358 Series MLW mass flow meters
High accuracy, multi-parameter, low pressure drop laminar mass flow meter.
358 Series MLW low pressure drop mass flow meters designed to measure mass flow, volumetric flow, gas pressure, and gas temperature for 98+ gases and 20 custom-defined mixtures across a very wide flow range from 0.5 smL/min to 1000 sL/min – 0.01% to 100% of full scale. Making them ideal for on-the-go process calibration, verification (ex. sampling pump), and validation.
Millisecond-response times immediately upon powering up, to display flow, pressure, and temperature readings in real-time, in your choice of engineering units. Backlit LCD readout (Optional color TFT dispay)
Custom process ports and electrical connectors, and your choice of EtherNet/IP, EtherCAT, DeviceNet, Profibus, Modbus (RTU and TCP/IP), or serial communications for easy integration into your industrial process.
| Accuracy | [0,5 smL/min – 5 smL/min] : ±0.8% RD and ±0.2% FS. [10 smL/min – 100 sL/min] : ±0.75% RD or ±0.1% FS whichever is greater. [250 sL/min – 1000 sL/min] : ±0.8% RD and ±0.2% FS. |
| Calibrations | Performed at standard conditions 101.4 kPa and 21.1 °C unless otherwise requested or stated. |
| Repeatability | ± (0.2% of reading + 0.02% of full scale) |
| Sensor Response Time | <1 ms |
| Instrument warm-up time | < 1 s |
| Operating temperature | -10 to +60 °C |
| Analog signals options | 4–20 mA, 0–5 VDC, 1–5 VDC, 0–10 VDC |
| Digital signals options | RS-232 Serial by default RS-485 Serial, Modbus RTU (over RS-232 or RS-485), Modbus TCP/IP, DeviceNet, EtherCAT, EtherNet/IP, Profibus, Profinet. |
| Electrical Connection Options | 8 pin mini-DIN (default), 6 pin locking, 8 pin M12, DB-9, DB-15 |
| Maximum internal gas pressure (static) | Max 3.1 bar(g) |
| Maximum instantaneous differential pressure | Max 690 mbar |
| Materials | 302 / 303 stainless steel, Viton®, glass-reinforced polyphenylene sulfide, alumina, glass, gold, silicon, heat-cured epoxy, heat-cured silicone rubber |
| Connections | [0,5 smL/min – 20 smL/min] : M5 female thread (10-32 compatible). [50 smL/min – 5 sL/min] : 1/8′′ NPT female. [10 sL/min – 20 sL/min] : 1/4′′ NPT female. [40 sL/min] : 1/2′′ NPT female. [50 sL/min – 500 sL/min] : 3/4′′ NPT female. [1000 sL/min] : 2′′ NPT female. Options : Compression, face seal, push-to-connect, BSPP, SAE, or Swagelok® (including tube, VCO®, and VCR®-compatible). |
| Description | Part Number | |
|---|---|---|
| Universal Baseplate : A universal bench top stand commonly used with our flowmeters, controllers or rotameters. | 35780 |  |
| Pelicase for maximum safety during transport | 1200-000-110E |  |
| RS232 Communication Cable : 8 pin mini-DIN to D-SUB 9 (1.8 m / 6 feet) | 35754 |  |
| RS232 Communication Cable + Mass Flow Interface Software, include : – Mass Flow Interface Softaware – 8 pin mini-DIN to D-SUB 9 communication cable (1.8 m / 6 feet) – Micro USB communication cable (for portable meters) | 31754 | |
| USB to RS232 adapter | 35782 |  |
| USB to RS232 adapter (8x ports) | USB-RS232 |  |
Filters
| Description | Part Number | |
|---|---|---|
| 1/8″ NPT Filters: 20μ filter + element 20μ filter element (replacement; includes fresh O-rings) | ILF-1/8-20 ILFE20 |  |
| 1/4″ NPT Filters: 40μ filter + element 40μ filter element (replacement; includes fresh O-rings) | ILF-1/4-40 ILFE40 | |
| 1/2″ NPT Filters: 40μ filter + element 40μ filter element (replacement; includes fresh O-rings) | ILF-1/2-40 ILFE40L | |
| 3/4″ NPT Filters: 40μ filter + element 40μ filter element (replacement; includes fresh O-rings) | ILF-3/4-40 ILFE40L | |
Fittings and adapters
# 10-32 UNC
| Description | Connection 1 size | Connection 2 size | Part Number | |
|---|---|---|---|---|
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/8 in. Tube OD x #10-32 Male Thread | 1/8″ Tube fitting | #10-32 UNC | SWA_SS-200-1-0157 |  |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/4 in. Tube OD x #10-32 Male Thread | 1/4″ Tube fitting | #10-32 UNC | SWA_SS-400-1-0256 | |
1/8″ NPT
| Description | Connection 1 size | Connection 2 size | Part Number | |
|---|---|---|---|---|
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/8 in. Tube OD x 1/8 in. Male NPT | 1/8″ Tube fitting | 1/8″ Male NPT | SWA_SS-200-1-2 |  |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/4 in. Tube OD x 1/8 in. Male NPT | 1/4″ Tube fitting | 1/8″ Male NPT | SWA_SS-400-1-2 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 3/8 in. Tube OD x 1/8 in. Male NPT | 3/8″ Tube fitting | 1/8″ Male NPT | SWA_SS-600-1-2 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/2 in. Tube OD x 1/8 in. Male NPT | 1/2″ Tube fitting | 1/8″ Male NPT | SWA_SS-810-1-2 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 3 mm Tube OD x 1/8 in. Male NPT | 3 mm Tube fitting | 1/8″ Male NPT | SWA_SS-3M0-1-2 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 4 mm Tube OD x 1/8 in. Male NPT | 4 mm Tube fitting | 1/8″ Male NPT | SWA_SS-4M0-1-2 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 6 mm Tube OD x 1/8 in. Male NPT | 6 mm Tube fitting | 1/8″ Male NPT | SWA_SS-6M0-1-2 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 8 mm Tube OD x 1/8 in. Male NPT | 8 mm Tube fitting | 1/8″ Male NPT | SWA_SS-8M0-1-2 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 12 mm Tube OD x 1/8 in. Male NPT | 12 mm Tube fitting | 1/8″ Male NPT | SWA_SS-12M0-1-2 | |
1/4″ NPT
| Description | Connection 1 size | Connection 2 size | Part Number | |
|---|---|---|---|---|
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/8 in. Tube OD x 1/4 in. Male NPT | 1/8″ Tube fitting | 1/4″ Male NPT | SWA_SS-200-1-4 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/4 in. Tube OD x 1/4 in. Male NPT | 1/4″ Tube fitting | 1/4″ Male NPT | SWA_SS-400-1-4 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 3/8 in. Tube OD x 1/4 in. Male NPT | 3/8″ Tube fitting | 1/4″ Male NPT | SWA_SS-600-1-4 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/2 in. Tube OD x 1/4 in. Male NPT | 1/2″ Tube fitting | 1/4″ Male NPT | SWA_SS-810-1-4 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 3 mm Tube OD x 1/4 in. Male NPT | 3 mm Tube fitting | 1/4″ Male NPT | SWA_SS-3M0-1-4 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 4 mm Tube OD x 1/4 in. Male NPT | 4 mm Tube fitting | 1/4″ Male NPT | SWA_SS-4M0-1-4 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 6 mm Tube OD x 1/4 in. Male NPT | 6 mm Tube fitting | 1/4″ Male NPT | SWA_SS-6M0-1-4 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 8 mm Tube OD x 1/4 in. Male NPT | 8 mm Tube fitting | 1/4″ Male NPT | SWA_SS-8M0-1-4 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 12 mm Tube OD x 1/4 in. Male NPT | 12 mm Tube fitting | 1/4″ Male NPT | SWA_SS-12M0-1-4 | |
1/2″ NPT
| Description | Connection 1 size | Connection 2 size | Part Number | |
|---|---|---|---|---|
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/8 in. Tube OD x 1/2 in. Male NPT | 1/8″ Tube fitting | 1/2″ Male NPT | SWA_SS-200-1-8 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/4 in. Tube OD x 1/2 in. Male NPT | 1/4″ Tube fitting | 1/2″ Male NPT | SWA_SS-400-1-8 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 3/8 in. Tube OD x 1/2 in. Male NPT | 3/8″ Tube fitting | 1/2″ Male NPT | SWA_SS-600-1-8 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/2 in. Tube OD x 1/2 in. Male NPT | 1/2″ Tube fitting | 1/2″ Male NPT | SWA_SS-810-1-8 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 3/4 in. Tube OD x 1/2 in. Male NPT | 3/4″ Tube fitting | 1/2″ Male NPT | SWA_SS-1210-1-8 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 6 mm Tube OD x 1/2 in. Male NPT | 6 mm Tube fitting | 1/2″ Male NPT | SWA_SS-6M0-1-8 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 8 mm Tube OD x 1/2 in. Male NPT | 8 mm Tube fitting | 1/2″ Male NPT | SWA_SS-8M0-1-8 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 12 mm Tube OD x 1/2 in. Male NPT | 12 mm Tube fitting | 1/2″ Male NPT | SWA_SS-12M0-1-8 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 16 mm Tube OD x 1/2 in. Male NPT | 16 mm Tube fitting | 1/2″ Male NPT | SWA_SS-16M0-1-8 | |
3/4″ NPT
| Description | Connection 1 size | Connection 2 size | Part Number | |
|---|---|---|---|---|
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/4 in. Tube OD x 3/4 in. Male NPT | 1/4″ Tube fitting | 3/4″ Male NPT | SWA_SS-400-1-12 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 3/8 in. Tube OD x 3/4 in. Male NPT | 3/8″ Tube fitting | 3/4″ Male NPT | SWA_SS-600-1-12 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 1/2 in. Tube OD x 3/4 in. Male NPT | 1/2″ Tube fitting | 3/4″ Male NPT | SWA_SS-810-1-12 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 3/4 in. Tube OD x 3/4 in. Male NPT | 3/4″ Tube fitting | 3/4″ Male NPT | SWA_SS-1210-1-12 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 12 mm Tube OD x 3/4 in. Male NPT | 12 mm Tube fitting | 3/4″ Male NPT | SWA_SS-12M0-1-12 | |
| Stainless Steel Swagelok Tube Fitting, Male Connector, 16 mm Tube OD x 3/4 in. Male NPT | 16 mm Tube fitting | 3/4″ Male NPT | SWA_SS-16M0-1-12 | |