Description
HAWK 66L and 66B series capsule system pressure gauges are designed to measure low pressure from 0.5 inH2O to 15 PSI. These use a diaphragm capsule as its sensing element. The sensing element consists two half capsules which are soldered together. The diaphragm capsule element expands by subjecting to pressure. The expansion is converted into the rotary motion of the pointer by a movement. This motion makes users read the scale easily. The wetted parts can be in beryllium copper, brass or 316 stainless steel. All stainless steel low pressure gauge are ideal for use in corrosive and aggressive gas. The phenolic case is excellent in withstanding rugged environment.
Typical Applications
- Process control and chemical industry
- Medical and pharmaceutical industry
- Burner and gas combustion service
- Everywhere low pressure and vacuum measurement is required
- Waste water treatment
- Heating Ventilating
- Air conditioning filtration
Specifications
Operating
Steady: 100%*full scale value
Sudden: 130%*full scale value
All HAWK capsule low pressure gauge are with over-range protection up to 1.3 times of full scale value. Special design for high over-pressure (5 times) protection on request. HAWK Supplies a wide selection of range from 6 inH2O to 15 PSI including vacuum and compound range.
Temperature limit
Ambient: -20 to 60°C
Media: max 60°C-Copper, 100°C-SS.
Temperature effect
Accuracy of measurement will be affected by the temperature change. This inaccuracy may as high as ±0.3% for 10°C temperature change.
Size
4 1/2″ (115mm).
Case&Ring
Phenol, bezel ring threaded with a gasket.
Socket
Brass or 316 Stainless Steel.
Movement
Stainless steel or Brass movement with overload and underload stops – Standard.
Capsule Element
Beryllium Copper or Bronze, 316 Stainless Steel.
Window
Temperature safety glass – Standard.
Polycarbonate or Laminated safety glass – Optional.
Several Kinds of Window
Pointer
Anodized aluminum with black finish.
Accuracy
±2-1-2% of span (1% – Option).
±3-2-3% of span (2-1-2% – Option), for the range under 10mbar.
Zero-Adjustment
Micro-adjustable screw on dial.
Scale
PSI, kPa, mmH2O, mbar, inH2O, oz./in2 (single or dual scale).
Connection
1/2″, 3/8″, 1/4″NPT standard, JIS, DIN and M20*1.5 available.
Mounting
Stem, Surface, Flushing mounting.
Weatherproof
NEMA 3/3X(IP54) enclosure
NEMA 4/4X(IP65) – Option.
