The Ashcroft® 1305D and 1305DH portable deadweight testers are primary pressure standards that include a pressure source for generating precise calibration points. The unit’s built-in shuttle valve provides the means to control the rate of pressure increase, while precision adjustment is accomplished with an integral micro vernier displacement valve. An ideal, rugged field-ready primary standard, the 1305s are certified to yield consistent and accurate results.
Industrial Market:
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
Reservoir Volume
Approximately 1.5 pints (0.7 liter)
Pump Body Materials
Aluminum alloy
Piston & Cylinder Materials
Stainless Steel
Operating Fluid
1305D – SAE 20 automotive or machine oil
1305DH – Phosphate or glycol base hydraulic fluids
Monsanto Skydrol 500B-4 or equal Note: Not for use with water medium. For oxygen service applications, refer to models 1327DO or 1327CMO
Weight Material
ASTM AC41A
Non-magnetic die cast zinc alloy
O-Ring Seals
Standard (1305D) – Buna-N
Optional (1305DH) – Ethylene Propylene
