MFC Control Box for High Volume Air Sampler
Model MFC-CTB is the control box for a mass flow controlled high volume air sampler. It contains a 4000 W SCR power adjuster, a 7 day 24 hour programmable timer, a main switch and two connecting wires, so a station can be started and stopped on a weekly schedule without an operator present. The enclosure is 160x160x120 mm, a depth that gives the MFC electronics room; the VFC version of the same box is 90 mm deep.
| Model Number: | MFC-CTB |
| Product name: | MFC control box |
| Contents: | 4000 W SCR power adjuster, 7 day 24 hour programmable timer, main switch, two connecting wires |
| Measure: | 160x160x120 mm |
| Weight: | 0.85 kgs |
| Packing meas.: | 20x20x18cm |
| ERP NO.: | 98005-000-409 |
| Shipment: | from stock |
| Warranty: | 1 year |
What the MFC Control Box Does
The control box governs the blower motor of a mass flow controlled high volume air sampler. The SCR power adjuster varies the motor voltage and therefore the sampling flow, while the 7 day 24 hour programmable timer switches the sampler on and off according to a weekly schedule. A main switch isolates the unit for servicing, and two connecting wires link the box to the motor. Together these parts let a station run a repeatable sampling programme without an operator present.
Setting and Holding the Sampling Flow
Sampling flow is adjusted with the SCR power adjuster, which changes the voltage applied to the blower motor. The operator sets the flow against a manometer or flow indicator at commissioning and rechecks it at each visit, trimming the power setting if the flow has moved. The MFC electronics hold the mass flow reference; the power adjuster is how the operator brings the motor to that reference.
Programming the Weekly Sampling Schedule
The 7 day 24 hour timer allows different start and stop times on each day of the week, so a programme can run 24 hour samples daily, on weekdays only or on a chosen set of days. Sampling times are normally set to match the method and the reporting requirement, for example a midnight to midnight schedule. Because the timer and the power adjuster sit in the same enclosure, the whole sampling schedule is set in one place.
MFC or VFC Box, Packing and Warranty
The MFC-CTB measures 160x160x120 mm, the depth required for the MFC electronics, while the VFC version of the box is 90 mm deep. Order the box that matches your flow control system so the components fit the enclosure properly. The control box weighs 0.85 kgs, ships from stock under ERP number 98005-000-409 in a 20x20x18cm carton and carries a one-year warranty.
Sets the Flow and Keeps It on Schedule
The SCR power adjuster sets the motor voltage, and therefore the sampling flow, while the programmable timer starts and stops the run automatically on a 7 day 24 hour cycle. A station can therefore collect a sample every day or only on selected days with nobody on site, which is how most ambient monitoring networks operate.
Complete Control in One Enclosure
The box contains the power adjuster, the timer, the main switch and two connecting wires, so the electrics of the sampler are gathered into a single unit. Installation means mounting the box, wiring the motor and setting the schedule, with no separate timer or regulator to fit alongside it.
Depth Sized for the MFC Electronics
At 160x160x120 mm, the enclosure gives the MFC electronics the room they need, whereas the VFC version of the same box is 90 mm deep. Buyers specifying a mass flow controlled sampler should therefore order the MFC-CTB so that the controller and its connections sit properly inside the box.
Light, Compact and Easy to Mount
The box weighs 0.85 kgs and measures 160x160x120 mm, so it mounts on the sampler frame or inside the shelter without adding meaningful load. The main switch gives the operator a single point for isolating the sampler during maintenance, which simplifies site visits and safe servicing of the motor.
From Stock with a One-Year Warranty
The MFC control box ships from stock under ERP number 98005-000-409 in a 20x20x18cm carton and carries a one-year warranty. T4 AIR SAMPLER supplies it alongside blower motors, motor housings and flow controllers, so a service team can order everything needed for a station repair in one shipment.
Related Categories
High Volume Air Sampler | Air Sampler Parts
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