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Enabling better global research outcomes in soil, plant & environmental monitoring.

0-1 BAR PRECISION MANIFOLD

Vacuum Manifolds for use with any the 1000, 1500F1 and 1600 Extractors. Allows low tension work with a high degree of pressure stability and accuracy, unattainable with pressure regulators. Vacuum pump sold separately.

Weight: 5.45 kg

The 0700G5 Pressure regulating system is designed for regulating and monitoring the pressure supplied to pressure extractors for low tension work. It combines control valves, tubing and connectors, and a precision pressure test gauge. Mounted by standoffs to a 19 mm thick baseboard suitable for mounting on a laboratory wall. Precise low-pressure pressure control manifold designed for use with the 1600, 5 Bar Pressure Plate Extractor Or 1500F1, 15 Bar Plate Extractor. Output vacuum can be regulated from 0 to 15 psi (0 to 1 bar). Readout pressure gauge is graduated from 0 to 15 psi (0 to 1 bar) in 0.1 psi and 0.005 bar intervals.

Weight: 12.40 lbs. (5.45 kg) Dimensions: 25 x 17 x 13 inches

Zero setting of the dial gauge:

Before using the vacuum manifold it is important to check if the dial gauge is set to zero at atmospheric conditions. To guarantee the accuracy, you have to adjust for parallax. This means that both the needle and the image of the needle in the mirror must be lined up at zero at atmospheric pressure (No vacuum applied). In the event that the needle needs to be reset to zero, you have to remove the glass cover by turning it counter clockwise and lift it off. On the needle there is a small screw. Use a screw driver and adjust slowly in either direction (clockwise or counterclockwise whatever is required). After resetting, replace the glass cover again.
Note: when taking a reading from the gauge, at any number, also look at the mirror image. The needle and the mirror image must be parallel. (this to adjust for parallax)

Use of the tempe cell and the vacuum manifold:

1. Connect the tempe cell (1 up to 12 pcs) to a water trap.
2. Connect the water trap with the neoprene tubing to the desiccator. The desiccator must be filled with desiccant (e.g. silica gel) to dry the air before it is going into the manifold.
3. Connect the outgoing tube from the desiccator to the manifold, depending on the vacuum range you require. You can connect to A if the range is required to get close to atmosphere. Use the coarse adjustment knob for the regulation. You can connect to B for the higher vacuum range which can now be fine tuned with the fine tuning adjustment knob.
4. If connected to A, the fine tune knob must be completely opened.
5. If connected to B, the coarse adjustment knob must be completely opened.

Connect the manifold to a vacuum pump. We recommend a dedicated vacuum pump. (Preferably not a company shared vacuum system) A example of a good displacement pump is e.g. Welch, dual seal vacuum pump model 1400 or equivalent.

Principle of operation:

A displacement vacuum pump draws air at a constant rate. By bleeding against this constant rate, it is possible to establish a stable vacuum relative to atmospheric pressure. To optimise this set up, the system needs to be FREE OF LEAKS with the exception of the bleeding knob (A or B). For the most part it is a dead end system beyond the manifold.