
Legacy configuration codes Valid from 25th February2003
HMP231 Humidity and Temperature Transmitter
For wall mounting
Industrial humidity and temperature transmitter
HMP231 A A
PRICE
Transmitter
RH+T A
type
RH+T+Td B
RH+T+a+Tw+x C
isplay on transmitter cover 2
Probe length
Power supply &
24 V, no connectors
0
connectors
24 V, shared connector for power supply and analog outputs
4
Using serial interface:
24 V, connector for RS232C 8
24 V, 2 connectors: RS232C and analog outputs+power supply
9
24 V, 2 connectors shared for power supply and RS485
9
Serial interface
intered stainless steel filter (16452) 1
PS plastic grid & stainless steel netting (16720HM) 2
PS plastic grid (16562) 3
Analog output
E
channel 1
channel 2
Parameters for the
H (0...100 %RH) 1 1
analog outputs
(range: see below) 2 2
(If available in the
d (-40...+60 °C) (-40...+140 °F) 3 3
chosen transmitter
(0...160 g/m3) (0...69.9 gr/ft3) 4 4
type)
w (0...+60 °C) (+32...+140 °F) 5 5
(0...160 g/kg d.a.) (0...1120 gr/lb) 6 6
(-40...+460 kJ/kg) (-17.2...+197.8 Btu/lb) 7 7
(Ch1 and Ch2) channel 1
channel 2
Analog output range
20...+60 °C (-4...+140 °F) A
for temperature
40...+60 °C (-40...+140 °F)
...+60 °C (+32...+140 °F)
etric 1
and serial interface)
on-metric 2A
Regaining option *)
o regaining (HUMICAP K) 3
and sensortype
egaining (HUMICAP KC) 2
Manual language
innish E
TOTAL
*) Humidity sensor regaining can be used to reduce the effects of some chemical contaminants.
QTY
If the regaining option is chosen, the sensor must be protected either with a sintered filter or
OTAL VALUE
with a PPS plastic grid with steel netting; the PPS plasticgrid can not be used.
For further information about this option, please see product data sheet or contact Your Vaisala representative.
Selections in bold are included in the prices of the basic versions.
Selections in italic are available at an extra price.
Example of order code with typical settings:

Legacy configuration codes Valid from 25th February 2003
HMP233 Humidity and Temperature Transmitter
With compact probe
Industrial humidity and temperature transmitter
HMP233 PRICE
Transmitter RH+T A
type
RH+T+Td B
RH+T+a+Tw+x C
isplay on transmitter cover 2
Probe cable length
m cable,+80 °C (176 °F) B
0 m cable, +80 °C (176 °F)
m cable,+120 °C (+248°F) E
0 m cable, +120 °C (+248°F)
Power supply,
24 V, no connectors
0
alarm output &
115 V, no connectors
1
connectors
230 V, no connectors
2
24 V, + alarm output unit (no connectors)
3
24 V, shared connector for power supply and analog outputs
4
24 V, as above + alarm output unit not on connector
5
115 V, connector for analog outputs
6
230 V, connector for analog outputs
7
Using serial interface:
24 V, connector for RS232C
8
24 V, 2 connectors: RS232C and analog outputs+power supply
9
24 V, 2 connectors shared for power supply and RS485
9
Serial interface
Sensor protectionPPS plasticgrid & stainless steel netting (16720HM) 2
Analog output
...20 mA B B
(Ch1 and Ch2)
hannel 2
Parametersfor the
d (-40...+100 °C) (-40...+212 °F)
(0...600 g/m3) (0...262 gr/ft3)
w (0...+100 °C) (+32...+212 °F)
(0...500 g/kg d.a.) (0...3500 gr/lbd.a.)
(-40...1500 kJ/kg) (-17.2...644.9 Btu/lb)
(Ch1 and Ch2) channel 1
channel 2
Analog output range
-4...+176 °F) A
for temperature
+32...+212 °F) F
Units (local display
and serial interface)non-metric
Installation kit forno A
duct mounting
es: for +80 °Ccable (+176 °F)
es: for +120 °Ccable (+248 °F) C
Regaining option *)
Manual languageNo manual A
innish E
TOTAL
*) Humidity sensor regaining can be used to reduce the effects of some chemical contaminants.
QTY
If the regaining option is chosen, the sensor must be protected either with a sintered filter or
TOTAL VALUE
with a PPS plastic grid with steel netting; the PPS plastic grid can not be used.
Please note thatif mains power (115/230V) is selected regaining cannot be used.
For further informationabout this option, please see product data sheet or contact Your Vaisalarepresentative.
Selections in bold are included in the prices of the basic versions.
Selections in italic are available at an extra price.
xample of order code with typical settings:
HMP233

Legacy configuration codes Valid from 25th February 2003
HMP234 Humidity and Temperature Transmitter
With pressure tight high temperature probe
Industrial humidity and temperature transmitter
HMP234 1 A PRICE
Transmitter RH+T A
type
RH+T+Td B
RH+T+a+Tw+x C
isplay on transmitter cover 2
Probe cable length
m cable,+180 °C (+356 °F) A
m cable,+180 °C (+356 °F) B
0 m cable, +180 °C (+356 °F) C
Power supply,
24 V, no connectors
0
alarm output &
115 V, no connectors
1
connectors
230 V, no connectors
2
24 V, + alarm output unit (no connectors)
3
24 V, shared connector for power supply and analog outputs
4
24 V, as above + alarm output unit not on connector
5
115 V, connector for analog outputs
6
230 V, connector for analog outputs
7
Using serial interface:
24 V, connector for RS232C
8
24 V, 2 connectors: RS232C and analog outputs+power supply
9
24 V, 2 connectors shared for power supply and RS485
9
Serial interface
urrent loop C
Sensor protection
intered stainless steel filter (16452) 1
Analog output
...20 mA B B
(Ch1 and Ch2)
hannel 2
Parametersfor the
H (0...100 %RH) 1 1
analog outputs
(range: see below) 2 2
(Ch1 and Ch2)
d (-40...+100 °C) (-40...+212 °F) 3 3
(0...600 g/m3) (0...+262 gr/ft3) 4 4
w (0...+100 °C) (+32...+212 °F) 5 5
(0...500 g/kg d.a.) (0...3500 gr/lbd.a.) 6 6
(-40...1500 kJ/kg) (-17.2...644.9 Btu/lb) 7 7
channel 1
channel 2
Analog output range
20...+80 °C (-4...+176 °F)
20...+120 °C (-4...+248 °F) B
20...+180 °C (-4...+356 °F) C
40...+80 °C (-40...+176 °F) D
40...+120 °C (-40...+248 °F) E
40...+180 °C (-40...+356 °F)
Units (local displaymetric 1
and serial interface)
on-metric 2A
Regaining option *)
Manual languageNo manual A
innish E
TOTAL
*) Humidity sensor regaining can be used to reduce the effects of some chemical contaminants.
QTY
Please note thatif mains power (115/230V) is selected regaining cannot be used.
For further informationabout this option, please see product data sheet or contact Your Vaisalarepresentative.
TOTAL VALUE
Selections in bold are included in the prices of the basic versions.
Selections in italic are available at an extra price.
Example of order code with typical settings:
HMP234A1A0A1

Legacy configuration codes Valid from 25th February 2003
HMP235 Humidity and Temperature Transmitter
With high temperature probe
Industrial humidity and temperature transmitter
HMP235 PRICE
Transmitter RH+T A
type
RH+T+Td B
RH+T+a+Tw+x C
RH+T+Td+a+Tw+x+h
RH+T+h F
Display no display
display on transmitter cover
Probe cable length 2 m cable, +180 °C (+356 °F) A
5 m cable, +180 °C (+356 °F)
10 m cable, +180 °C (+356 °F) C
Power supply,
24 V, no connectors
alarm output &
115 V, no connectors
1
connectors
230 V, no connectors
2
24 V, + alarm output unit (no connectors)
3
24 V, shared connector for power supply and analog outputs
4
24 V, as above + alarm output unit not on connector
5
115 V, connector for analog outputs
6
230 V, connector for analog outputs
7
Using serial interface:
24 V, connector for RS232C
8
24 V, 2 connectors: RS232C and analog outputs+power supply
9
24 V, 2 connectors shared for power supply and RS485
9
Serial interface RS 232C A
RS 485/RS 422 B
current loop C
Sensor protection sintered stainlesssteel filter (16452) 1
PPS plasticgrid & stainless steel netting (16720HM) 2
Analog output 4...20mA
signals 0...20 mA B B
(Ch1 and Ch2) 0...1 V C C
0...5 V D D
0...10 V
E
channel 1
channel 2
Parametersfor the RH (0...100 %RH) 1 1
analog outputs T (range: see below) 2 2
(If available in the
Td (-40...+100 °C) (-40...+212 °F) 3 3
chosen transmitter
a (0...600 g/m3) (0...+262 gr/ft3) 4 4
type) Tw (0...+100 °C) (+32...+212 °F) 5 5
x (0...500 g/kg d.a.) (0...3500 gr/lb d.a.) 6 6
h (-40...1500 kJ/kg) (-17.2...644.9 Btu/lb) 7 7
(Ch1 and Ch2) channel 1
channel 2
Analog output range -20...+180 °C (-4...+356 °F)
for temperature
0...+180 °C (+32...+356 °F) B
Units (local display metric 1
and serial interface) non-metric 2
Installation kit no installation kit
aluminium flange B
steel flange
Regaining option *) no regaining (HUMICAP K) 3
and sensortype
regaining (HUMICAP KC) 2
Manual language No manual A
English B
German C
French D
Finnish E
OTAL
*) Humidity sensor regaining can be used to reduce the effects of some chemical contaminants.
TY
If the regaining option is chosen, the sensor must be protected either with a sintered filter or
OTAL VALUE
with a PPS plastic grid with steel netting; the PPS plastic grid can not be used.
Please note thatif mains power (115/230V) is selected regaining cannot be used.
For further informationabout this option, please see product data sheet or contact Your Vaisalarepresentative.
Selections in bold are included in the prices of the basic versions.
Selections in italic are available at an extra price.
Example of order code with typical settings:
HMP235 A

Legacy configuration codes Valid from 25th February 2003
HMP237 Humidity and Temperature Transmitter
With compact probe for demanding environments
Industrial humidity and temperature transmitter
HMP237 PRICE
Transmitter RH+T A
type
RH+T+Td B
RH+T+a+Tw+x C
isplay on transmitter cover 2
Probe cable length
m cable,+180 °C (+356°F) A
m cable,+180 °C (+356 °F) B
0 m cable, +180 °C (+356 °F) C
Power supply,
24 V, no connectors
0
alarm output &
115 V, no connectors
1
connectors
230 V, no connectors
2
24 V, + alarm output unit (no connectors)
3
24 V, shared connector for power supply and analog outputs
4
24 V, as above + alarm output unit not on connector
5
115 V, connector for analog outputs
6
230 V, connector for analog outputs
7
Using serial interface:
24 V, connector for RS232C
8
24 V, 2 connectors: RS232C and analog outputs+power supply
9
24 V, 2 connectors shared for power supply and RS485
9
Serial interface
urrent loop C
Sensor protection
intered stainless steel filter (16452) 1
PS plasticgrid & stainless steel netting (16720HM) 2
Analog output
...20 mA B B
(Ch1 and Ch2)
hannel 2
Parametersfor the
H (0...100 %RH) 1 1
analog outputs
(range: see below) 2 2
(If available in the
d (-40...+100 °C) (-40...+212 °F) 3 3
chosen transmitter
(0...600 g/m3) (0...+262 gr/ft3) 4 4
type)
w (0...+100 °C) (+32...+212 °F) 5 5
(0...500 g/kg d.a.) (0...3500 gr/lbd.a.) 6 6
(-40...1500 kJ/kg) (-17.2...644.9 Btu/lb) 7 7
(Ch1 and Ch2) channel 1
channel 2
Analog output range
+32...+212 °F) G
Units (local display
etric 1
and serial interface)
on-metric 2
Installation kit
or duct mounting B
Regaining option *)
Manual languageNo manual A
innish E
TOTAL
*) Humidity sensor regaining can be used to reduce the effects of some chemical contaminants.
QTY
If the regaining option is chosen, the sensor must be protected either with a sintered filter or
TOTAL VALUE
with a PPS plastic grid with steel netting; the PPS plastic grid can not be used.
Please note thatif mains power (115/230V) is selected regaining cannot be used.
For further informationabout this option, please see product data sheet or contact Your Vaisalarepresentative.
Selections in bold are included in the prices of the basic versions.
Selections in italic are available at an extra price.
Example of order code with typical settings:
HMP237A1A0A1

Legacy configuration codes Valid from 25th of February 2003
HMP238 Humidity and Temperature Transmitter
With pressure tight high temperature probe for pipeline installations
Industrial humidity andtemperature transmitter
HMP238 1
PRICE
Transmitter
RH+T A
type
RH+T+Td B
RH+T+a+Tw+x C
isplay on transmitter cover 2
Probe cable length
m cable, +180 °C
(+356 °F)
A
m cable, +180 °C
(+356 °F)
0 m cable, +180 °C (+356 °F) C
Power supply,
24 V, no connectors
alarm output &
115 V, no connectors
1
connectors
230 V, no connectors
2
24 V, + alarm output unit (no connectors)
3
24 V, shared connector for power supply and analog outputs
4
24 V, as above + alarm output unit not on connector
5
115 V, connector for analog outputs
6
230 V, connector for analog outputs
7
Using serial interface:
24 V, connector for RS232C
8
24 V, 2 connectors: RS232C and analog outputs+power supply
9
24 V, 2 connectors shared for power supply and RS485
9
Serial interface
urrent loop C
Sensor protection
intered stainless steel filter (16452)
...20 mA B B
(Ch1 and Ch2)
channel 1
channel 2
Parameters for the
H (0...100 %RH) 1 1
analog outputs
(range: see below) 2 2
(If available in the
d (-40...+100 °C) (-40...+212 °F) 3 3
chosen transmitter
(0...600 g/m3) (0...+262 gr/ft3) 4 4
type)
w (0...+100 °C) (+32...+212 °F) 5 5
(0...500 g/kg d.a.) (0...3500 gr/lb d.a.) 6 6
(-40...1500 kJ/kg) (-17.2...644.9 Btu/lb) 7 7
(Ch1 and Ch2) channel 1
channel 2
Analog output range
20...+80 °C (-4...+176 °F)
20...+120 °C (-4...+248 °F) B
20...+180 °C (-4...+356 °F) C
40...+80 °C (-40...+176 °F) D
40...+120 °C (-40...+248 °F)
40...+180 °C (-40...+356 °F) F
Units (local display
etric 1
and serial interface)
on-metric 2
Installationkit
all valve set for pipelineinstallations
o regaining (HUMICAP K) 3
and sensortype
egaining (HUMICAP KC) 2
Manual language
innish
E
TOTAL
*) Humidity sensor regaining can be used to reduce the effects of some chemical contaminants.
TY
If the regaining option is chosen, the sensor must be protected either with a sintered filter or
TOTAL VALUE
with a PPS plastic grid with steel netting; the PPS plasticgrid can not be used.
Please note that if mains power (115/230V) is selected regaining cannot be used.
For further information about this option, please see product data sheet or contact Your Vaisala representative.
Selections in bold are included in the prices of the basic versions.
Selections in italic are available at an extra price.
Example of order code with typical settings:
HMP235 A