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Tengine Online 20.00mg/L Automatic Luminescent Dissolved Oxygen Analyzer / Meter
- LDO10AC
1. Specifications
Performance characteristics | |
Measuring Range | 0.00~20.00mg/L, or 0.00~20.00ppm, 0 to 200% saturation |
Resolution | 0.01mg/L,0.01ppm |
Accuracy | ±0.1ppm,±0.1mg/L |
Sensitivity | ±0.05% of span |
Response time | 90%<30s, 95%<90s, at 20ºC |
Temperature compensation | automatic (NTC30KΩ) |
Calibration | Factory calibrated, also can be calibrated by customer on site |
Display | LCD displays data including date, time, measurement value, trendline, etc., English menu |
Data storage | Auto-save function(Automatic Data Storage for up to 10 years,), power-off data protection |
Outputs | |
Analog Outputs | Two isolated 0/4-20 mA output( maximum load 800 ohms), optional selection of 3.8mA or 21mA(under the condition of malfunction) |
Relay outputs | 3 Relays with programmable hysteresis, alarm or timer function optional |
Relay capacity | 2A, 250VAC |
Digital Communication | MODBUS RS232/RS485,Profibus DP is optional |
Power supply | |
AC power supply | 85~265 VAC, 50Hz/60Hz |
DC power supply | 24 VDC ±10% |
Physical parameters | |
Dimension of Transmitter | 270×205×100mm(W×H×D) (10.6*8*3.9 in.) |
Dimension of Sensor | Φ45×118mm (1.8*4.5 in.) |
Materials | --Transmitter: PC --Sensor: 316L stainless steel |
Process connection of sensor | 1 inch cone male thread |
Environmental conditions | |
Ingress protection | --IP66 (transmitter) --IP68 (Sensor) |
Operating Temperature | --Transmitter: -20~60℃ --Sensor: 0~50℃ |
Ambient Relative Humidity | 0 to 95%, non-condensing |
Operating Pressure | ≤7.5Bar |
2. Application
Continuously monitor DO in municipal and industrial wastewater treatment process
• Sewage plant
Aeration tank,collection well,aerobic digestion tank,outlet
• Power plant
Water/wastewater treatment process
• Surface water
Rivers,Lakes/Streams,ocean
• Aquaculture
Sea cages, land-based pond
• Other industries
Food industry,Chemical industry
3. Features and Benefits
• Based on the innovative principle utilizing fluorescence to measure dissolved oxygen, the sensor does not require frequent replacement of membranes and needs low maintenance.
• The Measurement does not consume oxygen, stir or flow is not required, and unaffected by H2S,pH, K+, Na+, Mg2+, Ca2+, NH4+, Al3+, Pb2+, Cd2+, Zn2+, Cr, Fe2+, Fe3+, Mn2+, Cu2+, Ni2+, Co2+, NO3-, SO4-2, S-2,
PO43+, Cl-.
• Digital sensor has good anti-interference performance and high stability, and the cable length is available in hundreds of meters.
• Connections between the sensor(s) and the transmitter are “plug and play”, and multi-channel transmitter operates either 1 or 2 sensors.
• Modbus RS485/RS232 or Profibus DP network connection for data transmission is Optional
• The menu is available in Chinese or English.
• 3 Relays with programmable hysteresis povide high-limit alarm, low-limit alarm or timer.
• A built-in data logger with the capacity to store data for up to
10 years collects measurement data at user selectable intervals.
4. Ordering Information
Ordering Information | ||||||
Transmitter Selection | ||||||
Channel number | Signal output | Power version | ||||
LDO | ||||||
code | meaning | code | meaning | code | meaning | |
1 | Single channel | 0 | 4~20mA | AC | 220VAC | |
2 | Dual channel | 1 | RS 485(Modbus) | DC | 24VDC | |
2 | RS 232(Modbus) | |||||
3 | Profibus DP | |||||
Example: LDO10AC, single channel dissolved oxygen transmitter, output 4~20mA, 220V AC Power supply. | ||||||
Sensor Selection | ||||||
Install mode | Cable length | |||||
LDO-S | ||||||
code | meaning | code | Meaning | |||
0 | Immersion installation | C10 | 10m cable | |||
CXX | XXm cable | |||||
Example: LDO-S0C10, a LDO sensor, immersion-typed install , with 10m cable. |
(3) Accessories
FA0000: Immersion mounting bracket, stainless steel
FA0001: Immersion mounting bracket, PVC
FA0010: Insertion mounting bracket, stainless steel, with DN50 stainless steel cut-off ball valve
FA0020: Stainless steel floating ball mounting bracket
FA0021: PVC floating-board mounting bracket
FA0031: Circulation mounting accessory, PVC
FA0900: Stainless steel adapter
FA0901: PVC adapter
FA0800: Instrument protective housing, stainless steel
FA0810: Instrument protective housing, stainless steel, with heater unit