- Provides short circuit protection for the non-replaceable 1/4A fuses potted
inside Rel-Tek and other I.S. safety barriers.
- Eliminates costly, difficult to obtain, low current fuses.
- Maximizes barrier throughput voltage by keeping the output voltage on high
side of zener tolerances.
- Switchable 50/85/95/130 mA output current level accommodates a variety
of barriers and sensors -- without overload.
- Terminates 4-20 mA sensor signal with only 23.7 ohms. This eliminates the
analog termination resistor (usually 50-250 ohms) from the barrier voltage
drop budget.
- Re-generates a secondary analog signal, faithfully tracking the primary
sensor output with 1% accuracy, including linearity.
- Provides output signal options: switchable for 4-20 mA current loop: 0.2-1
VDC or 1-5 VDC (non-isolated).
- Has analog driver circuit which compensates for variable external line
and termination resistances, e.g. 0-750 ohms.
- Accepts most common power supply voltages, 12-30 VDC.
- Small real estate (0.5x1"), replaces a 10mm fuse, single #6
screw attaches at base. Pigtail leads provide simple hookup.
- Eliminates multiple voltage regulators normally used to protect zener barriers.
No more tedious voltage adjustments to make.
- Improves installation safety by helping maintain proper operation of the
sensor throughout its entire scale/range.
| Product | Code: | Model |
| Current regulator (50/85/95/130ma) | 5.7430xxx | CRxxx |
| Current Regulator and Signal Regenerator | 5.7405 | CRSR-101 |
Output signal mode (referenced to negative supply).
S1 OFF & S2 OFF 4-20 mA output
S1 OFF & S2 ON 1-5 VDC output
S1 ON & S2 OFF 0.2-1 VDC output
S1 ON & S2 ON not used
Regulated current level (into barrier)
S3 OFF & S4 OFF 50 mA (CO/O2/T/DP/RH/smoke)
S3 OFF & S4 ON 85 mA (general use)
S3 ON & S4 OFF 95 mA (methane)
S3 ON & S4 ON 130 mA (air velocity, section alarms, etc)
