User's Guide _______________________________________________________________________28 ___________________________________________________________________ M211060EN-GPower Supply RequirementsThe operating voltage for the HMP60 and HMP110 series probes must bein the following range:Table 6 Operating Voltage RangesHMP60 / HMP63 / HMP110 / HMP113 /HMP110THMP110D / HMP110REF5 ... 28 VDC (Vout 0 ...1 / 0 ... 2.5 V) 5 ... 28 VDC8 ... 28 VDC (Vout 0 ... 5 / 1 ... 5 V)Current consumption is 1 mA on average, which makes the probes wellsuited for running on battery power. The maximum peak consumption is5 mA.Recommendations- Continuous use over high operating voltage may cause heating.To conserve power and minimize the warming of the probe, use thelowest operating voltage in the allowed range.- Using low impedance loads on the signal outputs increase the currentconsuption by up to 0.5 mA. High impedance loads are recommendedto minimize warming of the probe.- Frequent interrogation of the probe using the RS-485 interface willalso increase current consumption from the average value. Morefrequent interrogation than once per second is not recommended.
