P22400 Isolated Standard Signal Conditioner | Input 0(4) … 20 mA | For safety circuits up to SIL3
Description
Functional safety and maximum availability can go together
- Functional safety up to SIL 3
acc. to EN 61508 with certificate from an accredited testing body - Average failure rate
MTBF: 965 years - Low transmission error
0.08 % full scale - High isolation including protec-tion against electric shock
by reinforced insulation up to 600 V AC/DC - Test voltage 5.4 kV AC
- Minimal losses and low installation effort
thanks to loop-powered operation - Robust design
- Mechanically stable
approved by an independent test-ing laboratory, suitable for marine applications - Ambient temperature range during operation: -40 … +85 °C
- Resistant against electromagnetic interferences, meeting stringent SIL requirements
- 5-year warranty
Passive isolators with a technologi-cal advantage: fewer parts mean rare failures. For measurement and safety reasons, analog signals are routinely isolated in industrial facilities.
The requirements on plant and safety-related circuits are continuously increasing, for instance because of a growing awareness of occupational safety. Thereby, the technical require-ments on components are also being raised. However, higher functional safety is often bought by more effort and at the expense of availability. This does not have to be the case, as proven by P22400 passive isolator for standard signals.
Its operating principle enables the implementation of a product that combines high functional safety with high availability in a unique way – a balancing act that would otherwise be hard to achieve.
SIL 3 even in single-channel structure
P22400’s safety functionality is the highly precise, linear transmis-sion of 4 ... 20 mA signals.
A high level of functional safety can be achieved even in single-channel structure and without diagnostics. For instance, sensors and actuators in safety circuits can be directly connect-ed, requiring no elaborate evaluation equipment for redundant structures. At the same time, the device has a low total failure rate and provides high availability.
After all, what good is a safety device that will keep turning off (switch to a safe state) and thereby regularly close down the facility it is meant to monitor?
P22400 is safe and highly available.
Knick Products Comply With UL - What Does That Mean?
Jan 2018
Interface Technology
Functional safety and maximum availability can go together
Feb 2017
Interface Technology
We look forward to hearing from you!
Contact Us
| Function: | Transmission / Insulation of standard signals |
|---|---|
| Input: | 0 ... 20 mA, 4 ... 20 mA |
| Output: | 0 ... 20 mA, 1:1 transmission, 4 ... 20 mA |
| Isolation AC/DC: | up to 600 V |
| Test Voltage: | 5.4 kV AC |
| Power Supply: | Loop powered |
| Cutoff Frequency: | approx. 100 Hz |
| Ambient operating temperature: | –40 ... 70 °C |
| Dimensions (W x L x H): | 12.5 x 99 x 114.5 mm |
| Special features: | Also available as a signal splitter with 2 electrically isolated outputs, For safety circuits up to SIL 3 (EN 61508), up to PL c/PL e (EN 13849-1), High reliability: MTBF of 1106 years, One or two channels per device, Transformer-based isolation of 0(4) ... 20 mA standard current signals |
| Product Category: | Isolated Signal Conditioner |
Downloads
Certificates
Our service
Used in Process or Applications
Related Products
Relevant Blog Posts
Mar 2025
Process Analytics
SE605H Conductivity Sensor with CondCheck
Apr 2023
Process Analytics
Sturdy 2-Electrodes Conductivity Sensor SE625 with Coaxial Electrodes made of Titanium
Jun 2022
Process Analytics
Combined pH- and ORP-Sensor SE555X/*-AMSN
Nov 2021
Process Analytics
SE655X Digital and SE656X Digital - Digital Conductivity Sensors with Ex Certification
May 2021
Process Analytics
New SE656N digital conductivity sensor
Feb 2018
Process Analytics