Conductivity Monitor & Transmitter – FLS M9.05
The FLS M9.05 from Petron Thermoplast FZ LLC is a powerful conductivity monitoring and transmitting solution designed for a wide range of applications, including ultrapure water processes. Its 4-inch full-graphic multicolor display with bright backlighting ensures clear visibility of measured values and status indicators, even from long distances.
The intuitive tutorial software enables quick, error-free setup of all parameters. Measured values can be displayed as resistivity or TDS, depending on application requirements. The freely adjustable cell constant makes the M9.05 compatible with all types of 2-cell conductivity probes.
Equipped with two 4–20 mA outputs, the device can transmit conductivity and temperature values to external systems. A versatile combination of digital outputs supports fully customizable process control setups. The rear USB port provides easy software upgrades, offering both standard and tailor-made customization services.
Conductivity Monitor & Transmitter – FLS M9.05
Key Features Of Conductivity Monitor & Transmitter – FLS M9.05
- Wide full graphic display
- Multicolor backlight visualization
- Help on board
- USB port for software upgrading
- UPW temperature compensation
- Cell constant settable freely
- Values in conductivity, resistivity, TDS
- Analog output for temperature remoting
- Mechanical relay for external device control
- Solid State Relays for programmable alarms

Technical Details of Conductivity Monitor & Transmitter – FLS M9.05
Feature | Specification |
---|---|
Associated Sensors | – Case: ABS – Display window: PC – Panel & wall gasket: silicone rubber – Keypad: 5-button silicone rubber |
Display | LC full graphic display |
Backlight Version | 3-colours |
Backlight Activation | User adjustable with 5 levels of timing |
Update Rate | 1 second |
Enclosure | IP65 front |
Conductivity Input Range | 0.055–200000 µS/cm (depending on cell constant applied) |
Conductivity Measurement Accuracy | ± 2.0% of reading value |
Temperature Input Range | -50 to 150°C (-58 to 302°F) (Pt100-Pt1000) |
Temperature Measurement Resolution | 0.1°C/°F (Pt1000), 0.5°C/°F (Pt100) |
Supply Voltage | 12 to 24 VDC ± 10% regulated |
Max Power Consumption | <300mA |
Current Output | 4–20 mA, isolated, fully adjustable and reversible |
Max Loop Impedance | 800 Ω @ 24 VDC 250 Ω @ 12 VDC |
2x Solid State Relay Output | – Selectable as: ON-OFF, Proportional frequency, Proportional Pulse, Timed Pulse, Off – Optically isolated, 50 mA MAX sink, 24 VDC MAX pull-up voltage – Max pulse/min: 300 – Hysteresis: User selectable |
2x Relay Output | – Selectable as: ON-OFF, Proportional frequency, Proportional Pulse, Timed Pulse, Off – Mechanical SPDT contact – Expected mechanical life: 10⁷ operations – Expected electrical life: 10⁵ N.O. / N.C. switching 5A/240VAC – Max pulse/min: 60 – Hysteresis: User selectable |
Operating Temperature | -10 to +70°C (+14 to +158°F) |
Storage Temperature | -30 to +80°C (-22 to +176°F) |
Relative Humidity | 0 to 95% non-condensing |
Standard | ISO 9001 Manufactured under ISO 9001 ISO 14001 Manufactured under ISO 14001 CE Compliant RoHS Compliant EAC Certified |

Part No. | Description / Name | Power supply | Wire power Technology | Sensor Input | Output | Weight (gr.) |
---|---|---|---|---|---|---|
M9.05.P1 | Panel mount Conductivity monitor | 12 - 24 VDC | 3/4 wire | Conductivity | 2*(4-20mA), 2*(S.S.R.), 2*(mech. relay) | 550 |
M9.05.W1 | Wall mount Conductivity monitor | 12 - 24 VDC | 3/4 wire | Conductivity | 2*(4-20mA), 2*(S.S.R.), 2*(mech. relay) | 650 |
M9.05.W2 | Wall mount Conductivity monitor | 110 - 230 VAC | 3/4 wire | Conductivity | 2*(4-20mA), 2*(S.S.R.), 2*(mech. relay) | 750 |
Conductivity Monitor & Transmitter – FLS M9.05
Technical Specifications of Conductivity Monitor & Transmitter – FLS M9.05

Custom Product Manufacturing Available
If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.