BL625 Precision Reference Thermometer ( ±20ppm)

The BL625 is a high-precision, cost-effective single channel thermometer, designed to work with 25 Ω and 100 Ω platinum resistance thermometers (RTDs) or standard platinum resistance thermometers (SPRTs). The sensor parameters can be configured, supporting the ITS-90 temperature scale, CVD equation, and IEC60751 standard. It offers an accuracy of up to ±0.005°C and a full-scale resolution of 0.0001°C. Its unique design makes it suitable for a variety of applications, from lab calibration to industrial process measurements.

FEATURES

• Supports measuring 25Ω and 100Ω platinum resistors(RTD, PRT, IPRT)

• Supports measuring 25Ω and 100Ω SPRT

• Supports ITS-90 characteristic coefficients

• Supports CVD (Callendar Van Dusen) and IEC-60751 characteristic coefficients

• Uses four-wire Kelvin connection to eliminate leadresistance effects

• Uses constant current excitation: 1mA

• Uses current reversal technology to eliminate thermoelectric EMF

• High accuracy: ±0.005°C at 0°C

• Resolution: 0.0001°C

• Extremely low temperature coefficient: 0.3ppm/°C

• Fast measurement: 1-second measurement cycle

• Has filtering function, with configurable filter period

• Units can be switched: Ω, °C, ℉, K

• User-calibratable

• Sensor parameter password protection

• Built-in parameter simulation & calculation function

• Serial RS-232 interface for remote reading of measurement data and controlling the thermometer

• Easy sensor connection: supports both terminal posts and DIN plugs for different scenarios

• Compact, lightweight, portable, and sturdy

APPLICATION

• Secondary laboratory calibration

• Laboratory, education, research testing

• Industries: chemical, pharmaceuticals and cosmetics; food and beverage; petroleum industry; renewable energy applications

SPECIFICATION

• Supported Probes: 25Ω or 100Ω SPRT/RTD

• Temperature Range: -196℃ ~ 920℃

• Temperature Resolution: 0.0001℃

• Temperature Accuracy: ±0.005℃ (@0℃) *

• Resistance Range: 5Ω ~ 400Ω

• Resistance Resolution: 0.0001 Ω (5~ 20Ω), 0.001Ω (20~ 400Ω)

• Resistance Accuracy: 0.0005 Ω (5~ 20Ω), 20 ppm (20~ 400Ω)

• Interpolation Algorithms: ITS-90: Temperature regions 4,6,7,8,9,10 and 11; CVD: R0, A, C and C; IEC60751

• Excitation Current: 1mA

• Sampling Frequency: 1Hz

• Filter Cycle: 0~60s adjustable

• Communication Interface: RS-232 Serial Interface (Female)

• Communication Protocol: SCPI compatible

• Connectors: 4mm banana plug / terminal / LEMO 1B 4-pin

• Operating Temperature Range: 20℃ ±5℃

• Operating Humidity Range: <85% RH (non-condensing)

• Power Supply: AC 100-240V (±5%), 50/60Hz **

• Dimensions: 155mm (W) x 195mm (L) x 65mm (H)

• Weight: 1kg

• Package Dimensions: 25cm (W) x 30cm (L) x 15cm (H)

• Package Total Weight: 1.6kg  ***

Note:

* Temperature measurement accuracy and range are limited by the sensor'sprecision and temperature span

** Customizable voltage versions like 110V/115V/230V are available

*** Total weight includes the instrument, accessories, and packaging

SCOPE OF DELIVERY

• Precision reference thermometer

• Protection case

OPTIONAL ACCESSORIES AND SERVICCE

• ISO17025 calibration service (PN: CAL-625)

• Reference PRT

ORDERING MODEL #

• BL625