WatchGas PDM User manual

USER MANUAL
Single gas detector
PDM
we watch gas where you can't

Single gas detector
PDM
CONTENTS
DESCRIPTION 3
WARNING 3
CAUTION 3
1. PRODUCT OVERVIEW 4
2. ACTIVATION 5
3. MODE 5
3.1 Detection Mode 5
3.2 Display Mode 5
3.3 Alarms / Battery / Test Failure display 6
3.4 Alarm Set Points 7
3.5 Default Calibration Concentrations 7
4. EVENT LOG 7
5. CALIBRATION 7
5.1 Fresh Air Calibration 7
5.2 Standard Gas Calibration 8
5.3 Return to the Detection Mode 9
6. SELF TEST & BUMP TEST 9
6.1 Self Test 9
6.2 Bump Test 10
7. SPECIFICATIONS 11
8. CERTIFICATES 12
9. LIMITED WARRANTY 13

3
Single gas detector
PDM
DESCRIPTION
The PDM is a portable single gas monitor designed to warn the user about the presence of dangerous
concentrations of oxygen, combustible, or toxic gases in the atmosphere. It is simple to operate. The PDM

-
           

WARNING
• Any unauthorized attempt to repair or modify the product, or any other cause of damage beyond the

manufacturer.
• -
hold(s), to ensure proper sensor response and alarm functionality.
• 
such as dirt and debris that could block the area where gas is to be detected.
• -

• Perform cleaning and maintenance of the products in fresh air that is free of hazardous gases.
• Test the response of a sensor regularly by the gas concentration exceeding alarm set point.
• 
• -


• 

has stabilized.
• 

to malfunction.
• 

work site where the instrument is used.
• Use IR communications in the safety zone which is free of hazardous gases.
• Do not attempt to replace the battery and sensor as PDM is designed to be disposable Changing the

CAUTION
• 
• 
• 
• For the O
• 

• Clean detectors with a soft cloth and do not use chemical substances for cleaning
• 

deplete the battery lifetime less than 24 months.
1. 
2. 
* Normal Alarm use 1 time and 2 minutes per day
3. 
• 

4
Single gas detector
PDM
DETECTOR COMPONENTS
1. Gas sensor
2. Gas type sticker
3. 
4. Button
5. Buzzer
6. 
7. IR communication port
1. PRODUCT OVERVIEW
3
6
1
2
4
DISPLAY SYMBOLS
5
6
7
Alarm

High Alarm
Stabilization Success
Failure
Fresh Air Calibration
Standard Gas Calibration
Remaining Months
Remaining Days
Remaining Hours
Max Concentration Value
Min Concentration Value
Unit of Measurement

or low battery

5
Single gas detector
PDM
2. ACTIVATION
 ) for three seconds, after the three
            
 
complete, 
 will appear on the display and gas measure-
ment mode will not be entered. In this case, perform calibration or contact authorized reseller
for repair / return information.
CAUTION
          

gas. Verify that debris that could interfere with the detection of gas are not
blocking the area where gas is to be detected.
3. MODE
3.1 MEASURING MODE
         
life appears on the screen. Oxygen concentration is displayed in percent

(ppm). per million (ppm).
3.2 DISPLAY MODE
In the Detection Mode, by pressing push the button for one second, the following icons will
appear in order: (only for oxygen) ->      , , 


6
Single gas detector
PDM
At the last step, if you press the key or do not push any button for a second, the PDM will re-
turn to Measuring mode.
3.3. ALARMS / BATTERY / TEST FAILURE DISPLAY
 or 
-
on. The gas concentration will decrease and the alarm will stop.
Alarm Alarm standard LCD Display Alarm and Vibration
1st Alarm 
1st alarm Icon &
concentration
2nd Alarm  Icon &
concentration
Remaining
 
 Past 24 months 
Test Failure
Failure of sensor
test, calibration or
self-test
 
Bump Test
Due Bump test period Preform a bumptest
Calibration
Due Calibration period Preform a calibration
CAUTION
The alarm limits are set based on international standards. Only change these


7
Single gas detector
PDM
3.4. ALARM SET POINTS
Gas O2CO H2S H2SO2NH3NO2
Low alarm  25 ppm 5 ppm  1 ppm  5 ppm
High Alarm  25 ppm 5 ppm  1 ppm  5 ppm
NOTE:
3.5. DEFAULT CALIBRATION CONCENTRATIONS
Gas O2CO H2S H2SO2NH3NO2
Concentration     5 ppm  5 ppm
4. EVENT LOG



• Types of alarms
• 
• Peak concentration
5. CALIBRATION
CAUTION


5.1. FRESH AIR CALIBRATION
To enter the calibration menu press the button x times untill the calibration concentration is dis-
played. Then hold down the button for 3 seconds. Press and hold the key for 5 seconds to enter
the calibration mode ( ), 
           
Fresh Air Calibration Standard Gas Calibration

8
Single gas detector
PDM

Once completed, 
If calibration fails, 
Check that the air is clean and that no contaminants are
blocking the sensor opening and try again. If fresh air

CAUTION
           
any contaminants and other gases. Preferably, do not perform calibration in a

5.2. STANDARD GAS CALIBRATION
Attach the calibration adapter to the PDM and to a gas cylinder with a concentration matching the
calibration concentration. Check 3.1. Display Mode to check the calibration concentration.
Press and hold the key for 5 seconds to enter calibration mode ( ), 
  
appears.


appear on the screen. The duration of the countdown depends upon the sensor type and can be


9
Single gas detector
PDM
Once completed,        
seconds, the PDM will return to Measuring mode.
If calibration fails, 
Check that the gas cylinder is not empty and that is has
not expired. Also make sure that no contaminants are
blocking the sensor opening and try again. If standard gas

CAUTION

using the detector by applying a known concentration of gas from another gas
cylinder.
5.3 REMAINING CALIBRATION DAY
In the standard calibration mode , press the key for a second to toggle fresh air calibration,

of the calibration mode and return to detection mode.
6. SELF TEST & BUMP TEST
6.1 SELF TEST

hours of use.

10
Single gas detector
PDM



the Self test.

 
check the test processes.)
6.2 BUMP TEST


            

the TST message will be displayed for 45 seconds (To cancel, press the button for one second).


If the test is successful, SUC message with 
 will be displayed and BTS


NOTE: Calibration can be done with the Docking Station.

11
Single gas detector
PDM
7. SPECIFICATIONS
SIZE 
WEIGHT ) (Battery, clip included)
SENSOR
TECHNOLOGY 
TEMPERATURE 2)
HUMIDITY 
ALARM TYPE 
ALARM SIGNAL


Vibration alarm
DISPLAY 
CALIBRATION 2-point calibration, zero and span
EVENT LOG 
BATTERY 
MEASUREMENT Diffusion
HOUSING Polycarbonate and rubber
ACCURACY
DEVIATION 
IP-RATING IP67
SAFETY
CERTIFICATIONS





SENSOR LIFE 24 months with Normal Alarm Use 1 time and 2 minutes per day
WARRANTY 24 months
SENSOR SPECIFICATIONS
MODEL DETECTABLE GAS
RANGES RESOLUTION ARTICLE NUMBER
   7181411
PDM CO  1 ppm 7181412
   7181413
   7181414
PDM NH  1 ppm 7181415
  1 ppm 7181416
   7181417

12
Single gas detector
PDM
8. CERTIFICATES
Intrinsic Safety:
The detector is in conformity of the following standards
    Ex ia IIC T4 Ga

Ex ia IIC T4 Ga





    2198 


    

  

Compliance: Electromagnetic Compatibility Directive 2014/30/EU
Standards:


• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 



 13
Single gas detector
PDM
Single gas detector
PDM
9. LIMITED WARRANTY
-


The manufacturer is not liable (under this warranty) if its testing and examination disclose that

  -
tempt to repair or modify the product, or any other cause of damage beyond the range of the

of the manufacturer.


center at [e-mail] for repair/return information.
WatchGas


The Netherlands

www.watchgas.com
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