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The Dwyer 7116B Spirahelic

Pressure Indicating Transmitter

simultaneously provides local indication on a large, easily read ana-

log scale while also converting that pressure into a standard two

wire, 4-20 mA signal for ranges from 0-60 to 0-600 psi. Positive

compatible gas pressure is measured to the accuracy of ±0.5% of

full scale. The gage employs a unique triple helix Bourdon tube for

precision measurement of compatible gases and liquids. The direct

drive design reduces friction and mass, resulting in exceptionally

good responsiveness, repeatability and accuracy. Because there are

no gears, springs linkages or other complicated mechanisms, wear

is practically eliminated. The electrical signal and conditioning is pro-

duced by a piezoresistive pressure cell. A 316 stainless steel con-

nection block features convenient dual

˝ female NPT and

˝ male

NPT pressure connection. Pressure block also includes integral filter

plug to keep dirt out. Safety is assured with solid front case design

and rear blowout hole.

INSTALLATION

1. Select a location free from excessive vibration where the tem-

perature limits of 20 to 120°F (-6.7 to 49°C) will not be exceed-

ed. Mounting surface should be vertical to match the position in

which all standard gages are calibrated. Avoid locations in

direct sunlight which may cause accelerated discoloration of

the clear acrylic lens or where exposure to oil mist or other air-

borne vapors could likewise result in lens damage. Make sure

that the case relief area on the rear is not obstructed. This hole

is designed to direct pressure rear-ward in the event of a failure

of the Bourdon tube element. See complete safety recommen-

dations at the end of this bulletin.

2. See Fig. A for mounting hole instructions.

SPECIFICATIONS

GAGE SPECIFICATIONS

Service: Compatible gases & liquids.

Wetted Materials: Inconel

X-750 Bourdon Tube, Type 316L SS

connection.

Housing: Black polycarbonate case and clear acrylic cover.

Accuracy: Grade 2A (0.5% F.S.).

Stability: ± 1% F.S./year.

Pressure Limit: 150% of full scale. Gage will maintain its specifi-

cations for overpressures up to 150% maximum range. Normal

operation should be between 25% and 75% of full scale.

Temperature Limits: 20 to 120°F (-6.67 to 48.9°C).

Size: 4-1/2˝ (114.3 mm) dial face. Design conforms to ASME

B40.1.

Process Connections: Dual size 1/4˝ male NPT / 1/4˝ female

NPT, bottom connection.

Weight: 29.5 oz (836.3 g).

TRANSMITTER SPECIFICATIONS

Accuracy: 0.5% F.S.

Temperature Limits: 20 to 120°F (-6.67 to 48.9°C).

Thermal Effect: ± 0.025% F.S./°F (0.045% F.S./°C).

Power Requirements: 10-35 VDC (2 wire).

Output Signal: 4-20 mA DC.

Zero & Span Adjustments: Externally accessible potentiometers.

Loop Resistance: DC, 0-1250 ohms.

Current Consumption: DC, 38 mA max.

Electrical Connections: Screw Terminals.

Mounting Orientation: Vertical.

Agency Approvals: CE.

Series 7116B Spirahelic

Pressure Indicating Transmitter

Specifications - Installation and Operating Instructions

Bulletin E-105

(3) ø[5.57] MOUNTING

HOLES EQUALLY SPACED ON A

3-3/8 [85.73] BOLT CIRCLE

DUAL PRESSURE

CONNECTION

1/2 MALE NPT

1/4 FEMALE NPT

120°

ø5-7/8

[149.23]

3-7/64

[78.98]

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com

Fig. A

ZERO ADJUST

TERMINAL BLOCK

SPAN ADJUS

E-105 9/11/03 8:13 AM Page 1

1 2 3 4

Inhaltsverzeichnis

Seite 1 - DWYER INSTRUMENTS, INC

The Dwyer 7116B Spirahelic®Pressure Indicating Transmittersimultaneously provides local indication on a large, easily read ana-log scale while also co

Seite 2 - Pneumatic Calibration Test

3. A 1/4˝ female NPT 1/2˝ male NPT pressure connection is fur-nished to allow you the choice of vertical (from below thegage) or horizontal piping. T

Seite 3 - MAINTENANCE

Pressure RangingEach standard Series 7116B Spirahelic®Pressure IndicatingTransmitter is factory calibrated to produce 4 mA at zero scalereading and 20

Seite 4

The following material is excerpted from a standard titledGauges-Pressure Indicating Dial Type-Elastic Element(AN-SI/ASME B40.1-1985) as published by

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Dwyer Instruments TIC-20 Spezifikationen

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