Downstream-referenced fixed span flow controller
The Model 300 maintains a constant flow rate as long as the outlet pressure remains constant. (Most users allow the gas to be released at atmospheric pressure.) While the supply pressure might fluctuate from variations in sampling pressure or from chemical reactions taking place, the flow rate remains stable.
The Model 300 will accurately maintain the set flow rate in spite of fluctuating upstream pressure - even if the fluctation is to within 7.5 psi of the outlet pressure. When the flow controller is equipped with the optional Spectrol digital dial, settings are reproducible to better than 1%. The maximum flow rate available is 1.6 L/min with ambient downstream pressure.
NOTE: With all our flow controllers, the inlet pressure must exceed the outlet pressure by 10 psi.
| Available with: | Standard control knob |
| Spectrol 3-digit dial | |
| Spectrol 4-digit dial | |
| Screwdriver adjustable operator |
Model 300 with standard control knob
| Body material | Diaphragm material | Flow rate /min |
Product No. |
|---|---|---|---|
| Aluminum | Viton | 0-200 mL | FC30AV1K |
| 0-300 mL | FC30AV2K | ||
| 0-800 mL | FC30AV3K | ||
| 0-1.6 L | FC30AV4K | ||
| Stainless steel | 0-200 mL | FC30AS1K | |
| 0-300 mL | FC30AS2K | ||
| 0-800 mL | FC30AS3K | ||
| 0-1.6 L | FC30AS4K | ||
| Stainless steel | Viton | 0-200 mL | FC30SV1K |
| 0-300 mL | FC30SV2K | ||
| 0-800 mL | FC30SV3K | ||
| 0-1.6 L | FC30SV4K | ||
| Stainless steel | 0-200 mL | FC30SS1K | |
| 0-300 mL | FC30SS2K | ||
| 0-800 mL | FC30SS3K | ||
| 0-1.6 L | FC30SS4K |
Model 300 with Spectrol 3-digit dial
| Body material | Diaphragm material | Flow rate /min |
Product No. |
|---|---|---|---|
| Aluminum | Viton | 0-200 mL | FC30AV1S3 |
| 0-300 mL | FC30AV2S3 | ||
| 0-800 mL | FC30AV3S3 | ||
| 0-1.6 L | FC30AV4S3 | ||
| Stainless steel | 0-200 mL | FC30AS1S3 | |
| 0-300 mL | FC30AS2S3 | ||
| 0-800 mL | FC30AS3S3 | ||
| 0-1.6 L | FC30AS4S3 | ||
| Stainless steel | Viton | 0-200 mL | FC30SV1S3 |
| 0-300 mL | FC30SV2S3 | ||
| 0-800 mL | FC30SV3S3 | ||
| 0-1.6 L | FC30SV4S3 | ||
| Stainless steel | 0-200 mL | FC30SS1S3 | |
| 0-300 mL | FC30SS2S3 | ||
| 0-800 mL | FC30SS3S3 | ||
| 0-1.6 L | FC30SS4S3 |
Model 300 with Spectrol 4-digit dial
| Body material | Diaphragm material | Flow rate /min |
Product No. |
|---|---|---|---|
| Aluminum | Viton | 0-200 mL | FC30AV1S4 |
| 0-300 mL | FC30AV2S4 | ||
| 0-800 mL | FC30AV3S4 | ||
| 0-1.6 L | FC30AV4S4 | ||
| Stainless steel | 0-200 mL | FC30AS1S4 | |
| 0-300 mL | FC30AS2S4 | ||
| 0-800 mL | FC30AS3S4 | ||
| 0-1.6 L | FC30AS4S4 | ||
| Stainless steel | Viton | 0-200 mL | FC30SV1S4 |
| 0-300 mL | FC30SV2S4 | ||
| 0-800 mL | FC30SV3S4 | ||
| 0-1.6 L | FC30SV4S4 | ||
| Stainless steel | 0-200 mL | FC30SS1S4 | |
| 0-300 mL | FC30SS2S4 | ||
| 0-800 mL | FC30SS3S4 | ||
| 0-1.6 L | FC30SS4S4 |
Model 300 with screwdriver adjustable operator
| Body material | Diaphragm material | Flow rate /min |
Product No. |
|---|---|---|---|
| Aluminum | Viton | 0-200 mL | FC31AV1 |