Vaisala INTERCAP HMW82 User manual

Vaisala INTERCAP® Humidity and

Temperature Transmitter Series HMW80

M211328EN-B_______________________________________________________________________ 1

INSTALLATION

1. Find a suitable mounting location for the transmitter. The conditions at the location

should represent well the area of interest.

NOTE Do not install the transmitter on the ceiling. Avoid placing the transmitter near heat

sources, ventilation, and direct sunlight.

2. 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, so that air will flow through the vents

on the bottom and top.

3. Connect the wiring to the screw terminals on the mounting base. The supply voltage

and terminal assignments are model-specific; see section Wiring on the next page.

4. After completing the wiring, connect the cover over the mounting base.

Dimensions (in mm)

76.9

123.7

5.5

127.3

77.9

60.3

Ø4.4 Ø4.4

32.4

Quick Guide ___________________________________________________________________ HMW80

WIRING

HMW82

-T

4...20 mA

(-5 ... +55 ºC)

-RH

4...20 mA

(0 ... 100% RH)

+T +RH

Power supply

10 ... 28 VDC

= 0 ... 500 Ω

Power supply

10 ... 28 VDC

= 0 ... 500 Ω

You must connect the RH channel

of the HMW82, even if you only

want to measure temperature.

Connecting the T channel is optional.

TMW82

-T

4...20 mA

(-5 ... +55 ºC)

Power supply

10 ... 28 VDC

= 0 ... 500 Ω

Leave the two terminals on the left

unconnected.

HMW83

-T

0...10 V

(0...100 %RH)

-VS+T +VS

Power supply

15 ... 35 VDC

or 24 VAC ±20%

= 10 kΩmin.

-RH +RH

0...10 V

(-5...+55 ºC)

-T -VS+T +VS

Power supply

15 ... 35 VDC

or 24 VAC ±20%

=10kΩmin.

-RH +RH

0...10 V

Recommended wiring for long cables. 3-wire connection with -VS as common

ground. Not recommended if cable resistance is

more than 2.5 Ω.

TMW83

-T

0...10 V

(-5 ... +55 ºC)

-VS+T +VS

Power supply

15 ... 35 VDC

or 24 VAC ±20%

= 10 kΩmin.

-T -VS+T +VS

Power supply

15 ... 35 VDC

or 24 VAC ±20%

= 10 kΩmin.

0...10 V

Recommended wiring for long cables. 3-wire connection with -VS as common

ground. Not recommended if cable resistance is

more than 2.5 Ω.

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