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IFM · air humidity sensor
LDH290 is an IFM air humidity sensor (AIR HUMIDITY SENSOR ANALOG).
| Product characteristics | |
| Number of inputs and outputs | Number of analog outputs: 2 |
|---|---|
| Application | |
| Special feature | gold-plated contacts |
| Electrical data | |
| Operating voltage | 12...30 DC [V] |
| Protection class | III |
| Reverse polarity protection | yes |
| Power-on delay time | < 1 [s] |
| Measuring principle | capacitive |
| Inputs / outputs | |
| Number of inputs and outputs | Number of analog outputs: 2 |
| Outputs | |
| Total number of outputs | 2 |
| Output signal | analog signal |
| Number of analog outputs | 2 |
| Analog current output | 4...20 [mA] |
| Max. load | (Ub - 12 V) / 20 mA [Ω] |
| Measuring/setting range | |
| Measuring range | 0...100 [% RH] |
| Measuring range | -40...60 [°C] |
| Accuracy / deviations | |
| Accuracy | 4; (in the range 20...80 % RH) [% RH] |
| Resolution | 0,1 [% RH] |
| Accuracy | ± 1 [K] |
| Resolution | 0.1 [K] |
| Reaction times | |
| Response time | < 30; (T90) [s] |
| Response time | < 300; (T90) [s] |
| Operating conditions | |
| Ambient temperature | -40...70 [°C] |
| Note on ambient temperature | |
| Storage temperature | -40...85 [°C] |
| Note on storage temperature | |
| Protection | IP 20; (only sensor: IP 57) |
| Tests / approvals | |
| EMC | |
| MTTF | 178 [years] |
| UL approval | |
| Mechanical data | |
| Weight | 72.3 [g] |
| Type of mounting | Mounting on DIN rail and panel; (TH35 (EN 60715) / M5) |
| Dimensions | 140 x 40 x 38 [mm] |
| Material | plastics UL94 V-0; light grey |
| Mounting orientation | vertical; connector facing upwards |
| Remarks | |
| Pack quantity | 1 pcs. |
| Electrical connection | |
| Connector | 1 x M12 (EN 61067-2-101); coding: A; Contacts: 4, gold-plated |
Technical data sourced from the official IFM datasheet for LDH290. Verify the nameplate of the installed unit before ordering. — IFM LDH290 official page
Standard (US & Canada, tracked courier): delivered in 5–8 business days. In-stock items are processed within 2–4 business days. USD 25 flat rate on orders under $500.00; free on orders of $500.00 and above.
Express (DHL Express / FedEx International): upgraded expedited delivery in 2–4 business days. The Express surcharge is calculated at checkout based on destination and order weight.
Non-Stock / On-Order items ship on request: dispatch time is confirmed before your order — see our Shipping Policy. Shipping charges and available services are displayed at checkout. See the Shipping Policy for details.
Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use.
This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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