Vaisala DL4000 Universal Input Data Logger
The Vaisala DL4000 records standard current or voltage signals from industrial transmitters and sensors. It allows measurements such as differential pressure, flow, fluid level, pH, electrical properties, moisture and gas concentration to be monitored alongside temperature and humidity within a Vaisala viewLinc system.
The logger is available with one, two or four channels. Separate models accept 0–20 mA, 0–5 V DC or 0–10 V DC inputs. Each channel can be scaled in engineering units so users see the actual process value rather than the raw electrical signal.
Connected to the Vaisala viewLinc Continuous Monitoring System, the DL4000 provides historical and real-time data, remote alarms and controlled reporting. It can also be used with Vaisala vLog for standalone graphing and reporting.
Closest Substitute: VDL200 with ANP115
The closest current substitute for many DL4000 applications is the Vaisala VDL200 PoE Data Logger used with an ANP115 analog input probe. The ANP115 allows a compatible current or voltage signal to be incorporated into the current viewLinc platform.
Not always a direct one-for-one replacement: A DL4000 can provide up to four dedicated analog channels. Confirm the number of signals, input ranges, transmitter power requirements and network arrangement before migrating to VDL200 and ANP115.
What Can the DL4000 Monitor?
The DL4000 does not measure the physical parameter directly. It records the standard electrical output from a compatible transmitter, then converts that signal into the required engineering range.
- Differential pressure: Cleanrooms, isolation rooms, filters and air-handling systems.
- Flow: Liquid, gas or air flow transmitters with a compatible analog output.
- Level: Tanks, vessels and storage systems.
- Gas concentration: Fixed transmitters for CO₂ or other process gases.
- Moisture and dew point: Transmitters monitoring compressed air, oils or industrial gases.
- Electrical and process values: Conductivity, pH, particles and other parameters converted to a standard analog signal.
Choosing the Correct Input Model
Check before ordering: The DL4000 model is factory-configured for one input type. Confirm the transmitter output, number of channels, scaling range, engineering unit and power arrangement before selecting the model code.
How Signal Scaling Works
Each channel is configured with the transmitter’s electrical and measurement ranges. For example, a differential-pressure transmitter scaled from 0 to 100 Pa with a 0–10 V output can be displayed, alarmed and reported by viewLinc directly in pascals.
Recording at the Measurement Point
- Network-independent recording: Measurements continue to be stored if network communication is interrupted.
- Battery-backed operation: The internal battery supports autonomous logging during a mains-power interruption.
- Gap-free records: Stored data can be transferred to viewLinc after communication is restored.
- Flexible recording intervals: Sampling can be selected from once every 10 seconds to once per day.
- Controlled memory behaviour: Choose FIFO wrap mode or stop recording when memory is full.
DL4000 Recording Capacity
viewLinc and System Connectivity
The complete viewLinc system can support records and workflows designed to meet FDA 21 CFR Part 11 and EU GMP Annex 11 requirements. Compliance depends on the complete system configuration, validation and operating procedures.
Technical Specifications
DL4000 or Another Vaisala Logger?
Vaisala DL4000 Supplier and System Integrator in Malaysia
Seacom Process Instruments supplies and supports the Vaisala DL4000 Universal Input Data Logger in Malaysia for pharmaceutical facilities, cleanrooms, laboratories, hospitals, warehouses, semiconductor manufacturing, utilities and other critical industrial environments. We can also assist existing DL4000 users with migration planning for the VDL200 and ANP115 platform.
Our team can assist with transmitter and input selection, signal scaling, monitoring-point planning, power and network architecture, viewLinc system integration, installation, commissioning, alarm configuration, calibration planning and GxP validation documentation.
Contact Seacom with the measured parameter, transmitter model, electrical output, engineering range, number of channels, sampling interval, network constraints and validation expectations. We can check whether a DL4000 is still appropriate or prepare a suitable VDL200 and ANP115 configuration.
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