Ho
Hoods
Accessories
Fume Hood Airflow Monitors
with Visual/Audible Alarm
Wide-Range Airflow
Monitors for Fume Hoods
Verify safe hood operation
Reliable, durable sensor element
Electronic monitors feature
lights that indicate normal or
alarm status; audible alarm
warns of potentially dangerous
airflow conditions. Set the
alarm at any point between
70 to 250 ft/min. Analog
output is 0 to 4 V.
Simple field calibration
Multiple alarms—audible, visual,
and relay
Monitors maintain accurate
response even when using
low-flow hood conditions.
Alarms activate based on
sustained low-flow condition.
Use pushbuttons to set alarm
and perform easy two-point
calibration. Monitors will also
indicate high sash condition
33556-50
(requires proximity switch, not
included) with configurable time
delay. Record hood performance
using RS-232 connection to computer.
n
n
Basic Model 33556-00
has a low flow set point and
audible/visual alarms. Surface
­mountable.
33556-00
Digital Model 33556-06 has
an LCD, high and low alarm
set points, and relay and analog ­
outputs. Includes flush mount to fit into
an ­electrical r­ eceptacle knockout.
What’s included: mounting hardware,
tubing, sidewall adapter, and a 115 VAC
power adapter with a 6-ft cord.
Catalog number
Description
TW-33556-00
Basic model
TW-33556-06
Digital model
Model
Range
70 to
250 ft/min
Model 33556-50 features a horn alarm with
green and red LED indicators. The graphic
display model 33556-60 comes with an
external velocity meter and shows current
velocity in fpm with bar graph depiction of
recent hood airflow performance; calibration
33556-60
instructions appear on screen. Choose
model 33556-70 for its extra wide measurement range. It includes
a remote velocity probe which can be installed in your ductwork
for use with biosafety cabinets.
33556-06
Dimensions(W x H x D)
31⁄8" x 6" x 17⁄8"
(7.9 x 15.2 x 4.8 cm)
3" x 51⁄4" x 1⁄2"
(7.6 x 13.3 x 1.3 cm)
Price
What’s included: low voltage transformer and mounting bracket
for surface mount. Call our Application Specialists if a flush mount
requiring a 2" x 3" (5.1 x 7.6 cm) opening is preferred.
Specifications
Technical Assistance?
Resolution: 1 ft/min (0.005 m/s)
Contact our expert Application
Specialists to assist you.
Call 1-847-549-7600 or go
online to e-mail or chat live.
Alarm range,
ft/min (m/s)
30 to 400
TW-33556-50
(0.15 to 2.0)
0 to 1000
TW-33556-60
(0 to 5.0)
30 to 2000
TW-33556-70
(0.15 to 10)
Catalog
number
Blowers
Power
VAC
Hz
Alarm delay
Face velocity
accuracy
5 sec
±10%
120
60
0 to 10 sec
±10%
120
60
5 sec
±10%
120
60
Price
Durable exhaust systems for your hood
Chemical-Resistant Blowers are perfect for use in moderate to highly
corrosive conditions. All blowers feature an epoxy-coated metal frame,
fiberglass-reinforced polyester housing and a polypropylene impeller.
Light-Duty Blowers are used to exhaust fumes containing low levels
of corrosive or organic contaminants. Not recommended for demanding
laboratory exhaust systems.
Chemical-Resistant Blowers
Catalog
number
TW-09078-00
TW-09078-10
TW-09078-40
TW-09078-50
TW-09078-60
TW-09078-90
Blower
type
Standard
Explosion proof
(XPRF)
Motor
1⁄6
hp
hp
hp
1⁄6 hp
1⁄4 hp
1⁄4 hp
1⁄4
1⁄4
Volume
cfm @ rpm
370 @ 373
720 @ 569
520 @ 962
720 @ 569
960 @ 720
700 @ 1173
VAC
115
115
115
115
115/230
115
Power
Hz
60
60
60
60
60
60
A
5.4
8.4
4.4
6.4
9/4.5
4.5
Shpg wt
lb (kg)
90 (40.9)
96 (43.6)
92 (41.8)
90 (40.9)
102 (46.3)
92 (41.8)
Price
Light-Duty Blowers
Catalog
number
TW-33704-75
TW-33704-80†
TW-33704-85†
†Also
Description
350 watt blower
1⁄2 hp blower
3⁄4 hp blower
Collar diameter
Inlet
Outlet
6"
5"
5"
4"
5"
5"
Air
350 cfm
600 cfm
800 cfm
Noise level
(at 10 ft)
65 dB(A)
70 dB(A)
71 dB(A)
Power
115 VAC, 60 Hz,
single phase
Price
available as 3-phase model. Contact our Application Specialists for details.
US Toll-free: 800-323-4340
•
Outside the US: 1-847-549-7600
•
www.coleparmer.com
Canada 800-363-5900 • India 91-22-6716-2222 • UK 0500-345-300
09078-00
783