CROUZET CONTROL
Level control Relays HNM, HNE
The control relays HNM and HNE are used for level control.
HNM: Used for conducting liquids. Measures levels with resistive sensors. The principle is based on measurement of the apparent resistance between two recessed electrodes. When this value is less than the limit value indicated at the front, the relay output changes over. To avoid electrolysing, AC is applied to the electrodes.
HNE: *Now obsolete* Controls the levels of non-conducting and conducting materials using input/output sensors (NPN, PNP) that detect high or low level. Green LED indicates supply voltage and yellow LED indicates active relay output. If the LEDs flash, this indicates incorrect setting.
A rotary switch on the front is used for selecting the measurement range and filling/emptying function. With another switch, the number of levels can be set (1 or 2) and the type of delay if the function position for 1 level has been selected. The positions of these switches are registered when the operating voltage is switched on. If the switch is in the wrong position, the relay will remain deactivated and the LEDs will flash to indicate incorrect setting. If the switch position is changed during operation, all LEDs begin to flash but the unit will continue to function normally with the function that was set at the most recent power connection. The LEDs return to normal function when the switch has been returned to its original position, which was set before the first power connection. Green LED (Un) indicates supply voltage OK. Yellow LED (R) indicates active relay output.
- Control of one or two levels
- Filling/emptying function
- HNM resistive sensor
- HNE digital sensor * obsolete
Selected variant
Specifications
| Sensor Cable Length Max | 100 m |
|---|---|
| Time Delay Start | 0.6 s |
| Time Delay On Crossing The Threshold | 0,1-5s |
| Output | Relay 2 pole C/O |
| Breaking capacity | 5A, 250V AC/DC |
| Supply voltage | 24-240V AC |
| IP Class Connection | IP20 |
| IP Class Housing | IP30 |
| Temperature range from | -20 °C |
|---|---|
| Temperature range to | 50 °C |
| Temperature range bearing, from | -40 °C |
| Temperature range bearing, to | 70 °C |
| Weight | 115 g |
| Approvals | CE, CSA, RoHS, UL |
| Power Consumption | 5 VA / 1.5 W |
Downloads
Product description
The control relays HNM and HNE are used for level control.
HNM: Used for conducting liquids. Measures levels with resistive sensors. The principle is based on measurement of the apparent resistance between two recessed electrodes. When this value is less than the limit value indicated at the front, the relay output changes over. To avoid electrolysing, AC is applied to the electrodes.
HNE: *Now obsolete* Controls the levels of non-conducting and conducting materials using input/output sensors (NPN, PNP) that detect high or low level. Green LED indicates supply voltage and yellow LED indicates active relay output. If the LEDs flash, this indicates incorrect setting.
A rotary switch on the front is used for selecting the measurement range and filling/emptying function. With another switch, the number of levels can be set (1 or 2) and the type of delay if the function position for 1 level has been selected. The positions of these switches are registered when the operating voltage is switched on. If the switch is in the wrong position, the relay will remain deactivated and the LEDs will flash to indicate incorrect setting. If the switch position is changed during operation, all LEDs begin to flash but the unit will continue to function normally with the function that was set at the most recent power connection. The LEDs return to normal function when the switch has been returned to its original position, which was set before the first power connection. Green LED (Un) indicates supply voltage OK. Yellow LED (R) indicates active relay output.
Add product as a new cart row
You already added this product. Choose whether to increase quantity on the existing row or add the product as a new row.
Related
An effective solution Delcon CRA5
Delcon's CRA5 plug-in relay revolutionizes the control of difficult-to-handle DC loads. Inductive loads, frequent switching, and high DC voltages are a piece of cake for these relays.
Push-In sockets that save both time and space
ComatReleco has launched a new series of push-in sockets specifically designed for time and space savings.
New “all-round” Syr-Line time relays by Crouzet
Crouzet has honoured the strong Syrelec time relay traditions established in the 1980s, first by Cronos and Cronos 2 series. Now, Crouzet presents the compact and extremely versatile Syr-Line series.
Relay School - Lesson 1
Can you distinguish between a bifurcated contact and a normal contact at a glance?
Quality solutions for motion controls
TER - Tecno Elettrica Ravasi, is our Italian supplier specializing in the manufacture of control stations. TER has over 60 years of experience in the manufacture of control stations.
LOOP Heater for optimal heat distribution
Thanks to their loop design, LOOP heating elements offer excellent heating performance and ensure optimal heat distribution. Read more now!
