Choosing an OEM pressure transmitter comes down to six factors: the real pressure range, media and wetted-material compatibility, the electrical output signal, the mechanical process connection, the accuracy and response you actually need, and the operating environment. Get those right and the transmitter disappears into the machine. Get one wrong and it becomes a warranty problem.
This guide walks through each factor, then compares four SENSVISION TYP-A OEM transmitters against typical applications.
Whether you are designing pneumatic equipment, industrial automation systems, hydraulic machinery, process skids or custom measurement assemblies, the transmitter has to fit far more than the pressure range on the spec sheet. Diversified Technologies’ OEM pressure transmitters provide configurable measurement options for OEM integration, including compact devices for general industrial measurement, low-pressure applications, compressed-air systems and cost-sensitive builds.
1. Start With the Real Pressure Requirement
Pressure range should be selected on how the equipment actually operates, not on the highest number in the design requirement. A well-chosen range accounts for normal operating pressure, maximum continuous pressure, startup and shutdown conditions, pressure spikes and credible abnormal events.
Because transmitter accuracy is normally expressed as a percentage of span, the absolute measurement error scales with the range you choose. Specify a 400 bar (5,800 psi) device to monitor a 10 bar (145 psi) circuit and a ±0.5% span error becomes ±2 bar (±29 psi) — twenty percent of the value you care about. Specify a range too close to the system maximum and the transmitter sees frequent overload events instead. The correct range sits comfortably above your maximum continuous pressure without dwarfing your normal operating point.
Document before you specify
- Normal operating pressure
- Maximum continuous pressure
- Minimum operating pressure
- Pressure spikes, surges and water hammer
- Required overpressure (proof) and burst-pressure capability
- Pressure reference: gauge, absolute, sealed gauge, vacuum or compound
- Required measurement resolution and control tolerances
For broad industrial use, a transmitter with wide configurable range coverage supports component standardisation across several machine models. For genuinely low-pressure work, a dedicated low-pressure device will give you far more useful signal than a wide-range unit operating at the bottom of its span.
2. Evaluate the Process Media and Wetted Materials
A pressure transmitter becomes part of the process boundary. Its pressure port, diaphragm, seals and sensing element must all be compatible with the media being measured — and not just the primary fluid or gas. Consider condensate, contaminants, cleaning chemicals, additives, lubricants, moisture and abnormal conditions.
This is where sensing technology matters most. A ceramic Al₂O₃ diaphragm tolerates a wide range of industrial media. A piezoresistive stainless-steel sensor suits low-pressure measurement with good resolution. A non-media-isolated silicon sensor, by contrast, is intended for dry, non-aggressive gases only — excellent in compressed air, unsuitable for liquids, condensate-laden lines or anything chemically aggressive
Questions to answer
- Is the media air, gas, water, oil, coolant, refrigerant or another industrial fluid?
- Is the media chemically aggressive?
- Will there be moisture, condensate, particulates or residue?
- What are the minimum and maximum media temperatures?
- Are special requirements needed — oxygen compatibility, oil- and grease-free construction, or specific seal materials (FKM, EPDM)?
Across the TYP-A range: the TYP-A 200 and TYP-A 300 use ceramic Al₂O₃ sensing; the TYP-A 110 uses a piezoresistive stainless-steel sensor for low pressures; and the TYP-A 100 uses a silicon sensor without media isolation, restricting it to pressurised air and non-aggressive gases.
Our engineers can help you identify the best sensor for your application, whether you’re designing a new system or replacing an existing transmitter. Get expert recommendations based on your pressure range, media, output signal, environmental conditions, and budget.
3. Select the Right Electrical Output
The output signal must match the control system, PLC, embedded controller, display or remote-monitoring hardware built into the equipment.
4–20 mA, two-wire
The industrial default. A current loop is immune to voltage drop along the cable, tolerates long runs, and rejects electrical noise — the right choice wherever the machine contains motors, solenoids, contactors or variable-frequency drives.
0–10 V, three-wire
A voltage output suited to compact machinery and controllers with analogue voltage inputs, and to short cable runs where noise pickup and voltage drop are not a concern.
Ratiometric voltage
An output that scales with the supply voltage (commonly 0.5–4.5 V from a 5 V supply), useful where OEM electronics share a regulated rail with the sensor and can reference the same supply.
The TYP-A models offer 4–20 mA as standard, with 0–10 V and ratiometric options depending on configuration.
Verify before you commit
- Controller input type and resolution
- Supply voltage range available in the machine
- Cable length and routing
- Grounding and shielding approach
- Electrical-noise exposure
- Signal scaling requirements
- Response-time needs
- Reverse-polarity and short-circuit protection
- Electrical connector type: M12, DIN 43650, flying lead or cable gland
4. Confirm the Mechanical and Process Connection
The pressure connection must match the machine’s manifold, pipework, port or fitting design — thread type, thread size, sealing method, orientation, clearance and service access. A mismatch leads to leakage, damaged threads, installation delays or unreliable measurement. Standardise pressure-port configurations early in the design process wherever you can.
Review before selecting
- Required thread standard and size (G, NPT, M, UNF)
- Tapered versus parallel thread requirements
- Seal type and material compatibility
- Installation torque
- Tool clearance during production and maintenance
- Exposure to hose loads or vibration
- Need for a flush diaphragm or special process connection
The TYP-A range offers configurable electrical and mechanical connection options for integration into different industrial assemblies.
Tell us about your application and we’ll recommend the most suitable pressure transmitter based on your operating pressure, media, connection type, output signal, and environmental requirements.
Contact us today for more information!
5. Consider Accuracy, Stability and Response Time Together
Accuracy is meaningless without the range attached to it. A ≤ ±0.5% span specification means ±0.005 bar (±0.07 psi) on a 1 bar device and ±2 bar (±29 psi) on a 400 bar device. Always convert the percentage into the engineering units your control loop actually works in.
Note too that reference accuracy — measured at 20 °C under laboratory conditions, typically to IEC 61298-2 or EN IEC 62828-2 — is not the error you will see in the field. Thermal effects over the machine’s real temperature range often dominate. Where the control loop is tight, ask for the total error band, not just the reference figure.
Beyond reference accuracy, assess
- Repeatability
- Hysteresis
- Thermal effects across the compensated temperature range
- Long-term stability (drift per year)
- Response time and measuring rate
- Control-loop filtering and damping
- Maintenance and recalibration requirements
Within the TYP-A family, the TYP-A 200, TYP-A 110 and TYP-A 100 offer ≤ ±0.5% span accuracy for applicable ranges (the TYP-A 110 relaxes to ≤ ±1% span at or below 160 mbar / 2.3 psi). The TYP-A 300 is the cost-effective alternative at ≤ ±1% span, which is entirely adequate for standard industrial monitoring and alarm duties.
6. Account for the Operating Environment
Pressure transmitters are usually installed exactly where the abuse is: next to pumps, compressors, motors, manifolds and valves. Evaluate the transmitter against the installation environment, not only against the process pressure.
Environmental considerations
- Media temperature and ambient temperature limits
- Vibration from pumps, motors or compressors
- Shock during machine operation or transport
- Moisture, washdown or condensation — and the ingress protection (IP) rating required
- Dust and contamination
- Electromagnetic interference
- Cable strain relief and connector protection
The TYP-A models are built for industrial conditions, with stainless-steel housings, EMC performance to EN IEC 61326-1, permanent short-circuit protection on applicable configurations, and vibration resistance of 10 g from 25 Hz to 2 kHz.
Comparing the TYP-A OEM Pressure Transmitters
The following four models from the OEM pressure transmitters range address different OEM measurement requirements.
| Model | Sensor | Nominal range | Accuracy | Outputs | Best fit |
| TYP-A 200 | Ceramic Al₂O₃ | 0.1–400 bar (1.5–5,800 psi); optional −1.0 bar (−14.5 psi) | ≤ ±0.5% span | 4–20 mA, 0–10 V, ratiometric | General industrial and mechanical engineering. Widest range coverage; gauge and absolute versions; one platform configurable across several machine models. |
| TYP-A 300 | Ceramic Al₂O₃ | 1.6–250 bar (23–3,625 psi), gauge | ≤ ±1% span | 4–20 mA std; 0–10 V, ratiometric optional | Cost-conscious, higher-volume builds needing dependable general pressure feedback rather than premium accuracy. |
| TYP-A 110 | Piezoresistive stainless steel | 100 mbar–6 bar (1.5–87 psi), gauge | ≤ ±0.5% span above 160 mbar; ≤ ±1% span at or below 160 mbar | 4–20 mA std; 0–10 V, ratiometric optional | Low-pressure machinery, process air, pneumatics, test rigs and compact automation where a wide-range device would waste resolution. |
| TYP-A 100 | Silicon, non-media-isolated — dry, non-aggressive gas only | −1.0 to 6 bar (−14.5 to 87 psi), configuration dependent | ≤ ±0.5% span | 4–20 mA, 0–10 V, ratiometric | Compressed-air networks, regulators, filters, FRL assemblies, valve manifolds and actuators. Fast response (1 kHz measuring rate). |
TYP-A 200: Flexible Industrial Pressure Measurement
The TYP-A 200 OEM Industrial Pressure Transmitter is the broadest general-purpose option in the group — designed for mechanical engineering, industrial automation, hydraulic and pneumatic equipment, process monitoring and OEM machinery where one flexible transmitter platform has to cover several applications.
Nominal coverage extends from 0.1 to 400 bar (1.5 to 5,800 psi), with an optional −1.0 bar (−14.5 psi) underpressure range. The ceramic diaphragm provides strong mechanical resistance and broad media compatibility; the stainless-steel housing handles durable machine integration.
Key features
- Gauge and absolute pressure versions
- Nominal ranges from 0.1 to 400 bar (1.5 to 5,800 psi)
- Optional −1.0 bar (−14.5 psi) underpressure measurement
- Ceramic Al₂O₃ diaphragm
- ≤ ±0.5% span accuracy for standard ranges
- 4–20 mA, 0–10 V and ratiometric output options
- 1 kHz measuring rate
- Optional EPDM seals
- Oil- and grease-free and oxygen-compatible configuration options
Choose the TYP-A 200 when you want one transmitter family configurable across multiple machine variants without changing the control or mechanical design.
TYP-A 300: Cost-Effective Standard Industrial Measurement
The TYP-A 300 OEM Low Cost Pressure Transmitter is for equipment manufacturers who need reliable pressure feedback without the broader range or tighter accuracy of a premium general-purpose device.
It supports nominal gauge pressures from 1.6 to 250 bar (23 to 3,625 psi) using a ceramic Al₂O₃ sensing element — appropriate for standard industrial machinery, fluid-power systems, process equipment and volume production where component cost matters.
Key features
- Nominal gauge ranges from 1.6 to 250 bar (23 to 3,625 psi)
- Ceramic Al₂O₃ sensor
- ≤ ±1% span accuracy
- 4–20 mA standard output; 0–10 V and ratiometric optional
- Stainless-steel housing
- FKM sealing
- Industrial temperature and EMC performance
For an OEM building at scale, the TYP-A 300 strikes a practical balance between price, durability and integration flexibility.
TYP-A 110: Dedicated Low-Pressure Monitoring
The TYP-A 110 OEM Low Pressure Transmitter is for applications where lower pressures must be measured with genuinely useful resolution.
It covers gauge ranges from 100 mbar to 6 bar (1.5 to 87 psi), making it suitable for low-pressure pneumatic systems, process-air equipment, test assemblies and compact machinery. Its piezoresistive stainless-steel sensor is purpose-built for the low end of the scale.
Key features
- Nominal ranges from 100 mbar to 6 bar (1.5 to 87 psi)
- Piezoresistive stainless-steel sensor
- ≤ ±0.5% span accuracy above 160 mbar (2.3 psi)
- ≤ ±1% span accuracy at or below 160 mbar (2.3 psi)
- 4–20 mA standard output; 0–10 V and ratiometric alternatives
- Long-term stability of ≤ ±0.2% span per year at reference conditions
Reach for the TYP-A 110 when a general industrial device would have too broad a range to give meaningful low-pressure performance.
TYP-A 100: Pneumatics and Compressed-Air Systems
The TYP-A 100 OEM Pneumatics Pressure Transmitter is engineered specifically for compressed-air and non-aggressive-gas applications.
It uses a silicon sensor without media isolation — which is what makes it fast and cost-effective in pneumatics, and also what rules it out for liquids and aggressive media. Nominal ranges run from −1.0 to 6 bar (−14.5 to 87 psi) depending on configuration, including a −1.0 bar selection for vacuum-related monitoring
Key features
- Designed for pressurised air and non-aggressive gases only
- Nominal ranges from −1.0 to 6 bar (−14.5 to 87 psi)
- ≤ ±0.5% span accuracy
- 1 kHz measuring rate
- Response time ≤ 10 ms (4–20 mA output)
- Response time ≤ 3 ms (0–10 V output)
- 4–20 mA, 0–10 V and ratiometric signal options
- Stainless-steel pressure port and housing
- Vibration and shock resistance for industrial installations
That fast response makes the TYP-A 100 well suited to pneumatic valve manifolds, compressed-air distribution, regulators, filter and FRL assemblies, actuators and general mechanical-engineering equipment running on air.
Speak with a Diversified Technologies engineer at 585-461-2110 or email sales@diversifiedtech.net. We’ll review your technical requirements, recommend the best-fit product or system configuration, and provide a formal quote with current lead times.
Frequently Asked Questions
What is the difference between a pressure transducer and a pressure transmitter?
Both convert pressure into an electrical signal. A transmitter includes amplification and signal conditioning and outputs a standardised signal such as 4–20 mA or 0–10 V, which suits longer cable runs and noisy environments. A transducer typically outputs a low-level signal such as mV/V and assumes signal conditioning already exists downstream. In practice the terms are often used interchangeably, and “pressure sensor” covers both.
Should I use a 4–20 mA or 0–10 V pressure transmitter?
Use 4–20 mA where cable runs are long or the machine contains motors, drives, solenoids or contactors — a current loop is immune to voltage drop and rejects electrical noise. Use 0–10 V for short runs on compact machinery where the controller already has analogue voltage inputs.
What is a ratiometric pressure transmitter output?
A ratiometric output scales with the supply voltage rather than producing a fixed absolute voltage, commonly 0.5–4.5 V from a 5 V rail. It is useful in embedded OEM electronics where the sensor and the controller share the same regulated supply, because supply variation affects both equally and cancels out.
What accuracy do I actually need from a pressure transmitter?
It depends on function. A closed-loop control application where small pressure changes alter machine behaviour justifies ≤ ±0.5% span or better. A simple alarm or monitoring point is well served by ≤ ±1% span. Always convert the percentage into engineering units at your actual operating point — and check thermal error, not just reference accuracy.
How much overpressure margin should I allow?
Enough to survive the worst credible transient, not just the nominal maximum. Pumps, valve closures and startup surges routinely produce spikes well above steady-state pressure. Check both the overpressure (proof) rating, which the device survives without permanent damage, and the burst pressure, which is a safety limit rather than a design target.
Next Steps
Explore the complete OEM pressure transmitter range from Diversified Technologies to identify the best configuration for your application, or call 585-461-2110 to discuss your specification with our engineering team