ĐỒNG HỒ ĐO ÁP SUẤT WIKA 712.25DX

Application

* Measurement and indication of two applied pressures

* For non-corrosive, non-crystallizing gaseous and liquid media

* Heating ventilation and air conditioning (HVAC)

Product Features

* Duplex indication with separate black and red pointer

* Economical and rugged design

* Scale ranges from 0...15 psi (1 bar)

* Available in 4½" (115 mm) and 6" (160 mm)

Specifications

Sizes: 4½" & 6"

Accuracy: + 2/1/2% of span (ASME B40.1 Grade A)

Ranges: Pressure from 0/15 psi (1 bar) to 0/1000 psi (70 bar)

Working Range

Steady: 3/4 of full scale value

Fluctuating: 2/3 of full scale value

Short time: 1.3 x full scale value

Operating Temperature

Ambient: -4oF to 140oF (-20oC to 60oC)

Media: max. 140oF (+60oC)

Temperature Error

Additional error when temperature changes from reference temperature of 68oF (20oC) +0.4% of span for every 18oF (10oK) rising or falling.

Weather Protection: NEMA 2 (IP 33)

Connection

Material: copper alloy

Lower mount (LM) only

2 x 1/4" NPT

Each side marked with ⊕ or ⊖

Bourdon Tube

Material: copper alloy

Movement: Copper alloy, dual

Dial: White aluminum with black lettering.

Pointer

Material: aluminum

1 black and 1 red non-adjustable pointers

Case: Black cast aluminum with built-in rear flange

Window: Instrument glass

Threaded Ring: Black aluminum

Operating Principle

The right connector (marked plus "+" operates the red pointer. The left connector (marked minus "-") operates the black pointer