05.
METER NUMBER: DATE TESTED: PREDETERMINED INITIAL PRESSURE LINE: 1
Humboldt Pressure Meter— H-2783 Easy-to-use stainless clamping system employs four, one-piece, self-locking clamps to seal lid to base with proper tension. O-ring assures watertight seal. Easy-to-read (to nearest 1/10th %) 4-inch diameter direct percentage gauge with calibration adjustments. Features all-brass H-2785.DB super pump for reliability and faster operation. Unique pop-it valve eliminates seal failures.
Operation Instructions 1. Fill the base with a sample of fresh concrete according to ASTM C231 specifications. Next, strike off the base level full with the strike off bar that is furnished with the instrument. Wipe top of base and cover clean. 2. Clamp cover on securely, with petcocks open. 3. Using the supplied syringe, inject water through one petcock until all the air is displaced and expelled through the opposite petcock. Leave petcocks open at the time. 4.
. Close both petcocks and immediately press down on the thumb lever exhausting air into the base. Wait a few seconds until the hand is stabilized. If all of the air was eliminated and the initial pressure line was correctly selected, the gauge should read zero. If two or more tests show a consistent variation from +/- 0.1% in the result, then change the initial pressure line to compensate for the variation. Use the newly established initial pressure line for subsequent tests. 6.
5 H-2783.2 H-2783.3 H-2785.4 H-2783.5 H-2783.6 H-2785.7 H-2783.6A H-2785.11 H-2785.12 H-2785.13 H-2785.14 H-2785.15 H-2783.17 H-2785.18A H-2785.18B H-2783.19 H-2783.20 H-2783.21 H-2783.24 H-2785.29 H-2785.41 H-2785.51 H-2785.53 H-2783.26 H-2783.27 H-2783.28 H-2783.29 H-2785.DB H-2785.
6 H-2785.DB1 H-2785.DB2 H-2785.DB3 H-2785.DB4 H-2785.DB5 H-2785.DB6 H-2785.DB7 H-2785.DB9 H-2785.DB10 H-2785.DB12 H-2785.51 H-2785.53 Valve nut Valve Valve O-ring Pump tube Pump cap Stem nut Pump piston Pump stem Pump handle Stem cap Pump piston O-ring Pump tube O-ring H-2785.DB1 H-2785.DB2 H-2785.DB4 H-2785.DB3 H-2785.DB6 H-2785.DB7 H-2785.53 H-2785.DB9 H-2785.51 H-2785DB Super Pump Replacement Parts H-2785.DB10 H-2785.DB12 H-2785.
Warranty Humboldt Mfg. Co. warrants its products to be free from defects in material or workmanship. The exclusive remedy for this warranty is Humboldt Mfg. Co., factory replacement of any part or parts of such product, for the warranty of this product please refer to Humboldt Mfg. Co. catalog on Terms and Conditions of Sale. The purchaser is responsible for the transportation charges. Humboldt Mfg. Co.