DALEMANS U-V6, Инструкция по эксплуатации

Страница: 21 / 67

DALEMANS sa/nv
Rue Jules Mélotte 27A
B-4350 Remicourt
+32 19 33 99 43
U•V6 Instruction Manual
20 | 65
Certified
ISO9001 • VCA
www.dalemans.com
▪
The input for an external alarm is not enabled
▪
The analogue output is enabled, with a 4-20 mA, single-gain current loop
3.3 Target Gases and Alarm Thresholds
Each configuration of the U•V6 unit comprises preset alarm thresholds for each target gas.
These are saved in the unit's memory and may be assigned to each input channel.
The settings associated with a given target gas are as follows:
▪
Target Gas name : the name of the molecule or gaseous compound to be detected.
The target gas selected for an input channel must correspond to the target gas for
the connected detector
▪
Range of Measurement : in the event that gas is detected, this value corresponds to
the full-scale measurement, i.e. the highest gas concentration that can be measured.
The range of measurement selected on a channel must match the range of
measurement for the connected detector
▪
Unit of Measurement : the physical value that characterises the signal measured
▪
Number of Alarm Thresholds : allows the user to define several alarm conditions
with different threshold values or calculation methods
All the settings for a target gas that are used on one or more input channels apply to all of
these input channels.
Target gases for car parks
The following table lists the preset target gases for car parks:
TARGET GASES & ALARM LEVELS
– CAR PARKS
Targe
t gas
Range
Alarm Level 1
(A1)
Alarm Level 2
(A2)
Alarm Level 3
(A3)
Thresho
ld
Type
Latching
mode
Threshold Type
Latching
mode
Thres
hold
Type
Latching
mode
CO 300ppm 30 ppm
TWA**
15 min
Non-latching 60ppm
TWA**
15 min
Non-latching
150
ppm
1 min
above
threshold
Latching
NO
2
30ppm 3 ppm
TWA**
15 min
Non-latching 6ppm
TWA**
15 min
Non-latching
15
ppm
1 min
above
threshold
Latching
LPG 100% LEL 10% LEL Instantané Latching 20% LEL Instant Latching
40%
LEL
Instant Latching
CNG 100% LEL 10% LEL Instantané Latching 20% LEL Instant Latching
40%
LEL
Instant Latching
*
Alarm Levels: A1 is the alarm level 1, A2 is the alarm level 2, A3 is the alarm level 3.

Please contact a DALEMANS representative for more details about the other possible
standard configurations.