CIT SUPERIOR SLD Series Service Bulletin

SUPERIOR™ Gas Detector Series SLD
This manual covers both single and dual channel SUPERIOR Gas Detectors, and applies to all gasses for
which sensors are available. Some instructions apply only to Dual Channel (two sensors) MODEL SLD-2
detectors, and are so noted. IMPORTANT NOTE: Chemical Injection Technologies, Inc. recommends
the use of an UPS (Uninterruptible Power Supply) connected directly to the main AC power supply and
then running the Series SLD Gas Detector directly from the UPS device. These devices are readily
available wherever computers are sold. They offer complete functioning of all features in the event of
power loss, as well as excellent power surge and lightning protection. An optional internal battery backup
is available, but like all other similar types of instrumentation, these internal backup power supplies only
allow limited functions, to conserve power, and do not offer any surge or lightning protection.
Power supply: 115 or 230 VAC, 50/60 Hz,
single phase (user selectable by internal switch)
Power consumption: 12 watts
Sensor Input: 4-20 mA DC, current loop
Loop voltage: 15 VDC, short circuit protected
Sensor output: 4-20 mA DC
Maximum load: 600
Gas Sensors Available: chlorine, sulfur dioxide,
ammonia, ozone
1). Mount the SUPERIOR Series SLD Controller/Monitor at eye level. Mount the sensor(s) 12" (30.5 cm)
off the floor in the area(s) where the gas level is to be monitored. The SUPERIOR Series SLD is
supplied with 25 ft. (7.6 meters) of 2-wire cable, for each sensor. Sensor(s) may be located up to
1000 ft. (305 meters) from the controller/monitor.
2). Standard cable(s) is attached at the factory. If it is necessary to disconnect a cable, in order to run
through walls or conduit, etc., note the connections so they can be re-connected properly. If in doubt,
consult the wiring and connection diagrams at the back of this manual.
3). Turn on AC power to the controller/monitor. On power-up, a two (2)
minute delay is started to allow the sensor device(s) time to stabilize,
which prevents false alarms. First, the countdown timer is
Chemical Injection Technologies
Installation/Service Bulletin
Single & Dual Channel
TECHNICAL SPECIFICATIONS
QUICK START GUIDE
INSTALLATION:
Bulletin 4008 - Rev. 1.30 - 4/18/07
Relays:
Maximum current rating: 5 amps
(resistive)
Maximum voltage: 250VAC/30VDC
Maximum Distance between controller &
sensor(s): 1000 ft. (305 meters)
Operating temperature: 32
N
50 C)
Expected sensor operating life: Two years in
air (decreases with exposure to measured
gasses)
Models: SLD-1 = Single Channel
SLD-2 = Dual Channel
1
N N N
F to 122 F (0 C to
SENSOR STABILIZE
2:00