Troubleshooting

HMT120 User Guide

Document code: M211244EN
Revision: D
Language: English
Product: HMT120
Document type: User guide

About this document
Version information
Related manuals
Documentation conventions
Trademarks
Product overview
Introduction to HMT120 series
Accessories
Fixed and remote probe models
Optional display
Interchangeable probe
Constant output probe
Transmitter parts
Safety
ESD protection
Installation
Opening the transmitter cover
Wall mounting
Installation with rain shield
Installation with radiation shield
Duct installation kit
Probe assembly with duct installation kit
Drilling instructions for duct installation kit
Probe mounting clamp
Probe mounting flange
Connections
Wiring
Serial line operation
Using the service port
Serial interface settings
Installing driver for the USB service cable
Connecting with a computer
List of serial commands
Device information and status
Serial line output and communication
Calibration commands
Configuring serial line operation
Measurement parameter configuration commands
Analog output configuration commands
Other commands
Maintenance
Removing and fastening fixed probe
Removing and fastening remote probe
Testing analog outputs
Replacing the HUMICAP sensor
Calibration and adjustment
Calibration and adjustment overview
Push-button calibration
Adjusting humidity and temperature with push buttons
Adjusting RH and T with MI70 handheld indicator
Field checking and adjustment using a calibrated reference probe
1-point adjustment using a calibrator
2-point adjustment using a calibrator
LiCl-NaCl adjustment
Temperature field check and adjustment using a calibrated reference probe
Troubleshooting
Error codes
Solving typical problems
Analog output error notification
Technical data
Specifications
Spare parts and accessories
Transmitter dimensions
Calculation formulas
Calculation formulas overview
Dew point temperature
Dew/frost point temperature calculation
Mixing ratio calculation
Saturation vapor pressure calculation
Water vapor pressure calculation
Absolute humidity calculation
Enthalpy calculation
Accuracies of calculated variables
Accuracy of dew point temperature °C
Accuracy of mixing ratio g/kg (ambient pressure 1013 mbar)
Accuracy of wet bulb temperature °C
Accuracy of absolute humidity g/m3
Warranty
Technical support
Recycling

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