Vaisala TMW92 Temperature 2-wire Transmitter for Wall Mounting

Calibration certificate
Easy Installation, Configuration, and Field Adjustment
Calculated Humidity Parameters
Transmitter with a display and a solid front sliding cover

The 2-wire TMW92 transmitter is designed for use in high performance HVAC applications such as museums, laboratories, data centers, and production facilities. The transmitter is quick and easy to install and use on the field even without any special tools. The most common settings, such as metric/non-metric unit selections, can be easily changed with dip switches when the enclosure is open.

On-site calibration and adjustment is exceptionally easy. The sliding cover lid exposes offset trimmer for 1-point calibration of temperature. The included display makes adjustment clear and convenient by instantly indicating the effects of any changes. A service port enables temperature calibration, using either a PC or the Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM70.

The transmitter also features a user exchangeable temperature module TM10, which can be ordered as a spare part. The module is delivered with a calibration certificate.

Transmitter Parts

Outside

• Locking screw for mounting base. Not included, M3×6 recommended.
• Adjustment trimmers
• Service port
• Window for display (only in models where the display is visible)
• Locking screw for slide. Not included, M3×6 recommended.
• Display
• Type label
• Grip for slide

Inside (Digital Output Models)

• Mounting base
• Opening for cable (wiring from top)
• Terminal label
• Screw terminals.
• Opening for cable (wiring from behind)
• Label for RS-485 baud rate DIP switch settings
• Orientation arrow – should point up after the mounting base has been installed
• Place for zip tie (for cable strain relief)
• Supports
• Transmitter body
• DIP switches for common configuration options; see section DIP Switches of Digital Output
• RS - 485 termination jumper (connects a 120 Ω resistor)
• DIP switches for transmitter address selection
• HTM10 module
• HUMICAP® sensor

Installing the Mounting Base

Use the mounting holes to attach the mounting base securely. Use at least two screws (not included).

The arrow on the mounting base must point straight up after installation. Proper orientation is important : air must flow through the vents on the bottom and top.