Co2meter GasLab SAN-103 User manual
© Copyright 2017, CO2Meter, Inc. All Rights Reserved. Last modified March 14, 2018 1
GasLab SAN-103 Micro Formaldehyde Monitor
User Manual
The GasLab SAN-103 is a wearable, personal safety meter designed to monitor formaldehyde
concentrations (CH2O or H-CHO) in real time. Formaldehyde is a colorless, poisonous, highly
water-soluble gas with an obnoxious odor. At high levels over time, it is a known carcinogen.
Features
•Real-time monitoring of formaldehyde concentration in ppm or mg/m3
•Audible and visual high formaldehyde level alarm
•Includes ambient temperature and % relative humidity sensors
•Silicone boot and metal clip are light and comfortable to wear
•Electrochemical sensor, no consumable parts
•Lithium-ion rechargeable battery. USB Charging port
•Runs 4+ days per charge
Applications
•New Home Construction, Mobile Homes, RVs.Formaldehyde is used in the making of
some plywood, drywall, paneling, fiber board and carpeting. Long-term exposure to these
materials when new has been linked to an increased risk of cancer and respiratory illness.
•Industry.In addition to adhesives, formaldehyde is used to make facial tissue, paper
napkins, roll towels, or any paper products that require strength when wet. It is used as a
component in the creation of paints, foams and permanent press clothing. It may also be
used to preserve biological specimens or for embalming.
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Please take a moment to read these instructions before use. They will provide you with
all the necessary information for the correct use of your formaldehyde monitor.
Theory of Operation
The SAN-103 Formaldehyde Monitor uses an electrochemical sensor to determine the
concentration of formaldehyde in air samples. Air reaches the sensor by diffusing through the
openings on the side of the unit. Normal air movement is enough to carry the sample to the
sensor.
Device
1. OLED display
2. Power button
3. Units switching button
4. Alarm LED
5. Micro USB charge port
6. Vent
7. Clip
8. Silicone boot
OLED Display
1. Formaldehyde concentration
2. Air Temperature (°F or °C)
3. % Relative Humidity
4. Concentration unit in ppm or mg/m3
5. Battery Charge Indicator
OPERATION
Plug the USB cable into the meter and a 120VAC wall adapter. It will take approximately 2
hours to receive a full charge. Once the meter is charged, it can run 10+ days before
recharging.
Press the power button to turn on the meter.
When the meter is first turned on, it performs a 10 second countdown for device warm up, then
enters normal display with the current formaldehyde level displayed. The device starts taking
measurements when powered on and updates readings every 3 seconds.
The OLED display will turn off automatically after 120 seconds of inactivity to conserve battery
power. However, the sensor will continue to monitor the CO level. Briefly press the Power
button to view the display.
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Hold down the Power button for 3 seconds to turn the meter off. This will conserve the battery’s
charge until you need to use the meter again.
High Formaldehyde Level Alarm
The SAN-103 is equipped with audio and visual alarms to alert you when the ambient
formaldehyde concentration exceeds 0.9mg/m3 or 0.72ppm (parts per million). The LED will
flash and an audible alarm will sound.
These OSHA PEL (personal exposure limits) levels are set at the factory and cannot be
changed.
Fahrenheit and Celsius Switching
•Press the UNITS button to select °F or °C.
•Press the Power button briefly to save the temperature setting and return to normal display.
Formaldehyde Units Switching
•Press the UNITS button until either mg/m3 or ppm is shown on the display.
•Press the Power button briefly to save the units setting and return to normal display.
Low Battery Alarm
The meter continuously measures the rechargeable battery’s voltage. If it drops to a critical
level, the low battery alarm will sound until the battery is recharged or the battery power is
depleted.
Note that the meter can continue to monitor formaldehyde levels while charging.
SENSOR CROSS-SENSITIVITY
Electrochemical sensors are cross-sensitive to specific gases other than the target gas of
interest. While cross-sensitivities are limited as much as possible by sensor design, some
interactions still exist. The table below shows the most common cross-sensitivities.
Gas
Cross Sensitivity (%)
CO
1
H2
0.1
SO2
12
NH3
0
CO2
0
Ethanol, methanol
50
Phenol
7
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Extremes of humidity may cause a background reading on measurement.
If the meter is exposed to one of the above gases, it will clear itself if you expose it to normal
outdoor air for 30 minutes. Do not expose the device to the fumes of inorganic solvents (e.g.,
paint fumes) or organic solvents.
SPECIFICATIONS
HCHO Sensor Specifications
Measurement Range
0 to 5.0ppm
Resolution
0.01ppm
Temperature Range
-10 to 40°C (14~104°F)
Humidity Range
15 to 90%RH
Temperature Drift
0.35%/°C
Baseline Drift (20-40°C)
0.00ppm
Response Time
<30 Seconds
Temperature Sensor Specifications
Temperature Range
-10.0 to 60.0°C (14~140°F) display
Display Resolution
0.1°C (0.1°F)
Display Options
°C/°F (switchable)
Accuracy
±0.5°C( ±0.9°F)
Response Time
5~30 seconds(device must equilibrate with
environment)
% RH Sensor Specifications
Measurement Range
0.0 to 99.9%RH
Display Resolution
1%RH
Accuracy
±4.5%RH
Response Time
<8 seconds for 63% of step change
General
Operating
-10°C to 40°C (14°F to 104°F),15~90% RH non-condensing
Storage
-10°C to 60°C( 14°F to 140°F),<99% RH non-condensing
Power Supply
Li-ion battery(4.2V, 400mAh)
Dimensions
60x35x25mm (2.36x1.38x0.98”)
Weight
40 grams (1.41oz.)
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CLEANING AND STORAGE
The front panel and case can be cleaned with a mild solution of detergent and water. Apply
sparingly with a soft cloth and allow drying completely before using. Do not use aromatic
hydrocarbons or chlorinated solvents for cleaning.
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TROUBLESHOOTING GUIDE
Symptom / Issue
Possible Cause / Resolution
Device does not power ON
Make sure the power supply is connected properly and
that there is power at the outlet. Use the supplied adapter.
Verify that your meter has had enough time to charge
before turning it on.
Reading does not change
In fresh air, you will rarely see levels above 0.3ppm. This
is normal.
EXPOSURE LIMITS FOR FORMALDEHYDE
•OSHA PEL (permissible exposure limit): 0.9 mg/m3
•OSHA TWA (time-weighted average): 0.75 ppm long-term (8 hours)
•OSHA STEL (short-term exposure limit): 2 ppm (15 minutes)
•Formaldehyde levels in fresh air: < 0.3ppm
SUPPORT
The quickest way to obtain technical support is via email. Please send all support inquires to
Please include a clear, concise definition of the problem and any relevant troubleshooting
information or steps taken so far, so we can duplicate the problem and quickly respond to your
inquiry.
WARRANTY
This meter comes with a 1 YEAR (warranty period) limited manufacturer’s warranty, starting
from the date the meter was shipped to the buyer.
During this period of time, CO2Meter.com warrants our products to be free from defects in
materials and workmanship when used for their intended purpose and agrees to fix or replace
(at our discretion) any part or product that fails under normal use. To take advantage of this
warranty, the product must be returned to CO2Meter.com at your expense. If, after examination,
we determine the product is defective, we will repair or replace it at no additional cost to you.
This warranty does not cover any products that have been subjected to misuse, neglect,
accident, modifications or repairs by you or by a third party. No employee or reseller of
CO2Meter.com’s products may alter this warranty verbally or in writing.
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LIABILITY
All liabilities under this agreement shall be limited to the actual cost of the product paid to
CO2Meter.com. In no event shall CO2Meter.com be liable for any incidental or consequential
damages, lost profits, loss of time, lost sales or loss or damage to data, injury to person or
personal property or any other indirect damages as the result of use of our products.
RETURNS
If the product fails under normal use during the warranty period, a RMA (Return Material
Authorization) number must be obtained from CO2Meter.com. After the item is received
CO2Meter.com will repair or replace the item at our discretion.
When requesting a RMA please provide reason for return and original order number.
If we determine that the product failed because of improper use (water damage, dropping,
tampering, electrical damage etc.), or if it is beyond the warranty date, we will inform you of the
cost to fix or replace the product.
For additional warranty information visit our website: www.CO2Meter.com/pages/faq
CONTACT US
We are here to help!
For information or technical support, please contact us.
(386) 256-4910 ( Technical Support)
(386) 872-7665 (Sales)
www.co2meter.com
CO2Meter, Inc.
131 Business Center Drive
Ormond Beach, FL 32174 USA
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