The Yokogawa 701953 is a 16-channel external scanner box engineered for multichannel data acquisition when paired with the Yokogawa 720221 module. It delivers simultaneous DC voltage and temperature measurements across 16 independent input channels, supporting 12 thermocouple types (K, E, J, T, L, U, N, R, S, B, W, Au-Fe-chromel) with reference junction compensation accuracy ranging from ±1°C to ±1.5°C depending on type. Input isolation between ground, terminal blocks, and subchannels ensures signal integrity in industrial environments. The 16-bit voltage measurement resolution (24000 LSB/range) and 0.1°C temperature resolution enable precise data capture, while the 600 Hz bandwidth (-3 dB point at 100 ms updating rate) suits low-frequency monitoring applications.
Technical Specifications
• Channels: 16 independent input channels
• Measurement Types: DC voltage, temperature (thermocouple)
• Supported Thermocouple Types: K, E, J, T, L, U, N, R, S, B, W, Au-Fe-chromel
• Maximum Input Voltage: 42 V (AC + DC peak, 1 kHz or less)
• Maximum Rated Voltage to Earth: 42 V (AC + DC peak, 1 kHz or less)
• Voltage Measurement Resolution: 16 bits (24000 LSB/range)
• Temperature Measurement Resolution: 0.1°C
• Reference Junction Compensation Accuracy: ±1°C (K, E, J, T, L, U, N); ±1.5°C (R, S, B, W); ±1 K (Au-Fe-chromel)
• Bandwidth Limit: 600 Hz (-3 dB point) at 100 ms data updating rate
– Key Features
• Input isolation between ground and terminal blocks; isolation between subchannels
• Screwed terminal block connections for voltage and thermocouple inputs
• Industrial-grade construction for demanding operational environments
• Available cable lengths: 1 m (701953-L1) and 3 m (701953-L3)
– Typical Applications
Multichannel thermal and voltage monitoring in process control, industrial testing, and environmental measurement systems requiring galvanic isolation and thermocouple support.
– Compatibility & Integration
Requires Yokogawa 720221 module for operation. Compatible with Yokogawa data acquisition systems and ScopeCorder series. Connection cable 705926 supports DA4, DA12, and 701953 scanner box integration.
