Hansen Technologies HGD-EC-NH3-100 Specifications, Applications, Service Instructions & Parts page 19

GAS Alert System
KEY FEATURES−GAS ALERT SYSTEM
•
Provides local display and alarm based on
measured target gas level
•
Visual alarm, Amber LED light
•
Audible alarm (mutable)
•
Power indicator, Green
•
Numeric PPM reading
•
Bright LED display
KEY FEATURES−GAS ALERT SYSTEM
•
Shipped factory calibrated and tested
• Provides local display and alarm based on
measured target gas level
• Visual alarm, Amber LED light TECHNICAL SPECIFICATIONS
• Audible alarm (mutable) Opera;ng Temperature Range: -10ºF (-23ºC) to
125ºF (50ºC)
• Power indicator, Green
Humidity Range (Non-condensing): 0-95%
• Numeric PPM reading
Voltage Requirements: 24V AC/DC, 50/60 Hz
• Bright LED display
Display: LED, Red
• Shipped factory calibrated and tested
Loop Resistance: 100 ohms
TECHNICAL SPECIFICATIONS
Power Requirements at 24V AC, 50/60Hz with
Operating Temperature Range: -10ºF (-23ºC) to
sensor: 11.4VA
125ºF (50ºC)
Power Requirements at 24V DC with sensor: 247mA
Humidity Range (Non-condensing): 0-95%
Audible Alarm Sound Pressure: 97dB at 2 feet
Voltage Requirements: 24V AC/DC, 50/60 Hz
Tone Type: Con;nuous, 2900 Hz
Display: LED, Red
Muted Sound Pressure: 60dB at 2 feet
Loop Resistance: 100 ohms
Visual Alarm, LED Lamp: Amber, 38 lumens
Power Requirements at 24V AC, 50/60Hz with sensor:
Enclosure: Water;ght, NEMA4X (IP65)
11.4VA
Pollu;on Degree: 4
Power Requirements at 24V DC with sensor: 247mA
True Al;tude: 2000M
Audible Alarm Sound Pressure: 97dB at 2 feet
Installa;on Category: 1
Tone Type: Continuous, 2900 Hz
Muted Sound Pressure: 60dB at 2 feet Duty Cycle: 100%
Visual Alarm, LED Lamp: Amber, 38 lumens Equipment Class: 3
Enclosure: Watertight, NEMA4X (IP65)
INSTALLATION OF GAS ALERT SYSTEM
Pollution Degree: 4
True Altitude: 2000M
Installation Category: 1
Duty Cycle: 100%
Equipment Class: 3
The GAS Alert System is shipped factory calibrated
INSTALLATION OF GAS ALERT SYSTEM
and tested; ready to use. Mount in a loca;on safe
and easily accessible. Avoid thermal extremes and
The GAS Alert System is shipped factory calibrated
and tested; ready
areas where falling water or condensa;on moisture
and easily accessible. Avoid thermal extremes and
is present.
areas where falling water or condensation moisture
The GAS Alert System can be mounted to any solid
is present.
flat surface. See installa;on dimensions on page 17.
The GAS Alert System can be mounted to any solid
Two op;ons are available for moun;ng; screw the
flat surface. Two options are available for mounting;
screw the base to a solid flat surface or clip-on to a
base to a solid flat surface or clip-on to a DIN-rail.
DIN-rail. The lower cover must be removed to access the
The lower cover must be removed to access the two
two mounting holes for screw mounting. Attach to the
moun;ng holes for screw moun;ng. Abach to the
wall with the appropriate mounting screws. Replace the
wall with the appropriate moun;ng screws. Replace
cover when complete.
the cover when complete.
WIRING GAS ALERT SYSTEM
WIRING GAS ALERT SYSTEM
The GAS Alert System can be used as a standalone, locally
monitored system or as part of a larger gas monitoring
The GAS Alert System can be used as a standalone,
and signaling system. The lower cover to the terminal
locally monitored system or as part of a larger gas
compartment must be removed to gain access for wiring.
monitoring and signaling system. The lower cover to
Knockouts are available for ¼˝ and ½˝ conduit or liquid
the terminal compartment must be removed to gain
tight cable clamps. To use as a standalone system one
gas sensor is required. The gas sensor is powered via
access for wiring. Knockouts are available for ¼˝ and
the GAS Alert System. The gas sensor 4-20mA signal is
½˝ conduit or liquid ;ght cable clamps. To use as a
fed back to the GAS Alert System to allow for a numeric
standalone system one gas sensor is required. The
readout of the actual PPM value measured. The gas
gas sensor is powered via the GAS Alert System. The
sensor internal relay is wired to the GAS Alert System to
trigger the signaling lamp and sounder. The GAS Alert
gas sensor 4-20mA signal is fed back to the GAS Alert
System signal lamp and sounder will clear when the gas
System to allow for a numeric readout of the actual
level as detected by the gas sensor drops below the
PPM value measured. The gas sensor internal relay is
adjusted trip point. The default setting from the factory
wired to the GAS Alert System to trigger the signaling
for a specified gas sensor is half the total range.
lamp and sounder. The GAS Alert System signal lamp
To use as part of a larger gas monitoring and signaling
and sounder will clear when the gas level as
system, each GAS Alert System will be mated with a gas
sensor. The 4-20mA signal can be used to drive the GAS
detected by the gas sensor drops below the adjusted
Alert System device, plus a larger monitoring system or
trip point. The default seqng from the factory for a
PLC monitoring signaling system.
specified gas sensor is half the total range. For typical
Due to system irregulaties the Gas Alert System LED
wiring refer to page 19.
display, when connected to a gas sensor with no target
To use as part of a larger gas monitoring and
gas present, the display may not read at zero. If this is
signaling system, each GAS Alert System will be not acceptable, the user can adjust the LED display in
the Gas Alert System or adjust the zero setting in the
mated with a gas sensor. The 4-20mA signal can be
gas sensor.
used to drive the GAS Alert System device, plus a
To adjust the Gas Alert System LED display, open the clear
larger monitoring system or PLC monitoring signaling
cover and remove the LED display panel by removing the
system. For typical wiring refer to Fig. 19.
4 screws. On the backside of the LED display, adjust the
Due to system irregula;es the Gas Alert System LED
potentiometer labeled Z until the display reads 0 PPM.
Reverse procedure to assemble.
display, when connected to a gas sensor with no
target gas present, the display may not read at zero.
If this is not acceptable, the user can adjust the LED
display in the Gas Alert System or adjust the zero
seqng in the gas sensor. Refer to pages 9 and 10 for
adjus;ng the gas sensor zero seqng.
To adjust the Gas Alert System LED display, open the
clear cover and remove the LED display panel by
removing the 4 screws. On the backside of the LED
display, adjust the poten;ometer labeled Z un;l the
19
to use. Mount in a location safe
JANUARY 2020
A100h