WIKA · Level measurement · Family RLT
Reed-chain level sensor
Level sensor for industrial applications with reed-chain technology, suitable for oil, water, diesel, and refrigerants.
Range
0.15…1.5 m
Output
Resistance (3-wire potentiome…
Accuracy
3 mm to 24 mm depending on configuration
Protection
IP65
RoHSEMC EN 61326CE
Price
On request
Depends on configuration
Description
The model RLT-1000 level sensor has been developed for measuring the levels of liquids. The stainless steel used is suitable for a multitude of media, such as, for example, oil, water, diesel and refrigerants.
Special features
- Media compatibility: Oil, water, diesel, refrigerants and other liquids
- Permissible medium temperature range: -30 ... +120 °C [-22 ... +248 °F]
- Output signal: Resistance in a 3-wire potentiometer circuit, current output 4 ... 20 mA
- Measuring principle: Reed-chain technology
- Accuracy, resolution: 24 mm [0.9 in], 12 mm [0.5 in], 10 mm [0.4 in], 6 mm [0.2 in] or 3 mm [0.1 in]
Identification
| Model | RLT-1000 |
| Product family | RLT |
| Subcategory | Float |
Measuring range
| Level ranges | 0.15…1.5 m |
Process conditions
| Process connection | G 1G 1 ½G 2Flange DN 50, form B per DIN 2527/EN 1092, PN 16G ⅜G ½G ¼G3/8BG1¼B |
| Process temperature | −30…+120 °C |
| Max process pressure | 40 bar |
| Measurement technology | float |
Electrical characteristics
| Output signal | Resistance (3-wire potentiometer) · 4...20 mA |
| Power supply | DC 12 ... 32 V |
| Electrical connection | Angular connector DIN 175301-803 A, Circular connector M12 x 1 (4-pin), Cable outlet, Connection housing |
Materials
| Wetted parts material | Stainless steel 1.4571 (316Ti), Buna / NBR, Float material varies: 1.4571 (316Ti), Buna/NBR |
Operating environment
| Ambient temperature | −30…+80 °C |
| IP rating | IP65 |
Certifications and approvals
| Certifications | RoHSEMC EN 61326CE |
Additional details
| Datasheet languages | EN |
Tables from datasheet
Level sensor, model RLT-1000
| Measuring principle | Reed-chain technology with optional analogue amplifier | |
|---|---|---|
| Measuring rangeM | The measuring range is determined from the selected guide tube length L and the position of the 100 %mark. For dimensions see drawing | |
| Guide tube length L | 150 ... 1,500 mm[6 ... 59 in], greater lengths on request | |
| Output signal | ■ Variable resistance The overall resistance of the reed chain is approx. 1 ... 10 kΩ, depending on the measuring range Max. voltage < DC 40V ■ Current output, 4 ...20 mA, 2-wire Power supply:DC 12 ...32V Load in Ω: ≤ (power supply - 12 V) / 0.02 A | |
| Accuracy, resolution | ■ 24 mm[0.9 in] 1) ■ 12 mm[0.5 in] 2) ■ 10 mm[0.4 in] 3) ■ 6 mm[0.2 in] 2) ■ 3 mm[0.1 in] 2) | |
| Mounting position | Vertical ±30° | |
| Process connection | ■ G1, installation from outside ■ G1½, installation from outside ■ G2, installation from outside ■ Flange DN 50, form B per DIN 2527/EN 1092, PN 16, installation from outside ■ G⅜, installation from inside 4) ■ G½, installation from inside 4) | |
| Material ■ Wetted ■ Non-wetted | Process connection, guide tube: Stainless steel 1.4571 (316Ti) Case: Stainless steel 1.4571 (316Ti) | Float:See table on page 3 Electrical connection:See table below |
| Permissible temperatures ■ Medium ■ Ambient ■ Storage | -30 …+80 °C [-22 …+176 °F], option: -30 …+120 °C [-22 …+248 °F] 5) -30 …+80 °C [-22 …+176 °F] -30 …+80 °C [-22 …+176 °F] |
| Electrical connections 6) | Ingress protection 7) | Material | Cable length |
|---|---|---|---|
| Angular connector DIN 175301-803 A | IP65 | PA | - |
| Circular connector M12 x 1 (4-pin) | IP65 | TPU, brass | |
| Cable outlet | IP67 | PVC | ■ 2 m[6.5 ft] ■ 5 m[16.4 ft] other lengths on request |
| Cable outlet | IP67 | PUR | |
| Cable outlet | IP67 | Silicone | |
| Connection housing 'standard' Dimensions: 75 x 80x57mm [3.0 x 3.1 x 2.2 in] For cable diameter: 5 ...10mm [0.2 ... 0.4 in] | IP66 | Aluminium, glands from polyamide, brass, stainless steel | - |
| Connection housing 'compact' Dimensions: 58 x 64x36mm [2.3 x 2.5 x 1.4 in] For cable diameter: 5 ...10mm [0.2 ... 0.4 in] | IP66 |
| Float | Form | Outer diameter∅D | Height H | Operating pressure | Medium temperature | Density | Material |
|---|---|---|---|---|---|---|---|
| Cylinder 1) | 44 mm[1.7 in] | 52 mm[2.0 in] | ≤ 16 bar [≤ 232 psi] | ≤ 120 °C [≤ 248 °F] | ≥ 750 kg/m³ [46.8 lbs/ft³] | 1.4571 (316Ti) | |
| H | Cylinder 2) | 30 mm[1.2 in] | 36 mm[1.4 in] | ≤ 10 bar [≤ 145 psi] | ≤ 80 °C [≤ 176 °F] | ≥ 850 kg/m³ [53.1 lbs/ft³] | 1.4571 (316Ti) |
| ∅D | Cylinder | 25 mm[1.0 in] | 20 mm[0.8 in] | ≤ 16 bar [≤ 232 psi] | ≤ 80 °C [≤ 176 °F] | ≥ 750 kg/m³ [46.8 lbs/ft³] | Buna / NBR |
| Sphere 3) | 52 mm[2.0 in] | 52 mm[2.0 in] | ≤ 40 bar [≤ 580 psi] | ≤ 120 °C [≤ 248 °F] | ≥ 750 kg/m³ [46.8 lbs/ft³] | 1.4571 (316Ti) |
Angular connector DIN 175301-803 A
| Variable resistance | Current output, 4 ... 20 mA, 2-wire | |||
|---|---|---|---|---|
| Overall resistance | Pin 2 / 3 | U + | Pin 1 | |
| 100 ...0% | Pin 1 / 3 | U- | Pin 2 | |
| 0 ...100% | Pin 1 / 2 |
View all (16)
Circular connector M12 x 1 (4-pin)
| Variable resistance | Current output, 4 ... 20 mA, 2-wire | |||
|---|---|---|---|---|
| Overall resistance | Pin 3 / 4 | U+ | Pin 1 | |
| 100 ...0% | Pin 1 / 3 | U- | Pin 4 | |
| 0 ...100% | Pin 1 / 4 |
Cable outlet
| Variable resistance | ||
|---|---|---|
| 100 ...0% | white / brown | |
| 0 ...100% | brown / green |
Aluminium case
| Variable resistance | Current output, 4 ... 20 mA, 2-wire | |||
|---|---|---|---|---|
| Overall resistance | TerminalW1/W3 | U+ | Terminal U+ | |
| 100 ...0% | TerminalW1/W2 | U- | Terminal U- | |
| 0 ...100% | TerminalW2/W3 |
Electrical safety
| Reverse polarity protection | U+ vs. U- |
|---|---|
| Insulation voltage | DC 1,500V |
| Overvoltage protection | DC 40V |
| Process connection | Outer diameter float∅D | |||
|---|---|---|---|---|
| ∅30 mm[1.2 in] | ∅44 mm[1.7 in] | ∅52 mm[2.0 in] | ∅25 mm[1.0 in] | |
| G 1 (from outside) | 35 mm[1.4 in] | - | - | - |
| G 1 ½(from outside) | 35 mm[1.4 in] | 45 mm[1.8 in] | - | 25 mm[1.0 in] |
| G 2 (from outside) | 40 mm[1.6 in] | 50 mm[2.0 in] | 50 mm[2.0 in] | 25 mm[1.0 in] |
| Flange (from outside) | 20 mm[0.8 in] | 30 mm[1.2 in] | 30 mm[1.2 in] | 5 mm[0.2 in] |
| G ¼ B (from inside) | 35 mm[1.4 in] | 40 mm[1.6 in] | 40 mm[1.6 in] | 20 mm[0.8 in] |
| G ⅜B(from inside) | 35 mm[1.4 in] | 40 mm[1.6 in] | 40 mm[1.6 in] | 20 mm[0.8 in] |
| G ½B(from inside) | 35 mm[1.4 in] | 45 mm[1.8 in] | 45 mm[1.8 in] | 20 mm[0.8 in] |
| Dead band | Outer diameter float∅D | |||
|---|---|---|---|---|
| ∅30 mm[1.2 in] | ∅44 mm[1.7 in] | ∅52 mm[2.0 in] | ∅25 mm[1.0 in] | |
| T | 35 mm[1.4 in] | 45 mm[1.8 in] | 45 mm[1.8 in] | 45 mm[1.8 in] |
| G | L 1 | Spanner width |
|---|---|---|
| G1 | 16 mm[0.63 in] | 41 mm[1.6 in] |
| G1½ | 18 mm[0.71 in] | 30 mm[1.2 in] |
| G2 | 20 mm[0.79 in] | 36 mm[1.4 in] |
| G | L 1 | Spanner width |
|---|---|---|
| G ¼ B | 12 mm[0.47 in] | 19 mm[0.7 in] |
| G⅜B | 12 mm[0.47 in] | 22 mm[0.9 in] |
| G½B | 14 mm[0.55 in] | 27 mm[1.1 in] |
Circular connector M12 x 1 with moulded cable
| Description | Temperature range | Cable diameter | Cable length | Order number | |
|---|---|---|---|---|---|
| Straight version, cut to length, 4-pin, PUR cable, UL listed, IP67 | -20 ...+80 °C [-4 ...+176 °F] | 4.5 mm[0.18 in] | 2 m[6.6 ft] | 14086880 | |
| 5 m[16.4 ft] | 14086883 | ||||
| 10 m[32.8 ft] | 14086884 | ||||
| Angled version, cut to length, 4-pin, PUR cable, UL listed, IP67 | -20 ...+80 °C [-4 ...+176 °F] | 4.5 mm[0.18 in] | 2 m[6.6 ft] | 14086889 | |
| 5 m[16.4 ft] | 14086891 | ||||
| 10 m[32.8 ft] | 14086892 |
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity ■ EMCdirective EN 61326 emission (group 1, class B) and interference immunity (industrial application) ■ RoHS directive | European Union |
| Logo | Description |
|---|---|
| - | China RoHS directive |
| Replaced model | Current model | Description |
|---|---|---|
| MG01 | RLT-1000 | Level sensor, stainless steel, terminal housing |
| MG02 | RLT-1000 | Level sensor, stainless steel, cable outlet |
| MG03 | RLT-1000 | Level sensor, stainless steel, connector |
| MG05 | RLT-2000 | Level sensor, plastic, terminal housing |
| MG06 | RLT-2000 | Level sensor, plastic, cable outlet |
| MG07 | RLT-2000 | Level sensor, plastic, connector |
| MG09 | RLT-1000 | Level sensor, stainless steel, terminal housing, accuracy/resolution 3 or6mm |
| MG10 | RLT-1000 | Level sensor, stainless steel, connector, accuracy/resolution 3 or6mm |
| MG11 | RLT-2000 | Level sensor, plastic, terminal housing, accuracy/resolution 3 or6mm |
| MG12 | RLT-2000 | Level sensor, plastic, connector, accuracy/resolution 3 or6mm |
| MG13 | RLT-1000 | Compact level sensor, stainless steel, terminal housing |
| MG14 | RLT-1000 | Compact level sensor, stainless steel, connector |
| TN 200 | RLT-3000 | Level sensor, stainless steel, 4 …20mAtemperature output signal |
| TN 240 | RLT-3000 | Level sensor, stainless steel, Pt100 temperature output signal |
Industry
Machinery
Level measurement of liquids in machine building · Control and monitoring tasks for hydraulic power packs, compressors and cooling systems
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