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Series
475-FM
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Mark
III Handheld Digital Manometer
Ranges from 1 in. w.c. to 150 psid, ±0.5% Accuracy.
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- New
LOW Range Option 0-1.00 in. w.c.
- Measures
Positive, Negative and Differential Pressures
- Rugged,
Extruded Aluminum Case
- Lightweight,
Fast and Easy to Use
- Dual
Calibration with English and Metric Units
Applications
The Dwyer Series 475 Mark III Handheld Digital Manometer is ideal
for field calibration, monitoring or trouble shooting HVAC systems,
clean rooms or a wide range of other low pressure pneumatic systems.
This handy instrument measures positive, negative or differential
pressures of air and natural gases in ranges from 1 in. w.c. (0.249
kPa) to 150 psd (10.34 bar). The Series 475-FM Approved is intrinsically
safe for hazardous locations, Class 1, Div.1, Group A, B,C, D,
T4. Its simple operation and easy to read digital display make
it an indispensable test instrument for the plant engineer, industrial
hygienist and HVAC technician. When used with a Dwyer Pitot tube
(see Air Velocity), the Series 475 Mark III can also be used as
an air velocity gage. See the complete 475-1-FM-AV kit described
below.
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The
Series 475 Mark III is housed in a durable extruded aluminum case
with its solid state circuitry mounted on a tough fiberglass epoxy
circuit board. A standard 9 volt battery provides up to 100 hours
of operation. Dual push pads on the front panel control on-off
operation and English or metric pressure unit selection. No set-up
or leveling. Zero adjust knob is conveniently located on top.
The large ½" LCD display is easy to read, minimizing data collection
errors. Units include a "low battery" indicator. The pressure
sensor used is a highly stable silicon peizoresistive device.
The standard connections are dual sized for 1/8"
or 3/16" I.D. vinyl or rubber tubing. Complete
instructions are conveniently printed on rear of housing.
STOCKED MODELS in bold
| Model
Number |
English
Range |
Metric
Range |
Maximum
Pressure |
| 475-000-FM |
0-1.00
in. w.c. |
0-.249
kPa |
10
in. w.c./2.5 kPa |
| 475-00-FM |
0-4.00
in. w.c. |
0-.995
kPa |
10
in. w.c./2.5 kPa |
| 475-0-FM |
0-10.00
in. w.c. |
0-2.49
kPa |
0-5
psig./34.5 kPa |
| 475-1-FM |
0-19.99
in. w.c. |
0-4.97
kPa |
11
psig/75 kPa |
| 475-2-FM |
0-40.0
in. w.c. |
0-9.95
kPa |
11
psig/75 kPa |
| 475-3-FM |
0-199.9
in. w.c. |
0-49.7
kPa |
11
psig/75 kPa |
| 475-4-FM |
0-10.00
psid |
0-.689
bar |
58
psig/4 bar |
| 475-5-FM |
0-19.99
psid |
0-1.378
bar |
58
psig/4 bar |
| 475-6-FM |
0-30.0
psid |
0-2.07
bar |
58
psig/4 bar |
| 475-7-FM |
0-100
psid |
0-6.89
bar |
150
psig/10 bar |
| 475-8-FM |
150
psid |
0-10.34
bar |
150
psig/10 bar |
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PHYSICAL
DATA
Accuracy: ±0.5% F.S., 60-78°F (15-25°C); 1.5% F.S from
32-60°F and 78-104°F (0-15°C and 25-40°C),
Pressure Hysteresis: ±0.1% of full scale.
Temperature Effect, Zero Reading: 0.5% of full scale, 32-122°F
(0-50°C).
Operating Temperature Range: 32-122°F (0-50°C).
Maximum Pressure: See Chart.
Power Source: 9 volt alkaline, included but not connected.
Pressure Connections: Two barbed connections for use with
1/8" or 3/16" I.D. tubing. Two compression
fittings for use with 1/8" I.D. X 3/16"
O.D. tubing for 475-7 & 475-8 only.
Battery Life: Typically 100 hours.
Display: 0.5" liquid crystal.
Size: 6 9/16"H x 2 13/16"W
x 29/32"D (166 x 71 x 23 cm).
Weight, Battery included: 12 ounces (340 grams)
Caution: FM approved model suitable for use with air and
natural gas.
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A-402-A
CARRYING CASE
Tough gray nylon pouch protects any Series 475 Manometer. Double
zippered for quick and easy access. With belt loop that snaps
closed.
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475-AV AIR VELOCITY KIT - Includes your choice of Series
475-FM Monometer, two A-303 static pressure tips, two 9 ft. lengths
3/16" I.D. rubber tubing, no. 166-6-CF Pitot tube,
A-397 step drill, A-532 air velocity slide chart and instruction
bulletin H-11, all packed in a tough, molded plstic carrying case
with die cut foam liner. To order, add AV suffix to any standard
475 model no. |
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