totalizer Value on Power-up 26
Totalizer while Controlling Pressure 26
Batches Mass Flow and Liquid Controllers 26
Serial Communications Configurations 27
Unit ID 27
Modbus RTU Configuration 27
Manage Setpoint when Connection is Idle 27
Baud Rate 27
Display Setup 27
Data Screens 27
Screen Lighting 28
Display Rotation 28
Advanced Setup 28
Serial ASCII Communication 29
Establishing Communication 29
Communication Modes 29
Polling Mode 29
Streaming Mode 30
Taring Commands 30
Data Collection 30
Setpoint Controllers 31
Gas Select™ and COMPOSER™ Mass Flow Devices 31
Quick Command Reference 32
General Commands for All Devices 32
Controller Commands 32
Mass Flow Gas Select™ and COMPOSER™ Commands 32

Table of Contents January 2023 • Rev. 0 • Standard Devices User Manual 4
Modbus RTU Communication 33
Establishing Communication 33
Multidrop Information 33
Modbus RTU Serial Protocol 33
Process Data 33
Writing Control and Configuration Information 34
Status Flags 34
Modbus Reading and Status Registers 34
Special Commands 34
Custom Gas Mixtures 34
Special Commands and Arguments 35
Special Command Result Status Codes 35
Troubleshooting 36
Mass Flow Devices 37
Maintenance 38
Cleaning 38
Repair 38
Recalibration 38
Appendix A: Pinouts 39
8-Pin Mini-DIN (Default) 39
Locking Industrial Connector Pinout 39
9-Pin D-Sub Connector Common Pinouts 40
15-Pin D-Sub Connector Common Pinouts 40
M12 Connector Common Pinouts 41
Appendix B: Reference Information 42
Engineering Units 42
Gas List by Number 43
Gas List by Category 44
Appendix C: Application Setup 45
MCV Controller Operating Notes 45
Pressure Controller Applications 45
Forward (Downstream) Pressure Control 45
Back Pressure Control 46
Dual Valve Pressure Control 46
Dierential Pressure Control 46
Remote-Sensing Controller 47
Integrated Vacuum Controllers (IVC) 47

Introduction January 2023 • Rev. 0 • Standard Devices User Manual 5
Introduction
Depending on the model, Alicat devices have a variety
of features:
• 1000 readings per second
guarantees high resolution data.
• High-accuracy performance for all your flow.
Use the mass flow devices with any of the 98+
gases included with Gas Select™ (page 23).
• Control pressure while monitoring
flow rate. Set the closed loop control
algorithm to pressure control on your mass
flow or liquid controller (page 20).
• Control either gas or liquid with
your pressure controller.
• Monitor live pressure and temperature in
mass flow or liquid processes (page 11).
• Backlit display with adjustable contrast
is easy to read even in direct sunlight.
In dimly lit areas, press the logo to turn
on the backlight (page 11).
• Change your STP to match any standard
temperature and pressure reference
for your mass flow (page 25).
• Log data to your PC with a serial data
connection to control the device and capture
data for logging and analysis (page 29).
This manual covers the following devices among
others:
• Standard: M, MC, P, PC, L, LC
• Low pressure (Whisper™):
MW, MWB, MCW
• High pressure: MQ,
MBQ, MCQ
• Anti-corrosive: MS,
MBS, MCS, PS, PBS,
PCS, LS, LBS, LCS
• Portable battery-
powered: MB, MBS, MWB,
MBQ, PB, PBS, LB, LBS
• Dual valve: MCD, PCD
• Other variants: MCE,
MCV, PCP, PC3, IVC
Alicat oers countless combinations of device sizes,
accessories, connections, and configurations. These
custom solutions are offered to meet a variety of
application challenges brought forth by users pushing
the boundaries of our standard oerings.
If you have an idea for a new process or a challenging
application, contact Alicat for specialized engineering
and application support (page 2).
MCRH5000SLPM
PCRDPSIG
M100SLPM

Quick Start Guide January 2023 • Rev. 0 • Standard Devices User Manual 6
Quick Start Guide
Setup
• Connect your device. Ensure that
flow passes through your device in
the same direction as the arrow on
the flow body (usually left to right).
Application setup examples can be
found in Appendix C (page 45).
• Choose your engineering units. You
can choose the measurement units
by selecting MAIN MENU →SETUP
→Sensor →Engineering Units.
See page 24 for more details.
Operation: Flow Verification
• Monitor live flow, temperature,
and pressure readings. Readings
are updated and displayed on your
device in real time. See page 11.
• Capture totalized readings. The
totalizer option displays the total flow
that has passed through the device since
the last time the totalizer was reset.
To enable the totalizers, press MENU
→SETUP →Sensor →Totalizer 1
or Totalizer 2. See page 25.
Connectors and Buttons
The drawing to the right represents a typical
configuration of a standard controller. Your
device's appearance and connections may
differ.
Backlight
The monochrome display comes equipped
with a backlight. To toggle the backlight
power, press the logo on the front of your
device.
For optional color TFT displays, pressing this
button turns o the display to conserve power.
See page 15.
Maintenance and Care
• Gas devices do not require cleaning
when flowing clean, dry gases. Liquid
devices require minimal cleaning when
flowing clean liquids (page 38).
• Calibrate your device annually.
To schedule a calibration, please
contact support (page 2).
+0.0 +0.0
+13.49 +22.73
Mass Flow
CCM SCCM MENU
PSIA ¤C SETPT
+0.0
SCCM
A ir
Process
Connections Mounting
Holes
Light
Switch
Softkey
Buttons
LCD
Display
I/O PORT
DC
IN
This MC-1SLPM-D model mass
flow controller is a typical unit.
The flow body and the valve
sizes can vary significantly.

Installation January 2023 • Rev. 0 • Standard Devices User Manual 7
Installation and Startup
Safety Warnings
• For assistance in performing any disassembly
of the device, please contact Alicat
support (page 2) for assistance.
• Operating this device under conditions which exceed
the specifications noted in the manual or specification
sheet could lead to equipment damage or injury.
Installation
The device does not require straight runs of pipes either
upstream or downstream of the device. It can operate in any
orientation whether it's on its side, laid on its back, or inverted
and operating upside down. The only exception to this are
controllers with Rolamite valves. Rolamite valves need to be
oriented vertically, but it can be configured so that the flow
body is connected in a dierent direction.
Be sure to reference your device dimensions to determine
the size and positions of the mounting holes on the bottom
of the device.
. Mount the device so that flow passes through the flow
body as indicated by the arrow or left to right if an arrow
is not present. Refer to the device specifications at
alicat.com/specs for dimensions and mounting options.
2. Remove any plastic plugs from the inlet, outlet, or process
connections.
3. Plumb appropriate lines to the inlet and outlet connections
(and process connection, if present). For pressure
controllers, refer to Appendix C (page 45) for diagrams
on plumbing specific controllers.
Face seal fittings do not need Teflon tape applied to the
threads.
⚠ Do not use pipe dopes or sealants on the
process connections. These compounds
can cause permanent damage to the device
should they get into the flow stream.
If you are using a fitting that does not have a face seal, use
thread-sealing Teflon tape to prevent leakage around the
connections.
⚠ Do not wrap the first two threads entering the device.
This minimizes the possibility of getting tape into the
flow stream and clogging or damaging the device.
4. Connect cables to the power and signal connectors (may
not be applicable to battery devices).
5. Enable power to the device. The device automatically turns
on once the device is connected to power.
⚠ Do not enable power to the device until all necessary
pins have been confirmed to be properly connected.
The device is now ready for use. For further instruction
and operation of your device, please read further.
Control Valve
(upstream valve shown)
Inlet
Connection Outlet
Connection
Flow Direction Indicator
Inlet
Connection
Outlet
Connection
Flow Direction Indicator
+0.0000
MENU
PSIG SETPT
+0.0000
Gauge Press
PSIG
+0.0000
TARE
PRESS
I/O Port
DC
In
Light
Switch
Softkey
Buttons
Inlet
Valve
Outlet
Valve
Display
Flow
Body
Process Port
(bidirectional flow)
Supply &
Exhaust Ports
Optional Remote
Sensor Port
is located in the back
Mounting
Holes

Installation January 2023 • Rev. 0 • Standard Devices User Manual 8
Filters
When pressure drop is not a concern, use in-line sintered
filters to prevent large particulates from entering the flow
body of the controller. Suggested maximum particulate sizes
are as follows
Mass Flow:
• 5 microns for devices with flow ranges ≤1 .
• 20 microns for devices with flow ranges
between 1  and 1 .
• 50 microns for devices with flow ranges ≥1 .
Liquid:
• 20 microns for devices with flow ranges ≤100 CCM.
• 40 microns for devices with flow ranges >100 CCM.
Pressure:
• Maximum 40 microns for all gauges.
• 20 microns for PC, PCD, PCP, PCPD,
PCH, PCHD, PC3, PCD3
40 microns for PCR, PCRD, PCR3, PCRD3
Power and Signal Connections
Power can be supplied to your device through either the
power jack or the multi-pin connector on top of your device.
For more pinout configurations, see page 39.
✓ Note: Power requirements vary based on
analog configuration and valve type. Please
reference the associated specification sheet at
alicat.com/specs for power requirements.
⚠ Warning: Do not connect power to pins 1
through 6, as permanent damage can occur. It
is common to mistake pin 2 (labeled 5.12 Vdc
Output) as the standard 0–5 Vdc analog output
signal. Pin 2 is normally a constant 5.12 Vdc.
Controller 8-Pin Mini-DIN Pinout Meter and Gauge 8-Pin Mini-DIN Pinout
Pin Function Pin Function
Not Connected Optional: 4–20 mA primary output signal Not connected Optional: 4–20 mA primary output signal
Static 5.12 Vdc by default. Optional: secondary analog
output (4–20 mA, 0–5 Vdc, 1–5 Vdc, 0–10 Vdc) or alarm
Static 5.12 Vdc Optional: secondary analog output
(4–20 mA, 0–5 Vdc, 1–5 Vdc, 0–10 Vdc) or alarm
Serial RS-232 RX / RS-485(−) Input Signal (receive) Serial RS-232RX / RS-485(–) input signal (receive)
Analog Setpoint Input Remote tare (ground to tare)
Serial RS-232 TX / RS-485(+) Output Signal (send) Serial RS-232TX / RS-485(+) output signal (send)
0–5 Vdc Optional: 1–5 Vdc or 0–10 Vdc output signal 0–5 Vdc Optional: 1–5 Vdc or 0–10 Vdc output signal
Power In (as described above) Power in (as described above)
Ground (common for power, digital
communications, analog signals, and alarms) Ground (common for power, digital communications, analog signals, and alarms)
The above pinouts are applicable to all devices with the mini-DIN connector. The availability of dierent output signals
depends on the options ordered. Optional configurations are noted on the unit’s calibration sheet.
Male ConnectorFemale Connector
1
4
5
68
7
3
2 1
4
5
6
87
3
2

Installation January 2023 • Rev. 0 • Standard Devices User Manual 9
Analog Signals
Primary Analog Output Signal
Most devices include a primary analog output signal that
is linear over its entire range. For ranges that start at 0
Vdc, a zero-pressure or no-flow condition is indicated at
approximately 0.010 Vdc. Full scale of the device is indicated
by the top of the range: 5 Vdc for 0–5 Vdc, 20 mA for 4–20
mA signals, and so on.
Option: Secondary Analog Output Signal
The default 8-pin mini-DIN connector places the secondary
analog output on pin 2 for both voltage and current signals.
Your device’s secondary analog signal may dier from its
primary output signal.
A calibration sheet ships with the device showing which
output signals were ordered.
Option: 4–20 mA Current Output Signal
Controllers: If the controller has a primary or secondary
4–20 mA current output signal, it requires 15–30 Vdc power.
Meters and gauges: If the meter or gauge has a 4–20 mA
current primary or secondary output signal, it requires 12–24
Vdc power.
⚠ Warning: Do not connect 4–20 mA devices
to “loop powered” systems, as this damages
portions of the circuitry beyond repair and voids
the warranty. If the device must interface with
existing loop powered systems, use a signal
isolator and a separate power supply.
Using Ground to Tare (Meters and Gauges)
You can tare your meter or gauge remotely by momentarily
grounding pin 4. When the switch is closed, the device tares.
Operation resumes when the switch is released. You can also
tare with the front controls (page 12) or serial commands
(page 30). Taring flow should only be done in a true zero-
flow condition and taring pressure should be done when the
device is open to the atmosphere.
Option: Charging a Portable Meter or Gauge
Portable batteries are partially charged before shipping.
When fully charged, the typical battery life is 18 hours with
a monochrome display, or 8 hours with a TFT color display.
Dimming the backlight increases battery life. When the battery
indicator displays as completely empty, about 15 minutes of
battery life remain.
Charge the device using the supplied USB cable (micro-B to
type A) or a similar cable. Any USB outlet on a computer or
portable power supply may be used, but charging is fastest
(approximately 3.5 hours) when using the supplied 2.0 A
power supply.
The red indicator LED on top of the device lights up to indicate
that the unit is charging, and turns o when the battery is
fully charged.
Your meter may be used while it is charging. If the battery has
been fully depleted, you may need to charge the meter for a
full minute before the device can be turned on.
! Warning: The safe charging temperature
range is 0–45°C (32–113°F). If internal
sensors detect temperatures outside of
this range, the battery will not charge.
Pin 4
Ground
Pin 8
Connect to tare


Main display with battery
information and an active charging
indicator (lightning bolt).

Installation January 2023 • Rev. 0 • Standard Devices User Manual 10
Bleed Ports Liquid Devices
Liquid devices include bleed ports (8-32 Nylon-tipped screw)
on the front for the removal of air bubbles.
✓ Note: A small amount of liquid will leak from the
device during this procedure. Take necessary
precautions to prevent damage to anything nearby.
Bleed both of the ports as follows:
. With the device installed, start a flow greater than 50% of
full flow. Gently loosen the upstream bleed port screw 1
to 2 turns, or until liquid begins to leak from the threads.
Do not remove the screw, as it has pressure behind it, is
very small, easy to lose, and delicate to rethread.
2. Gently tap the flow body to remove air bubbles (screwdriver
handles work well). This may not be visible or audible.
3. Gently tighten the screw until the leakage stops, taking
care not to crush the nylon tip.
4. Repeat steps 1–3 with the downstream port.
✓ Note: If your device is mounted in an inverted
position, avoid using the bleed screws, as liquid
may leak and cause permanent damage.
5⁄64″ 8-32 Nylon-tipped
hex bleed screw
Loosen to bleed liquid,
but do not remove

Basic Operations January 2023 • Rev. 0 • Standard Devices User Manual 11
Basic Operations
This section covers the most common functions of your
device. Settings for more specialized needs can be found
after this section. Some information found in this section may
be repeated in other sections for ease of section navigation.
Viewing Live Data
The display screen has a number of options for displaying
live data. There are various ways to modify the display screen
functions, brightness, or orientation. Refer to display setup
(page 27).
The display screen displays live data for all parameters
measured by the device simultaneously. Sensors measure
data 1000 times per second and the LCD display updates
10 times per second. The measured data is displayed in the
units designated by the device (page 24).
Interacting with the Device
The images to the right show the buttons of the device display.
These images compare the dierences between a mass flow
controller, a pressure controller, and a liquid meter.
Below are the default button functions and their locations
on a given device. Pressing a button to highlight a reading
changes what is centered in the display.
• Highlight pressure: all devices use button 1.
• Highlight volumetric flow: mass flow
and liquid devices use button 4. Pressure
devices do not measure volumetric flow.
• Highlight mass flow: mass flow devices use button 5.
Pressure and liquid devices do not measure mass flow.
• Highlight temperature: mass flow and
liquid devices use button 2. Pressure
devices do not measure temperature.
• Changing the setpoint: controllers use
button 3. Meters and gauges do not have a
setpoint function. Refer to page 12 for more
information on changing the setpoint.
• Taring the device: meters and gauges use
button 3 (TARE FLOW for meters and TARE PRESS
for gauges). Pressure controllers use button 2.
Mass flow controllers and liquid controllers do not
have a tare button on the default display. Refer to
page 12 for further information on taring.
• Enter the menu or move to the next
screen: all devices use button 6.
• Enable/Disable the backlight:
all devices use button 7.
Some devices don't use all 7 buttons. If an unused button is
pressed, nothing happens. Button functions can be modified
under display setup (page 27).
Status Messages
Status messages are shown to the right of the highlighted
central measurement:
ADC Analog-digital converter error
EXH Exhaust mode active
(Controllers only)
HLD Valve hold active
(Controllers only)
LCK Front display is locked
MOV Mass flow over range of
mass flow device
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
Main display of a pressure
controller measuring
gauge pressure.
Main display of a mass
flow controller measuring
the mass flow of air.
Main display of a liquid
meter measuring the
volumetric flow of water.

Basic Operations January 2023 • Rev. 0 • Standard Devices User Manual 12
Taring the Device
Taring is an important practice that ensures your device
provides its most accurate measurements. This function gives
a zeroed reference point for measurements. For devices
installed with a barometer, the absolute pressure reading
can be tared when venting to the local barometric pressure.
On mass flow meters, liquid meters, and pressure controllers/
gauges, the tare button is found on the main screen. Button 3
for meters and gauges and button 2 for pressure controllers.
To access taring for mass flow and liquid controllers, press
the MENU button and then the TARE FLOW option.
Depending on the device, there may be options for multiple
tares (usually flow and liquid devices with a barometer). In
these instances, the button displays as TARES and provides
a screen with the available measurements to tare.
It is also possible for controllers to auto-tare when the setpoint
is at zero for a designated time (page 17).
How to Tare
Taring Flow (Mass Flow and Liquid Devices)
TARE FLOW or MENU →TARES →TARE FLOW
Taring flow should take place at the expected process
pressure with no active flow. When Tare Flow is pressed, a
message, “ENSURE NO FLOW BEFORE PRESSING TARE” may
display on some devices. If so, press TARE to confirm taring
the flow.
Taring Pressure
TARE PRESS or MENU →TARES →TARE PRESS
Taring pressure requires the device to be open to atmosphere.
Absolute pressure tares also require an optional barometer
installed at production. When pressed, a message, “PRESS
TARE WHEN VENTED TO AMBIENT WITH NO FLOW. Current
pressure offset:” displays. Press TARE to confirm taring
the pressure.
When to Tare
• Before every new measurement cycle.
• After significant changes in temperature or pressure.
• After dropping or bumping the device.
• After changing the device’s orientation.
Changing the Setpoint Controllers
Setpoints manage how much flow passes through the device
or the pressure level in the system. Pressing the setpoint
button from the main screen (button 3) moves the screen to
the setpoint selection screen.
The setpoint selection screen indicates the engineering units
and maximum allowable setpoint (e.g., SLPM: +1.000 Max).
To establish a setpoint, enter the desired value and press SET.
The device immediately begins to control the flow or pressure.
To give a zero setpoint, press CLEAR and then SET.
For more detailed options and settings, including setpoint
ramping, see page 17.
Setpoint selection screen.
Tare flow confirmation screen.
Tare mass flow by selecting
TARE FLOW from the main menu
(top), or TARES if the device
has a barometer (above).
Tare pressure
confirmation screen.

Basic Operations January 2023 • Rev. 0 • Standard Devices User Manual 13
Selecting Gas Mass Flow Devices
MENU →SETUP →Active Gas
In most cases, mass flow devices are physically calibrated at
the factory using air. Gas Select™ allows you to reconfigure
the device to flow a dierent gas without any need to send it
back for a physical recalibration.
Gas selection is found in the setup menu. To access the menu,
press MENU and then SETUP . When the cursor is pointing at
Active Gas, press SELECT.
Within this menu, there are a variety of gas categories, recent
selections, and ™ mixes. Each category lists a
subset of available gases and preconfigured mixtures. Note
that not all gases are available on all devices. Corrosive gases
and refrigerants are only available on the anti-corrosive line
of mass flow devices.
As soon as you press SET from the gas list, your device
reconfigures its flow rate calculations to the newly selected
gas properties. There is no need to restart the device or
perform any other action.
Your current gas selection appears just below the unit’s
indicator on the right side of the main display.
It is also possible to program the device to calculate the mass
flow of a custom gas mixture (™ mixes). The device
can have up to twenty of these mixtures saved at a time. For
more information and instructions on creating custom gas
mixing, see page 23.
Category and Gas List Controls
• PAGE advances the view to the next
page of categories or gases.
• SELECT (in the category list) opens a
list of gases in that category.
• SET (in the gas list) immediately loads the gas
measurement properties and exits to the setup menu.
Setup menu.
First page of the Gas
Select™ category list.
First page of the Gas Select™
standard category.

Data Screens January 2023 • Rev. 0 • Standard Devices User Manual 14
Data Screens
Depending on the device, there can be up to four screens providing dierent information based on your needs. Further settings
for the data screens can be found on page 27.
Live Screen
The live screen is the default data screen of the device. This
provides access to the dierent measurements that a device
may be taking. For more information, see the Viewing Live
Data section under the Basic Operations on page 11.
Min/Max Screen
MENU →SETUP →Display →Data
Screens →Min/Max Screen
The Min/Max screen displays the current selected
measurement value as well as the minimum and maximum
measurement of that value since the last reset. To enable the
screen, change the option from Hide to Show.
On the Min/Max Screen screen are four options:
• RESET erases the current measured minimum
and maximum and returns them to zero.
• SHOW VALUE provides possible measurements
to display on the screen, along with their
minimum and maximum values.
• SETPT is only available on controllers. It displays
the current setpoint. Press to set or clear a setpoint.
See page 17 for setpoint instructions.
• NEXT moves to the totalizer screen (if enabled)
or MENU opens the device menu.
Totalizer Screens Flow Devices
MENU →SETUP →Sensor →Totalizer →
Totalizer 1 or Totalizer 2
Mass flow and liquid devices have optional totalizers that
can be configured on the device. To enable the totalizer
and configure its settings, see page 25. The Totalizer
displays the total amount of mass or volume that has flowed
through the instrument since its last reset. It also enables
batch dispensing for controllers (page 19).
• M AVG or V AVG shows totalizer averaging, which
displays average flow rate since last reset, updated live.
• SLPM (or another measurement of mass flow) displays
the live flow rate. Press to change engineering units.
• SETPT displays the current setpoint on controllers.
Press to set or clear a setpoint (page 17).
• PEAK displays the peak flow rate
since the last totalizer reset.
• BATCH selects the quantity to be dispensed
in each batch. -NONE- appears if the batch
mode is o. Only available on controllers.
• RESET clears all totalized data and immediately
resets the timer to 0. Starts a new batch immediately,
if the controller has a non-zero setpoint.
• MENU enters the main menu.
• NEXT moves to the second totalizer (if enabled).
Live screen
Min/Max screen.
Totalizer displaying a mass flow
average without a batch.

Data Screens January 2023 • Rev. 0 • Standard Devices User Manual 15
Option: Color TFT Display
Instruments ordered with a color display are functionally the
same as standard backlit monochrome instruments. The color
enables additional on-screen information.
Multi-Color Display Indicators
• GREEN: Parameter labels and adjustments
associated with the button directly above or
below the label are presented in green.
• WHITE: Parameter are displayed in white when the
device is operating within device specifications.
• RED: Parameters are displayed in red when its
value exceeds 128% of the device’s specifications.
• YELLOW: Menu items that are ready to be
selected appear in yellow. The color replaces the
> symbol in selections on monochrome display.
✓ Note: Press the logo to turn o the color
display backlight. The flow controller remains
in operation while the backlight is o.
✓ Note: Color displays will require an additional
40 mA when using a 12 Vdc power supply. All
other device specifications from your device’s
specification sheet remain in eect.
To modify the display screen functions, the brightness, or
orientation refer to display setup (page 27).
TFT display with air currently
selected in yellow.
TFT display.

Device Information January 2023 • Rev. 0 • Standard Devices User Manual 16
Device Information
The ABOUT menu (MENU →ABOUT) contains information for
setup, configuration, and troubleshooting.
Basic Device Information
MENU → ABOUT →About Device
This includes information on the following:
• MODEL:Device model
• SERIAL NO:Serial number
• DATE MFG:Manufacturing date
• DATE CAL:Most-recent calibration date
• CAL BY:Initials of the person who calibrated the device
• SW:Firmware version
Device Full Scale Ranges
MENU → ABOUT →Full Scale Ranges
This displays the maximum calibrated range of available flow
and pressure readings.
• Mass flow devices include mass flow,
volumetric flow, and pressure.
• Liquid devices include volumetric flow and pressure.
• Pressure devices include the various
pressures that it can measure.
Manufacturer Information
MENU → ABOUT →About Manufacturer
About Manufacturer includes:
• Manufacturer name
• Web address
• Phone number
• Email address
About device screen.
Full scale ranges screen.
About menu.

Process Control January 2023 • Rev. 0 • Standard Devices User Manual 17
Process Control Controllers
For a controller to regulate the flow or pressure, it needs to
have a setpoint established. The setpoint is the amount of
flow or the pressure that the controller attempts to achieve
in a process line.
Setpoint
SETPT or MENU →CONTROL → Setpt
The setpoint selection screen indicates the engineering
units and maximum allowable setpoint (e.g., SLPM: +1.000
Max).
To establish a setpoint, enter the desired value and press
SET , the device immediately begins to control the flow or
pressure. A zero setpoint can be established by selecting
CLEAR and then SET.
Setpoint Options
The setpoint can be configured with a few options to better
control your process based on your needs. Below are various
setpoint options and functions.
Auto-tare and Zero Setpoint Options
MENU →CONTROL → Setpoint Setup → Zero Setpoint
A controller can automatically tare itself when it has a zero
setpoint. Once the setpoint is given, the device waits a
specified amount of time before taring. Delay Before Tare
manages how much time the controller waits before taring.
Make sure the delay provides enough time for the process
to stop flow and settle.
!Caution: Auto-tare typically is not
recommended for pressure controllers.
Ramp controls whether the device honors setpoint ramping
down (page 18) or immediately goes to the zero setpoint.
If set as Honor ramp to 0, the controller moves down to a
zero setpoint at the specified ramp rate. If set as Instantly
to 0, the controller immediately moves the process to zero
when a zero setpoint is given.
Setpoint Source
MENU →CONTROL → Setpoint Setup → Setpoint Source
Controllers with RS-232 or RS-485 communication accept
setpoints from the front panel and serial commands
(page 29). Alternatively, an analog source can be used
instead.
• When the source is set to Serial/Front Panel, the
controller accepts input from either the front panel
or an RS-232/RS-485 connection. Neither source
is a slave of the other, and the controller accepts
the most recent command from either source.
• When the source is set to Analog, the device
ignores serial setpoint commands and prevents
setpoint input from the front panel.
Control menu.
Setpoint source menu.Zero setpoint (auto-tare) menu.
Setpoint screen.

Process Control January 2023 • Rev. 0 • Standard Devices User Manual 18
Idle Connection Response
MENU →CONTROL →Setpoint Setup → On Comm Timeout
If the communication connection is timed out, the controller
can either set a zero setpoint, or maintain the last setpoint
given. The timeout time is infinite by default and can be
manually defined (page 27).
Setpoint on Power-Up
By default, the controller remembers its last setpoint across
power cycles, but a specific setpoint can be configured to be
used on every power-up. It is possible to also configure the
power-up setpoint to follow the ramp rate.
Power-Up Setpoint Value
MENU →CONTROL →Setpoint Setup →
Power Up Setpoint →Value
By selecting Fixed Setpoint and entering a value, the
device moves to the same setpoint every time after power-up,
ignoring whatever the setpoint was before being powered o.
If the setpoint is digitally provided more than every few
minutes, use a fixed setpoint on power-up to avoid wearing
out non-volatile memory in the device.
Power-Up Setpoint with Ramping
MENU →CONTROL →Setpoint Setup →
Power Up Setpoint →Ramp
This designates if the device follows the ramp rate or not after
powering on. The device can either honor the ramp rate and
ramp up (Honor from 0) or jump immediately to the power-up
setpoint (Jump from 0) .
For more information on ramping, see Setpoint Ramping
(page 18). This functions the same as the power-up option
in Ramping Options. Changing one overwrites the other.
Setpoint Limits
MENU →CONTROL →Setpoint Setup → Setpoint Limits
The setpoint limits menu configures upper and lower
limits for selecting a setpoint. By default, the limits are the
controller's measuring range, but more strict limits may be
beneficial in certain applications.
Over a serial connection, the controller rejects requests of
a setpoint outside the limit and an error is returned. When
using an analog setpoint signal, setpoints that are outside of
the setpoint limits are treated as if they were at the nearest
limit. For example, if you request a setpoint via analog that is
below the lower limit, the controller sets the setpoint at the
lower limit.
!Caution: Flow controllers that have non-zero
lower setpoint limits cannot be set to stop flow
until the lower limit has been cleared.
✓ Note: When changing from one control loop variable
to another, the controller remembers setpoint limits
as percentages of full scale. For example, a 10-SLPM
limit on a 20-SLPM controller (50% of full scale) will
become a limit of 80 PSIA (50% of 160 PSIA) if the
control loop is changed to absolute pressure.
Setpoint Ramping
MENU →CONTROL →Setpoint Ramp
Setpoint ramping regulates how quickly the controller reaches
a new setpoint. It is often used to prevent bursts of pressure
or flow from damaging delicate instruments at the start of a
process.
To activate setpoint ramping, set a maximum ramp rate and
configure when to enable the ramping function.
Ramp Rate
• Ramp changes the maximum rate of change.
• Units changes the engineering units used.
• Set By Delta / Time allows for more
detailed control of the ramp rate including
changing the value of the time period.
Setting a maximum ramp rate.
Configuring delta / time ramping.
Setpoint ramping menu.
Power-up setpoint menu.
Setting a minimum setpoint.
Setpoint limits menu.
Communication timeout menu.

Process Control January 2023 • Rev. 0 • Standard Devices User Manual 19
Ramping Options
Ramping options control when ramping occurs. This can be
when the setpoint changes, when the device powers on, or
when setting a zero setpoint.
• Ramp Up can toggle between on and o. When o,
the ramp rate will not be honored when increasing
flow or pressure to reach a given setpoint.
• Ramp Down can toggle between on and o. When o,
the ramp rate will not be honored when decreasing
flow or pressure to reach a given setpoint.
• Power Up toggles between Allow Ramp and No
Ramp. If set to No Ramp, the device ignores the ramp
rate just after powering on, otherwise it honors the
ramp rate starting at a zero setpoint. This functions
the same as power-up setpoint with ramping
(page 18). Changing one overwrites the other.
• 0 Setpt determines if the controller ramps when
a zero setpoint is set. If this setting is set to No
Ramp when given a zero setpoint, the controller
immediately moves to the zero setpoint. Otherwise,
the controller ramps at the selected rate.
✓ Note: Setpoint ramping can be used with flow
or pressure setpoints, depending on the control
loop selected. Ramping for pressure control
limits how quickly pressure changes before
reaching the setpoint. To limit flow rates directly
while controlling pressure, see page 21.
Batch Dispensing Flow Controllers
BATCH or MENU →CONTROL →Batch 1 or Batch 2
Batch dispensing flows a set volume of gas. Once that volume
of gas flows through the controller, the valve closes and flow
stops. You can repeat batches with a single button press.
To utilize batching, at least one totalizer must be enabled.
The BATCH button can be found on the totalizer screen
(page 14). When selecting from the CONTROL menu, Batch
1is for totalizer 1 and Batch 2 is for totalizer 2. Only set one
batch at a time to avoid premature stoppage in flow.
Start a Batch
. Choose the total quantity to be dispensed in each batch.
Press SET to accept the new batch size.
2. Once a batch size has been set, give the controller a
setpoint (page 17). Flow begins as soon as you press
SET.
✓ Note: Batch dispensing requires an active batch size
and a non-zero setpoint. If your controller already
has a non-zero setpoint, batching begins as soon
as you press SET from the batch size screen.
While a batch is being dispensed, the remaining quantity of
to be dispensed is displayed about the RESET and BATCH
buttons. When the batch is complete, –DONE– displays just
above the BATCH button and flow stops automatically. The
setpoint is not cleared and remains the same.
The batch size can be changed while a batch is in progress.
If the new batch size is larger than the current totalized flow,
then flow continues until the new value is reached. If the new
batch size is smaller than the current totalized flow, then the
flow stops immediately. Press RESET to start the new batch.
Setpoint Ramping
Setting a maximum ramp rate.
Configuring delta / time ramping.
Setpoint ramping menu.
Selecting a batch size of 1000 SL.
Totalizer displaying a mass
flow average without a batch,
with a batch in progress,
and with a finished batch.

Process Control January 2023 • Rev. 0 • Standard Devices User Manual 20
Repeat a Batch
• For an identical batch, press RESET.
Flow begins immediately.
• For a new batch of a dierent size, press BATCH,
and select the new batch size. If there is a non-zero
setpoint, flow begins as soon as SET is pressed.
Pause or Cancel a Batch
• To pause flow while a batch is in progress, change the
setpoint to 0by pressing SETPT → CLEAR → SET within
the totalizer menu. This does not stop the timer. To
resume, change the setpoint to a non-zero setpoint.
• To remove a batch setting, press BATCH → CLEAR
→ SET. Deleting the batch does not aect the
setpoint. Flow will continue at the setpoint rate.
!Warning: Flow resumes immediately at the current
setpoint when batch dispensing is turned o.
✓ Note: The controller retains batch size
across power cycles. The batch size must
be manually cleared to remove it.
Valve Drive Percentage Display
MENU →CONTROL → Show Valve
The valve drive is represented as a percentage of the total
possible voltage driven to the valve. While drive percentage
does not directly correlate with percentage open, a drive
percentage of 0% indicates the valve is not open.
Viewing the valve drive percentage can be helpful for
troubleshooting. An increase in percentage over time likely
indicates a blockage in the system where more voltage is
required to drive the valve to attain the same amount of flow.
This information may be displayed on the main display and/
or as part of transmitted serial data. There are four valve
display options:
• None:No valve information is displayed.
• Main Screen:Only on the main display.
• Digital Data:Only in the serial data frame.
• Screen and Digital:Both the main
display and serial data frame.
Control Loop
The control loop manages what parameter a controller
controls as well as how the controller reacts to changes
within the system.
Controlled Variable
MENU → CONTROL →Control Loop →Control
The controlled variable is the measurement the controller
attempts to regulate to the given setpoint. Controllers can only
control one measurement at a time, but they still measure the
other variables during that time. Below are the lists of possible
variables each controller can control.
Mass Flow Controllers
Mass flow controllers can control mass flow, volumetric flow,
pressure (absolute or gauge) and the valve drive.
Liquid Controllers
Liquid controllers can control volumetric flow, gauge pressure,
and the valve drive.
Pressure Controllers
Pressure controllers can only control the pressure of the
device. Selectable control loop variables include pressure
(absolute, gauge, or dierential) and valve drive.
✓ Note: When pressure is the selected variable,
all controllers with upstream valves control the
outlet pressure. Those with downstream valves
control upstream back pressure, but these devices
must be configured for this type of control.
!Warning: When changing the control loop,
the PID settings may need adjusting for
optimal stability and speed of response.
Valve display menu Valve percentage on the main
display, above the large numbers.