Inficon LDM150 User manual

LDM150
Operating Manual
LDM150
Refrigerant Monitor
English · Español ·Deutsch · Français ·Svenska · Italiano ·中文

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LDM150
LDM150
LDM150 ................................................................................................................................................... 3
English..................................................................................................................................................... 6
Español.................................................................................................................................................. 11
Deutsch.................................................................................................................................................. 16
Français................................................................................................................................................. 22
Svenska................................................................................................................................................. 27
Italiano ................................................................................................................................................... 32
中文........................................................................................................................................................ 37

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LDM150
LDM150
LDM150
Fig. 1
Fig. 2
Fig. 3
t [s]
25 4515 35 5510530 5020 40 60
AlarmC
POWER/ACTIVE
AlarmB
AlarmA
5

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LDM150
LDM150
Fig. 4
Ammonia (NH3)
Amoniaco (NH3)
Ammoniak (NH3)
Ammoniac (NH3)
Ammoniak (NH3)
Ammoniaca (NH3)
氨(NH3)
H1 = 20 cm
X = 50 cm
Y = 20 cm
HFC, HFO, HCFC
HFC, HFO, HCFC
HFKW/HFO/H-FCKW
HFC, HFO, HCFC
HFC, HFO, HCFC
H3 = 20 cm
X = 50 cm
Y = 20 cm
Carbon Dioxide (CO2)
Dióxido de carbono (CO2)
Kohlendioxid (CO2)
Le dioxyde de carbone (CO2)
Koldioxid (CO2)
Anidride carbonica (CO2)
二氧化碳(CO2)
H2 = 150 cm
X = 50 cm
Y = 20 cm

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LDM150
LDM150
Fig. 5 [mm]
Fig. 6 [mm]

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English
English
English
LDM150 Operating Manual
1. Table of Contents
2. Declaration Of Conformity ........................................................................................................... 7
3. Cautions and Warnings ............................................................................................................... 8
4. Alarm Levels, Factory Settings.................................................................................................... 8
5. Function....................................................................................................................................... 8
6. Service Function.......................................................................................................................... 9
7. Installation/Positioning................................................................................................................. 9
8. Calibration, Alarm Setting............................................................................................................ 9
9. Annual Function Control .............................................................................................................. 9
10. Automatic/Manual Alarm Reset ............................................................................................... 9
11. Alarm Time Delay (T1) ............................................................................................................ 9
12. Self-Test Function ................................................................................................................... 9
13. Fault Function........................................................................................................................ 10
14. Fail Safe................................................................................................................................. 10
15. Technical Data....................................................................................................................... 10

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2. Declaration Of Conformity

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3. Cautions and Warnings
WARNING
The unit must only be opened by authorized personnel!
No matter if power supply is removed the unit can still have external high voltage
over the volt free contacts.
4. Alarm Levels, Factory Settings
Ammonia (NH3) 0-4000 ppm
C=150 ppm
B=500 ppm
A=3000 ppm
HFC, HFO, HCFC 0-4000 ppm
C=100 ppm
B=1000 ppm
A=2000 ppm
Carbon Dioxide (CO2) 0-10000 ppm
C=2000 ppm
B=5000 ppm
A=8000 ppm
5. Function
When power supply is switched on, a green LED will flash to indicate power ”ON”. This will also start
the heating process of the sensor. After approximately 4 minutes the green LED will light and indicate
”Sensor Active”.
The detector has one yellow and two red LEDs. The yellow LED indicates low gas concentration
(Alarm C) and the red LEDs indicate medium gas concentration (Alarm B) and high gas concentration
(Alarm A).
When gas is detected the LEDs (2 - Fig. 1) will light and the relay corresponding to the alarm level will
change state. If alarm delay is chosen (see below) the respective LED will flash, and it will light (and
the relay will change state) when the chosen delay time is exceeded.
1.1: n 1 - Delay
1.2: n 2 - Delay
1.3: n 3 - Alarm reset: ON=Auto, OFF=Manual
1.4: n 4 - Not used
2.1: LED A
2.2: LED B
2.3: LED C
2.4: Power
3.1: GV Offset
3.2: +5 VDC
3.3: (-)
3.4: ALARM C
3.5: ALARM B
3.6: ALARM A
3.7: Test terminal
4.1: A adjustment
4.2: B adjustment
4.3: C adjustment
5: Reset/Test/Service

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6. Service Function
Pressing the ”Reset/Test/Service” button (5 - Fig. 1) for 10 seconds will disengage all alarm functions
for 60 minutes. During this period, it is always possible to start a new 60-minutes period by pressing
the button for 10 seconds again. Return to active status happens automatically at the end of the 60-
minutes period or may be done manually by a single press on the “Reset/Test/Service”-button. When
the service function is activated all LED’s will flash and all relays will be in normal mode position.
See Fig. 3
7. Installation/Positioning
The general rule is that the detector should be placed as close to the potential leak as possible, and at
the same time consider the gas density and any air movements in the room. The detector must also
be positioned in such a way that it is easily accessible for service. See Fig. 4 for suggestions on
suitable placement.
8. Calibration, Alarm Setting
The detectors are delivered for a specific gas type and other calibrations are normally not necessary.
The detector is named with the required gas type being detected. It is, however, very easy to change
the thresholds by using MCT150 Monitor Calibration Tool.
MCT150 Monitor Calibration Tool is connected to the test terminal. (3 - Fig. 1)
9. Annual Function Control
Testing the system is recommended to be done at least once a year. A basic function test can be
made using the MCT150 Monitor Calibration Tool.
10. Automatic/Manual Alarm Reset
Is managed by DIP switch (1 - Fig. 1) no3 where “ON” means automatic reset and “OFF” means
manual reset by pressing the “Reset/Test/Service” button (5 - Fig. 1 - located under the cover).
11. Alarm Time Delay (T1)
Is managed by DIP-switches (1 - Fig. 1) no1 and no2:
no1
no2
Alarm delay
ON
ON
No alarm delay
OFF
ON
(1) minutes alarm delay
ON
OFF
(10) minutes alarm delay
OFF
OFF
(30) minutes alarm delay
12. Self-Test Function
Press the “Reset/Test/Service” button (5 - Fig. 1) for 5 seconds and the test program will start and go
through all LED functions and all relay functions in five seconds intervals. See Fig. 2.

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13. Fault Function
If there is a voltage drop (GV-value below 0,1V) from the sensor there is a fault situation. During the
first four hours the green LED will be deactivated, and the other LED’s will flash. Alarm relay C will
change state. After four hours the LED “Alarm B” will light (other LED’s will be deactivated) and relay
“Alarm B” will also change state.
14. Fail Safe
Relays are in normal mode energized and will change state if power failure or if a fault situation
occurs.
15. Technical Data
Housing HFC & NH3:
Polycarbonate, (PC) IP54
Power consumption:
Max 2W
Housing CO2:
Polycarbonate, (PC) IP67
Power consumption:
Max 3W
Power supply:
LDM150: 12-24V AC/DC
LDM150,HFC/NH3, High Voltage: 230V AC, 50/60 Hz
LDM150, CO2, High Voltage: 85-230V AC, 50/60 Hz
Indications:
Power/Active and alarm indication on three levels.
Outputs relay:
Potential free contacts (230V, max 5A) .
Ambient temp:
-40 °C - + 50 C (Automatic temperature compensation)
Humidity:
0-95% RH (non-condensing)
Glands:
4 of M16 membrane glands
Screw terminals:
< 1,5 mm2, fuse < 10A
Please Note!
The semi conductive sensors used in the LDM150 range of products are not gas
specific. Care should be taken when installing the equipment to minimize any cross
contamination from other gases or vapors.
For further guidance on specific applications contact us.
This product is intended for use in the industrial area.
Specifications subject to change.

Due to our continuing program of product improvements, specifications are subject to ch
ange without notice.
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TEK-Check and Wey-TEK are trademarks of INFICON. All other trademarks are the property of their res
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