WIKA · Level measurement · Family LF
Submersible pressure sensor
Submersible pressure sensor for level measurement in vessels, storage systems, rivers, lakes, deep wells, and groundwater monitoring, suitable for contaminated and aggressive media.
Range
0…60 mH2O
Output
4 ... 20 mA (2-wire)
Accuracy
≤ ±0.5 % of span (option)
Protection
IP68
CEEACRoHSREACHATEXIECExCSAFMEx ia IIC T4/T5/T6 GaEx ia IIC T4/T5/T6 GbAEx ia IIC, T6 ...T4 GaAEx ia IIC, T6 ...T4 GbAEx ic IIC, T6 ...T4 Gc
Price
From €611
Confirm at order time
Special features
- Suitable for measurements in contaminated and aggressive media
- An optimised discharge behaviour and a large pressure port prevent the instrument from clogging and ensure a minimum maintenance effort
- Can be used in explosion-protected areas
- Developed for wireless applications
Configurator · Step by step
Build a LF-1 for your task
The article number is assembled automatically. If unsure — ask an engineer; we'll match the line's parameters.
Step 1 of 1
Your configuration
- Approvalwithout
- Atmospherewithout
- Unitbar
- Pressure typegauge
- Measuring range0 ... 0.1 bar gauge
- Output signal4 … 20 mA (pressure), 2-wire
- Accuracy1.0% of span
- Case material1.4404 / 316L
- Cable materialPUR
- Unit cable lengthmeter
- Cable length—
- Overvoltage protectionwithout
- Permissible medium temperature-10...+50°C
- other approvalswithout
- Certificateswithout
- Accessories electr. connectionwithout
- Accessories repeater power supplywithout
- Accessories cablewithout
- Accessories process connectionwithout
AI suggestion by parameters
Finish your configuration
Select every option to submit the request.
Identification
| Model | LF-1 |
| Product family | LF |
| Subcategory | submersible pressure sensor |
Measuring range
| Level ranges | 0…1.6 mH2O · 0…2.5 mH2O · 0…4 mH2O · 0…6 mH2O · 0…10 mH2O · 0…16 mH2O · 0…25 mH2O · 0…40 mH2O · 0…60 mH2O · 0…0.1 mH2O · 0…1 mH2O · 0…0.16 mH2O · 0…0.25 mH2O · 0…0.4 mH2O · 0…0.6 mH2O |
Process conditions
| Process temperature | −40…+80 °C |
| Max process pressure | 6 bar |
| Measurement technology | hydrostatic |
Electrical characteristics
| Output signal | 4 ... 20 mA (2-wire) · 4 ... 20 mA + HART (2-wire) · DC 0.1 ... 2.5 V (3-wire, low power) · 2 x 4 ... 20 mA (2 x 2-wire, galvanically isolated) · 2 x DC 0.1 ... 2.5 V (3-wire, low power) · 4 ...20mA+HART® (2-wire) |
| Power supply | DC 8 ... 36 V (varies by output and Ex approval) |
| Electrical connection | Cable outlet with or without conduit, PUR or FEP cable |
Materials
| Wetted parts material | 316L, 318LN, Hastelloy C276, PUR, FEP, FKM, PVDF |
Operating environment
| Ambient temperature | −40…+80 °C |
| IP rating | IP68 |
| Weight | 0.3 kg |
Certifications and approvals
| Certifications | CEEACRoHSREACHATEXIECExCSAFM |
| Explosion protection | Zone 0 gas [II 1G Ex ia IIC T4/T5/T6 Ga]Zone 1 gas [II 2G Ex ia IIC T4/T5/T6 Gb]Ex ia IIC T4/T5/T6 GaEx ia IIC T4/T5/T6 GbClass I, division 1, groups A, B, C, DClass I, zone 0; A/Ex ia IIC; T6 ... T4 GaClass I, zone 1; A/Ex ia IIC; T6 ... T4 GbClass I, zone 2; A/Ex ic IIC; T6 ... T4 GcClass I, zone 0, AEx ia IIC, T6 ... T4 GaClass I, zone 1, AEx ia IIC, T6 ... T4 GbClass I, zone 2, AEx ic IIC, T6 ... T4 GcAEx ia IIC, T6 ...T4 GaAEx ia IIC, T6 ...T4 GbAEx ic IIC, T6 ...T4 Gc |
Additional details
| Datasheet languages | EN, DE |
Tables from datasheet
Gauge pressure
| bar | 0 ... 0.1 | 0 ... 0.16 | 0 ... 0.25 | 0 ... 0.4 | 0 ... 0.6 | 0 ... 1 | 0 ... 1.6 |
|---|---|---|---|---|---|---|---|
| 0 ... 2.5 | 0 ... 4 | 0 ... 6 | |||||
| inWC | 0 ... 50 | 0 ... 100 | 0 ... 150 | 0 ... 250 | |||
| psi | 0 ... 5 | 0 ... 10 | 0 ... 15 | 0 ... 25 | 0 ... 50 | 0 ... 100 | |
| mH 2 O | 0 ... 1 | 0 ... 1.6 | 0 ... 2.5 | 0 ... 4 | 0 ... 6 | 0 ... 10 | 0 ... 16 |
| 0 ... 25 | 0 ... 40 | 0 ... 60 | |||||
| Absolute pressure | |||||||
| bar | 0 ... 1.6 | 0 ... 2.5 | 0 ... 4 | 0 ... 6 | |||
| psi | 0 ... 25 | 0 ... 50 | 0 ... 100 |
Measuring ranges
| Option 1 | -10 ...+50 °C [14 ... 122 °F] |
|---|---|
| Option 2 | -40 ...+80 °C [-40 ...+176 °F] |
Without temperature measurement
| Standard | 4 ... 20 mA(2-wire) |
|---|---|
| Option 1 | 4 ...20mA+HART ® (2-wire) |
| Option 2 | DC 0.1 ...2.5V (3-wire, low power) 1) |
With temperature measurement
| Standard | 2 x 4 ... 20 mA(2 x 2-wire, galvanically isolated) |
|---|---|
| Option 1 | 2 x DC 0.1 ...2.5V (3-wire, low power) 1) |
View all (20)
| Output signal | Standard | With Ex approval |
|---|---|---|
| 4 ... 20 mA(2-wire) | DC 8 ...36V | DC 9 ...30V |
| 4 ...20mA+HART ® (2-wire) | DC 12 ...36V | DC 12 ...30V |
| DC 0.1 ...2.5V (3-wire, low power) | DC 3.6 ...36V | - |
| 2 x 4 ... 20 mA(2 x 2-wire, galvanically isolated) | DC 8 ...36V | DC 9 ...30V |
| 2 x DC 0.1 ...2.5V (3-wire, low power) | DC 3.6 ...36V | - |
| Accuracy 1) | Non-linearity (per IEC 61298-2) BFSL | |
|---|---|---|
| Standard | ≤ ±1 %of span | ≤ ±0.5 %of span |
| Option | ≤ ±0.5 %of span | ≤ ±0.25 %of span |
Accuracy after turndown 5:1 via HART ®
| Standard | ≤ ±1.25 %of scaled span |
|---|---|
| Option | ≤ ±0.75 %of scaled span |
Permissible temperature ranges
| Medium | Standard | -10 ...+50 °C [14 ... 122 °F] |
|---|---|---|
| Option | -40 ...+80 °C [-40 ...+176 °F] | |
| Ambient | Standard | -40 ...+80 °C [-40 ...+176 °F] |
| Storage | Standard | -30 ...+80 °C [-22 ...+176 °F] |
| Approval | Marking |
|---|---|
| ATEX | Zone 0 gas [II 1G Ex ia IIC T4/T5/T6 Ga] Zone 1 gas [II 2G Ex ia IIC T4/T5/T6 Gb] |
| IECEx | Zone 0 gas [Ex ia IIC T4/T5/T6 Ga] Zone 1 gas [Ex ia IIC T4/T5/T6 Gb] |
| CSA | Class I, division 1, groups A, B, C, D Class I, zone 0; A/Ex ia IIC;T6 ...T4 Ga Class I, zone 1; A/Ex ia IIC;T6 ...T4 Gb Class I, zone 2; A/Ex ic IIC;T6 ...T4 Gc (see control drawing 14136138) |
| FM | Class I, division 1, groups A, B, C, D Class I, zone 0, AEx ia IIC, T6 ...T4 Ga Class I, zone 1, AEx ia IIC, T6 ...T4 Gb Class I, zone 2, AEx ic IIC, T6 ...T4 Gc (see control drawing 14136138) |
| Ambient and media temperature range (Pi = 600 mW) | Ambient and media temperature range (Pi = 800 mW) | Temperature code |
|---|---|---|
| -40 ≤T a ≤ +59 °C | -40 ≤T a ≤ +52 °C | T6 |
| -40 ≤T a ≤ +74 °C | -40 ≤T a ≤ +67 °C | T5 |
| -40 ≤T a ≤ +80 °C | -40 ≤T a ≤ +76 °C | T4 - T1 |
| Ambient and media temperature range (Pi = 600 mW) | Temperature code |
|---|---|
| -40 ≤T a ≤ +59 °C | T6 |
| -40 ≤T a ≤ +74 °C | T5 |
| -40 ≤T a ≤ +80 °C | T4 - T1 |
| Standard | Option (high-resistance) | |
|---|---|---|
| Case | 316L | 318LN |
| Sensor element | 316L | Hastelloy C276 |
| Cable | PUR | FEP |
| Sealing | FKM | FKM |
| Protection cap | PVDF | PVDF |
Cable outlet
| Standard | Cable outlet without conduit |
|---|---|
| Option | Cable outlet with conduit |
Cable lengths
| Standard | Metres (m) | 3 | 5 | 10 | 15 | 20 | 25 | 30 | 40 | 50 |
|---|---|---|---|---|---|---|---|---|---|---|
| Feet (ft) | 10 | 20 | 30 | 40 | 50 | 75 | 100 | 125 | 150 | |
| Option | Metres (m) | For current output, freely definable up to 1,000m | ||||||||
| For voltage output, freely definable up to 200m | ||||||||||
| Feet (ft) | For current output, freely definable up to 3,250 ft | |||||||||
| For voltage output, freely definable up to 650 ft |
4 ... 20 mA, 4 ... 20 mA + HART ® (2-wire)
| U+ | brown (BN) |
|---|---|
| U- | blue (BU) |
| Shield | grey (GY) |
2 x 4 ... 20 mA (2 x 2-wire, galvanically isolated)
| U+ (pressure sensor) | brown (BN) |
|---|---|
| U- (pressure sensor) | blue (BU) |
| U+ (temperature sensor) | green (GN) |
| U- (temperature sensor) | white (WH) |
| Shield | grey (GY) |
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity ■ EMCdirective EN 61326 emission (group 1, class B) and immunity (industrial application) ■ RoHS directive ■ ATEX directive 1) - Ex i Zone 0 gas [II 1G Ex ia IIC T4/T5/T6 Ga] Zone 1 gas [II 2G Ex ia IIC T4/T5/T6 Gb] | European Union | |
| IECEx 1) Hazardous areas - Ex i Zone 0 gas [Ex ia IIC T4/T5/T6 Ga] Zone 1 gas [Ex ia IIC T4/T5/T6 Gb] | International | |
| FM 1) Hazardous areas Class I, division 1, groups A, B, C, D Class I, zone 0, AEx ia IIC, T6 ...T4 Ga Class I, zone 1, AEx ia IIC, T6 ...T4 Gb Class I, zone 2, AEx ic IIC, T6 ...T4 Gc (see control drawing 14136138) | USA | |
| CSA ■ Safety (e.g. electr. safety, overpressure, ...) ■ Hazardous areas 1) Class I, division 1, groups A, B, C, D Class I, zone 0; A/Ex ia IIC;T6 ...T4 Ga Class I, zone 1; A/Ex ia IIC;T6 ...T4 Gb Class I, zone 2; A/Ex ic IIC;T6 ...T4 Gc (see control drawing 14136138) | USA and Canada | |
| EAC ■ EMCdirective | Eurasian Economic Community |
DC 0.1 ... 2.5 V (3-wire, low power)
| U+ | brown (BN) |
|---|---|
| U- | blue (BU) |
| S+ | black (BK) |
| Shield | grey (GY) |
2 x DC 0.1 ... 2.5 V (3-wire, low power)
| U+ | brown (BN) |
|---|---|
| U- | blue (BU) |
| S+ (pressure sensor) | black (BK) |
| S+ (temperature sensor) | green (GN) |
| Shield | grey (GY) |
| Description | Order number |
|---|---|
| Additional weight The additional weight increases the dead weight of the submersible pressure sensor. It simplifies the lowering in monitoring wells, narrow shafts and deep wells. It effectively reduces negative environmental influences of the measuring medium (e.g. turbulent flows) on the measuring result. Stainless steel 316L, approx. 300 g [0.661 lbs], length 115 mm[4.53 in] | 14131008 |
| Cable strain relief clamp The cable strain relief clamp ensures easy and secure mechanical fastening of the submersible pressure sensor's cable. It serves to guide the cable to prevent mechanical damage and to reduce the action of tensile stresses. | 14052336 |
| Cable box The cable socket, with IP67 ingress protection and waterproof ventilati- on element, provides a moisture-free electrical termination for the sub- mersible pressure sensor. It should be mounted in a dry environment, outside any shafts or vessels, or directly in the switch cabinet. | 14052339 |
| Not suitable for hazardous areas! Intrinsically safe repeater power supply, model IS Barrier Input 0/4 ...20 mA, supplying and non-supplying Bidirectional HART ® signal transmission For details see data sheet AC 80.14 | 14117118 |
| Indication and programming module HART ® DIH50 and DIH52 5-digit display, 20-segment bar graph, without separate power supply, with additional HART ® functionality. Automatic adjustment of measuring range and span. 'Secondary-master' functionality: Setting the measuring range and unit of the connected transmitter using HART ® standard commands possib- le. Optionally explosion protection per ATEX. | on request |
| HART ® modem with USB, RS-232 or Bluetooth interface For scaling the measuring range using a PC via the HART protocol, a HART modem with USB, RS-232 or Bluetooth interface is available. The modem communicates with all registered HART field instruments and can be used with the most popular HART-compatible software programs. | 7957522 (RS-232 interface) 11025166 (USB interface) 11364254 (Bluetooth interface) |
Application areas not described yet
Describe your operating conditions — our engineer will suggest a model and use case.
Couldn't find the answer in the documentation? An engineer will reply within a business day.
Ask an engineer →All variants · Article table
10 standard articles of family LF
If you know the code — pick directly. If not — use the configurator in mode “01”.
Stock:
SKUConfigurationPriceStockAction
LF-1ZZZZZ-BG210-2DA-AM0000Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0003Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0005Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0010Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0015Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0020Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0025Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0030Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0040Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
LF-1ZZZZZ-BG210-2DA-AM0050Z2BZZ-ZZZZZZ-ZApproval: Z · Atmosphere: ZZZZ · Unit: B+ 16 moreOn requestOn orderRequest →
Showing 10 of 10. Price on request — an engineer will quote your configuration.