Enhance process safety in methane production with this intrinsically safe pressure transmitter featuring 316L stainless steel and FKM seals for superior chemical compatibility in low-pressure biogas environments.
Ensuring stable pressure monitoring in anaerobic digestion and landfill gas recovery requires instrumentation capable of handling both ultra-low pressure ranges and the corrosive nature of raw gas streams. The XMD is specifically engineered to address the nuances of low-range biogas measurement, where maintaining a 0 to 20 mbar window is critical for process safety and efficiency. At these minimal pressures, any drift or material degradation can lead to significant measurement errors. By utilizing a 316L stainless steel diaphragm in conjunction with FKM seals, the XMD provides a robust barrier against the moisture and trace hydrogen sulfide typically found in primary digester headspaces. This material combination is vital for preventing hydrogen embrittlement and permeation that can plague standard instrumentation in methane-rich environments.
Process engineers often deploy the XMD in applications such as gas holder volume monitoring or the control of gas scrubbing systems where precise differential or gauge pressure dictates the efficiency of the sulfur removal process. The high-end accuracy of 0.1% full scale ensures that even at the lower end of the factory-set 20 mbar range, the signal remains reliable for automated flare control or boiler feed regulation. Because the device is factory-configured from a 75 mbar base limit, it maintains a high turndown capability without sacrificing the signal integrity required for safety-critical loops. The inclusion of HART communications allows instrument technicians to perform remote diagnostics and re-ranging without breaching the hazardous area, which is essential when the unit is installed on top of a storage tank or within a specialized gas compression skid.
In a typical installation, such as monitoring the gas pressure before a combined heat and power unit, the XMD provides the necessary intrinsic safety for Zone 0 or Zone 1 environments. The 1/4-18 NPT female connection facilitates a secure, leak-proof interface with standard industrial piping, ensuring that volatile organic compounds and methane do not escape into the atmosphere. This focus on low-range stability and chemical resilience makes the XMD an ideal choice for research-scale bioreactors or large-scale municipal wastewater treatment plants where the consistent monitoring of biogas production rates is paramount for optimizing energy yields.
XMD Biogas ATEX Pressure Transmitter
- Part No: 340-0750-AN-I-1-AK0-N56-1-1-000
- Upper Pressure Range Limit: 0 to 75 mbar differential
- Factory Set Pressure Range: 0 to 20 mbar
- ATEX Approval Type: Intrinsic safety
- Output Signal: 4 to 20 mA, 2 wire with HART communications
- Accuracy: 0.1% full scale
- Diaphragm Material: Stainless steel 316L
- Media Exposed Seals: FKM
- Process Connection Material: Stainless steel 316L
- Process Connection: 1/4-18 NPT female