Product Model
RM4LA32B
Selling Points
- 1Accurate Liquid Level Detection: Detects liquid levels using resistive probes for precise monitoring.
- 2Versatile Applications: Suitable for tank overflow prevention, water tower regulation, and dosing control in mixing processes.
- 324V AC Operation: Operates at 24V AC, ensuring safe and efficient use.
- 4Configurable Functions: Allows for empty or fill functions with adjustable time delay and sensitivity settings.
- 5Reliable Performance: Designed with a transparent, hinged cover to prevent accidental setting changes and ensure reliable operation.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
Range of Product | Harmony Relay | Relay Type | Liquid level control relay |
Product or Component Type | Industrial measurement and control relays | Relay name | RM4-L |
Relay monitored parameters | Detection by resistive probes | time delay | Adjustable 0.1...10 s |
power consumption | 3.1 VA AC | Contacts type and composition | 2 C/O |
Maximum switching voltage | 440 V AC | operating voltage tolerance | 0.85...1.1 Uc |
Output contacts | 2 C/O | Maximum electrode voltage | 24 V AC |
Maximum electrode current | 1 mA | Maximum cable capacity | 0 mF |
Sensitivity scale | 0.25...5 kOhm LS (Low Sensitivity)<br />2.5...50 kOhm St (Standard Sensitivity)<br />25...500 kOhm HS (High Sensitivity) | marking | CE : EMC 89/336/EEC<br />CE : LVD 73/23/EEC |
Overvoltage category | III IEC 60664-1 | [Ui] rated insulation voltage | 500 V IEC |
Supply disconnection value | > 0.1 Uc | Operating position | Any position without derating |
Connections - terminals | Screw terminals, 2 x 1.5 mm²flexible with cable end<br />Screw terminals, 2 x 2.5 mm²flexible without cable end | Tightening torque | 5.3…9.7 lbf.in (0.6…1.1 N.m) |
Mechanical durability | 30000000 cycles | [Ith] conventional free air thermal current | 8 A |
[Ie] rated operational current | 2 A 158 °F (70 °C) 24 V DC-13 IEC 60947-5-1/1991<br />2 A 158 °F (70 °C) 24 V DC-13 VDE 0660<br />3 A 158 °F (70 °C) 115 V AC-15 IEC 60947-5-1/1991<br />3 A 158 °F (70 °C) 115 V AC-15 VDE 0660<br />3 A 158 °F (70 °C) 24 V AC-15 IEC 60947-5-1/1991<br />3 A 158 °F (70 °C) 24 V AC-15 VDE 0660<br />3 A 158 °F (70 °C) 250 V AC-15 IEC 60947-5-1/1991<br />3 A 158 °F (70 °C) 250 V AC-15 VDE 0660<br />0.1 A 158 °F (70 °C) 250 V DC-13 IEC 60947-5-1/1991<br />0.1 A 158 °F (70 °C) 250 V DC-13 VDE 0660<br />0.3 A 158 °F (70 °C) 115 V DC-13 IEC 60947-5-1/1991<br />0.3 A 158 °F (70 °C) 115 V DC-13 VDE 0660 | Switching capacity in mA | 10 mA 12 V |
Switching voltage | 250 V AC | Contacts material | 90/10 silver nickel contacts |
Number of cables | 2 | Width | 0.9 in (22.5 mm) |
Terminals description ISO n°1 | (B1-B2-B3)CO<br />(A1-A2)CO<br />(15-16-18)OC<br />(25-26-28)OC | Output relay state | According to chosen function |
9 mm pitches | 2.5 | Net Weight | 0.364 lb(US) (0.165 kg) |
Electromagnetic compatibility | Electrostatic discharge - test level: 6 kV level 3 (contact discharge) conforming to IEC 61000-4-2<br />Electrostatic discharge - test level: 8 kV level 3 (air discharge) conforming to IEC 61000-4-2 | Standards | EN/IEC 60255-6 |
Product Certifications | CSA<br />UL<br />GL | Ambient Air Temperature for Storage | -40…185 °F (-40…85 °C) |
Ambient air temperature for operation | -4…149 °F (-20…65 °C) | Relative humidity | 15…85 % 3K3 IEC 60721-3-3 |
IP degree of protection | IP20 IEC 60529 terminals)<br />IP50 IEC 60529 casing) | Pollution degree | 3 IEC 60664-1 |
Dielectric test voltage | 2.5 kV | Resistance to electrostatic discharge | 6 kV contact IEC 61000-4-2 level 3<br />8 kV air IEC 61000-4-2 level 3 |
Resistance to electromagnetic fields | 9.1 V/m (10 V/m) IEC 61000-4-3 level 3 | Resistance to fast transients | 2 kV IEC 61000-4-4 level 3 |
Protection against electric shocks | 2 kV level 3 IEC 61000-4-5 | Disturbance radiated/conducted | CISPR 22 - class A<br />CISPR 11 group 1 - class A |
Specifications may be subject to change without notice