Benetech GM521 vs GM523 Gas Pressure Manometer Buying Guide Malaysia
Which Benetech Gas Pressure Manometer Should You Choose?
Choosing between the Benetech GM521 and GM523 starts with the pressure you expect to measure. The GM521 has a listed measuring range of 35 kPa, while the GM523 has a listed range of 10 kPa.
For maintenance teams and equipment technicians in Malaysia, this difference matters more than choosing the model with the larger number. The instrument should cover the expected working pressure while providing measurement performance suitable for the equipmentās acceptance limits.
Both models offer a large LCD, data hold, recording mode and USB connectivity for reading and exporting data through a PC.
GM521 vs GM523: Key Specifications
SpecificationBenetech GM521Benetech GM523Listed measuring range35 kPa10 kPaAccuracy at 25Ā°CĀ±0.3% FSOĀ±0.3% FSORepeatabilityĀ±0.2%Ā±0.2%Linearity/hysteresisĀ±0.29% FSOĀ±0.29% FSOResponse time0.5 seconds0.5 secondsListed operating temperature0ā50Ā°Cā10ā60Ā°CStorage temperatureā10ā60Ā°Cā10ā60Ā°CData hold and recording modeYesYesUSB connection for PC data accessYesYes
The catalogue lists 35 kPa and 10 kPa without explicitly defining the complete positive and negative measuring limits. Confirm the required pressure direction and usable range before ordering.
Choose GM521 When You Need the Higher Listed Range
The GM521 is the model to consider when the intended pressure exceeds the GM523ās listed 10 kPa range but remains within the GM521ās confirmed measuring limits.
A wider range can be useful when checking equipment with different pressure settings. However, it does not automatically make the instrument more suitable for small pressure changes.
Before selecting it, identify the normal working pressure, the highest expected pressure and the allowable measurement error. Unexpected pressure surges should also be considered when confirming instrument suitability.
Choose GM523 for Applications Within Its 10 kPa Range
The GM523 is worth considering when the required measurements fit within its listed 10 kPa range.
Both models specify accuracy as Ā±0.3% FSO, meaning the accuracy statement is based on full-scale output rather than simply a percentage of the displayed reading. With this type of specification, range selection affects the absolute error allowance.
A smaller range may therefore be advantageous for lower-pressure measurements. However, the catalogue does not state display resolution, so do not assume GM523 displays smaller pressure increments without checking the complete specification.
For equipment with narrow pressure tolerances, assess both accuracy and resolution before choosing either model.
Pressure Measurement Is Different from Gas Concentration Detection
These instruments are described as gas pressure manometers. Their listed measurement units include kPa, mbar and psi, which express pressure.
Although the catalogue illustration includes the phrase āmeasuring gas concentration,ā the GM521 and GM523 specifications do not establish concentration measurement in ppm or percentage gas.
Use these models to assess pressure where the instrument and connection are suitable. A pressure reading alone does not establish gas concentration or confirm that an area is free from a gas leak.
How USB and Recording Functions Help Maintenance Work
Both models provide recording mode and a USB interface, with the catalogue describing PC reading and data export.
These functions can help technicians retain pressure readings for equipment checks and maintenance records. Data hold is also useful when the display is difficult to read directly at the measurement point.
Before purchase, confirm the supplied software, supported computer operating system, export format and recording behaviour. These details are not specified on the catalogue page.
For facilities teams in Selangor and Kuala Lumpur, a consistent record of the equipment identification, operating condition and measurement point makes readings easier to compare during later inspections.
Check the Connection and Measurement Conditions
Before using either model, confirm:
Gas compatibility: The pressure sensor, hose and fittings must suit the intended gas.
Pressure limits: Verify the measuring range and permissible overload pressure.
Connection suitability: Match the pressure input to the equipmentās approved test point.
Temperature conditions: Keep the instrument within its specified operating environment.
Zero setting: Follow the instrument manual before taking readings.
The catalogue lists Err.1 for pressure beyond the positive range and Err.2 for pressure beyond the negative range. Treat either indication as a reason to check the pressure condition and instrument range before continuing.
Discuss Your Application with MTM Precision
For gas pressure instrument enquiries in Malaysia, share your expected pressure, gas type, equipment connection and required tolerance with MTM Precision. These details help determine whether the GM521 or GM523 is suitable for your application.
MTM Precision Sdn Bhd
Showroom & Service Centre: No. 29-1 & 29-2, Jalan Bandar 18, Pusat Bandar Puchong, 47160 Puchong, Selangor, Malaysia
Tel: 03-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Website: www.mtmpre.com.my
09 Oct 2026
