The DicksonOne TWP provides local touchscreen viewing and cloud-connected monitoring of temperature, relative humidity or differential pressure. Its replaceable sensor system simplifies calibration and supports different monitoring applications using the same logger platform.
The DicksonOne TWP touchscreen data logger provides convenient local and remote monitoring for temperature, relative humidity and differential pressure. The large touchscreen allows users to view current measurements, historical trends, alarm conditions and device status directly at the monitoring point.
When connected to the DicksonOne cloud platform, recorded information can be accessed from authorised internet-connected devices. This makes the TWP suitable for facilities that need centralised environmental monitoring, alarm notification and accessible historical records.
Important: remote monitoring, cloud data access and phone, text or email notifications require an active DicksonOne subscription and a suitable network connection.
| Specification | Performance |
|---|---|
| Display | 8-inch LCD touchscreen |
| Measured parameters | Temperature, relative humidity or differential pressure according to the connected replaceable sensor |
| Communication | WiFi and Ethernet for DicksonOne cloud connection |
| Data export | WiFi or Ethernet through DicksonOne; USB export using a FAT32-formatted storage device |
| Backup storage | Approximately 1,000,000 sample points |
| Sample interval | User-selectable intervals of 60 or 90 seconds and 2, 5, 10, 15, 30 or 60 minutes; optional shorter intervals may be available |
| Display update | Dependent on the selected sample interval |
| Alarm indication | Local audible and visual alarms; remote phone, text and email alarms through DicksonOne |
| Operating temperature | 0 to 60 °C |
| Operating humidity | 0 to 95% RH, non-condensing, for the logger |
| Backup battery | Rechargeable battery providing up to approximately 70 hours of backup operation |
| Power supply | 100–240 VAC, 50/60 Hz power adapter |
| Power over Ethernet | 36 to 57 V input; approximately 235 mA peak at 48 V |
| Power consumption | Up to approximately 9 W |
| Dimensions | Approximately 21.0 × 4.5 × 18.0 cm |
| Weight | Approximately 0.66 kg |
| Enclosure | Polycarbonate front with ABS rear case and sensor pods |
| Ingress protection | IP21 |
| Mounting | Included mounting bracket and kickstand |
| Included accessories | AC adapter, mounting bracket and kickstand |
The TWP uses interchangeable sensor modules so the logger can be configured for different parameters and measuring ranges. A calibrated replacement sensor can be installed without replacing the complete touchscreen logger.
| Sensor | Parameter | Measurement range | Typical accuracy |
|---|---|---|---|
| RTRH / RTRH-R | Ambient temperature and relative humidity | Temperature: −40 to +85 °C Humidity: 5 to 95% RH, non-condensing |
Temperature: ±0.4 °C from −6.7 to +50 °C Humidity: ±2% RH |
| RTMP / RTMP-R | Ambient temperature | −30 to +50 °C | ±0.7 °C from −7 to +50 °C |
| RTHM | Single thermistor sensor in buffer | −50 to +70 °C | ±0.5 °C from −50 to +20 °C; accuracy varies over the remaining range |
| RTHM2 | Dual thermistor sensor in buffer | −50 to +70 °C | ±0.5 °C from −50 to +20 °C; accuracy varies over the remaining range |
| RKTC | Single Type K thermocouple | −185 to +1,093 °C | ±1.0 °C from −185 to +50 °C; accuracy varies over the remaining range |
| RKTC2 | Dual Type K thermocouple | −185 to +1,093 °C | ±1.0 °C from −185 to +50 °C; accuracy varies over the remaining range |
| RRTD | Platinum RTD temperature sensor | −100 to +176 °C | ±0.3 °C |
| RS080 | Differential pressure | −2 to +2 inH₂O | ±3% of measurement range |
| RS081 | Differential pressure | −0.5 to +0.5 inH₂O | ±3% of measurement range |
Confirm the required parameter, measurement range, number of channels, probe construction, cable length and calibration before ordering. The sensor’s own measurement limits determine the usable system range.
The touchscreen gives operators immediate access to measurements at the monitored location. Users can review current readings, trend graphs, summary information and alarm status without connecting a separate computer.
Onboard backup storage helps retain measurements if the network connection is interrupted. When communication is restored, the logger can continue transferring recorded information to DicksonOne.
DicksonOne centralises measurements from connected loggers into a secure cloud-based monitoring platform. Authorised users can review data from multiple departments, rooms or facilities without visiting each logger individually.
For regulated applications, confirm the required DicksonOne subscription, user controls, reporting configuration, validation approach and record-retention procedure before implementation.
The TWP can communicate through WiFi or wired Ethernet. Ethernet is generally preferred where a stable wired network is available, while WiFi can simplify installation where network cabling is impractical.
Power over Ethernet can carry network communication and operating power through compatible Ethernet infrastructure. Before installation, confirm PoE availability, network addressing, firewall requirements, wireless coverage and the organisation’s information-technology policies.
Seacom Process Instruments supplies and supports the DicksonOne TWP touchscreen data logger and compatible replaceable sensors. Our team can assist with sensor selection, communication requirements, monitoring-point planning, calibration and system configuration.
Contact Seacom with the required parameters, measurement ranges, number of monitoring points, alarm requirements, network availability, calibration needs and reporting expectations so we can recommend a suitable configuration.
The Vaisala HMT140 Wi-Fi Data Logger has been discontinued and is no longer recommended for new monitoring systems.
The Vaisala HMT330 Series was a flagship industrial transmitter platform for humidity, temperature and calculated moisture parameters. It is discontinued and replaced by an Indigo500 transmitter with the HMP probe selected for the application.
The Vaisala HMT120 and HMT130 provide accurate, stable humidity and temperature measurement for cleanrooms, laboratories, data centres and demanding HVAC applications.
Product transition: HMT120/HMT130 are expected to be phased out. For new projects, the Vaisala Origo10 is the recommended replacement platform.
The Vaisala Indigo500 Series provides flagship industrial measurement integration: choose Indigo510 for a simplified single-probe system or Indigo520 for full dual-probe capability.
The Sato Thermohygrograph Sigma II NSII-Q continuously records temperature and relative humidity on an easy-to-read paper chart, providing a visible record without requiring a computer or network.
The Vaisala HM70 was a handheld meter for humidity and temperature spot checks, field measurements, data logging and verification of installed Vaisala instruments. It is discontinued and replaced by the Vaisala Indigo80 handheld indicator with an HMP80 probe.
The Sato Mini-Cube 7008-10 records temperature and relative humidity on a seven-day paper chart for routine inspection and filing.
The Vaisala DL2000 combines precision temperature and relative-humidity monitoring with optional analog or door-contact inputs for viewLinc systems.
The Vaisala HMP155 provides stable humidity and temperature measurement for automatic weather stations, road-weather systems, airports, research sites and demanding outdoor monitoring.
The Vaisala HMX110 Series provides accurate humidity and temperature measurement for demanding indoor, duct and outdoor HVAC applications.
The Vaisala HMM100 provides reliable humidity measurement and a configurable analog output for integration into environmental chambers and OEM equipment.
The Vaisala GMW90 Series provides stable wall-mounted carbon-dioxide and temperature measurement, with optional humidity, for demanding HVAC and building-automation applications.
The Sato HIGHEST II combines a dial hygrometer and digital thermometer for convenient local checks of room temperature and humidity.
The Vaisala XMP10 Series comprises compact humidity and temperature probes offering accuracy levels up to ±1% RH and ±0.1 °C for demanding HVAC, data-centre and critical-environment applications.
The probes feature analog or Modbus RTU outputs, a standard M8 connector, an IP65-rated body and compatibility with Vaisala Origo10 modular HVAC transmitters.
The Isuzu TH27R paper temperature and humidity recorder has been discontinued and is no longer recommended for new installations. Seacom continues to support existing instruments with selected chart papers and recording pens.
The Vaisala HMT360 Series was an intrinsically safe transmitter platform for humidity, temperature and moisture measurement in hazardous areas. It is discontinued and replaced by the Vaisala HMT370EX with an application-specific probe.
