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United Electric Controls has more than 80 years of proven experience providing rugged pressure and temperature electromechanical and electronic switches to Chemical & Petrochemical, Power, Water & Wastewater and Oil & Gas industries, as well as many other challenging OEM applications.
UE pressure switches, pressure transducers and pressure transmitters, temperature switches and temperature sensors are designed for rugged, industrial environments.
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180 Dexter Ave
Watertown, MA 02472-4200
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One Series Safety Transmitter
The One Series Safety Transmitter was designed with features that simplify installation, improve productivity, and eliminate nuisance trips. “I Am Working” sensor diagnostics with redundant data processing detect open, shorted, and plugged sensing elements.
The transmitter’s analog output conforms to the NAMUR NE 43 standard and provides process variable (PV) and detected-fault information. Discrete outputs provide a fail-safe (open) emergency shutdown when a fault is detected. Set point and deadband (reset point) are 100% programmable.
The instrument is password protected to prevent unwanted parameter changes; eliminating the risk of tampering. In addition, LED backlighting enhances viewing of process variables, parameters, and status in dimly lit areas.
1. Fewer nuisance trips for greater productivity
2. More affordable than adapting a process transmitter for SIS
3. Internal relay for faster emergency shutdowns
4. Higher safe failure fraction simplifies SIL achievement
SIL 2 Certified Safety Transmitters
Pressure Safety Transmitters & Temperature Safety Transmitters for Explosion Proof Hazardous Locations
4-20 mA analog (NAMUR NE 43 standard, accuracy tested in real time)
Safety Relay Output (SRO) — Solid state relay rated at 250 VAC @ 5 A, 24 VDC @ 6 A and 125 VDC @ 2.5 A, programmable
for set point and deadband
SRO Status — Indicates status of the safety relay output
IAW Output — Indicates device health status
Instrument response time: <100 milliseconds (SRO)
SFF = 98.8%; PFDavg = 1.19x10-3
Risk reduction factor: 840 to maximize safety integrity level (SIL) when used as a component in a safety-instrumented function (SIF)
Redundant and diverse instrument amplifiers and A/D converters
Diverse S/W algorithms process sensor data in parallel to ensure integrity
Certified for use in SIL 2 safety systems by exida1, with SIL 3 capability
Polyester-coated bright yellow aluminum Div. 1 Ex d casting — easily identifies SIF safety transmitter
FMEDA report available upon request
Large digital display provides process variable, status, self-diagnostics and field programming information
4-20 mA analog output with field scaling capability
100% programmable high-capacity safety relay (switch set point & deadband)
Effectively replaces a gauge, transmitter and a switch to reduce potential leak paths
Worldwide hazardous location approvals for Class I, Divisions 1 & 2 (Zones 1 & 2)
"I want safety, straight
out of the box!"
The One Series Safety Transmitter is a pressure or temperature monitoring transmitter switch that provides a NAMUR NE 43 standard 4-20 mA analog output. Its programmable high-capacity solid-state safety relay output enables the fastest emergency shutdowns.
The One Series Safety Transmitter is certified for use in SIL 2 functional safety applications (HFT = 0), and is capable of SIL 3 applications when augmented by redundancy and voting logic. Its simple design means fewer nuisance trips — for greater safety, productivity, and throughput.
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