The operating voltage for the HMP60 and HMP110 series probes must be in the following range:
| HMP60 / HMP63 / HMP110 analog / HMP113 / HMP110T | HMP110REF / HMP110 digital |
|---|---|
| 5 ... 28 VDC (Vout 0 ...1 / 0 ... 2.5 V) | 5 ... 28 VDC |
| 8 ... 28 VDC (Vout 0 ... 5 / 1 ... 5 V) |
Current consumption is 1 mA on average, which makes the probes well suited for running on battery power. The maximum peak consumption is 5 mA.
Recommendations
- Continuous use over high operating voltage may cause heating. To conserve power and minimize the warming of the probe, use the lowest operating voltage in the allowed range.
- Using low impedance loads on the signal outputs increase the current consumption by up to 0.5 mA. High impedance loads are recommended to minimize warming of the probe.
- Frequent interrogation of the probe using the RS-485 interface will also increase current consumption from the average value. More frequent interrogation than once per second is not recommended.