What makes the PR Electronics 9116B suitable for hazardous-area signal conditioning?

The PR Electronics 9116B is SIL 2-certified via Full Assessment to IEC 61508 and Ex ia approved, allowing it to receive signals directly from Zone 0, 1, 2 and Zone 20, 21, 22 hazardous areas while the converter itself sits in the safe area or Zone 2. This combination of safety certification and universal input handling makes it a preferred choice for critical instrumentation loops.

What input and output signal types does the 9116B support?

The 9116B accepts RTD, thermocouple, Ohm, potentiometer, mA, and V inputs on a single universal channel, and produces a programmable active or passive mA output plus an independently configurable relay output for setpoint, window, sensor-error, or power-monitoring functions.

Is the 9116B compatible with existing RTD and thermocouple sensors already installed in the field?

Yes. The 9116B supports the full range of common RTD types (Pt10 through Pt1000, Ni50 through Ni1000) and thermocouple types B, E, J, K, L, N, R, S, T, U, W3, W5, and LR, so it can typically be integrated with legacy sensors already installed on site without resizing the sensor itself.

Can the 9116B be reconfigured or diagnosed without removing it from the DIN rail?

Yes. When paired with the detachable PR 4500 display and programming front, the 9116B supports on-site process calibration, signal and relay simulation, and configuration copying between multiple units of the same type, all without disconnecting the unit from its terminals.

Is Seven Star LLC an authorized representative for PR Electronics products?

Yes, Seven Star LLC is the officially authorized partner and exclusive regional representative for PR Electronics in Oman and the GCC, supplying genuine hardware, manufacturer warranty, and technical support from Muscat.

PR Electronics 9116B Universal Converter

Name: PR Electronics 9116B Universal Converter | Seven Star LLC
Brand: PR electronics

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 around the well-established PR Electronics 9100 series platform, the PR Electronics 9116B accepts a wide range of input types – RTD, thermocouple, resistance, potentiometer, mA and V – and converts them into a clean active or passive mA output, with an additional configurable relay output for alarm, setpoint, or status signalling. The PR Electronics 9116B’s Ex ia approval allows it 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 is installed 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.

As the official authorized partner and exclusive regional representative for PR Electronics, 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 genuine PR Electronics hardware backed by full manufacturer warranty, 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.

As the officially authorized partner for PR Electronics, Seven Star LLC distributes 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 regional stock and technical support mean that safety-critical instrumentation loops can be commissioned or repaired without the lead times associated with importing directly from Europe.

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

Call To Action

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. As the authorized partner for PR Electronics in Oman and the GCC, Seven Star LLC maintains regional warehouse stock, 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.

PR electronics is a specialist in signal conditioning and temperature measurement, trusted for robust 2-wire HART® transmitters, head-mounted converters, and DIN-rail isolators used across oil & gas, power, marine, and process industries. The portfolio spans RTD/thermocouple transmitters, 4–20 mA loop devices, universal converters, intrinsic-safety barriers, and SIL-capable modules for safety loops. Flagship lines—such as the PR 5335D head-mounted 2-wire temperature transmitter—deliver accurate RTD/T/C input handling, HART diagnostics, sensor error detection, and noise-immune performance for harsh environments. Engineering benefits include fast configuration (PC/HART), high EMC immunity, galvanic isolation, and long-term stability that reduces calibration and downtime.