Download Spec Sheet - TQ Environmental PLC

GD129REF SINGLE POINT
INFRA-RED REFRIGERANT
GAS DETECTOR
FEATURES
• Refrigerant gas sensor for
Hazardous area operation.
• Pre-calibrated for specific
refrigerants enabling very
low levels of gas to be
monitored.
• Very stable Infra-red design
for reliable operation and
long life expectancy.
• Wide range of CFC, HCFC
and HFC gases available.
• 4-20mA output as standard,
gas concentration
continuously monitored
• State of the art SMT
Components. No heaters,
mirrors or optics to get dirty
• Low power usage. Wide
range of temperature
operation
The GD129REF, Refrigerant sensor operates on tried &
tested infra-red adsorption principle. A unique sensor
protection system permits operation in the harshest
conditions offshore and in dusty, humid environments.
Remote sensor capability eliminates the need for using
expensive open path systems in inaccessible locations,
ducts and heated enclosures. The sensor is immune to
poisoning and high gas concentrations and is available for
most commonly available refrigerants, with low cross
sensitivity to other gasses. Designed for use in offshore
applications and with a protection rating IP55, the
GD129REF is a versatile and robust instrument
incorporating proven technology.
TQ Environmental Limited
Flanshaw Way  Wakefield  West Yorkshire  WF2 9LP
Tel: +44 (0)1924 380700
Fax: +44 (0)1924 361700
Email: [email protected]
Web: www.tqenv.com
The GD129REF is used to
detect the presence of
Refrigerant gases. The 4-20 mA
output of the sensor would
normally be connected to a TQ
control panel or similar third
party control system capable of
providing indication and alarm
generation.
The GD129REF is used for
diffusion sensing applications,
where the sensor is positioned
at the point of monitoring and
the gas diffuses through the
sensor’s optical path. These
sensors are not affected by
being gassed over range and
can be used in inert
atmospheres as the sensor
does not rely on oxygen being
present to operate correctly.
The GD129REF is a low
maintenance sensor but has full
auto zero and span functions
allowing their calibration in the
field. Can be calibrated in situ,
even in the hazardous area as
the junction box, enclosure
does not have to be opened to
perform the calibration.
SPECIFICATION
Construction
Ingress Protection
Conduit Entry
Weight
Overall Dimensions
Temperature Range
Humidity Range
Shock & Vibration
Resistance
Outputs
Power
Accuracy
Repeatability
Gases and Ranges
Response Time
Built-in Self Test
Non-Intrusive Adjustments
Life expectancy
Warranty
Certification
Other options are available in
the GD129 range for CO2 and a
full range of flammable gases.
Nominal Range 0-2000 ppm R134a. Most standard
refrigerants can be catered for however, Specify
refrigerant type on enquiry or order,
<10 seconds to T50, <20seconds to T90 on CH4 & CO2
Continuous
Calibrated for up to 2 years, with full auto zero and
calibration facility.
>5 years
12 Months
Exd IIC T6 (Ta=-20oC to 55oC)
SIRA 01 ATEX IIII
115
215 Approx
TQ Environmental Limited,
operate a policy of continual
product development which
means the specification is
subject to change without prior
notice.
For full assistance with your
application contact TQ.
Sensor Housing - 316 Stainless Steel with hydrophobic
protection barrier
Protection guard - Stainless Steel
Junction Box
- Cu free aluminium with polyester paint
finish
IP55
M20
ca 2.1Kg
130mm W x 230mm H x 120mm D
-20o to +50oC
0 to 99% R.H (non condensing)
Shock: Half Sine 15g, 20ms duration on all axis
Vibration: 3 - 10 Hz, Displacement 0.5mm
10 - 50 Hz, 2m/s2
4-20mA source into 600 ohms (max)
Operating voltage 24VDC (11-30VDC) Operating Current
75mA @ 24VDC, 2.1 watts
+/- 2% fsd on all ranges (linearised)
+/- 1% fsd
45
81.5
81.5
PARTS LIST
340-100
GD129REF - IR Sensor 0-2000 ppm Refrigerant
Refrigerant type to be specified on order.
Please consult TQ Environmental for other options and ranges
available.
Cert No. LRQ 0958602
D2-GD129REF-0315
TQ Environmental Limited
Flanshaw Way  Wakefield  West Yorkshire  WF2 9LP
Tel: +44 (0)1924 380700
Fax: +44 (0)1924 361700
Email: [email protected]
Web: www.tqenv.com