MRLDS-250 Infrared Gas Detector I&O Manual
Table of Contents • v
Contents
1 INTRODUCTION .............................................................................................................................. 1
1.1. O
VERVIEW
........................................................................................................................................ 1
1.2. D
ETECTION
O
PTIONS
........................................................................................................................ 1
1.2.1. Broadband vs. Gas Specific...................................................................................................... 1
1.2.2. Broadband Gas Detection ........................................................................................................ 1
1.2.3. Detecting Specific Gases .......................................................................................................... 2
1.3. R
EMOTE
C
ONTROLLER
O
PTIONS
....................................................................................................... 3
1.4. P
ARTS
L
IST
....................................................................................................................................... 3
1.5. S
PECIFICATIONS
................................................................................................................................ 4
2 MOUNTING THE GAS DETECTOR ............................................................................................. 5
2.1. W
ARNINGS
AND
P
REREQUISITES
...................................................................................................... 5
2.2. M
OUNTING
L
OCATIONS
.................................................................................................................... 5
2.2.1. General Placement Guidelines................................................................................................. 5
2.2.2. Machinery Rooms..................................................................................................................... 5
2.2.3. Refrigerated Spaces.................................................................................................................. 6
2.2.4. Chillers ..................................................................................................................................... 6
2.3. M
OUNTING
P
ROCEDURE
................................................................................................................... 6
3 WIRING AND CONFIGURATION ................................................................................................ 8
3.1. O
VERVIEW
........................................................................................................................................ 8
3.2. W
IRING
S
UPPLY
P
OWER
(24VAC
OR
24VDC) ................................................................................ 8
3.3. W
IRING
A
LARM
O
UTPUT
(A
NALOG
S
IGNAL
) ................................................................................... 9
3.4. W
IRING
THE
D
IGITAL
A
LARM
O
UTPUT
R
ELAY
................................................................................ 9
3.5. MODBUS N
ETWORK
C
ONFIGURATION
......................................................................................... 10
3.6. F
INISH
I
NSTALLATION
..................................................................................................................... 11
4 OPERATION AND STABILIZATION ......................................................................................... 12
4.1. P
OWER
U
P
AND
W
ARMUP
............................................................................................................... 12
4.2. S
TABILIZATION
............................................................................................................................... 12
4.3. P
ERFORM
A
M
ANUAL
Z
ERO
............................................................................................................ 12
4.4. A
LARMS
.......................................................................................................................................... 12
4.5. G
AS
D
ETECTOR
F
AULTS
................................................................................................................. 13
4.5.1. Overview................................................................................................................................. 13
4.5.2. Non-Critical Faults ................................................................................................................ 13
4.5.3. Critical Faults ........................................................................................................................ 13
5 CONFIGURE THE GAS DETECTOR ......................................................................................... 14
5.1. U
SER
I
NTERFACE
O
VERVIEW
.......................................................................................................... 14
5.2. S
ETTING
P
ARAMETERS
.................................................................................................................... 14
5.2.1. Overview................................................................................................................................. 14
5.2.2. Configuration Parameters...................................................................................................... 14