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RKI Instruments, GD-K7D2, Sample Drawing Sensor/Transmitter for Toxic Gases
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From RKI Instruments,
The GD-K7D2, RKI’s workhorse sample draw assembly for use with a wide variety of electrochemical sensors for toxic gas detection. Designed for simple servicing, allowing the sensor or to 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.
Features Include:
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Built-in sampling pump
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Complete sensor and pump in one housing
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Quick installation wall brackets
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Easy sensor and pump removal for maintenance
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Front removal cover
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Built-in flow indicator and low flow alarm
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Quick response sensors
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Over 30 sensors to choose from
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Built-in battery for bias of sensors
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Optional NEMA 4X housing available
Applications Include:
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Semiconductor
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Chemical Processing
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Laboratory
- Manufacturing
Specifications
| 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) |
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Self Diagnosistic Function |
Low flow relay contact |
| Operating Conditions | 0 - 40•C, 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 us for gases or ranges not listed.
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Ammonia (NH3)
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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 Peroxide (H2O2) | 0 - 3.00 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 |
* Factory specifications are subject to change without notice.
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