These analyzers / transmitters are 2-wire 24 VDC operated. Installation costs are less because no 115/230 VAC is needed at the transmitter field location. They require a separate 24 VDC supply and typically a 4-20 mA receiver.
The model 453-9M comes in an explosion proof barrel housing. Useful even in sewer plant environments it is always operated with the case sealed. Settings are viewed, functions tested, calibration updated without opening the housing, by using a magnetic stylus through the glass.
The model 453-9M is not just a transmitter, it is a full conductivity analyzer! You get full sensor functions, standardize (cell constant calibration) and auto range adjustment, plus independent, program-adjustable 4-20 mA zero and span. Even with old deteriorated sensors, you enjoy higher accuracy over broad conductivity ranges. This analyzer corrects for sensor condition to give corrected precision readings.
Easy Program Does What You Expect
- Auto calibration
- Self- and sensor diagnostics
- Output hold during calibration
- Reversible, programmable 4-20 mA zero and span
- Operated with a magnetic stylus through the glass
- Program remembers what you were doing
- Instant key return to sample display
- Easy to operate without menu or manual
- LCD displays conductivity, temperature, mA output and calibration status
Easy Maintenance
- Reliable, separately powered and input-output isolated circuit prevents computer interface problems
- Calculates conductivity sensor cell constant
- Durable IP65 (Nema 4X) housing withstands hosing down. Survives acid and caustic fumes, humidity, etc.
Use Any Style of Electrode
- Submersible
- Flow
- Insertion / retractable
Use Either of the Following
- Local digital indication
- 4-20 mA signal
Note: The Model 453-9M is 24 VDC two-wire loop-powered and requires a source of 24 VDC power somewhere in the loop. The previous generation, Model 453-9 infra-red operation used a model 510 remote control which is now obsolete. The Model 453-9M uses magnetic switches beneath the control window that can be operated with a magnetic stylus through the glass, and eliminates the need for a remote control while retaining the explosion-proof rating of the enclosure.
