Product Datasheet

Overview

Key platform fit

• Pressure and temperature monitoring in one field-mounted sensor.
• Configurable telemetry with adjustable measurement cadence, heartbeat interval and alarm thresholds.
• Rechargeable LiPo battery options for long autonomous operation.
• Suitable for gas, water, heat and general industrial utility points.

Typical applications

• Gas distribution and pressure-reduction stations.
• Water supply networks, pumping stations and water-treatment systems.
• Heat supply systems, boiler rooms and district-heating substations.
• Hydraulic and pneumatic systems, including selected oil and fuel applications.

Operating logic

The sensor measures locally at a configurable interval. If the measured values remain within configured thresholds, the device returns to a low-power state and reports according to the heartbeat schedule. If a pressure or temperature threshold is exceeded, event-driven transmission starts and the dispatcher receives an alarm notification.

Process media and installation summary

VADTel-SENS is intended for media compatible with stainless steel AISI 316L / AISI 304, including gases, steam, water and mildly aggressive liquids. The device is mounted similarly to a pressure gauge; pressure should preferably be introduced from below, with measures taken against vibration, severe pulsation, condensation and freezing where relevant.

Documented pilot-operation evidence

Published pilot reports describe approximately 4,000 server sessions in 7 months on one low-pressure unit and approximately 10,000 sessions in 17 months on another, without battery replacement during the test period.

Technical specifications

Measurement

Telemetry & control

Power

Environmental & mechanical

Available pressure ranges

• Gauge: low-pressure gas-network variant and 0–40 kPa version.
• Absolute: 0–160 kPa, 0–400 kPa, 0–600 kPa, 0–1.0 MPa, 0–1.6 MPa, 0–2.5 MPa, 0–4.0 MPa.
• Custom ranges up to 60 MPa on request.

Low-range source materials reference both 5 kPa and 7 kPa variants. Confirm the exact low-pressure range in the RFQ or order sheet.

Configuration options

• Accuracy class: ±1.0 / ±1.5 / ±2.0 / ±2.5 %FS.
• Battery: 2,000 / 4,000 / 6,000 mAh.
• Remote temperature probe option.
• Process cooler with remote temperature probe option.
• Hazardous-area housing version.

Standard delivery / accessories

• Sensor unit.
• External GSM / NB-IoT antenna.
• Product passport / datasheet.
• Operating manual and calibration method on request.

Engineering notes

• The datasheet uses EU / IEC terminology such as %FS and IEC 60529 ingress ratings.
• Ambient operating temperature and measured/process temperature are stated separately.
• Conservative ratings were selected where legacy source documents differed.
• Final product definition remains configuration-specific.

Remote setpoint configuration interface

Dispatcher-side configuration allows remote adjustment of the measurement interval, reporting schedule and min./max. alarm thresholds for each channel. During normal operation the sensor reports according to schedule; when configured pressure or temperature limits are exceeded, the device switches to event-driven reporting until the alarm condition clears.

What the translated screen shows

• Pressure P_out and temperature T_out.
• Alarm threshold bars for both channels.
• Measurement, heartbeat and alarm-state intervals.
• JSON view of the active configuration.

EU compliance and installation notes

Regulatory adaptation for the EU market

• A manufacturer RoHS declaration is published for V.A.D. products in accordance with Directive 2011/65/EU and Delegated Directive (EU) 2015/863.
• For a marketed cellular version, the applicable EU legislation typically includes RED 2014/53/EU, RoHS 2011/65/EU and WEEE 2012/19/EU.
• The hazardous-area version described in EU: CE 1354 II 2G Ex d IIC T6 Gb X
• Use in hazardous areas within the EU requires a version carrying valid ATEX / IECEx marking together with the corresponding declaration and certificate set.
• CE marking is product-specific and may only be applied after final conformity assessment of the placed-on-market EU variant.

No unverified CE or ATEX claim is made on this page.

Installation and service precautions

• Mount similarly to a pressure gauge and apply mechanical load only to the process connection, not to the housing.
• Avoid severe vibration, shocks and pressure pulsation above approximately 10% of nominal range.
• If process temperature exceeds the permitted device limit, use an impulse line or cooler.
• Protect the housing against condensation and freezing in low-temperature service.
• Do not open the unit in a hazardous area; battery service must be carried out by authorized personnel only.

Configurable telemetry workflow

1. Measure — Pressure and temperature are measured locally every 5–600 seconds.
2. Compare — Measured values are checked against configured minimum and maximum thresholds.
3. Sleep / heartbeat — If values are normal, the unit returns to low power and reports every 30 min to 24 h.
4. Alarm report — If thresholds are exceeded, event-driven transmission starts every 5–60 min until the condition clears.

Published field evidence

• An interregional-gas pilot protocol documents approximately 4,000 server sessions in 7 months on one test unit and approximately 10,000 sessions in 17 months on another test unit.
• The same pilot notes average monthly traffic of approximately 60 kB and regular reporting by schedule and on threshold events.
• A pilot letter reports 93-94% remaining battery charge after 267 communication sessions in a pilot installation and observed pressure-measurement accuracy not worse than ±20 Pa on a 0–40 kPa unit.

Tender / order-sheet checklist

• Pressure type: gauge or absolute.
• Required pressure range and accuracy class.
• Battery capacity and expected reporting profile.
• Communication technology and antenna arrangement.
• Need for remote temperature probe or cooler.
• Whether a hazardous-area certified variant is required for the final EU installation.