TSI Low Flow Flowmeter - 20 L/min (Air / O2 / N2) 1/4"
The TSI Flowmeter model 4140 is a low-flow unit with a flow measurement range of 0.01-20 std l/min. This particular version has a 0.25” (6.4mm) inlet diameter and is suitable for gas calibrations including Air, O2 and N2.
The LCD screen on the flowmeter is digital and will show the flow rate, volume, pressure and temperature. The TSI flowmeters are all highly accurate and will provide results to ±2% of a reading. They have multiple data output options and have a platinum film sensor design which contributes to the accuracy.
For more information please refer to the datasheet.
- 4 millisecond flow response
- Turn-down ratios greater than 1000:1
- Low pressure drop taken into consideration
- LCD display shows L/min, Std L/min, cm3/min, Std cm3/min
- Temperature and pressure compensation is built-in
Dimensions |
5” x 2” x 1.25” (127mm x 49mm x 32mm) |
Measurement range |
0-0.01 std l/m |
Accuracies |
Air & O2 - ±2% of reading or 0.005 Std L/min, whichever is greater N2 - ±3% of reading or 0.010 Std L/min, whichever is greater Air & O2 Mixture – n/a N2O – n/a |
Response |
4 ms to 63% of full scale flow |
Volume* Measurement
|
Range - 0.01 – 99.9 liters Accuracy - ±2% of reading (see Operator’s Manual for additional details) |
Pressure Measurement |
Range - 50-199 kPa absolute Accuracy - ±1 kPa Response - <4 ms to 63% of final value for step charge |
Temperature Measurement |
Range - 0-50°C Accuracy - ±1°C at flow greater than 1 Std L/min Response - <75 ms to 63% of final value for step change |
Ouputs |
Analog - 0-10 VDC flow only, zero and span adjustable via RS232 Digital - RS232 |
DC Power Input |
7.5 VDC ±1.5 V, 300 mA max |
Includes |
Power supply, computer cable (mini-DIN to 9-Pin D-Sub), analog cable (mini-Din to tinned-wire), RS232 serial command set manual, operator’s manual, calibration certificate, inlet filter |