Measures
Positive, Negative and Differential Pressures
Rugged, Lightweight, Fast and Easy to
Use
Dual
Calibration with English and Metric Units
NEW! FM Approved
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 other non-corrosive, non-toxic gases. When
used with a Dwyer Pitot tube (see Flow and Air Velocity), the Series
475 Mark III can also be used as an air velocity gage. See the complete
475-1-AV kit described below. Its simple operation and easy to read
digital display make it an indispensable test instrument for the
plant engineer, industrial hygienist and HVAC technician.
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 - all with
no set-up or leveling. Zero adjust knob is conveniently located
on top. The large 1/2" LCD display is easy to read in even
the poorest lighting conditions, minimizing data collection errors
and it includes a "low battery" indicator. The pressure
sensor used is a silicon piezo resistive device. The monolithic
chip also has a laser trimmed resistor network to assure accurate,
stable temperature compensation. 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.
PHYSICAL DATA
Accuracy: |
|
±0.5% of full scale, 60-78°F (15-25℃). |
Pressure Hysteresis:
|
|
±0.1% of full scale. |
Temperature Effect,
Zero Reading: |
|
0/5% of full scale, 32-122°F (0-50℃). |
Operating Temperature
Range: |
|
32-122°F (0-50℃). |
Maximum Pressure:
|
|
See Chart. |
Power Source: |
|
9 volt alkaline, included. |
Pressure Connections:
|
|
Barbed for 1/8" or 3/16" I.D. tubing.
475-7-FM & 475-8-FM only; 1/8" or 3/16"
O.D. tubing. |
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). |
Material (Float/Stem):
|
|
316 stainless steel. |
Weight, Battery
included: |
|
12 ounces (340 grams) |
Stocked
Models
Model
Number |
English
Range |
Metric
Range |
Maximum
Pressure |
475-00-FM
475-0-FM
475-1-FM
475-2-FM
475-3-FM
475-4-FM
475-5-FM
475-6-FM
475-7-FM
475-8-FM
|
0-4.00 in. w.c.
0-10.00 in. w.c.
0-19.99 in. w.c.
0-40.0 in. w.c.
0-199.9 in.
w.c.
0-10.00 psid
0-19.99 psid
0-30.0 psid
0-100 psid
0-150 psid
|
0-.995 kPa
0-2.49 kPa
0-4.97
kPa
0-9.95 kPa
0-49.7 kPa
0-.689 bar
0-1.378 bar
0-2.07 bar
0-6.89 bar
0-10.34
bar
|
150 in. w.c./37 kPa
150 in. w.c./37
kPa
11 psig/75 kPa
11 psig/75 kPa
11 psig/75
kPa
58 psig/4 bar
58 psig/4 bar
58 psig/4
bar
150 psig/10 bar
150 psig/10 bar
|
475-AV
Air Velocity Kit - Includes your choice of Series 475 Manometer,
two A-303 static pressure tips, 2 ft. lengths 3/16" I.D. rubber
tubing, no. 166-6-CF Pitot air velocity slide chart and instruction
bulletin H-11, all packed in a tough, molded plastic carrying case
with die cut foam liner. To order, add AV suffix to any standard
475 model no.
A-402-A Carrying Case - Tough gray nylon pouch protects any
Series Manometer. Double zippered for quick and easy access. With
belt loop that snaps closed.
|
