Data Sheet

HD2903T… and HD29V3T… ORDERING CODES
HD2903T…: Active transmitter for measuring air speed in ducts, 4…20mA output.
AISI 304 steel probe, diameter 12mm, compact unit HD2903TO… version with
probe joined to the electronics enclosure, HD2903TC… version with probe
connected to the electronics through a cable. Air speed range 0.05…1m/s -
0.1…2m/s - 0.20…10m/s - 0.20…20m/s selected by jumper. Power supply
18...40Vdc or 12…24Vac. Air probe operating temperature -10 …+ 80°C.
HD29V3T…: Active transmitter for measuring air speed in ducts, 0…10Vdc out-
put. AISI 304 steel probe, diameter 12mm, compact unit HD29V3TO… ver-
sion with probe joined to the electronics enclosure, HD29V3TC… version
with probe connected to the electronics through a cable. Air speed range
0.05…1m/s - 0.1…2m/s - 0.20…10m/s - 0.20…20m/s selected by jump-
er. Power supply 18...40Vdc or 12…24Vac. Air probe operating temperature
-10…+80°C.
HD2937T… and HD29V37T… ORDERING CODES
HD2937T…: Active transmitter for measuring air speed and temperature in
ducts, 4…20mA outputs. AISI 304 steel probe, diameter 12mm, compact
unit HD2937TO…version with probe joined to the electronics enclosure,
HD2937TC…version with probe connected to the electronics through a ca-
ble. Air speed range 0.05…1m/s - 0.1…2m/s - 0.20…10m/s - 0.20…20m/s
selected by jumper, fixed temperature range -10…+60°C. Power supply
18...40Vdc or 12…24Vac. Air probe operating temperature -10…+80°C.
HD29V37T…: Active transmitter for measuring air speed and temperature in
ducts, 0…10Vdc outputs. AISI 304 steel probe, diameter 12mm, compact
unit HD29V37TO…version with probe joined to the electronics enclosure,
HD29V37TC… version with probe connected to the electronics through a ca-
ble. Air speed range 0.05…1m/s - 0.1…2m/s - 0.20…10m/s - 0.20…20m/s
selected by jumper, fixed temperature range -10…+60°C. Power supply
18...40Vdc or 12…24Vac. Air probe operating temperature -10 … +80°C.
HD29371T… and HD29V371T… ORDERING CODES
HD29371T…: Active transmitter for measuring air speed, temperature and
relative humidity in ducts, 4…20mA outputs. AISI 304 steel probe, diam-
eter 14mm, compact unit HD29371TO version… with probe joined to the
electronics enclosure, HD29371TC… version with probe connected to the
electronics through a cable. Air speed range 0.05…1m/s - 0.1…2m/s
- 0.20…10m/s - 0.20…20m/s selected by jumper, fixed temperature
range -10…+60°C, relative humidity range 0…100%RH. Power supply
18...40Vdc or 12…24Vac. Air probe operating temperature -10…+80°C.
HD29V371T…: Active transmitter for measuring air speed, temperature and
relative humidity in ducts, 0…10Vdc outputs. AISI 304 steel probe, diam-
eter 14mm, compact unit HD29V371TO…version with probe joined to the
electronics enclosure, HD29V371TC… version with probe connected to the
electronics through a cable. Air speed range 0.05…1m/s - 0.1…2m/s -
0.20…10m/s - 0.20…20m/s selected by jumper, fixed temperature range
-10…+60°C, relative humidity range 0…100%RH. Power supply 18...40Vdc
or 12…24Vac. Air probe operating temperature -10 … +80°C.
Probe dimensions:
TO series
TC series
HD2903TC... - HD29V3TC...
L
HD2937TC... - HD29V37TC...
HD29371TC... - HD29V371TC...
Ø12mm
Ø12mm
Ø14mm
Ø12mm
HD2903TO... - HD29V3TO...
L
HD2937TO... - HD29V37TO...
HD29371TO... - HD29V371TO...
Ø12mm
Ø12mm
Ø14mm Ø12mm
HD29 3T
Cable length (… TC … models only)
2 = 2m
5 = 5m
10 = 10m
Probe length
T01 = 150mm
T02 = 250mm
T03 = 350mm
TC1 = 145mm
TC2 = 245mm
TC3 = 345mm
3 = Air speed
0 = 4…20mA analogue output
V = 0…10Vdc analogue output
HD29 371T
Cable length (… TC … models only)
2 = 2m
5 = 5m
10 = 10m
Probe length
T01 = 215mm
T02 = 415mm
T03 = 565mm
TC1 = 215mm
TC2 = 415mm
TC3 = 570mm
1 = %RH output
7 = Temperature output
3 = Air speed
No sign = 4…20mA analogue output
V = 0…10Vdc analogue output
HD29 37T
Cable length (… TC … models only)
2 = 2m
5 = 5m
10 = 10m
Probe length
T01 = 180mm
T02 = 275mm
T03 = 375mm
TC1 = 175mm
TC2 = 275mm
TC3 = 375mm
7 = Temperature output
3 = Air speed
No sign = 4…20mA analogue output
V = 0…10Vdc analogue output