Dwyer Series 7100 Series 7100 Compound Spirahelic® Pressure Gage


Dimensional Enlargement



The Series 7100 Compound Spirahelic® Pressure Gages employ a unique triple helix Bourdon tube for precision measurement of compatible gases and liquids.  Vacuum pressure readings down to 30" Hg for ASME Grade 2A (1/2% of full scale) and 1A (1% of full scale) accuracy.  Standard and turret mount cases available.  Solid brass or 316 stainless steel connection block features convenient dual 1/4" NPT female ports.  Safety is assured with solid front case design and rear blowout hole.  ASME B40. 1 design fits existing cutouts for easy replacement.

PHYSICAL DATA

Size:   4 1/2"- Design conforms to ASME B40.1
Accuracy:   Model 7112-ASME Grade 2A (1/2% of full scale);
Model 7111-ASME Grade 1A (1% of full scale).
Pressure Connection:   ¼" NPT female, duplicated back and bottom
ASME Specifications: Conforms to ASME B.40.1.
Wetted Parts:   Inconel® X-750 Bourdon tube, 316 stainless steel connection block
Housing:   Black polycarbonate case and clear acyrlic cover.
Movement:   Direct drive of pointer
Overpressure:   150% of full scale. Normal operation should be between 25% and 75% of full scale.
Calibration: Vertical mounting standard.
Temperature Limits:   -65°F to 180°F (-54° to 82.2°C)
Weight:   1 lb., 11oz. (766 gr)

 

Model Number
 Ranges
 Case
7111-G030C
7111B-G030C
7111C-G030C
7111-G045C
7111B-G045C
7111C-G045C
7111-G060C
7111B-G060C
7111C-G060C
7111-G100C
7111B-G100C
7111C-G100C
7112-G030C
7112B-G030C
7112C-G030C
7112-G045C
7112B-G045C
7112C-G045C
7112-G060C
7112B-G060C
7112C-G060C
7112-G100C
7112B-G100C
7112C-G100C		 30"Hg - 0-30 psi
30"Hg - 0-30 psi
30"Hg - 0-30 psi
30"Hg - 0-45 psi
30"Hg - 0-45 psi
30"Hg - 0-45 psi
30"Hg - 0-60 psi
30"Hg - 0-60 psi
30"Hg - 0-60 psi
30"Hg - 0-100 psi
30"Hg - 0-100 psi
30"Hg - 0-100 psi
30"Hg - 0-30 psi
30"Hg - 0-30 psi
30"Hg - 0-30 psi
30"Hg - 0-45 psi
30"Hg - 0-45 psi
30"Hg - 0-45 psi
30"Hg - 0-60 psi
30"Hg - 0-60 psi
30"Hg - 0-60 psi
30"Hg - 0-100 psi
30"Hg - 0-100 psi
30"Hg - 0-100 psi		 Standard
Turret Bottom
Turret Back
Standard
Turret Bottom
Turret Back
Standard
Turret Bottom
Turret Back
Standard
Turret Bottom
Turret Back
Standard
Turret Bottom
Turret Back
Standard
Turret Bottom
Turret Back
Standard
Turret Bottom
Turret Back
Standard
Turret Bottom
Turret Back