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NDIR gas sensor FLOWEVO / FLOWEVO plus are based on the infrared absorption technology and comply with the highest standards in accuracy, reliability and efficiency.
Due the consequent use of this optical principle the systems work without abrasion or chemical reactions and are nearly maintenance free.
All FLOWEVO / FLOWEVO plus are available in an industry suitable case with integrated thermal isolation.
The FLOWEVO / FLOWEVO plus housing is made of aluminum to protect the sensor from mechanical damage and is with fitted with gas line connectors (inlet and outlet) to allow perfusion of the FLOWEVO / FLOWEVO plus The Case is equipped with a fiber heat isolation to ensure there will be no condensing steam inside the housing at hig environment humidity .
Type :
FLOW EVO / FLOW EVO plusOur NDIR gas sensor FLOWEVO / FLOWEVO plus as basis the IR principle uses the individual absorption spectrum of the gas to be detected and specifies the concentration by the precise quantitative analysis.
Because all measured gases absorb IR radiation in a different spectrum a so called “fingerprint” is given which ensures a selective characterization with less cross sensitivities.
An integrated evaluation electronic delivers finally an easy to use concentration signal and compensates all temperature- and drift effects.
All FLOWEVO / FLOWEVO plus are available in an industry suitable case with integrated thermal isolation.
The FLOWEVO / FLOWEVO plus housing is made of aluminum to protect the sensor from mechanical damage and is with fitted with gas line connectors (inlet and outlet) to allow perfusion of the FLOWEVO / FLOWEVO plus The Case is equipped with a fiber heat isolation to ensure there will be no condensing steam inside the housing at hig environment humidity .
Product Advantages:
Product Advantages FLOWEVO plus:
FLOWEVO |
FLOWEVO plus |
Specification FLOWEVO / FLOWEVO plus:
|
FLOWEVO |
FLOWEVO plus |
Detection Principle |
NDIR (Dual Beam) |
|
Measuring Range |
See List |
|
Gas Supply |
Flow |
|
Dimensions |
See Mechanical Data |
|
Hose connection |
3mm internal, 5mm outside (Standard) |
|
Readout NoiseABS (Typical) |
±0.1%FS@ T90 <14sec (standard) |
±0.075%FS @ T90 < 3sec |
Readout Cycle |
Max 2.5Hz |
Max 10Hz |
Response time (T90) |
T90 <14sec (standard) T90 <3sec (fast mode) |
T90 <3sec |
Digital Resolution(@zero) |
1 ppm ...0.1 Vol.% |
|
Detection Limit (3sigma) |
≤ 1 % FS(typically) |
|
Repeatability |
≤ ±1 % FS |
|
Linearity Error |
≤ ±1 % FS ( depend on type) |
|
Stability (zero) |
≤ ±2 % FS during 12 month |
|
Stability (span) |
≤ ±2 % FS during 12 month |
|
Temperature Drift. (zero) |
≤ ±0,1 % FS per °C |
|
Temperature Drift. (span) |
≤ ±0,15 % FS per °C |
|
Pressure Drift. |
0.1 % up to 0.2 % Value per mbar |
|
Operating Temp |
0 °C up to 50 °C |
|
Storage Temp |
-20 °C up to 60 °C |
|
Ambient Humidity |
0 % up to 95 % rel. Humidity (not condensing ) |
|
Ambient Air Pressure |
800 up to 1200 mbar |
|
Warm up Time |
< 2 minutes (cold start ) < 30 minutes full specification |
|
Flow |
0.1 up to 1.0 L / min (const ) |
|
Digital Output |
Modbus ASCII RTU TTL Single Wire |
2400-115200 Auto baud rate, auto frame - Free ASCII - Modbus ASCII - Modbus RTU - EVO Modbus ASCII - EVO Modbus RTU
9600, 8, none, 1 - SCII Modbus RTU |
Option : Analog Output |
Optional with external Controller
|
Optional internal 0-2VDC , min resistance load 2kΩ 0-5VDC , min resistance load 2kΩ 0-10VDC , min resistance load 2kΩ |
Option : Digital Output |
Optional with external Controller RS 485 (With S-Connect RS485) |
Integrated RS232 |
Operating Voltage |
3,3 to 6 V DC ± 5 % |
10-26VDC, recommend 24VDC |
Drive Current |
Not Heated |
Heated |
Power consumption |
Not Heated |
Heated <9 W @24V for Type I (73) <17 W @24V for Type I (113mm...153mm) <21 W @24V for Type I (233mm) <31 W @24V for Type I (333mm) |
Heating |
Optional with external heat controller |
Internal for all types of FLOWEVO |
Pressure Compensation |
Environment Pressure Compensation |
Environment Pressure Compensation Cuvette Pressure Compensation (optional) |
Optional |
No |
yes |