Dissolved Oxygen

Dissolved Oxygen Probes, Meters and Accessories

Monitoring Dissolved Oxygen Optimizes Aeration Efficiency in Wastewater Treatment

Dissolved Oxygen Probes, Disolved Oxygen Meters and Accessories from LAR LLC provide a wide range of functionality to match vitually any application or budget.

  • Sensors

  • Controllers

  • Accessories

Dissolved Oxygen Probes from LAR LLC provide a wide range of functionality for virtually any Dissolved Oxygen application. Technologies include: Optical, Amperometric Membrane, and Self-cleaning Exposed Electrode. Meters, mounting hardware, self-cleaning attachments, and replacement sensor-heads are also available, as appropriate to each D.O. probe requirement. Be sure to match your probe with a compatible controller.

423/C/OPT Oxygen and Temperature. Digital Sensor

9700830067
423/C/OPT Oxygen and Temperature. Digital Sensor
Measuring principle Luminescence
Measuring range 0 ... 20 ppm / 0 ... 200% Saturation / 0 ... 45°C
Accuracy ± 0.1 ppm or ± 1%
Response time 90% of the value in less than 60 sec.
Operating temperature 0 ... 60°C Maximum operating pressure 5 bar.
316L Stainless Steel Body
Analog / digital interface RS485 Modbus RTU active
Dimensions (Ø x L) mm. 33.4x 181 (ø x L). IP68 protection.
Complete with 10m cable and connector

 

S423/C/OPT/PVC Oxygen and Temperature. Digital Sensor

9700831067
S423/C/OPT/PVC Oxygen and Temperature. Digital Sensor
Same as S423/C/OPT but with PVC body.

 

S423 C OPT PVC Oxygen optical probe

9700831067
S423 C OPT PVC Oxygen optical probe
9500420019 "S315/P/50 Immersion probe holder for S423/N/OPT
PP body. Complete with terminal flange for electrode protection Dim: ( Ø x l ) 63 x 570 mm.

9500420020 "S315/100 Immersion probe holder for S423/N/OPT
PP body. Complete with terminal flange for electrode protection Dim: ( Ø x l ) 63 x 1070 mm.

9500420021 "S315/150 Immersion probe holder for S423/N/OPT
PP body. Complete with terminal flange for electrode protection Dim: ( Ø x l ) 63 x 1570 mm.

7600430001 "Nozzle/63 for automatic rinsing of electrode x S315 Ø 42 mm.
Stainless Steel body.

1620100700 S332 cable 4 wire + shield. For S423/N/OPT. price x meter

8109000045 S321 Junction box IP 66 complete with terminal board

9400400004 Membrane cap for S423/N/OPT

 

S423 C OPT Stainless Steel Dissolved Oxygen Optical Probe

9700830067
S423 C OPT Stainless Steel Oxygen optical probe
Dissolved Oxygen and Temperature. Optical system by luminescence
Measuring range 0…20ppm / 0…200% Saturation / 0…60°C Accuracy ± 0.1ppm ± 1 %
Response time 90% of the value in less than 60 sec.
Operating temperature 0…60°C Operating pressure 0…5bar.
Material Stainless Steel 316L Protection IP68.
Dimension mm. 25x 146 (ø x l). 7m fixed cable ( other on request)

 

S423 Oxygen & temperature Amperometric sensor

6023000340
S423 Oxygen & temperature Amperometric sensor double electrode (Gold-Silver).
OPTIFLOW membrane IP 68 protection.
Immersed materials on mounted sensor: stainless steel 1.4435, PEEK, Silicone, NBR
Measuring range 0…20ppm / 0…300% Saturation
Working temperature: 0 to 60°C
Pressure: 0 to 4 bar inserted; max. 0.5 bar totally immersed
Minimum flow of the sample: min. 0.03 m/s
Regeneration: not required Maintenance-free.
Dimension Ø x L 12 x 120 mm. Mount: PG 13.5 thread. 5m fixed cable (other lengths on request)

9500420000
S315/50 Immersion probe holder,
PP body. Complete with terminal flange for electrode protection Dim: ( Ø x l ) 42 x 570 mm.

9500420001 "S315/100 Immersion probe holder,
PP body. Complete with terminal flange for electrode protection Dim: ( Ø x l ) 42 x 1070 mm.

9500420002 S315/150 Immersion probe holder, PP body, with terminal flange for electrode protection Dim: (ØxL) 42 x 1570 mm.

7600420001 Nozzle/42 for automatic rinsing of electrode S315 Ø 42 mm. Stainless Steel body.

1623200000 Multipin cable X S423 ( max 15 mt.)

8109000045 S321 Junction box IP 66 complete with terminal board

 

 

Controllers for LAR LLC's Dissolved Oxygen Probes provide local display, data logging, and transmission. Be sure to match compatible systems to get the most from your D.O. Probe.

Series 50 Multi-parameter Controller for pH, D.O., SS or Turbidity

PN: 9730610010
Series 50 Multi-parameter Controller for pH, D.O., SS or Turbidity
50XX Multiparameter Controller Plug & Play unit with automatic sensor recognition, 144x144 wall mount, supports up to 2 sensors with RS 485 digital output
Measuring range determined by sensor
Automatic or manual Temperature Compensation
Graphic display for simultaneous display of: size, temp., analog and digital output
(set point), alarms. Keyboard programming (5 digits).
Function keys for calibration and graphic display of measurement data.
Internal data logger (4 Mbit flash) with ability to display graphical and tabular trends of measures with an indication of the minimum, maximum and average of the period. Four programmable set points (2 for each measure) for range and activation time.
Output for alarm: min/max delay set point, residence time, failure.
Output for programming automatic electrode cleaning interval and duration.
Digital input for activation and inhibition assays washing remotely. Three programmable analog outputs 0/4 to 20mA. Programmable limits within the measurement range of the sensor (ability to combine 2 equivalent measurements to generate third output averaging the two measurements).
PID control function can be activated on analog or digital (frequency or pulse).
Serial port RS485 with MODBUS RTU protocol.
USB master module to download data on USB Flash Drive 2.0
Ability to simulation outputs via keypad.
Technical Specifications:
• LCD Graphic display 128x128 with background illumination
- Programming keypad with 5 keys.
- Input for temp. sensor PT 100 3-or 4-wire (std.) or NTC PT 1000 (on request).
- Nr. 3 Analog Output 0/4 to 20mA max load 500Ω galvanically separated ( 1 KV).
- Nr. 6 digital outputs - Relay with dry contact - 3A at 230Vac
- Nr.1 Serial Output RS 485 MODBUS RTU protocol
active digital input for dry contact
Power supply 90 to 47 to 240VAC 63Hz
ABS housing for wall mounting. Protection IP 66 Size 144x144x122 mm, 5 (D) Weight 1.0 Kg

 

4283 Dissolved Oxygen and Temperature Analyzer. Wall mount 144x144

9710616010
4283 Dissolved Oxygen and Temperature Analyzer. Wall mounting 144x144
Measuring ranges: Dissolved Oxygen 00.0 to 40.0ppm/mg/l. 0 to 200% Saturation
Resolution: 0.1ppm–mg/L – 1% sat.
Accuracy 0.5% f.s.
Temperature: -10 to 130°C
Resolution: 0.1°C
Automatic temperature compensation.
Graphic display to visualize simultaneously: measurement, temperature, analog and digital outputs (set point) condition, alarms.
Internal data logger (16,000 records).
Tabular or graphic stored data display with min/max and average values.
Programming key pad with 5 keys.
Function keys to direct access to the calibration menu and for graphic display of stored measurements.

PID regulation to be set for analog or digital output (PWM or Frequency).
Two digital Outputs for set point, programmable for range and activation time.
Digital output for Alarm: min/max, delay of the set point, residence time (live check), malfunction.
Digital output for: Temperature setpoint or control of electrode rinse cycle (time and interval).
Digital input to be set for: external command of electrode rinsing cycle or for dosing inhibition
0/4 to 20mA primary output with limits that can be programmed within the measurement range.
0/4 to 20mA secondary output programmable for: temperature/meas. repetition/PID function.
RS485 serial output with MODBUS RTU protocol.
Able to simulate the outputs via a keyboard.
Hardware technical features:
Graphic display LCD STN 128x64 back-lighted. 5 keys programming keyboard.
n. 1Input for NTC Temperature sensor
Data logger with Flash memory 4 Mbit ( 16.000 records), Type: f.i.f.o. or filling
n. 2 analog outputs 0/4÷20mA 500Ohm galvanically isolated
n. 4 digital outputs– Dry contact Relay
n. 1 digital input - Active and already supplied
n. 1 RS 485 serial output MODBUS protocol
Power supply 100-240Vac 47÷63Hz
ABS container for panel mount. IP66 (NEMA4X) Mechanical protection
Dim. mm. 144x144x122,5 (p) Weight Kg. 0.9

 

4283 Dissolved Oxygen and Temperature Analyzer. Panel mounting 144x144

9710616000
4283 Dissolved Oxygen and Temperature Analyzer. Panel mounting 144x144
Same technical features as for 4283. Grey ABS case for panel mounting.
Dim. mm 144x144x61.0 (p) Weight Kg. 0.9

 

4283 Dissolved Oxygen and Temperature Analyzer. Panel mounting 96 x96

9710616050
4283 Dissolved Oxygen and Temperature Analyzer. Panel mounting 96 x96
Same technical features as for 4283 but LCD STN 57x30 back-lighted graphic display.
Black ABS case for panel mounting. Mechanical Protection IP 20. Dim. mm 96x96x123 (p) Weight Kg. 0.9

9400970000 Internal USB port to download stored data via USB flash memory

9400970001 Internal Supply board 24V ac/dc

 

3582 Dissolved Oxygen Analyzer Wall mounting 144x144

9710610010
3582 Dissolved Oxygen Analyzer Wall mounting 144x144
For Amperometric Sensor S423 Only
Measuring ranges:
Dissolved Oxygen 00.0 to 40.0ppm/mg/l.
0 to 200% Saturation
Resolution: 0.1ppm–mg/lt – 1% sat.
Accuracy 0.5% f.s.
Temperature: -10 to 130°C
Resolution: 0.1°C
Automatic temperature compensation . Graphic display to visualise simultaneously: measurement,
temperature, analog and digital outputs condition, alarms. Programming key pad with 4 keys. Function
key to direct access to calibration menu.
PID regulation to be set on digital output (PWM or Frequency ).
Two digital Outputs to be set for set point, with programming of working range (hysteresis/direction) as well as of the activation time.
Digital output for Alarm: minimum, maximum, delay of the set point, residence time (live check), malfunction.
Digital output to control the rinsing cycle of the electrode with time and interval programming.
Digital input to be set for: external command of electrode rinsing cycle or for dosing inhibition
0/4 to 20mA primary output with limits that can be programmed within the measurement range.
Able to simulate the outputs via a keyboard.
Hardware technical features:
Graphic display LCD STN 128x64 back-lighted. 4 keys programming keyboard.
n. 1Input for NTC Temperature sensor.
n. 1 analog output 0/4 to 20mA 500Ohm galvanically isolated
n. 4 digital outputs– Dry contact Relay
n. 1 digital input - Active and already supplied
n. 1 RS 485 serial output
Power supply 100-240Vac 47 to 63Hz
ABS container for panel mounting. Mechanical protection IP66 Dim. mm. 144x144x122,5 (p) Weight Kg. 0.9

 

3582 Dissolved Oxygen Analyzer. Panel mounting 144x144

9710610000
3582 Dissolved Oxygen Analyzer. Panel mounting 144x144
Same technical features as for 3582. Grey ABS case for panel mounting.
Dim. mm 144x144x61,0 (p) Weight Kg. 0.9

 

3582 Dissolved Oxygen Analyzer. Panel mounting 96 x96

9700610050
3582 Dissolved Oxygen Analyzer. Panel mounting 96 x96
Same technical features as 3582 but LCD STN 57x30 back-lighted graphic display.
Black ABS case for panel mounting. Mechanical Protection IP 20. Dim. mm 96x96x123 (p) Weight Kg. 0.9
Amperometric D.O. Sensor and accessories

 

Accessories for LAR LLC's Dissolved Oxygen Probes provides flexibility in mounting options, and extend system lifespan with replacement membrane caps and self-cleaning attachments.

Accessories for S423 Optical Dissolved Oxygen Sensors

9500420019
S315/O/50 Immersion probe holder for S423/C/OPT, S401/406DG and S401/406DF
PP body. Complete with terminal flange for electrode protection Dim: ( Ø x l ) 63 x 570 mm.

9500420020
S315/O/100 Immersion probe holder for S423/C/OPT, S401/406DG and S401/406DF
PP body. Complete with terminal flange for electrode protection Dim: ( Ø x l ) 63 x 1070 mm.

9500420021
S315/O/150 Immersion probe holder for S423/C/OPT, S401/406DG and S401/406DF
PP body. Complete with terminal flange for electrode protection Dim: ( Ø x l ) 63 x 1570 mm.

7600430001
Nozzle/63 for automatic rinsing of electrode x S315 Ø 42 mm.
Stainless Steel body.