Description Specifications Literature Description Ashcroft ® Type 103D deadweight testers provide an easy means of precisely generating pressure to an accuracy of 0.1% of reading. Ashcroft® 1305D units are available for operating ranges up to 10,000 psi. They are ideal for use in calibrating, setting, testing and repairing pressure measurement and control devices. Each 1305D unit is traceable to the National Institute of Standards and Technology, assuring instrument accuracy.These pressure systems are designed to be field portable. A single carrying case holds the pressure generation pump as well as all the necessary tools and accessories. A second box contains the weights used for pressure generation (10,000 psi units require two boxes of weights). Ashcroft ® deadweight testers qualify as primary standards for pressure calibration.The pump is a two-stage hydraulic pressure generator. A built-in shuttle valve allows for rapid pressure increase at low pressures. The rate of increase per pump cycle can be reduced at higher pressures to minimize resistance. This is accomplished by simply repositioning the two-position shuttle valve. With the shuttle valve in the high-pressure position, increasing pressure even when near the 10,000 psi upper limit can be accomplished quickly and easily. Final, precise adjustment is accomplished through the use of an intergral vernier-adjustment knob.The 1305D is provided with two-piston cylinder assemblies. A low-pressure piston for pressure ranges from 15 to 2,000 psi and a high-pressure unit for pressure from 75 to 10,000 psi. The high-pressure piston has an area of 1/80th of a square inch while the low pressure piston has an area of 1/16th of an square inch. Weights are provided for pressure increments of 5, 10, 20, 25, 40, 50, 100, 200 and 500 psi (depending on piston in use). Ashcroft® 1305D testers can be used anywhere within their operational range without any change in accuracy. The same weights are used with both piston and cylinder assemblies.Ashcroft® 1305 units are available for psi ranges. Each unit comes complete with a hand jack set (for removal of pointers on gauges being calibrated), spare O-rings and all tools, accessories and fittings required for normal use. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Accuracy:Within 0.1% of produced pressure (adjusted for standard gravity conditions; compensation for local gravity effects may be required)Operating Pressure:15 psi to 10,000 psi maximumResevoir Volume:Approximately 1.5 pints (0.7 liter)Pump Body Material:Aluminum alloyPiston Material:440C Stainless SteelCylinder Material:416 Stainless SteelOperating Fluid:1305D-SAE 20 automotive or machine oil; 1305DH-Phosphate-based or glycol fluidsO-Ring Seals:Buna-N (Standard) Ethylene Propylene (Optional) Literature & Docs Accessories