PR Electronics 9116B Universal Converter
Overview
PR Electronics 9116B is a SIL 2-certified universal converter engineered to condition, isolate and scale process signals from field instruments installed in hazardous areas. Built on the established 9100 series platform, it accepts RTD, thermocouple, resistance, potentiometer, mA and V inputs and converts them into a clean active or passive mA output, with an additional configurable relay output for alarm, setpoint or status signalling. Its Ex ia approval allows the 9116B to receive signals directly from Zone 0, 1, 2 and Zone 20, 21, 22 (including Class I/II/III, Division 1, Groups A–G) while the converter itself sits in the safe area or Zone 2 / Class I, Division 2, making it a mainstay of Ex-rated instrumentation loops across oil & gas, petrochemical and process industries.
With fast quotation turnaround and technical support, Seven Star LLC proudly supplies the 9116B universal converter to process plants, refineries, and industrial facilities throughout the Sultanate of Oman and the wider GCC. Engineers in Muscat, Sohar, and Salalah rely on Seven Star LLC for PR Electronics hardware with application support, and access to the PR 4500 configuration and display accessories that make commissioning and diagnostics straightforward in the field.
Operating Principle
The PR Electronics 9116B operates as a galvanically isolated signal converter, providing 2.6 kVAC reinforced isolation between input, output, and supply circuits. The universal input stage accepts RTD types (Pt10 through Pt1000 and Ni50 through Ni1000), thermocouple types B, E, J, K, L, N, R, S, T, U, W3, W5, and LR, linear resistance and potentiometer signals from 10 Ω to 10 kΩ, current signals up to 23 mA, and voltage signals up to 12 VDC. Internal 24-bit signal conversion on the input side and 16-bit output resolution deliver accuracy better than 0.1% of the selected span, while programmable response times (0.4–60 seconds) let engineers tune the converter for fast-loop control or slow, damped temperature measurement.
On the output side, the PR Electronics 9116B produces a programmable current signal – 0–20, 4–20, 20–0, or 20–4 mA – in either active or passive two-wire mode through the same terminal pair, alongside an independently configurable relay for setpoint, window, sensor-error, or power-monitoring functions. NAMUR NE43-compliant upscale/downscale error indication (23 mA / 3.5 mA) ensures sensor faults and cable breaks are flagged immediately rather than passed downstream as valid process data. Because the conversion is entirely electronic and galvanically isolated, there is no mechanical wear, no calibration drift from moving parts, and no risk of ground loops propagating between the field sensor and the control system.
Engineering Design of the PR Electronics 9116B
Physically, the PR Electronics 9116B is housed in a compact DIN-rail enclosure measuring just 109 x 23.5 x 104 mm and weighing approximately 185 g, allowing dense mounting of multiple units side-by-side without spacing requirements on a standard DIN EN 60715/35 mm rail. The housing carries front-facing status LEDs – green and red for operation and malfunction, plus a dedicated yellow LED for relay status – giving technicians an immediate visual read of loop health without opening a laptop or HART communicator. Screw terminals accept 0.13–2.08 mm² (AWG 26–14) stranded wire with a 5 mm stripping length and a specified 0.5 Nm torque, keeping field wiring both secure and IP20-rated for panel and cabinet installation.
What distinguishes the PR Electronics 9116B from a fixed-function isolator is its configurability: the unit can be paired with the detachable PR 4500 display and programming front for on-site process calibration, signal simulation, relay testing, and configuration copying between multiple 9116B units of the same type – a significant time saver on multi-loop skid packages. The PR Electronics 9116B converter can be supplied as a standalone DIN-rail device or installed on the PR 9400 power rail for centralized supply distribution across a rack of Ex-i interface modules. Supply voltage is 19.2–31.2 VDC with maximum required power of 2.1 W, and the unit is rated for continuous operation from -20°C to +60°C, matching the ambient extremes found in Gulf-region outdoor instrument enclosures and unconditioned equipment rooms.
Key Features
The PR Electronics 9116B universal converter combines flexible signal handling with hazardous-area certification in a single compact module, and its key features include:
- Universal input accepting RTD, thermocouple, Ohm, potentiometer, mA, and V signals from a single configurable channel.
- SIL 2 certification via Full Assessment according to IEC 61508, with a published FMEDA report and dedicated safety manual.
- Active or passive mA output delivered through the same two terminals, simplifying wiring changes in the field.
- Configurable relay output supporting setpoint, window, sensor-error, power, and off functions rated up to 250 VAC/VDC.
- Ex ia approval for direct connection to Zone 0, 1, 2 and Zone 20, 21, 22 hazardous-area sensors, with the converter itself mountable in the safe area or Zone 2.
- 2.6 kVAC reinforced galvanic isolation between input, output, and supply circuits.
- Compatibility with the PR 4500 display and programming front for local calibration, simulation, and configuration cloning.
- Optional mounting on the PR 9400 power rail for compact, centralized multi-channel installations.
Industrial Applications
The PR Electronics 9116B is deployed wherever hazardous-area field instruments (see the PR Electronics 9116B datasheet for full application notes) need to hand off a clean, isolated signal to a safe-area PLC, DCS, or SCADA system. Typical installations include tank farms and loading terminals measuring temperature and level in Ex zones, refinery process units where thermocouple and RTD signals from furnaces and reactors must be converted and isolated before reaching the control room, and offshore platforms where SIL 2-rated signal integrity is a contractual requirement for safety instrumented functions. Its ability to accept potentiometer and linear resistance inputs also makes it a practical choice for valve position feedback and legacy transmitter retrofits where a modern 4–20 mA transmitter is not yet justified.
With engineering support in Muscat, Seven Star LLC supplies the 9116B to EPC contractors, instrumentation integrators, and plant maintenance teams across Oman and the GCC, supporting projects in the Sohar and Salalah free zones, Muscat-area refineries, and desalination and power facilities where hazardous-area signal isolation is specified. Seven Star LLC’s technical support helps safety-critical instrumentation loops to be specified correctly, with lead time confirmed at quotation.
Technical Specifications
Key specifications for the PR Electronics 9116B universal converter are summarized below.
| Parameter | Specification |
|---|---|
| Model | PR Electronics 9116B |
| Input types | RTD, TC, Ohm, potentiometer, mA, V |
| RTD types | Pt10/20/50/100/200/250/300/400/500/1000; Ni50/100/120/1000 |
| TC types | B, E, J, K, L, N, R, S, T, U, W3, W5, LR |
| Current input range | 0–23 mA, programmable 0–20 / 4–20 mA |
| Voltage input range | 0–12 VDC, programmable 0/0.2–1, 0/1–5, 0/2–10 VDC |
| Output | Active/passive mA, 0–20 / 4–20 / 20–0 / 20–4 mA programmable |
| Relay output | 250 VAC/VDC, 2 A max, setpoint/window/error/power functions |
| Accuracy | Better than ±0.1% of selected range |
| Isolation | 2.6 kVAC reinforced, input/output/supply |
| Supply voltage | 19.2–31.2 VDC, ≤2.1 W |
| Safety rating | SIL 2 certified & fully assessed to IEC 61508 |
| Hazardous area approval | ATEX, IECEx, UKEX, cFMus, INMETRO, CCC, KCs, EAC Ex |
| Operating temperature | -20°C to +60°C |
| Protection degree | IP20 |
| Dimensions (H x W x D) | 109 x 23.5 x 104 mm |
| Weight | Approx. 185 g |
| Mounting | DIN EN 60715/35 mm rail, or PR 9400 power rail |
Request a Quote for PR Electronics 9116B Universal Converter
Seven Star LLC invites facility engineers, EPC contractors, and procurement teams across Oman and the GCC to submit a formal RFQ for the PR Electronics 9116B universal converter. With manufacturer documentation available, Seven Star LLC supplies on request with lead time confirmed at quotation, offers technical datasheet downloads, and connects customers directly with the instrumentation division for application engineering, loop sizing, and hazardous-area compliance guidance. Contact Seven Star LLC today to request pricing, lead times, and full documentation for the 9116B and the wider PR Electronics 9100 series.
Related Products
- Datasheet PR Electronics 9116B Universal Converter Datasheet Download
PR electronics series listed here
The first two digits of a PR type number show the series. The 4116 is from the 4000 series of DIN-rail devices and accepts RTD, thermocouple, resistance, current and voltage inputs, with analog and relay outputs. The 9116B is from the 9000 series for safety and hazardous-area loops, and the B version is the one that takes signals from Ex zones. The 5335D is a 2-wire HART transmitter for mounting in a sensor connection head, and the D version is the intrinsically safe one. The 4000 and 9000 series are set up with the detachable 4500-series display front.Ordering PR electronics modules: what we need
Send the complete type number with its letter, plus the serial number from the side label. If you want the device delivered configured, give the input type and range, output range and relay settings. State the Ex approval and any SIL requirement of the loop. We serve projects across the GCC and provide the manufacturer's documents on request.Browse PR electronics products by category: Isolator & Barrier, Temperature Instrumentation.
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