1800 SERIES LARGE DIAPHRAGM

DIFFERENTIAL PRESSURE

Gauges ∙ Switches ∙ Transmitters

● Most sensitive differential pressure design

● Very low range for high line pressures

Model

Differential

pressure

range

Maximum

line

pressure/

temperature

Accuracy

(F.S.)

Electrical

Available

Additional

Information

1831DG/DGS/DS

DG (Diaphragm Gauge)

DGS (Diaphragm Gauge-Sw)

DS (Diaphragm Switch)

0-5" H2O to 0-8 psid

(0-125 mm H2O to

(0-0.5 bar)

Aluminum body:

100 psig (7 bar)/

200F (93C)

Stainless steel body:

150 psig (10 bar)/

200F (93C)

1 or 2 switches

No enclosure

1833DGS/DS/DG

DGS (Diaphragm Gauge-Sw)

DS (Diaphragm Switch)

DT (Diaphragm Transmitter)

DGT (Diaph, Gauge, Trans)

0-5" H2O to 0-8 psid

(0-125 mm H2O to

(0-0.5 bar)

Aluminum body:

100 psig (7 bar)/

200F (93C)

Stainless steel body:

150 psig (10 bar)/

200F (93C)

1 or 2 switches

1 or 2 relays

transmitter

Class 1 Div. 2

1835DGS/DS

DG (Diaphragm Gauge)

DGS (Diaphragm Gauge-Sw)

DS (Diaphragm Switch)

5-0-5" H2O to

8-0-8 psid

(125 mm-0-125 mm

H2O to 0.5-0-0.5 bar)

Aluminum body:

100 psig (7 bar)/

200F (93C)

Stainless steel body:

150 psig (10 bar)/

200F (93C)

1 or 2 switches

No enclosure

Dimensions:

How to specify:

Select from each of the applicable categories to construct a model number. Write down model number for future reference. Contact Orange Research or your local distributor for additional options and pricing information.

Sample Model Number: 1831DGS - 1A - 2.5L - A 0-5 in. H2O, Options

Model

Port

Body

Dial Dia.

Dial Case

Switch

Range

1831DG

1831DGS

1831DS

1833DGS

1833DS

1835DG

1835DGS

1835DS

1 = in-line

A = aluminum

C = 316 SS

2.5 = 2.5"

3.5 = 3.5"

4.5 = 4.5"

6.0 = 6.0"

B = basic

F = flanged

A = SPST, N.O.

B = SPST, N.C.

C = SPDT

A-A = 2 ea. -A

B-B = 2 ea. -B

C-C = 2 ea. -C

R2 = relay

T1 = transmitter

1831 & 1833:

0-5" H2O,

0-10", 0-15", 0-20",

0-25", 0-30", 0-40",

0-50", 0-60", 0-80",

0-100", 0-150",

0-200"; 0-8 psid

1835:

5-0-5" H20,

10-0-10", 15-0-15",

20-0-20", 25-0-25",

30-0-30", 50-0-50",

100-0-100";

5-0-5, 8-0-8 psid

Options

Write in options that apply. For options click here.

Diaphragm Sensor Differential Pressure Gauges

These diaphragm sensor differential pressure gauges measure the pressure difference between two points. Acting in the place of two pressure gauges, these units allow for one simple reading on an easy-to-read scale. Popular in filtration, flow and level applications, they are a low cost alternative to bourdon tube and bellows designs.

Our 1800 Series models are our most sensitive sensor designs. While being sensitive they also handle high line pressures up to 150 psi!

We offer them with bodies (and wetted parts) of aluminum and stainless steel. A variety of dial sizes are also available, from 2.5 inch to 6 inch, with many porting and mounting configurations. Choose from a wide selection of standard options; enough to satisfy any requirement.

Note: Select these diaphragm models for air or gas applications or where fluid migration from the high to low pressure ports cannot be tolerated.

Switches, Relays, Transmitters

A variety of reed switches and relays can accompany the gauges or be supplied on their own, without a dial. SPST switches are offered normally open (N.O.) or normally closed (N.C.). SPDT reed switches also are available. DPDT relays are offered for high inductance applications, such as those incorporating motors or solenoids. Transmitters offer a wide variety of outputs, such as voltage, current, frequency or RS 232. Click here for more information on switches, relays and transmitters.

Differential Pressure Instruments • Low DP Instruments • Flow Meters • Liquid Level Switches • Site Map

Orange Research Incorporated • 140 Cascade Boulevard • Milford CT 06460
(203) 877-5657 • FAX: (203) 783-9546 • Toll-Free: 1-800-989-5657