RD3000 (Output Display) + NA1000D II Sensor
RD-3000HS multi-channel hydrogen leakage monitor system consists of monitor host and sensor unit. Itâ€™s used to monitor the content of hydrogen within the lower limit of hydrogen-cooled generator, with a maximum 16 sensing units and centralized control for multi-point.
This system adopts high-performance sensors and the power is supplied by the monitor host. It transforms the gas concentration signals into the electrical signals which would be sent to the host. The data of multi-channel hydrogen concentration and alarm shall be directly displayed on large-screen LCD. When the concentration of hydrogen reaches the preset alarm value, the system will send an alarm signal reminding staff to take security measures timely for safety production.
|Measuring range:||0~4.00% (0~100%LEL)|
|Working voltage:||24V DC Power 1W|
|The RD-3000 Monitor Host|
|Display:color displayed:||TFT 256 color (LCD)|
|Analog input:||1~8 ways, two-wire, 4~20mA transmitter (max 16 channels)|
|Voltage power consumption:||24V≤0.48W|
|Connection method:||2-core shielded cable|
|Analog output:||1~8 roads, two-wire, 4~20mA transmitter (max 16 channels)|
|Connection methods:||2-conductor shielded cable|
|Contact form:||Normally open|
|Output mode:||1~8 branch channel alarm, 1 master channel alarm (max 16 channels)|
|Relay contact capacity:||1A, 24V DC or 1A, 120V AC|
|Alarm memory:||8000 pieces of alarm messages|
|Working voltage:||110V AC~265V AC, 40~63Hz,Power 65W|
|Installation way:||Wall hanging 440mm * 330mm * 130mm (L*W*H)|
|Weight:||About 9.5 kg|
Installation position: closed bus, internal water tank, the empty side of oil return pipe at steam end and excitation end or water return pipe of cooler and so on.
Installation option one: (8 installation points)
1. Closed bus: phase A, phase B, phase C and 2 neutral points. (5 points)
2. Internal water tank. (1 point)
3. The oil return pipe of sealing oil empty side at gas end and exterior end. (2 points) Note: If there is a reserved hole at the end cover of gas end and exterior end, it can be installed in the reserved hole.
4. Water return pipe of cooler(one point)
Attention: If option one and two are both not suitable for the scene, users can choose 8 installation points freely according to the practical situation.
The installation of the sensor detecting points:
(1)The detecting point on the closed bus:
We suggest that installed on the generator bus platform and the sensors connected to the control unit by a two-core screened cable. The detecting points of air chamber and enclosed bus case should be installed outside of the case platform which is convenient and safe to dismantle during the calibration. As shown in figure 1:
Figure 1: Schematic diagram of the closed bus installation and detection (A/B/C and two neutral points)
(2)The detecting point of the internal water tank:
The detecting point is installed on the top of the tank. The sampling system supplied by the manufacture is connected to the top of tank by screwing or welding. As shown in figure 2:
Figure 2: Schematic diagram of the internal water tank installation.
(3)The detecting point of the sealing oil return line:
We suggest that installed on the horizontal section of the oil return pipe on the empty side of steam end and excitation end. The double nipple supplied by the manufacture should be welded on. Installation direction should be vertically upwards. The installation position of the sealing oil return line is shown in figure 3. If there is a reserved hole at the end cover of steam end and excitation end., it can be installed in the reserved hole. The installation position is shown in figure 4. The convenience of dismantling during the maintenance of probe should be considered when you choose the installation positions.
Figure 3: Schematic diagram of the empty side of sealing oil return pipe steam end andÂ excitation end installation and detection.
Figure 5: Schematic diagram of hydrogen cooler water return pipe installation and detection.
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