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In addition to the PLC series of multipoint gas monitors, generally offered for three or more points, INTERSCAN provides a two point system, configured as an expanded version of our LD Series single point gas monitor. This two point system, while not equipped with quite the array of automation features as is standard in our PLC-based multipoints, offers the same proven INTERSCAN gas detection reliability upon which our customers have come to depend. The LD series two point system is available for all the gases monitored by INTERSCAN.

PLC-based two point systems are also available. Please contact the factory.

 

The system includes:

  • Two INTERSCAN electrochemical voltametric sensors with dedicated pneumatics
  • Two dedicated digital display/controllers. From here, two alarm levels, independently adjustable for each sensor, are set via easy push button operation.
  • Alarm relay contacts for each alarm setpoint, at each sample channel
  • 4–20 mA output for each sample channel
  • A common audible (piezoelectric) and visual (strobe) alarm signal, providing an indication if either channel goes into alarm
  • Two remote sample point stations, each provided with the appropriate end-of-line particulate filter, and 50 feet (15.2 meters) of tubing

The monitoring system is housed in a NEMA 4X Fiberglass enclosure, provided with a window.

By the way, you’re not limited to monitoring two points of the same gas. Two different gases can be incorporated into this configuration as well!

 

Options

  • Alternative packaging, including Type X or Type Z purged enclosures and RFI resistant enclosures
  • Enclosure heating and cooling
  • Loss of flow alarm
  • Triple alarm set points
  • Loss of power alarm
  • Auto zero
  • Sensor protection circuit
  • Remote displays

 

Additional Specs

Measuring RangeResolution
0–2000 ppm1 ppm
0–1000 ppm1 ppm
0–500 ppm1 ppm
0–200.0 ppm0.1 ppm
0–100.0 ppm0.1 ppm
0–50.0 ppm0.1 ppm
0–20.0 ppm0.1 ppm
0–5.00 ppm0.01 ppm
0–2.00 ppm0.01 ppm
0–1.00 ppm0.01 ppm
NOTE: Not all measuring ranges are available for all gases. Please refer to specific ordering information, below.

Weight:

70 lb (31.8 kg)

Dimensions:

24″ H x 20″ W x 8.75″ D

(610 x 508 x 203 mm),

exclusive of alarm signals and enclosure mounting feet.

Specifications common to all Interscan gas detection instruments

 

 

Ordering Information:

Two Point LD Series Continuous Gas Monitoring Systems

GAS

MEASURING
RANGE (ppm)

MODEL NO.

Br2
bromine
0–20.0
0–5.00
LD270-20.0m
LD270-5.00m
CO
carbon monoxide
0–2000
0–200.0
0–100.0
0–50.0
LD214-2000m
LD214-200.0m
LD214-100.0m
LD214-50.0m
Cl2
chlorine
0–20.0
0–5.00
LD234-20.0m
LD234-5.00m
ClO2
chlorine dioxide
0–20.0
0–5.00
0–2.00
LD233-20.0m
LD233-5.00m
LD233-2.00m
C2H4
ethylene
0–2000
0–200.0
0–20.0
0–5.00
LD207-2000m
LD207-200.0m
LD207-20.0m
LD207-5.00m
EtO
ethylene oxide
0–50.0
0–20.0
0–5.00
LD220-50.0m
LD220-20.0m
LD220-5.00m
HCHO
formaldehyde
0–20.0
0–2.00
LD216-20.0m
LD216-2.00m
H2NNH2
CH3NHNH2
(CH3)2NNH2
hydrazine(s) ¶
0–20.0
0–2.00
LD218-20.0m
LD218-2.00m
H2
hydrogen
0–2000
0–500
LD202-2000m
LD202-500m
HBr
hydrogen bromide
0–20.0
0–5.00
LD280-20.0m
LD280-5.00m
HCl
hydrogen chloride
0–20.0
0–5.00
LD236-20.0m
LD236-5.00m
HCN
hydrogen cyanide
0–50.0
0–20.0
0–5.00
LD228-50.0m
LD228-20.0m
LD228-5.00m
H2O2
hydrogen peroxide
0–1000
0–200.0
0–50.0
0–5.00
LD209-1000m
LD209-200.0m
LD209-50.0m
LD209-5.00m
H2S
hydrogen sulfide
0–500
0–200.0
0–20.0
0–1.00
LD217-500m
LD217-200.0m
LD217-20.0m
LD217-1.00m
NO
nitric oxide
0–2000
0–200.0
0–20.0
0–5.00
LD254-2000m
LD254-200.0m
LD254-20.0m
LD254-5.00m
NO2
nitrogen dioxide

Also known as N2O4
nitrogen tetroxide
0–50.0
0–20.0
0–5.00
LD215-50.0m
LD215-20.0m
LD215-5.00m
O3
ozone
0–50.0
0–20.0
0–5.00
LD248-50.0m
LD248-20.0m
LD248-5.00m
PrO
propylene oxide
0–50.0
0–20.0
0–5.00
LD232-50.0m
LD232-20.0m
LD232-5.00m
SO2
sulfur dioxide
0–200.0
0–50.0
0–20.0
0–5.00
LD224-200.0m
LD224-50.0m
LD224-20.0m
LD224-5.00m

There is not a separate analyzer available for each of these compounds, and the sensor does not respond equally to all hydrazine species. The analyzer must be calibrated with the specific hydrazine compound of interest. 

Special ranges available on request—The panel meter can be factory programmed to display any desired full scale range, within the measuring capability of the instrument.