Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 24 V DC ±10% |
| Hazardous Area Rating | ATEX / IECEx, Zone 1 and Zone 2 |
| Communication | Modbus RTU |
| Operating Temperature | -40°C to +85°C ambient |
| Humidity | 0–95% RH, non-condensing |
| Enclosure Rating | IP67 |
| Galvanic Isolation | 2500 V AC between field and control side |
| Supported Inputs | RTD, 4–20 mA analog field signals |
| Mounting | Panel or DIN rail installation |
| Dimensions | 100 mm × 70 mm × 50 mm |
| Weight | 0.5 kg |
Product Introduction
The STS PTM.MTNEx 131299 is an intrinsically safe interface module built for sensor signal handling in explosive atmospheres. It receives analog and RTD signals from field instruments and transfers isolated data to PLC and DCS hosts over Modbus RTU.
This unit limits energy delivered to field wiring to maintain intrinsic safety. Its sealed IP67 housing removes the need for extra protective cabinets in outdoor or wet hazardous locations, reducing installation hardware count.
PTM.MTNEx 131299
PTM.MTNEx 131299
PTM.MTNEx 131299
Application Scenarios & Field Experience
Part 1 (Narrative Paragraph)
Many hazardous-area sites rely on separate barrier assemblies for field sensors. These multi-component setups add wiring points and create drift when barriers age. The STS PTM.MTNEx 131299 combines signal isolation and Ex safety certification within one sealed module to stabilize measurement loops.
Part 2 (Numbered List)
- Oil & gas: Offshore platform tank pressure and temperature monitoring, Zone 1 classified spaces.
- Chemical manufacturing: Solvent reactor RTD and 4–20mA transmitter signal isolation.
- Biogas facilities: Methane digester process measurement in explosive gas zones.
- Refinery: Crude pipeline sensor interface for continuous process monitoring.
Part 3 (Short Field Story)
A petrochemical plant faced unstable analog readings caused by aging safety barriers. We installed STS PTM.MTNEx 131299 modules using existing field cable runs. After calibration and safety documentation review, signal noise dropped. The measurement loops held steady for 21 months without recalibration.
Standard Operating Procedure (SOP) for Quality Control
- Visual & Origin Inspection: Verify OEM STS marking, ATEX/IECEx certification stamps and housing integrity; reject units with cracked enclosures or damaged terminal pins.
- Live Rig Testing: Apply 24V DC supply, simulate field sensor inputs, validate Modbus RTU data transfer and isolation resistance.
- Firmware Verification: Record firmware revision number on the test log; cross-check compatibility with your control host.
- ESD-Safe Packaging: Seal inside static shielding bag, fitted foam padding, carton printed with ESD and hazardous-handling warnings.
Frequently Asked Questions (FAQ)
Q1: Can STS PTM.MTNEx 131299 replace older third-party intrinsic safety barriers? A: It works as a functional replacement if your sensor type and zone classification match. Always cross-reference the Ex certificate parameters before commissioning. Mismatched safety ratings create site compliance risk.
Q2: What warranty applies to the STS PTM.MTNEx 131299 module? A: We offer a 12-month warranty. Warranty excludes damage from incorrect wiring, overvoltage, installation outside certified hazardous zones or physical housing damage.
Q3: What is stock and lead time for STS PTM.MTNEx 131299? A: Selected units are in stock. Final availability and dispatch timeline will be confirmed after you submit your procurement inquiry.
Q4: Will firmware differences affect Modbus data exchange with my DCS? A: Yes. Older firmware revisions use different register mapping. We share firmware revision details before shipment so your controls team validates register tables.
Q5: Can I hot-swap STS PTM.MTNEx 131299 while the hazardous process stays online? A: Hot swap is allowed only after setting the control loop to manual. Removing the module interrupts sensor readings and may trigger process interlock trips.
