DrägerSensor COCl – 68 09 930 - Pulse Instruments

DrägerSensor ® COCl 2 – 68 09 930
Data Sheet
This data sheet is a sensor specific supplement to the "Instructions for Use" of the respective transmitter. Please consult in any event the
"Instructions for Use" of the transmitter.
Intended Use
The DrägerSensor ® COCl 2 is an electrochemical three electrode sensor for the continuous real-time monitoring of phosgene gas (COCl 2 ) in
ambient air. The sensor is designed to be used only in conjunction with a Dräger transmitter (e. g. Polytron 2).
Technical Data
Electrode reactions Measuring electrode: COCl 2 + H 2 O + 2 Me ––> CO 2 + 2 H + + 2 MeCl + 2 e -
Counter electrode:
O 2 + 4 H + + 4 e - ––> 2 H 2 O
Measuring gas COCl 2
Measuring range:
minimum
default
maximum
Calibration interval: *
minimum
default
maximum
Ambient conditions:
Operation
Storage
Expected sensor life
Lower detection limit **
Linearity tolerance
Repeatability:
zero
sensitivity
Effect of temperature:
zero
sensitivity
Effect of pressure:
zero
sensitivity
Effect of humidity
zero
sensitivity
Effect of flow between 0 and 6 m/s (0 and 1180 ft/min):
zero
sensitivity
Long-term drift:
zero
sensitivity
Response time t 0...50 **
Warm-up time:
Sensor ready for operation after ***
Sensor ready for calibration after ****
0.5 ppm
1 ppm
1 ppm
1 day
3 months
6 months
–40 °C to 65 °C (–40 °F to 150 °F)
700 hPa to 1300 hPa (20.7" Hg to 38.4" Hg at 32 °F)
10 % r.h. to 95 % r.h., non condensating
0 °C to 25 °C (30 °F to 80°F)
700 hPa to 1300 hPa (20.7" Hg to 38.4" Hg at 32 °F)
30 % r.h. to 70 % r.h., non condensating
> 9 months, max. gas exposure 150 ppm x hours
0.05 ppm
≤ ± 20 % of full scale value
≤ ± 0.02 ppm
≤ ± 10 % of measured value
≤ ± 0.002 ppm / K
≤ ± 0.5 % of measured value / K
no effect
≤ ± 0.1 % of measured value / hPa
≤ ± 0.0005 ppm/% r.h.
≤ ± 0.3 % of measured value/% r.h.
no effect
≤ ± 20 % of measured value
≤ ± 0.01 ppm / month
≤ ± 5 % of measured value / month
≤ 30 seconds
≤ 15 minutes
≤ 1 hour
® DrägerSensor is a trademark of Dräger, registered in Germany.
* Only applicable when used in conjunction with Polytron 2 or Polytron 2 XP.
** At 25 °C (77 °F), 1013 hPa (29.2" Hg at 32 °F), 50 % r.h.
*** At this time, the actual zero point error of the sensor is less than 4 times the value stated in this data sheet.
**** At this time, the sensor has reached its specific accuracy.

Cross Sensitivities
The table shows the response of the sensor to other gases than target gas (cross sensitivities). The values are typical and apply to new sensors.
The table does not claim to be complete. Gas mixtures can be displayed as the sum of all components. Gases with negative cross sensitivity may
displace a positive reading of the sensor.
Gas / Vapor Chemical Symbol Gas concentration Displayed value in ppm COCl 2
without selective filter K2F with selective filter K2F
Carbon dioxide CO 2 5 000 ppm ≤ 0.01 no effect
Carbon monoxide CO 1 000 ppm ≤ 0.01 no effect
Chlorine Cl 2 0.1 ppm ≤ 0.05 ≤ 0.05
Chloro-formic acid methl ester CH 3 OCOCl 1 ppm ≤ 0.01 no effect
Ethanol C 2 H 5 OH 5.8 % by vol ≤ 0.01 no effect
Hydrogen H 2 1 000 ppm ≤ 0.01 no effect
Hydrogen chloride HCl 1 ppm ≤ 0.5 no effect
Hydrogen cyanide HCN 1 ppm ≤ 0.2 ≤ 0.2
Hydrogen peroxide H 2 O 2 1 ppm ≤ 0.01 no effect
Hydrogen sulfide H 2 S 1 ppm ≤ 1.0 no effect
Hydrocarbons – – – % by vol. range ≤ 0.01 no effect
Nitrogen dioxide NO 2 1 ppm ≤ 0.02 (–) * ≤ 0.02 (–) *
Ozone O 3 1 ppm ≤ 0.01 (–) * no effect
Phosphine PH 3 0.5 ppm ≤ 0.1 ≤ 0.1
i-Propanol (CH 3 ) 2 CHOH 4.5 % by vol. ≤ 0.01 no effect
Sulfur dioxide SO 2 1 ppm ≤ 0.01 no effect
(–) * negative display.
Order List
DrägerSensor ® COCl 2 ....................................................... 68 09 930
Selective filter K2F .............................................................. 68 09 933
For calibration:
Calibration adapter .............................................................. 68 06 978
Pressure reducer ................................................................ on request
Test gas cylinder 99.9 % N 2 (zero gas), 4 L, 200 bar .......... 68 05 113
67 mm (2.64")
00123456
Ø 27.6 mm (1.08")
Ø 50 mm (1.97")
Dräger Safety AG & Co. KGaA – < Revalstraße 1, D-23560 Lübeck, Germany – y +49 451 8 82 - 27 94 – FAX +49 451 8 82 - 49 91
! http://www.draeger.com/gds
9th edition - September 2001
Subject to alteration
90 23 515 - TD 4681.460 en/de
© Dräger Safety AG & Co. KGaA