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Overview
The GRANITE™ TEMP 120 is a purpose-built thermocouple measurement module. It has 20 thermocouple inputs using universal-alloy miniature thermocouple jacks. The TEMP 120 is made to handle extreme temperature environments and rapid thermal gradients applied to the measurement module. It has a dedicated temperature reference for every input terminal and is carefully designed to reduce temperature errors in the presence of external temperature gradients.
Benefits and Features
- Universal-type standard miniature thermocouple connectors
- Cold-junction reference temperatures on every channel
- Exceptional accuracy and temperature stability
- CPI DAQ connection for channel expansion
- CANbus 2.0 A/B output available
- USB 2.0 interface for PC-based operation
Detailed Description
The inputs of the TEMP 120 are a universal copper-copper junction and can accept any standard thermocouple alloy type. The TEMP 120 is part of a data-acquisition system that includes a DAQ such as a GRANITE 6, 9, or 10, or the CR6 or CR1000X Dataloggers. The clock timing synchronization across modules is managed by the DAQ or data logger via the CPI communication port. The time base can be referenced either to GPS or a temperature-compensated real-time clock. Applications requiring hundreds of terminals of thermocouples can be easily assembled as a single data-acquisition system. Measurement modules can be collocated or spread out via a networking cable to be closer to the point of measurement.
Specifications
| Operating Temperature Range |
|
| Terminals | 20 channels: universal (copper/copper), miniature socket connectors |
| Supported Thermocouple Types | B, E, J, K, N, R, S, T |
| Resolution | 0.015°C |
| Speed |
|
| Input Limits | 0.25 to 3.0 Vdc (built-in 1.65 Vdc bias voltage) |
| Maximum Input Voltage | ±10 Vdc |
| DC Common-Mode Rejection | ≥ 115 dB |
| Normal Mode Rejection | > 80 dB (at 50 and 60 Hz) |
| Internal Cold Junction Accuracy |
|
| Total Measurement Accuracy in Static Temperature Environment |
|
| Total Measurement Accuracy for Rapid Temperature Environment Ramps | ±3°C maximum (8°C per minute ambient gradient) |
| Dimensions | 21.5 x 10.8 x 5.1 cm (8.5 x 4.25 x 2 in.) |
| Weight | 0.9 kg (1.95 lb) |
Communications |
|
| CPI | RJ45 interface to Campbell Scientific data loggers and CDM measurement peripherals and sensors |
| USB | USB micro-B device only, 2.0 full-speed 12 Mbps, for computer connection |
System |
|
| Processor | Renesas RX63N (32-bit with hardware FPU, running at 96 MHz) |
| Memory | 2 MB SRAM |
| A/D Converter | 24-bit sigma-delta |
Power Requirements |
|
| Voltage | 9.6 to 32 Vdc |
| Typical Current Drain |
|
Compatibility
Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
Data Loggers
| Product | Compatible | Note |
|---|---|---|
| CR1000X | Requires OS version 4 or greater. | |
| CR6 | Requires OS version 10 or greater. |
Distributed Data Acquisition
| Product | Compatible | Note |
|---|---|---|
| GRANITE 10 | Requires OS version 1 or greater. | |
| GRANITE 6 | Requires OS version 1 or greater. | |
| GRANITE 9 | Requires OS version 1 or greater. |
Additional Compatibility Information
The TEMP 120 is compatible with CPI-enabled data loggers only.
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