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Data logger for general plant maintenance

Data logger for general plant maintenance

(OP)
Have a friend who is a maint. manager at a large municipal waste water treatment facility. He is looking to acquire a data logger and asked me if I had any experience w/ a Fluke 1736. I haven't had to use a data logger in years and years.
From what I gather the primary use would be for monitoring motor currents/voltages. These motors range in size from 50 to 450 h.p., all on soft starts, all 480v. To aid in troubleshooting intermittent soft start faults, 480v supply issues, etc someone had suggested this unit.
Does anyone have any pros/cons or general comments about this model-cost,functionality etc. I have never seen one.

RE: Data logger for general plant maintenance

For soft-starters, especially such with PWM, the bandwidth of the 1736 is rather limited. The 1738 is slightly better, I think, but sampling rate seems to be around 10 kSa/s and that is not enough if you want to study PWM in detail.

They are both geared more towards PQ than soft starter measurements. They simply don't tell the whole truth. There are things like PICO Scopes that do a better job in that respect. They are also available at a good price. Rigol has a few good instruments and I think that Keysights new low cost series is Rigol under the Keysight label.

Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

RE: Data logger for general plant maintenance

(OP)
I will look into those models- reminds me that the last time I used a data logger the "graphics display" was a strip chart recorder

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