Helio SL Series User manual
HGD SL Series Ver. 1.0 1
Etha
www.helioGD.com
www.helioGD.com
Helio SL Gas Detector
Operating Manual
HGD SL Series Ver. 1.0 2
Please read and understand the contents of this manual before commencing
installation!
Contents
Important Remarks Page 3
Warranty
Intended Use
Technical Specifications Page 4
Environmental Specifications
Electrical Specifications
Sensor Specifications
Internal Wiring Page 5
Start-up Page 6
Maintenance Page 6
Sensor Replacement Page 6
Detector Overview Page 7
Menu Structure Overview Page 8
Zero calibration
Span Calibration
Network Address
Alarm settings
Set Zone
Menu Structure Overview (continued) Page 9
Advanced Options
Password
Factory reset
Select signal type
Select sensor type
Select Gas
Set Units
Set sensor range
Contact Details Page 10
HGD SL Series Ver. 1.0 3
Important
HELIO gas detectors are fully tested, pre-configured and calibrated before
leaving our manufacturing facility. If you intend altering the configuration we
recommend contacting your local supplier to discuss any changes in advance.
Only qualified and competent personnel approved by Helio Gas Detection may
install, commission and maintain Helio Gas Detection products.
If this product is used in countries outside of the European Union, the
standards and regulations valid in these countries must be observed.
Warranty
All Helio Gas Detection products carry a 12 month warranty. Damage caused to
products by improper transportation, handling and / or installation are not
subject to warranty.
HELIO Gas Detection cannot be held responsible for damage caused by non-
compliance.
Intended Use
HELIO Gas Detection Systems are intended to be used for fixed continuous
monitoring for mixtures of flammable, explosive or toxic gases and vapours
with air under atmospheric conditions.
CAUTION:
Isolation of gas detection alarms will prevent activation of alarm
outputs even if there is a gas hazard present. Only competent
technicians approved by Helio Gas Detection may select this
function if instructed to do so by the systems owner. If the isolation function is
activated without prior knowledge or agreement from the client it will result in
failure to activate any alarms.
HGD SL Series Ver. 1.0 4
Technical Specifications
Technical Data
Environmental Specifications
Operating temperature -30 ºC to 50 ºC
Pressure range 80 to 120 kPA
Humidity range 15 to 90 % rh
Sensor Specifications
Combustible gas sensor type NDIR, Thermo-catalytic
Toxic gas sensor type NDIR, Electro-chemical
Terminations PCB terminal blocks up to 2.5mm2 cables
Alarm inhibit Password protected
alarm inhibit / muting
Alarm setting Freely programmable
Alarm Hysteresis At alarm level
Panel alarm types Energised / de-energised
Enrichment / deficiency
Resolution Sensor dependent
Accuracy Sensor dependent
Full scale range Freely programmable
Memory 128KB flash ROM
Electromagnetic Conformance (EMC) Complies with EN50081 and EN50082
Electrical Specifications
Supply voltage 24Vdc
Power Consumption Max 2W
Fuse 100mA'T' short circuit and overload protected
HGD SL Series Ver. 1.0 5
Internal wiring
Use ferrules if using stranded cables. PCB terminal blocks up to 2.5mm2.
Use twisted pair cable with overall screen when connecting RS485 network.
*Note: All communication and data transmission between transmitters and
control panel carried out via RS485 network or 2-3 wire 4-20mA interface.
HGD SL Series Ver. 1.0 6
Start up
When initially powered on, the gas detector should be allowed to warm up
allowing the sensor to stabilise before calibration.
Maintenance
Helio Gas Detection systems must be inspected and serviced regularly by
trained service personnel. We recommend that a service contract be obtained
with a HELIO Gas Detection approved vendor and that all repairs also be
carried out by them. Only authentic HELIO components may be used for
maintenance purposes. During regular service inspections a full zero and span
calibration must be carried out. Verify the activation and de-activation of all
alarm output signals.
Ensure that gas can freely penetrate the sensor. If required replace the sensor.
Use sensors which are approved only by HELIO Gas Detection.
Sensor Replacement
Observe national regulations for the installation of electrical apparatus in
potentially explosive atmospheres devices (EN 60 079-14). Isolate signal
outputs and de-energise the gas detector.
Unscrew stainless steel sensor housing and remove existing sensor. Align the
replacement sensor pins with the PCB mounting inserts and plug in the new
sensor. Ensure that the new sensor is the same gas type and model as the
original sensor. Energise the transmitter and observe sensor warm-up time
allowing sufficient time to stabilise.
When sensor stabilisation is obtained, verify the zero and span calibration.
____________________________________________________
Attention:
The detector / control panel outputs must be isolated before
disconnecting the sensor.
____________________________________________________
Attention:
After installing a new sensor, the gas detector must be
calibrated.
HGD SL Series Ver. 1.0 7
Overview
The Helio SL gas detector is provided with an internal 2 x 8-character LCD
display, with an “M” menu button and both “Up”and “Down”push buttons to
navigate through the program menus.
During normal operation the internal LCD display shows the current gas
concentration and alarm status if activated.
Gas concentration displayed
as %Vol, ppm or ppb.
Access menu &
calibration functions
Internal LCD Display
HGD GS VER. 1.02 8
MENU OVERVIEW
Menu overview continued next page...
How to Navigate Menus
Press the “M” push button to enter selection across the menu structure. Use the “Up” and
“Down”push buttons to select individual parameters or to adjust settings. CO2 gas is used
as an example to outline the SL detector menu structure, calibration menu, alarm setpoints
etc. Note: these settings may not be suitable for every application. Consult with Helio Gas
Detection representative prior to installation. Upon order, the gas type and signal
configuration should be specified, so that the SL detector can be shipped preconfigured.
HGD GS VER. 1.02 9
Menu overview continued…
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