Fieldpiece SCM4 - Carbon Monoxide Detector - Manual (Page 2)

13 15 18 14 17 16
19 21 24 20 23 22
CO Detectors and
Cracked Heat
Exchangers
A CO detector cannot tell you
if a heat exchanger is good. A CO
detector can indicate that a heat
exchanger may be cracked only if
all of the following conditions occur
simultaneously:
1. The flame must generate high con-
centrations of CO (lack of oxygen,
excess fuel, high temp).
2. Enough exhaust gases must be emit-
ted from the heat exchanger crack.
3. The exhaust gases from the crack
must not be diluted too much
before coming in contact with the
sensor. A cracked heat exchanger
may leak CO in a small stream. You
may measure high concentrations
at one point but low concentrations
only an inch away.
4. The heat exchanger must be the only
possible source for the CO detected.
Maintenance
Clean the exterior with a dry cloth.
Do not use liquid.
Battery Replacement
When the meter displays the
battery should be replaced. Turn your
SCM4 off and replace the 9V battery.
Check Your Sensor:
Coffee Cup CO Test
To demonstrate that your CO sensor
works, turn a ceramic coffee cup upside
down and slide it over the edge of a
counter (or desk) to expose about a third
of the mouth of the cup. Burn a cigarette
lighter inside the exposed mouth of the
cup. Don't burn the counter. When the
flame starts to flicker, you've burned up
most of the oxygen in the cup creating
carbon dioxide and now you're starting
to produce carbon monoxide. Bring the
flame in and out of the mouth of the
coffee cup to just keep the flame alive. The
longer you keep the flame flickering, the
more CO you produce. After 10 seconds
of flickering, extinguish the flame and put
the CO head in the mouth of the cup. You
should see readings in the 100s. Take it out
if it approaches 1000PPM.
CO Sensor Replacement
The SCM4 uses a carbon monoxide
smart sensor. If you are seeing erratic CO
readings or no readings in a known CO
environment, you likely need to replace
the sensor.
1. Obtain replacement sensor model RCM4
from your local distributor.
2. Remove sensor cap by removing the 4
screws.
3. Directly pull out old sensor.
4. Hold the new sensor by the sides. While
holding the sensor on the sides; press
down to secure the new sensor. Do
not press the new sensor from the top.
5. If the sensor is incorrectly installed, "CO
Err" will be displayed and the meter
will automatically shut down after 5
seconds.
Sensor Disposal
The RCM4 Replacement carbon
monoxide smart sensor contains sulfuric
as well as precious metals. The sensor
should be recycled properly through a
local electronic waste center.
Limited Warranty
This meter is warranted against defects
in material or workmanship for one year
from date of purchase. Fieldpiece will
replace or repair the defective unit, at
its option, subject to verification of the
defect.
This warranty does not apply to
defects resulting from abuse, neglect,
accident, unauthorized repair, alteration,
or unreasonable use of the instrument.
Any implied warranties arising from
the sale of a Fieldpiece product, including
but not limited to implied warranties
of merchantability and fitness for a
particular purpose, are limited to the
above. Fieldpiece shall not be liable for
loss of use of the instrument or other
incidental or consequential damages,
expenses, or economic loss, or for any
claim of such damage, expenses, or
economic loss.
State laws vary. The above limitations
or exclusions may not apply to you.
For Service
In the USA, call Fieldpiece Instruments
for one-price-fix-all out of warranty service
pricing. Send check or money order for the
amount quoted. Send the meter freight
prepaid to Fieldpiece Instruments. Send
proof of date and location of purchase
for in-warranty service. The meter will
be repaired or replaced, at the option of
Fieldpiece, and returned via least cost
transportation. Outside of the USA, please
visit www.fieldpiece.com for service
contact information.
www.fieldpiece.com
©Fieldpiece Instruments, Inc 2013; v08
More Instruments
from Fieldpiece
CO Exposure Effects
Note: Effects can vary significantly depending on
age, sex, weight, and overall health.
9 ppm
Minimal. Max allowable concentration
for eight hours (EPA and ASHRAE).
35 ppm
Max for continuous exposure for one
hour (EPA and ASHRAE).
50 ppm Max for eight hours (OSHA).
100 ppm
Trips installed CO detectors. UL2034
specifies a max exposure of 100 min.
200ppm
In two to three hours: slight
headache, tiredness, dizziness,
nausea. UL2034 specifies a max
exposure of 35 min.
400 ppm
In one or two hours: frontal
headaches. In three hours: life
threatening. UL2034 specifies a max
exposure of 15 minutes.
800 ppm
In forty five minutes: dizziness,
nausea, and convulsions.
800 ppm In two to three hours: death.
1600 ppm In one hour: death.
6400 ppm In fifteen minutes: death.
12800 ppm In three minutes: death.
APO MAXMIN HOLD SET
CO2
EA
MAX
°F %
%
°C
ENTER
AUTO-OFF
°F
°C
TEMP CAL
PRESS FOR 1 SECOND
SOX3
Combustion
Check
Excess Air,
%CO
2
and %O
2
Natural
Gas
Oil
#2
Propane Custom
EXHAUST
CLEAR
SET CUSTOM
ON/OFF
FUEL
MAX/MIN
MEASURE/HOLD
ADMN2
Dual-Port
Manometer
Accessory
Head
P1
P2
P1-P2
ON
0.1 ENGLISH
METRIC 0.01
(LCD/10)
Lo Batt
Resolution
ZERO AUTO
OFF
P1 P2
80
AAT3
In-Duct
Psychrometer
& Air Velocity
Head
ON
LO BATT AVG
ENGLISH
ENGLISH METRIC
RH%
Ft/min
°F
RH%
M/s
°C
METRIC
DRY BULB
WET BULB
DEW POINT
AVG
NORMAL
AUTO OFF MICRONS OF MERCURY
SVG3
VACUUM
GAUGE
MIN
ALARM
ENTER
Digital Refrigerant Manifolds
Accessory Heads
Combustion Check with AutoPump Vacuum Gauge
Inc
or
rec
t