Atec King-Nutronics-3112 User Manual download pdf

KNC Model 3112 Portable Live Pressure Calibration and Test System

Product Description

The Model 3112 Portable Live Pressure Calibration and Test System is a compact, completely self-contained

unit designed for calibrating and testing pressure gauges, transducers, pressure switches, and other

pressure-sensitive instruments up to 2,000 psi with an accuracy of ±0.5% of full scale. Two large, legible

gauges, reading from 0 to 100 psig and 0 to 2,000 psig respectively, and controlled by an automatic transfer

valve, permit precise stepless measurements over the entire range of the system. Other pressure ranges and

units of measure (e.g., kPa) are available upon request. For details, please see the Ordering Information

section below.

An internal nitrogen cylinder with a capacity of 90 cubic inches (7.1 std. cubic feet when charged at 2,250 psi

at 70°F), permits the Model 3112 Portable Live Pressure Calibration and Test System to be easily transported

to remote locations—no external gas or power sources are required. The cylinder can be charged using any

available high pressure nitrogen source, and is wire-wound for protection against impact. Additional safety

features include “blow-out back” master gauges to protect the operator from glass breakage in the event of a

malfunction, burst discs to guard against inadvertent overpressurization, and a relief valve designed to protect

the test item and master gauges from damage.

During setup, the Model 3112 Portable Live Pressure Calibration and Test System is first connected to the

item to be calibrated using a 5-foot-long braided test hose. The hose is terminated at both ends with 1/4"

female swivel AN fittings and doubles as a charging hose for the nitrogen cylinder.

To test an item, gas from the nitrogen cylinder is metered into the test circuit via a precision soft seat control

valve (see diagram below), and applies pressure simultaneously to the item undergoing calibration and the

master reference gauges. This enables the operator to easily perform comparative readings.

As the pressure is increased during testing, readings are transferred automatically from the low range (0 to

100 psig) gauge to the high range (0 to 2,000 psig) gauge. A second control valve is used for venting,

allowing precise downscale measurements to be performed. As the test pressure drops, the transfer valve

automatically switches from the high range gauge to the low range gauge.

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KNC Model 3112 Portable Live Pressure Calibration and Test System Product Description The Model 3112 Portable Live Pressure Calibration and Tes

A 65 to 250 VAC electrical tester is built into the Model 3112 Portable Live Pressure Calibration and Test System for convenient pneumatic switch

Specifications Characteristics Specifications Carrying case: Metal gauge Weatherproofing Material Instrument protection 0.050 inch Rubber s

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Atec King-Nutronics-3112 User Manual