12 Channel Temperature Module

The Model 1701 12-ch 10k temperature module is designed as a data acquisition tool for 10k NTC thermistors that can be characterized by the Steinhart-Hart equation. It enables the collection and transmission of process temperatures of up to 12 probes, simultaneously. The 1701 has 4 internally calibrated resistors that allow for a field self-check feature that can be remotely launched. This ensures instrumentation accuracy and validation while in service.

1701 image

Key Features

Proven Accuracy

  • Range: 41°F to 203°F, ±0.1°F accuracy
  • Self-calibration & diagnostics

Easy Interfacing

  • 12-Channel 10K Thermistor
  • Multi-Drop RS485 bus
  • Optional RS-485 to USB adaptor

Typical Specifications


Microcontroller: ATMega328p 16MHz 8-bit
Analog to Digital: ADS1115 16-bit ADC w/Internal Reference
RS-485 Transceiver: MAX3078

Operating Environment

(-4 to 158)°F & (5 to 95)% Relative Humidity, non-condensing


Requirement: 9-34 VDC or 5VDC
Power Consumption : 2mA @ 24V, 4mA @ 12V, 8mA @ 5V
Protection: Reverse Polarity, ESD/Voltage Spike & Fuse protections


Sample Rate: 20 samples /sec per channel
Resolution: 16 bits
Range: 41°F to 203°F (Accuracy up to ±0.1°F)
User configurable Steinhart-Hart coefficients


RS-485 (ASCII)
USB 2.0 (Optional)
12x 10k NTC Thermistor Probe


GTW Model 1706 10k thermistor probes

Other Sensors and Data Acquisition


Core Module

The Model 1702 is designed to be a highly adaptable data acquisition tool enabling collection, storage and transmission of time stamped data from varying sources and protocols.
1702 - Core Module



The Model 1703 Gateway Module is designed to interface other 1700 series devices to the cloud or as a self-hosted IoT server under plant LAN/local network.
1703 - Gateway


Temperature Plate

The Model 1704 is an integrated temperature measurement plate. It can easily be installed in existing flanges and utilizes one or multiple temperature probes to accurately measure process temperature.
1704 - Temperature Plate


Balanced Flowmeter Plate

The Model 1705 is a multi-hole orifice plate flow meter with integrated temperature measurement. It offers high accuracy flow measurement with negligible permanent pressure loss.
1705 - Balanced Flowmeter Plate


10KΩ-Thermistor Temperature Sensor

The Model 1706 10KΩ-Thermistor Temperature Sensor probes utilize highly accurate, oven-baked glass bead thermistors which have excellent documented long-term stability.
1706 - 10KΩ-Thermistor Temperature Sensor


Digital Temperature Transmitter

The Model 1707 digital temperature tramsmitters are compact highly accurate low energy consumption IC temperature sensors with an RS-485 communication port. The Model 1707s can be used as stand-alone digital temperature sensors for various applications or as components in monitoring system.
1707 - Digital Temperature Transmitter


Digital Humidity & Temperature Transmitter

The Model 1708 digital humidity & temperature transmitters are compact & low energy consumption IC temperature sensors with digital output. The Model 1708s can also be used as stand-alone digital humidity & temperature sensors for various applications.
1708 - Digital Humidity & Temperature Transmitter