Humidity / Co2 Meter – GCH-2018

The GCH-2018 Air Quality Meter provides accurate and reliable measurements of carbon dioxide (CO2), humidity, temperature, and dew point, making it an essential tool for various industrial, environmental, and HVAC applications.

Exceptional Features of the GCH-2018:

1. Multi-Function Capability: Measures CO2, humidity, temperature, and dew point, providing comprehensive air quality analysis for different measurement needs.
2. High Accuracy and Repeatability: Utilizes NDIR (Non-Dispersive Infrared) method for CO2 measurement, offering high repeatability and accuracy.
3. User-Friendly Design: Equipped with a large S-TN LCD display for easy readout, data hold function, and records maximum and minimum readings with recall.
4. Advanced Connectivity: Includes RS232/USB computer interface for data output, enhancing data management and integration with other systems.
5. Durable and Portable: Constructed with a heavy-duty and compact housing, along with a hard carrying case for easy transportation and operation.

Specifications

Circuit: Custom one-chip of microprocessor LSI circuit.
Display: LCD size: 52 mm x 38 mm, dual function LCD display.
Measurement: CO2 (Carbon dioxide), Temp., Humidity, Dew point, Temp.
Sensor structure: /
Datalogger Sampling Time Setting range: /
Data error no.: /
Memory Card: /
Data Hold: Freeze the display reading.
Memory Recall: Maximum & Minimum value.
Sampling Time of Display: Approx. 1 second.
Data Output: RS 232/USB PC serial interface., Connect the optional RS232 cable
Data Output: UPCB-02 will get the RS232 plug., Connect the optional USB cable
Data Output: USB-01 will get the USB plug
Power Supply: DC 1.5 V battery (UM3, AA) x 6 PCs, or equivalent.
Power Current: CO2 measurement
Power Current: Approx. DC 9.6 mA for 90% period.
Power Current: Approx. DC 128 mA for 10% period.
Power Current: Humidity measurement
Power Current: Approx. DC 5.6 mA.
Advanced setting: /
Operating Temperature: 0 to 50℃.
Operating Humidity: Main instrument: Less than 85% R.H.
Operating Humidity: C02 probe: Less than 85% R.H.
Operating Humidity: Humidity probe: 0 to 95 %RH.
Weight: Main instrument: 372 g/0.82 LB. @ Battery is included.
Weight: CO2 probe: 158 g/0.35 LB.
Weight: Humidity probe: 82 g/0.18 LB.
Dimension: Main instrument: 173 x 68 x 42 mm(7.9 x 2.7x 1.2 inch)
Dimension: CO2 Probe: 185 x 38 x 26 mm
Dimension: Humidity Sensor Probe: 200 x 23 x 19 mm
Accessories Included: Instruction manual: 1 PC
Accessories Included: CO2 probe: 1 PC
Accessories Included: Humidity probe: 1 PC
Accessories Included: Hard Carrying case: 1 PC
Optional Accessories: ACV to DC 9V adapter
Optional Accessories: RS232 cable, UPCB-02
Optional Accessories: USB cable, USB-01
Optional Accessories: Data Acquisition software, SW-U801-WIN

Technical Specifications:

Display:
Type: Large S-TN LCD
Size: 52 mm x 38 mm

Measurement Functions:
CO2 (Carbon Dioxide):
Range: 0 to 4,000 ppm
Resolution: 1 ppm
Accuracy: ±40 ppm (≤1,000 ppm), ±(50 ppm + 3% of reading) (1,000-3,000 ppm), reference only (>3,000 ppm)
Response Time: <2 min (typically for 63% of reading value)

Humidity:
Range: 10 to 95% RH
Resolution: 0.1% RH
Accuracy: ±3% RH (70% RH), ±(3% reading + 1% RH) (≥70% RH)
Response Time: 10 to 30 seconds (typically for 85% of reading value)

Temperature:
Range: 0 to 50℃, 32 to 122℉
Resolution: 0.1℃
Accuracy: ±0.8℃, ±1.5℉
Automatic Temperature Compensation

Dew Point:
Range: -25.3 to 48.9℃
Resolution: 0.1℃
Accuracy: Calculated from humidity/temperature measurements

Power Supply:
DC 1.5V battery (UM3, AA) x 6 PCs or equivalent

Power Consumption:
CO2 measurement: Approx. DC 9.6 mA for 90% period, Approx. DC 128 mA for 10% period
Humidity measurement: Approx. DC 5.6 mA

Operating Environment:
Temperature: 0 to 50℃
Humidity: Less than 85% RH

Dimensions:
Main Instrument: 173 x 68 x 42 mm (7.9 x 2.7 x 1.2 inches)
CO2 Probe: 185 x 38 x 26 mm
Humidity Sensor Probe: 200 x 23 x 19 mm

Weight:
Main Instrument: 372 g (0.82 lb, including battery)
CO2 Probe: 158 g (0.35 lb)
Humidity Probe: 82 g (0.18 lb)

Accessories Included:
Instruction Manual: 1 PC
CO2 Probe: 1 PC
Humidity Probe: 1 PC
Hard Carrying Case: 1 PC

Optional Accessories:
AC to DC 9V Adapter
RS232 Cable (UPCB-02)
USB Cable (USB-01)
Data Acquisition Software (SW-U801-WIN)

Advanced Features:
Microprocessor Circuit: Ensures high accuracy and reliability.
Multiple Measurement Functions: Provides flexibility for various air quality parameters.
Auto/Manual Power Off: Saves battery life with auto shut off feature.
RS232/USB Interface: Enhances data management and integration with computer systems.
Alarm Setting: Alerts with a beeper sound for user-defined CO2 thresholds.
Memory Recall: Stores maximum and minimum values for easy reference.

Invest in the GCH-2018 Air Quality Meter for precise and reliable air quality measurements, ensuring high performance and versatility in various industrial, environmental, and HVAC applications.