Alicat Part Number Decoder
There are many ways to customize your Alicat, but added options can sometimes make your part number look like alphabet soup. We’ve compiled the listings below to help you decipher the various elements of your Alicat part number.
Most Alicat part numbers consist of a top-level part number and a group of adder codes. Top-level part number elements are separated by hyphens (-), and adder codes are separated by commas (,). A forward slash (/) separates these two groups of your Alicat part number.
Top level part numbers
Top level elements appear before the forward slash (/) in the Alicat part number, as shown in bold in the example below.
MCRWD-40SLPM-TFTRD-DB15-MODBUS-485-54X54-SAE-EPDM-CC / CM, 102P, RIN, CIN, GAS: CH4, RANGE (85 SCFH), CLV, PU: V, TOT (99999.99 SCF), BAUD: 38400, STP: 20°C, CPNT (5, 10%), 17025, DS
Mainline Laminar DP Mass Flow and Pressure Devices
Instrument Types
Primary Instrument Types
L Liquid flow meter
M Gas mass flow meter
P Pressure gauge
Secondary Instrument Types
3 Remote pressure sense port
B Battery-powered
C Flow or pressure controller
D Dual valves
E Enclosed valve
H Hammerhead valves
P Large Pneutronics valve
Q High pressure gas flow
R High-flow Rolamite valve
S Stainless sensor for corrosives
SS Stainless sensor for corrosives with 316L body
T Stream switching controller
V Enclosed valve plus pneumatic shutoff valve
W Whisper™ low pressure drop
Stock Instrument Ranges
2INH2OD Differential pressure range
2INH2OG Gauge pressure range
xCCM Liquid flow range (ccm)
EXTSEN External pressure sensor
xLPM Liquid flow range (lpm)
xPSIA Absolute pressure range (psi)
xPSID Differential pressure range (psi)
xPSIG Gauge pressure range (psi)
xSCCM Gas flow range (sccm)
xSLPM Gas flow range (slpm)
xTORRA Absolute pressure range (torr)
Display Options
D Backlit monochrome
O No display
RD Backlit monochrome remote display
RDE Backlit monochrome enclosed remote display
TFT Backlit color
TFTRD Backlit color remote display
TFTRDE Backlit color enclosed remote display
Connector Options
[no notation] ASCII and Modbus RTU over RS-232 communication (8-pin mini-DIN)
DB9x other 9-pin D-sub with custom x pinout
DB9M male 9-pin D-sub with Alicat pinout
DB15x other male 15-pin D-sub with custom x pinout
DB15 male 15-pin D-sub with Alicat pinout
I 6-pin locking plus 8-pin mini-DIN plus power jack
IO 6-pin locking connector only
ISC 4-pin locking DIN for external sensor
M12 Threaded 8-pin M12 connector plus 8-pin mini-DIN
M12O Threaded 8-pin connector only
NJ No power jack
RJ45 8-pin RJ45
Protocol Options
[no notation] ASCII and Modbus RTU over RS-232 communication (8-pin mini-DIN)
485 ASCII Modbus RTU over RS-485 communication
DNET DeviceNet
ECAT EtherCAT®
EIP EtherNet/IP
IOLINKA Suitable for devices with current requirements of 200 - 500mA
IOLINKB Suitable for devices requiring higher power, e.g. rolamites, hammereads, etc.
MODBUS Modbus-RTU only needed on -X
MODTCPIP Modbus TCP/IP
PROFIBUS PROFIBUS DP-V0
PROFINET Profinet
Valve Options
[no notation] Default valve (controllers)
A0## Extra small proportional control valve, e.g. A012
DS Downstream valve position
NO Normally open valve
PAR Rolamite valve parallel wound coil
PCA## High performance valve e.g. PCA13/PCA40. Anti corrosive valve orifice size
PCV## Small Pneutronics valve orifice size, e.g. PCV30
RV Detached remote valve
A515 Large ASCO cartridge valve
SV Small Pneutronics stainless valve
##x## Rolamite valve hole pattern, e.g. 20X124
Uncommon valve options:
RVUS Remote upstream inlet valve
2ST 2-stage valve control
Build Options
[no notation] NPT threads
30PSIA Low-range sensor for gas flow (legacy)
AL Aluminum body
ALM Alarm output
##BSPP British Standard Pipe threads
CC Conformal coating
##COMP Number of welded compression fittings
DPORT Down port connections
EPDM EPDM elastomers
FFKM FFKM elastomers
HLC Helium leak check
IB Integrated barometer
IP## Ingress protection rating, e.g. IP67
IPC Integrated potentiometer control
IPJ Industrial power jack
NESSI NeSSI-compatible flow body
xNPT Non-default size NPT ports for the flow body, e.g. 1.0NPT
OXC Oxygen Cleaning
Uncommon build options
M4MH M4 mounting holes
PJ Power jack
Build Options cont.
SAE# SAE threads
SE Side-mounted electronics
SG Separate ground
SIL Sulfur inert laminate
SILICONE Silicone elastomers
ST Standard temperature sensor (pressure devices only)
TMDPORT# Top-mount down port
##VCRF/##VCRM Welded VCR fittings
##VCO Welded VCO fittings
VITON FKM/Viton elastomers
X CSA Class 1 Division 2/ATEX Zone 2
Adder Codes
Adder codes appear after the forward slash (/) in the Alicat part number, as shown in bold in the example below.
MCRWD-40SLPM-TFTRD-DB15-MODBUS-485-54X54-SAE-EPDM-CC / CM, 102P, RIN, CIN, GAS: CH4, RANGE (85 SCFH), CLV, PU: V, TOT (99999.99 SCF), BAUD: 38400, STP: 20°C, CPNT (5, 10%), 17025, DS
Analog Type
1x 1-5 Vdc
5x 0-5 Vdc
10x 0-10 Vdc
Cx 4-20 mA
x2x Secondary signal
Analog Inputs
xIN Setpoint input
Analog Outputs
xM Gas mass flow output
xP Pressure output
xT Temperature output
xV Gas or liquid volumetric flow output
- 17025 ISO17025 certification (sometimes written as 17025HF or 17025LF)
- AGB Absolute, guage, and baro pressure in data frame
- ALHx: y High flow alarm above y setpoint
- ALLx: y Low flow alarm below y setpoint
- 5 5 Vdc analog output
- 12 12 Vdc analog output
- 24 24 Vdc analog output
- OD 500 mA open drain
- AVG OFF Averaging off
- BAUD: x Baud rate
- BD Bidirectional flow or gauge pressure calibration
- CLP Closed-loop pressure control
- CLPG Closed-loop gauge pressure control
- CLR Closed-loop ramp
- CLV Closed-loop volumetric flow control
- CPNT (x,y%) Additional calibration points
- DB: x Deadband x% preset
- DS Downstream valve placement
- FLOW Flow rate for tuning pressure control, e.g. FLOW (10 SLPM, H2)
- GAS: x Initial gas selection
- HC High-accuracy flow or pressure calibration
- HLCV Helium leak check under vacuum
- HLCP Helium leak check under positive pressure
- ID: x RS-232/485 unit address
- [IPx] Custom secondary output on industrial connector
- LCK Display locked
- LIQUID: x Custom liquid calibration, not required for water
- LVD Valve drive % shown on display
- MAXAVG Maximum geometric running averaging
- NONWAR Any damage caused will not be covered under warranty
- NO-SERVICE No returns or repairs
- NTP: x Custom NTP conditions
- OPL: x Overpressure limit for valve closure
- OXC Oxygen cleaning
- P1: x Expected inlet pressure, e.g. P1:100 PSIG, P2: 50 PSIG
- P2: x Expected outlet pressure
- PD (x, y) Custom P=x and D=y valve tuning
- PD2I (x, y, z) Custom P=x, D=y, and I=z valve tuning
- POP Power over Profibus
- PROFIBUS: x Profibus unit address
- PRANGEX Pressure ranges of internal and external sensors
- PU: x Selects flow parameter on power-up
- PUB Power up with backlight on
- PUGS: x Gas selection on power-up
- PUL: x Pulsed analog output at x flow total
- PUSP: x Setpoint on power-up
- PUT: x Tare after x seconds on power-up
- RANGE (x) Custom calibration range
- RCPNT (x,y,z) Replacement calibration points
- RD: x Length of cable for remote display
- RIN Local selection of analog/digital setpoint
- RTL Right-to-left flow direction
- RVD Valve drive % shown in serial data
- SENIN: x External pressure sensor input signal
- SR: x Streaming rate in x milliseconds
- STP: x Custom STP conditions
- STR Preset to streaming mode
- TOT Integrated flow totalizer
- TOT (x y, R/F/E) Custom resolution x and/or units y
- E Rolls over and flashes OVR error at max count
- F Freezes and flashes OVR error at max count
- R Rolls over at max count
- TOTAVG Totalizer averaging
- TOTBDx Bidirectional totalizers:
- TOTBD1 Negative values subtract from total
- TOTBD3 Negative values have no effect
- TOTBD4 Negative values ignored, resets at zero
- TOTR Reset totalizer on selected pin
- VOL: x Expected closed volume x