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Home | Fixed Systems | GD-K7D2 Series

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Sample-Draw Sensor/Transmitter GD-K7D2 Series

Features
  • Built-in sampling pump
  • Complete sensor and pump in one housing
  • Quick installation wall brackets
  • Easy sensor and pump removal for maintenance
  • Front removal cover
  • Built-in flow indicator and low flow alarm
  • Quick response sensors
  • Over 30 sensors to choose from
  • Built-in battery for bias of sensors
  • Optional NEMA 4X housing available
Applications
  • Semiconductor
  • Chemical Processing
  • Laboratory
  • Manufacturing


The GD-K7D2 is RKI’s workhorse sample draw assembly for use with a wide variety of electrochemical sensors for toxic gas detection. It is designed for simple servicing in that the sensor and pump can be easily replaced in less than one minute each. The GD-K7D2 is normally supplied with a 115 VAC pump, which requires local AC power, and the sensor signal output is 4-20 mA (24 VDC, 2 wire loop). A 24 VDC pump is also available, in which the head uses a 3 wire connection to a controller or PLC. The compact design of the unit requires minimum mounting space and the front removal cover allows for installation and ease of service in tight spaces. Easy to install, operate, and maintain, the GD-K7D2 is RKI’s most popular sample draw head for toxic gases.


Detection Principle Electrochemical cell
Sampling Method Sample drawing type
Sample Flow Rate 0.5 lpm
Signal
Transmission
Analog transmission (4-20 mA)
Two wire digital transmission
Alarm Response Time Approximately 30 seconds when exposed to gas concentration of 1.6 times alarm level for most gases (Same as T60)
Self Diagnosistic
Function
Low flow relay contact
Operating Conditions 0 - 40C, 30 - 85% R. H.
Power Requirements 24 VDC or 115 VAC versions available
Applicable Cable Shielded cable 3C, 1.25 sq (18 gauge) for power
Shielded twisted one pair cable, 1.25 sq (18 gauge) for signal
Enclosure Wall mounting, non-explosion proof
Dimensions 2.75" (W) x 6.45" (H) x 6.0" (D), approximately 4 lbs
70 mm (W) x 164 mm (H) x 153 mm (D), approximately 1.8 kg


Partial List Of Detectable Gases
Many other gases or ranges available. Contact RKI for gases or ranges not listed
Ammonia (NH3)
0 - 75.0 ppm
Arsine (AsH3 ) 0 - 0.20 ppm
Boron Trichloride (BCl3) 0 - 15.0 ppm
Carbon Monoxide (CO) 0 - 300 ppm
Chlorine (Cl2) 0 - 3.0 ppm
Chlorine Dioxide (ClO2) 0 - 1.00 ppm
Chlorine Trifluoride (ClF3) 0 - 1.00 ppm
Diborane (B2H6) 0 - 0.3 ppm
Fluorine (F2) 0 - 6.0 ppm
Hydrogen Chloride (HCl) 0 - 15.0 ppm
Hydrogen Fluoride (HF) 0 - 9.0 ppm
Hydrogen Sulfide (H2S) 0 -100.0 ppm
Nitric Oxide (NO) 0 -100.0 ppm
Nitrogen Dioxide (NO2) 0 - 15.0 ppm
Ozone (O3) 0 - 1.0 ppm
Phosphine (PH3) 0 - 1.0 ppm
Silane (SiH4) 0 - 15.0 ppm
Sulfur Dioxide (SO2) 0 - 30.0 ppm

Specifications subject to change without notice.
Made in the USA

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