XGM868i

# Product Introduction
The DigitalFlow™ XGM868i Ultrasonic Gas Flow Meter is a transit-time flow meter engineered specifically for accurate flow measurement of various gases. The DigitalFlow™ XGM868i is a cost-effective flow transmitter integrating unique advantages including an exceptional measurement range, easy installation and operation, low maintenance requirements, and high-precision measurement.


Inherited from Panametrics' renowned innovative ultrasonic flow meter product line, this device adopts cutting-edge technology and delivers multiple prominent strengths. The fully digital XGM868i flow meter features a pressure-loss-free design with no easily contaminated, sediment-prone or moving parts inside its structure. It requires virtually no maintenance, boasting high reliability and enabling drift-free precise measurement. Flow data can be displayed on handheld devices or transmitted to remote systems via analog or digital output modes.


# Product Parameters
## XGM868i Product Specifications
### Operation and Performance
**Fluid Type**
All gases capable of ultrasonic wave propagation


**Nominal Diameter Range**
50 A ~ 3000 mm


**Pipe Material**
All metals. For other material options, please consult Panametrics.


**Accuracy (Flow Velocity)**
Typical reading accuracy: ±1% to ±2%
Measurement accuracy varies depending on pipe diameter and number of measuring paths. Reading accuracy up to ±0.5% can be achieved through actual flow calibration.


**Repeatability**
Reading repeatability: ±0.2% to ±0.5%


**Bidirectional Measurement Range**
-46 m/s ~ +46 m/s


**Overall Turndown Ratio**
1500 : 1


This design specification requires uniform flow velocity distribution (typically requiring a straight pipe length of 20 times the pipe diameter upstream and 10 times downstream) and a flow velocity exceeding 1 meter per second.


**Measurable Parameters**
Mass flow rate, standard flow rate, actual flow rate, cumulative flow rate and flow velocity


**Converter Flow Measurement Method**
Transit Time Difference Method


**Power Supply**
- Standard Voltage: 90～240 V AC, 50/60 Hz
- Optional: 12 to 28 V DC, ±5%
Note: Class 2 power supply must be used for DC power input.


**Power Consumption**
Maximum 20 W


**Operating Temperature**
-40℃ ~ +60℃


**Storage Temperature**
-55℃ ~ +75℃


**Standard Input/Output**
0/4 to 20 mA isolated output, dual-channel design, maximum load resistance 600Ω; Compliant with Namur NE043 standard


# Product Applications
The DigitalFlow XGM868i gas flow meter is a flow measurement system suitable for nearly all gases, delivering accurate measurement for the following gas types:
- Hydrocarbon gases
- Bentgas
- Biogas
- Digester gas
- Fuel gas
- Exhaust gas
- Combustor inlet gas
- Steam recovery
- Flue gas
- Other industrial gases