TempVue 20

Name: TempVue 20
Brand: Campbell Scientific
SKU: TempVue20
Availability: InStock

Pt100 Digital Air Temperature Sensor

TempVue 20

Orderable

Pt100 Digital Air Temperature Sensor

Pricing

Configuration

SDI-12 COMMS OutputTempVue20-SPart Number: 41340
MODBUS COMMS OutputTempVue20-MPart Number: 42493

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Model:: TempVue 20
Item Number:: TempVue20
Warranty:: Two years

Overview

The TempVue™20 provides even greater flexibility to customers wanting the next generation of air-temperature measurements. This sensor meets all relevant World Meteorological Organization (WMO) temperature recommendations, but with a digital output that ensures maximum flexibility to meet all application needs.

Designed with the customer in mind, the TempVue 20 easily interfaces with Campbell Scientific or third-party data loggers and fits a wide range of aspirated and passive temperature shields. The sensor comes with a short cable attached and terminates into an M12 connector, providing exceptional convenience, environmental protection, and data integrity for use in a variety of applications.

This featured product was part of the Aconcagua expedition to install a weather station on South America’s tallest peak. Learn more about the expedition on our Extreme Application Series: Aconcagua page.

Key Advantages

Meets World Meteorological Organization Recommendations
Digital ambient air-temperature sensor

Technical Description

The TempVue 20 consists of a wire-wrapped, four-wire Pt100 Resistance Temperature Detector (RTD) element encapsulated in an epoxy-filled, stainless-steel housing. The thin yet robust housing, combined with the Pt100 sensing element, result in a sensor that meets the WMO guideline for step response time (20 seconds) with an ambient wind speed of only 1 m/s (3.3 ft/s). The digital TempVue 20 also gives users much more measurement confidence than an analog sensor is able to provide, such as status information and the removal of any hassles regarding calibration inputs.

The TempVue 20 has a maximum measurement uncertainty of only 0.3 Kelvin over the entire measurement range of -60° to +60°C, with only 0.1 Kelvin over the most common temperature range of -40° to +40°C.

Benefits

Status information, measurement averaging options, and calibration information onboard
Meets all relevant temperature WMO recommendations
High measurement stability over both time and temperature
Incredibly easy to install or remove for calibration checks
Durable and protected for even the harshest environmental conditions
Calibration certificate included

Specifications

Sensor Description: Platinum Resistance Thermometer
(Pt100)
Measurement Uncertainty: ±0.1°C
(-40° to +40°C)
±0.3°C
(-60 to -40°C and 40 to 60°C)
Temperature Measurement Range: -60° to +60°C
(-76° to +140°F)
Time Constant in Air: 20 s
for a wind speed of 1 m/s (3.3 ft/s)
Resolution: Two decimal places
(0.01°C)
Connector Type: M12
(to extend beyond 1 m [3 ft] standard cable length)
Ingress Protection: IP67
Probe Diameter: 1.9 cm
(0.75 in.) maximum
Probe Length: 12.1 cm
(4.75 in.) tip to end of cable gland
Extended Probe Length: 18.1 cm
(7.125 in.) tip to end of extender piece
Total Length: 97.16 cm
(38.25 in.) tip to end of connector
Weight: 70 g
(0.15 lb) for probe with extender piece, including standard 1 m (3 ft) cable with M12 connector

Power

Voltage Range: 6 to 16 Vdc
Current: 150 µA

TempVue 20-SDI-12

SDI-12 Compatibility: Version 1.4

TempVue 20-Modbus

Communications Protocol: Modbus RTU protocol
(over RS-485)
Communications Format: Eight data bits, one stop bit, even parity as default
Baud Rate: 19,200 bps as default
(user-configurable)