Dual-Parameter pH/ORP And Flow Monitor And Transmitter – FLS M9.08
The FLS M9.08 Dual Monitor is an advanced device that integrates pH/ORP and flow measurements into one unit, ensuring high accuracy and efficiency in process monitoring. It features a large 4” full graphic multicolor display with backlight, allowing clear visibility of measured values and system status even from a distance. An intuitive tutorial software enables quick, mistake-proof setup of all parameters, while multiple calibration options ensure flexibility for different applications. Each measurement has a dedicated 4-20mA output for reliable data transmission to external devices. Customizable digital outputs allow seamless process control, and the rear USB port provides simple software upgrades. With robust performance and versatile configuration, the M9.08 is the ideal solution for modern industrial monitoring needs.
Dual-Parameter pH/ORP And Flow Monitor And Transmitter – FLS M9.08
Key Features Of Dual-Parameter pH/ORP And Flow Monitor And Transmitter – FLS M9.08
- Wide graphic display
- Multicolor backlight visualization
- Help on board
- Simultaneous measurement of pH/ORP and flow
- Intuitive calibration procedures
- Mechanical relay for external device control
- Solid State Relays for programmable alarms
- Multi languages menu
- USB port for software upgrading

Technical Details of Dual-Parameter pH/ORP And Flow Monitor And Transmitter – FLS M9.08
Specification | Details |
---|---|
Associated sensors | FLS pH/ORP sensors & FLS hall effect flow sensors with frequency output or FLS F6.60 family sensors |
Materials | case: ABS; display window: PC; panel & wall gasket: silicone rubber; keypad: 5-button silicone rubber |
Display | backlight version: 3-colours; backlight activation: User adjustable with 5 levels of timing |
Update rate | 1 second |
Enclosure | IP65 front |
pH input range | -2÷16pH (according to the pH electrode applied) |
pH measurement resolution | ± 0.01 pH |
ORP input range | -2000÷ +2000mV (according to the ORP probe applied) |
ORP measurement resolution | ± 1 mV |
Temperature input range | -50÷150°C (-58÷302°F) (with Pt100-Pt1000) |
Temperature measurement resolution | 0.1°C/°F (Pt1000); 0.5°C/°F (Pt100) |
Flow input range (frequency) | 0÷1500Hz |
Flow input accuracy (frequency) | 0.5% |
Supply Voltage | 12 to 24 VDC ± 10% regulated |
Max Power Consumption | <300mA |
FLS hall effect flow sensor power | 5 VDC @ < 20 mA |
Protection | optically isolated from current loop, short circuit protected |
Protection | optically isolated from current loop, short circuit protected |
Current Output | 2* current output; 4-20 mA, isolated, fully adjustable and reversible; max loop impedance: 1000 Ω @ 24 VDC |
Solid State Relay Output | 2* output: (Flow) user selectable as MIN alarm, MAX alarm, Pulse Out, Window alarm, Off; (pH/ORP) user selectable as ON-OFF, Proportional frequency output, Timed Pulse, Off; optically isolated, 50 mA MAX sink, 24 VDC MAX pull-up voltage; max pulse/min: 300; hysteresis: user selectable |
Relay Output | 2* output: (Flow) user selectable as MIN alarm, MAX alarm, Pulse Out, Window alarm, Off; (pH/ORP) user selectable as ON-OFF, Proportional frequency output, Timed Pulse, Off; mechanical SPDT contact; expected mechanical life (min. operations): 10⁷; expected electrical life (min. operations): 10⁵ N.O./N.C.; switching capacity 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% not condensing |
Manufactured under | ISO 9001, ISO 14001 |
Compliance | CE, RoHS Compliant, EAC |

Part No. | Description / Name | Power Supply | Wire Power Technology | Sensor Input | Output | Weight (gr.) |
---|---|---|---|---|---|---|
M9.08.P1 | Panel mount pH/ORP & Flow monitor | 12 – 24 VDC | 3/4 wire | pH/ORP, Temperature, Flow (Frequency) | 2*(4-20mA), 2*(S.S.R.), 2*(mech. relay) | 550 |
M9.08.W1 | Wall mount pH/ORP & Flow monitor | 12 – 24 VDC | 3/4 wire | pH/ORP, Temperature, Flow (Frequency) | 2*(4-20mA), 2*(S.S.R.), 2*(mech. relay) | 650 |
M9.08.W2 | Wall mount pH/ORP & Flow monitor | 110 – 230 VAC | 3/4 wire | pH/ORP, Temperature, Flow (Frequency) | 2*(4-20mA), 2*(S.S.R.), 2*(mech. relay) | 750 |
Dual-Parameter pH/ORP And Flow Monitor And Transmitter – FLS M9.08
Technical Specifications of Dual-Parameter pH/ORP And Flow Monitor And Transmitter – FLS M9.08

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.