Dial Size: 100 mm (4")

Case & Ring: For Stem Mounting 300 Series stainless steel, solid back case with stainless steel ring. BUNA-N multi-function plug with removable nipple for venting, pressure releief and liquid-fill access. (Fig.540L, 545L)

PANEL MOUNT UNITS (Fig. 541L, 546L) incorporate 3-hole stainless steel front mounting flange.

Window:
Shatter-resistant, sealed to case with a BUNA-N gasket (Fig.540L, 541L) and a polychloroprene gasket on Figures 545L, 546L.

Dial:
White aluminum with black markings.

Pointer:
Adjustable, black coated stainless steel (Fig. 540L, 541 L). Black aluminum (Fig. 545L, 546L).

Movement:
Stainless Steel, rotary type (Fig. 540L, 541L). Brass (Fig.545L, 546L).

Bourdon Tube :
316 stainless steel or phosphor bronze (see model selection chart).

Socket Connection:
316 stainless steel or brass (see model selection chart)

*Other connections available on request.

Restrictor:
300 Series stainless steel, threaded .018" hole (Fig. 540L, 541L). Brass, push type .015" (Fig. 545L, 546L).

Ranges:
Vacuum 30"-0 Hg VAC (Counterclockwise rotation with increasing vacuum). Compound 30" Hg VAC-0-15*, 30, 60*, 100, 150* psi. Gauge 0-15, 30, 60, 100, 160, 200, 300, 400*, 600, 800*, 1000, 1500, 2000, 3000, 6000, 10,000*, 15,000*psi

Standard metric ranges available.

*Not available on Figure 545L and 546L.

Accuracy:
+/- 1% of span (Fig. 540L, 541L)

+/- 1.6% of span (Fig. 545L, 546L)

Liquid Fill:
Glycerin is standard but silicone is available. Dry (unfilled) gauges are avilable as off-the-shelf stock through local distributors.

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