cannot be acknowledged, latching, like main alarm,
7
Alarm A1 at O
sensor
2
cannot be acknowledged, latching, main alarm,
7
Alarm A2
®
1)
X-am
is a registered trademark of Dräger.
2)
Different settings can be selected to meet customer requirements on delivery.
The current setting can be checked and changed with the Dräger CC Vision software.
3)
A periodic short flashing indicates the operating capacity of the instrument. If there is no
operating signal, correct operation cannot be guaranteed.
4)
STEL: average value of an exposure over a short period, generally 15 minutes.
5)
Interpretation only if the sensor is designed for this.
6)
TWA: shift averages are workplace limit values for generally eight hours per day of
exposure for five days a week during a working life.
7)
Latching and acknowledgement of alarms A1 and A2 can be configured with the
Dräger CC Vision PC software.
8)
The set capture range can be read on the gas detector and can be activated and
deactivated. The capture range is activated in measuring mode by default. The capture
range is always deactivated in calibration mode.
Selecting or disabling the capture ranges (only applies for the
measuring mode):
The capture range is selected in the measuring mode (factory setting)
and permanently disabled in calibration mode.
The CC-Vision PC software can be used to select or disable the
capture ranges for the measuring mode.
3.1
Instrument settings
The following parameters can be changed on an instrument:
Name
Password
1
Operating signal LED
1
Horn operating signal
Switch-off mode
Dräger X-am 2500
falling flank
rising flank
Range
Numerical range (3-digit)
Yes / No
Yes / No
"switch-off allowed" or
"switch-off prohibited" or
"switch-off prohibited at A2"
Name
2
Shift length (TWA)
Short-term exposure level (STEL)
1)
At least one of the two operating signals must be switched on.
2)
Corresponds to averaging time and is used to calculate the TWA exposure value.
3)
Interpretation only if the sensor is designed for this.
4)
Corresponds to averaging time and is used to calculate the STEL exposure value.
3.2
Sensor settings
The following parameters can be changed on the sensors:
Name
Alarm threshold A1 (in measuring unit)
Alarm threshold A2 (in measuring unit)
1
Interpretation type
Alarm threshold STEL
1
(in measuring unit)
Alarm threshold TWA
1
(in measuring unit)
1)
Interpretation only if the sensor is designed for this.
3.3
Check of parameters
To ensure that the values were correctly transferred to the gas detection
instrument:
1. Press the data from X-am 1/2/5x00 in Dräger CC Vision.
2. Check parameters.
Configuration
Range
60 - 14400 (in minutes)
(Setting for exposure alarm)
0 - 15 (in minutes)
3 4
(Setting for exposure alarm)
Range
0 - A2
A1 – measuring range end value
Inactive, TWA, STEL, TWA+STEL
0 – measuring range end value
0 – measuring range end value
21