AP200 CO2/H2O大气廓线系统
完整的集成的系统
可预设程序，低功耗
气象 应用支持 水资源 应用支持 能源 应用支持 湍流通量 应用支持 基础结构/工业设施 应用支持 土壤 应用支持

概览

AP200是完整的集成的系统，测量CO2 和H2O 大气廓线系统。通过8个采样管测量二氧化碳(CO2)和水汽(H2O) 浓度，这些采样管通常位于塔的不同高度处，形成垂直剖面。AP200 常与涡度系统组合，测量储存项，为表面气体交换提供更完整的测量。

优势与特点

  • Fully integrated system
  • Requires only 13 W (average at 25°C and 12 Vdc)
  • Contains a Campbell Scientific CR1000X Measurement and Control Datalogger
  • Automatically performs CO2 zero and span
  • Automated temperature and pressure control
  • Data logger program included

图像

<dl><dt>Typical AP200 Installation</dt> <dd>1-27693 Heated Sample Intake Assemblies (from 4 up to 8)</dd> <dd>2-9922 20 AWG Power Cable</dd> <dd>3-28547 AP200 System Enclosure</dd> <dd>4-15702 Tubing</dd> <dd>5-Zero/Span Tanks and Regulators (not included)</dd> <dd>6-Instrument Tower (sold separately)</dd></dl>

技术说明

测量

主要参数

  • CO2在每个采样管的浓度
  • H2O在每个采样管的浓度
  • 系统诊断

其它参数

  • 气样流速
  • 样品室压力
  • 样品室温度
  • 其它控制变量

产品规格

System Enclosure
Operating Temperature -30° to +45°C
Power Requirements
  • 10 to 16 Vdc (voltage)
  • 13 W (average power at 25°C)
    Average power varies from 12.5 W above +35°C to 22.5 W at -30°C.
  • 3.75 A (45 W) maximum power (cold startup)
Dimensions 52.1 x 44.5 x 29.7 cm (20.5 x 17.5 x 11.7 in.)
Weight
  • 15.9 kg (35 lb) for AP200 base model
  • 1 kg (2.3 lb) for LI-850
  • 272 g (10 oz) for CR1000KD
  • 154 g (5.4 oz) for CFM100/NL116

Pump Module
Pump Type Dual-head diaphragm pump with a brushless dc motor
Mounting Mounted in an insulated, temperature-controlled box inside system enclosure
Control Pumping speed is automatically controlled to maintain the pump inlet pressure at the set point
Maximum Pumping Speed 9.0 liters per minute (LPM)
Pressure Sensor Range 15.0 to 115.0 kPa
Heater 8.0 W (turns on/off at 2°C)
Warm-up Time ~50 min (from -30° to +2°C)
Fan 0.7 W (turns on at 50°C and off at 45°C)

Valve Manifold
Mounting Mounted inside system enclosure
Inlets Eight air sample inlets plus one inlet for zero, one inlet for CO2 span, and one inlet for H2O span
Connections 0.25-in Swagelok
Mass Flow Sensor 0 to 1.0 standard liters per minute (SLPM)
Heater 8.0 W (turns on/off at 5°C)
Warm-up Time ~20 min (from -30° to +4°C)
Fan 0.7 W (turns on at 45°C and off at 43°C)

Intake Assembly
Filter 1.0-in diameter, sintered stainless-steel disk filter, 10-micron pore size
Orifice Heater 2 kohm (0.07 W at 12 Vdc)
Mixing Volume 750 mL
Sample Connection 0.25 in. Swagelok
Number of Connections for Heater Cable Entry Seals 3 (1 in, 2 out)
Cable Diameter for Heater Cable Entry Seals 2.8 to 6.6 mm (0.11 to 0.26 in.)
Wire Diameter for Heater Cable Screw Terminals 26 to 12 AWG
Wire Stripping Length for Heater Cable Screw Terminals 5.0 mm (0.2 in.)
Screw Tightening Torque for Heater Cable Screw Terminals 0.4 N•m
Orifice Inside Diameter 0.178 mm (0.007 in.)
Dimensions 31 x 12.5 x 19 cm (12 x 5 x 7.5 in.)
Weight 1.4 kg (3.1 lb)

下载

AP200 CR1000 Program v.2.01 (31.3 KB) 12-01-2021

AP200 CR1000(X) Program.

Compatible with the LI-850.

Note: For those with the LI-840 contact Campbell Scientific for compatible code.

查看修订历史

Device Configuration Utility v.2.32.01 (47.7 MB) 15-04-2025

A software utility used to download operating systems and set up Campbell Scientific hardware. Also will update PakBus Graph and the Network Planner if they have been installed previously by another Campbell Scientific software package.

Supported Operating Systems:

Windows 11 or 10 (Both 32 and 64 bit)

查看修订历史

常见问题解答

AP200: 53

展开全部收起全部

  1. Is it possible to order an AP200 with just two intake assemblies?
    No. The AP200 requires flow from at least four intake assemblies for smooth operation of the pump.
  2. How often should zero/span be performed on an AP200?

    The AP200 supports automatic zero/span from once per day to once each averaging period (typically 30 minutes). A zero/span once a day will mitigate zero/span drift caused by seasonal temperature changes and long-term drift in the IRGA. More frequent zero/span (hourly) will also correct for any small drift associated with 24 hour temperature swings.

  3. The IRGA operates at reduced pressure in the AP200. Is it OK to do a zero/span at ambient pressure?

    Yes. The LI-840A has active pressure compensation that corrects its measurements for sample cell pressures from 15 to 115 kPa.

  4. How long does it take for the reading to stabilize during an H2O span?
    If the dewpoint generator is already stable, and a short piece of Bevaline tubing is used to connect it to the AP200, then it should only take a few minutes for the H2O reading to stabilize.
  5. Does the tubing for an AP200 have to be bought from Campbell Scientific?

    No. The tubing can be purchased from another vendor. When making a purchase, remember that Campbell Scientific recommends Synflex 1300, ¼ in. outer diameter (OD) tubing for the AP200.

  6. Is there a model of the AP200 with 10 intake assemblies?
    No. Because the AP200 has only eight inlets for air samples, it can only operate with a maximum of eight intake assemblies.
  7. If greater precision than what the LI-840A can provide is desired, can another analyzer, such as the LI-7000, be used instead?
    No. The AP200 is designed to work only with an LI-840 or an LI-840A.
  8. What maintenance does the IRGA require?

    The LI-840A does not require any routine maintenance if it is used as described in the AP200 and LI-840A manuals.

  9. Why is the AP200 not able to do an automated H2O span?

    A dewpoint generator is used as an H2O standard. Dewpoint generators are laboratory instruments and are not suitable for long-term deployment in the field.

  10. Why does the AP200 system use so much power at lower temperatures?

    The LI-840A uses a heater to maintain its sample cell at +50°C. Therefore, it consumes a lot more power at lower temperatures. Below 0°C, the valve heater also requires some power to keep the valves warm.

访问常见问题解答资料库

案例研究

china: flux cooperation
China: Flux Cooperation
This case study discusses the integration of CPEC310 and AP200 systems to explore the theories......阅读更多
检索所有案例