One Series Safety Transmitter

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.





Product Overview


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


  • SIL 2 Certified Safety Transmitters
  • Pressure Safety Transmitters & Temperature Safety Transmitters for Explosion Proof Hazardous Locations

  Sealed metal bellows sensor

  Brass or phosphor bronze wetted material

  Compact size

  Easy external adjustment

  AdjustaOptional adjustable deadband switch

  UL recognized for the US and  Canada; CE

    compliant to LVD & PED

J40 Series Customer Drawings


13374 -Type J40, Models 218

7403 - Type J40, Models 222 to 230

7639 - Type J40, Models 252 to 274










The Leaders in Safety, Alarm & Shutdown

Protecting People, Processes & Equipment.

Our reputation for dependable, reliable products is a result of innovative design, superior manufacturing techniques, and a corporate focus on uncompromising quality.

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