1625A Portable Standard Thermometer

The 1625A Portable Reference Thermometer features four input channels, supporting temperature measurements for PRTs, thermistors, and thermocouples. It is powered by a lithium battery and equipped with a 5-inch touch LCD screen. The device has an internal memory for data storage and also supports data storage and retrieval using a USB flash drive. With convenient operation, comprehensive functions, and portable design, it meets the requirements for on-site precise tempertuare measurement, collection, and recording.

Features

• Simultaneous 4-channel acquisition, with adjustable sampling speeds of slow/medium/fast.

• Four-wire connection eliminates the impact of lead wire resistance in PRTs.

• Automatic current reversal function to eliminate errors due to thermoelectric emf in transmission

• PRT measurement supports two-wire, three-wire, and four-wire configurations, supports ITS90, CVD, and general PT temperature calculations

• Thermistor measurement supports two-wire and four-wire configurations, support for R(T), T(R), and other temperature calculations.

• Thermocouple measurement supports external reference junction and fixed reference junction, support for type B, E, J, K, N, R, S, T, and Au-Pt temperature calculations.

   

• Users can set digital recursive averaging filtering to improve stability.

• Provides internal storage for long-term testing, and also supports USB data export.

• 5-inch touch screen and color display, for setting, channel control, realtime temperature and resistance value displaying.

• Communication interfaces includes USB-B and LAN, supporting remote control.

Specifications

General

PRT Temperature Measurement Accuracy

*The temperature measurement accuracy of the PRT is based on the four-wire measurement method and does not include the error of the PRT itself.

Resistor Temperature Measurement Accuracy

*Thermistor temperature measurement accuracy is based on a four-wire measurement method and does not include thermistor's own error.

Thermocouple Temperature Measurement Accuracy

*Thermocouple temperature measurement accuracy does not include the cold end temperature error, and does not include the error of the thermocouple material itself.

*Thermocouple types support R, S, B, J, T, E, K, N, Au-Pt, please refer to the user manual for complete accuracy indicators.

Voltage Measurement Accuracy

Resistance Measurement Accuracy

* Resistance measurement accuracy is based on four-wire measurement. Platinum resistance three-wire measurement has an additional error of 0.05Ω.