Series 1230/1235 Flex-Tube® Well-Type Manometers
Dwyer® Series 1230 & 1235 Flex-Tube® Well Type Manometers are designed to meet the need for a direct reading single column instrument providing highly accurate pressure readings; positive, negative or differential. Unlike other makes, Dwyer manometers have no hidden wells or packing glands. These instruments are constructed of shatter-proof clear plastic tubing permanently bonded to well assemblies with leak-proof glued joints. Well assemblies are precisely machined from solid acrylic plastic. Over-pressure safety traps assure protection against loss of fluid. Scales are adjusted with quick-acting positive mechanism. These manometers are rated to 100 psig (6.89 bar). Not recommended for vacuum service beyond 5" Hg (68" w.c.).
(Note: Red gage fluid included with -D style manometer.)
NIST CALIBRATION available in Product Configurator.
Product Applications
- Laboratory and industrial service applications
Features
- High-accuracy pressure measurement suitable for laboratory or general industry
- Precision built assures device meets the highest standards
- No moving parts mean no calibration or nothing to wear out
- Over-pressure trap prevents liquid from being expelled from gage, preventing disruption of operation
Options
- NIST traceable calibration certificate
Product Literature
Manuals
Catalog Pages
SDS
Approvals
Model Chart
1230 SERIES MANOMETERS
1230-X-X-OPT 1230 SERIES MANOMETERS
1235-X-X-OPT 1235 SERIES MANOMETERS
1ST SYMBOL (1ST X) RANGE
8 0-8 IN WC
12 0-12 IN WC
16 0-16 IN WC
20 0-20 IN WC
24 0-24 IN WC
20CM 0-20 CM WC
30CM 0-30 CM WC
40CM 0-40 CM WC
50CM 0-50 CM WC
60CM 0-60 CM WC
2ND SYMBOL (2ND X) FLUID
W/M IN WC USING WATER/IN HG USING MERCURY
D INCHES OF WATER USING .826 SP GR RED GAGE FLUID
OPTIONS (OPT)
-A TYPE A CONNECTIONS (DEFAULT NOT REQUIRED)
TWO MOLDED NYLON TUBING CONNECTORS
RAPID SHUT OFF TYPE
TWO 3 FT LENGTHS FLEXIBLE PLASTIC TUBING
TWO 1/8 PIPE THREAD ADAPTORS
-B TYPE B CONNECTIONS
TWO MOLDED NYLON TUBING CONNECTORS
RAPID SHUT OFF TYPE
ONE 9 FT LENGTH RUBBER TUBING AND
ONE BRASS TERMINAL TUBE
-C TYPE C CONNECTIONS
TWO 1/8 PIPE THREAD OPENINGS
-D TYPE D CONNECTIONS
TWO COMPRESSION FITTINGS FOR 1/.4 OD COPPER
OR ALUMINUM TUBING
-E TYPE E CONNECTIONS
TWO 3-WAY VENT VALVES 1/8 SPT TO 1/4 METAL TUBING
-AT ALUMINUM TAG
-NIST NIST TRACEABLE CALIBRATION CERTIFICATEQuestions
- Question
- Is routine maintenance required for a Dwyer red gage fluid type manometer?
- Answer
- Yes. The zero point should be checked periodically as well as the fluid level. After a year of service, particularly with dirty air, the fluid should be replaced to assure that specific gravity changes are not affecting the accuracy of the reading.
- Question
- Will the water manometers freeze?
- Answer
- Yes, if the temperature drops below 32 degrees Fahrenheit, the fluid in the manometer will freeze. The fluid used in "W/M" style manometers is water-based with a small amount of fluorescent green fluid to enhance the meniscus. The other gage fluids have a lower freezing point, however, it is recommended that the manometers be stored above 32 degrees Fahrenheit.
| Model | Description | Availability* | Price | |
|---|---|---|---|---|
| A-101 | 1 oz dispenser bottle of red gage fluid, .826 sp. gr. | 1-3 days* |
$10.85 |
|
| A-102 | 4 oz bottle of red gage fluid, .826 sp. gr. | 1-3 days* |
$21.15 |
|
| A-103 | 1 pt bottle of red gage fluid, .826 sp. gr. | 1-3 days* |
$46.95 |
|
| A-104 | 1 qt bottle of red gage fluid, .826 sp. gr. | 1-3 days* |
$88.25 |
|
| A-126 | 1 oz dispenser bottle fluorescein green color concentrate. | 1-3 days* |
$16.50 |
|
| A-220 | Clear flexible vinyl tubing, 3/16" ID x 5/16" OD, lengths to 500'; 45 psi maximum pressure @ 73°F. | 1-3 days* |
$0.50 |
|
| A-315 | Gage connector, shutoff type, for 3/16" rubber tubing. | 1-3 days* |
$19.10 |
|
| A-339 | Adapter, brass, 1/8" NPT to 3/16" rubber and 1/8" ID plastic tubing. | 1-3 days* |
$5.55 |
