Humboldt H-3630A Water Retention Apparatus - Manual (Page 2)

Introduction
This apparatus consists of eight main components:
1. A perforated brass dish
2. A brass funnel
3. A glass stopcock
4. A glass flask
5. A vacuum dial gauge
6. A vacuum regulator
7. An aspirator pump
8. A wood stand
9. Filter paper, medium speed
Note: The use of Mercury fluid is no longer necessary with this instrument,
since the dial gauge and regulator replace the manometer and relief column
of the previous models.
Specifications
Dial Gauge
Accuracy: +/-1.5% of Span, mid half
Range: 0 -70 mm Hg Vac
Case Size: 2.5"
Vacuum Safety: 120% of Span
Vacuum Regulator
Range: Regulates 0 to 20" Hg
Flow Condition: up to 70 Liters per minute
Wetted Metal Parts: Copper Alloy; Brass
The H-3630A meets specifications for the following tests:
ASTM C91, ASTM C207, ASTM C110, ASTM E149
To verify operation a known testing cement, e.g., Portland S with silica sand
should be used to compare the unit to established readings.
Unpacking
Your unit was thoroughly inspected before it was shipped and should be ready to
operate as soon as you have completed the set-up procedure. Notify Humboldt Mfg.
Co. or your local agent and file a claim with any carriers involved if you find any damage
to the apparatus.
Setup
Place the stand on a stable surface in close proximity to the vacuum source which can
be the water connected aspirator pump or a mechanical vacuum pump. Attach a
vacuum hose (user supplied) between the pump and the water retention apparatus
regulator the hose should be capable of withstanding the full vacuum to be applied
by the pump.
Orient the gauge and regulator to your preferred viewing angle by loosening the
rubber-lined, tube clamp located between the gauge and regulator. Rotate the
flow line(s), to accommodate, then retighten.