GHM DeltaOHM HD2301.0 Manual de usuario

Operating manual

Thermohygrometer

HD2

301.0

www.deltaohm.com

English

Ke ep for future refer ence.

HD2301 - 2 - V1.7

CON TEN TS

GENERAL CHARACTERI STI CS ......................................................................... 3

DESCRI PTI ON OF TH E FUN CTI ON S ................................................................. 6

TH E PROGRAM MI N G M EN U ............................................................................. 9

PROBES AN D MEASUREMEN TS...................................................................... 1 0

MEASUREMENT OF RELATI VE HUMI DI TY................................................................. 10

PERFORMI NG THE MEASUREMENT ........................................................................ 10

CALI BRATI ON OF THE COMBI NED HUMI DI TY/TEMPERATURE PROBE ................................. 11

DI RECT I NPUT I NTO Pt 100 AND Pt 1000 TEMPERATURE PROBES ..................................... 13

TEMPERATURE MEASUREMENT............................................................................ 13

CONNECTI NG THE TP47 CONNECTOR FOR THE 4- WI RE Pt100 AND 2OR 4 - WI RE Pt1000

PROBES ......................................................................................................13

DI RECT CONNECTI ON OF 4WI RE Pt100 SENSORS ................................................... 15

W ARN I N GS .................................................................................................. 1 6

I N STRU M EN T SI GNALS AN D FAULTS ............................................................ 1 7

LOW BATTERY W ARN I N G AN D BATTERY REPLACEM EN T ............................... 1 8

WARNI NG ABOUT BATTERY USE ............................................................................. 18

I N STRU M EN T STORAGE ................................................................................ 1 9

NOTES ABOUT W ORKI N G AN D OPERATI V E SAFETY................................................. 2 0

TECH N I CAL CH ARACTERI STI CS .................................................................... 2 1

TECHNI CAL I NFORMATI ON ON THE THERMOHYGROMETER............................................... 21

TECHNI CAL DATA OF PROBES AND MODULES I N LI NE WI TH THE I NSTRUMENT........................ 22

TEMPERATURE PROBES Pt 100 SENSOR USI NG SI CRAM MODULE.................................. 22

Pt100/ Pt1000 PROBES WI TH TP47 CONNECTOR WI THOUT SI CRAM MODULE .................22

RELATI VE HUMI DI TY AND TEMPERATURE PROBES USI NG SI CRAM MODULE.........................23

ORD ERI N G COD ES ........................................................................................ 2 4

HD2301 - 3 - V1.7

GEN ERAL CH ARACTERI STI CS

The Therm ohygrom eter Model H D 2 3 0 1 .0 is a port able inst rum ent that m easures an

environm ent's t em perat ure and relat ive hum idit y.

I t is fit t ed wit h a large LCD display for ex cellent visualizat ion of t he m easured dat a.

The Therm ohygrom eter Model H D2 3 0 1 .0 m easures:

•relat ive hum idit y and t em perat ur e using com bined pr obes, fit t ed w it h a Pt 100

tem perat ure sensor or t herm ocouple;

•t em perat ure only by im m ersion, penet rat ion, or contact probes. The sensor

can be a Pt100 or Pt 1000.

When t he com bined hum idit y/ t em perat ure probe is connect ed, t he inst rum ent

calculates and displays t he follow ing data:

•absolut e hum idit y,

•dew point ,

•part ial vapour pressure.

The probes are fitt ed with t he autom at ic det ect ion SI CRAM m odule, wit h t he fact ory

calibrat ion set t ings already being m em orized inside.

The unit s of m easurem ent are t he following:

1. % RH % of relat ive hum idit y

2. g/ m 3Gram s of vapour in a cubic m eter of dry air

3. hPa Part ial vapour pressure ( hPa)

4. Td Dew point ( ° C or ° F)

5. ° C/ ° F Tem perature in Celsius ( ° C) or Fahreneit ( ° F) degrees.

Using t he Max, Min and Avg funct ion of t his inst rum ent respect ively obt ains t he

m axim um , m inim um or average values.

Ot her available funct ions are:

•t he r elat ive m easurem ent REL;

•the HOLD function;

•the autom atic t urning off which can also be disabled.

For furt her details see chapt er ‘Descript ion of the funct ions’ at page 6.

HD2301 - 4 - V1.7

Therm ohygrom eter

H D 2 3 0 1.0

HD2301 - 5 - V1.7

HD 2 3 0 1 .0

1. I nput for probes, 8-pole DI N45326 connector.

2. Bat tery sym bol: displays t he bat tery charge level.

3. Function indicators.

4. Secondary t em perat ure display line.

5. D ATA/ EN TER key: during norm al operat ion displays t he m ax im um ( MAX) , t he

m inim um ( MI N) and t he average ( AVG) of current m easurem ents; in t he m enu,

confirm s t he current select ion.

6. CLR/ ESC key: during norm al operat ion r esets t he m axim um , t he m inim um and

t he average of current m easurem ent s; in t he m enu, it reset s t he value set with t he

arrows.

7. H OLD/ key : freezes t he m easur em ent display during nor m al oper at ion; in t he

m enu, increases t he current value.

8. U N I T/ MEN U key : it allows select ion of t he unit of m easur em ent ; w hen pressed

together wit h the DATA key, it allows t o open t he m enu.

9. REL/ key : during nor m al operat ion enables t he r elat ive m easurem ent ( displays

the difference between the current value and the logged value when t he key is

pressed) ; in t he m enu, decreases t he current value.

10.ON -OFF/ AUTO-OFF key: t urns the instrum ent on and off; when pressed t ogether

wit h t he HOLD key, disables t he AutoPowerOff funct ion.

11.MAX ( m axim um v alue) , MI N ( m inim um v alue) and AV G ( aver age value) sym bols.

12.Main display line of r elat iv e hum idit y and ot her der ived m easurem ent s.

13.Line for sym bols and com m ent s.

HD2301 - 6 - V1.7

DESCRI PTI ON OF TH E FUN CTI ON S

The keyboard of the therm ohygrom eter HD 2 3 0 1 .0 is com posed of double-funct ion

keys. The function on t he key is the "m ain function", while t he one above the key is

the "secondary function".

When t he inst rum ent is in st andard m easurem ent m ode, t he m ain funct ion is act ive.

I n t he m enu, the secondary funct ion is enabled; press the D ATA+ UN I T keys toget her

t o open t he m enu.

The pressing of a k ey is accom panied by a short confirm at ion " beep" : a longer " beep"

sounds if the wrong key is pressed. Each key specific funct ion is described in det ail

below.

This key has two functions:

•ON / OFF: press t his key to turn t he inst rum ent on and off.

The t urning on enables all display segm ents for a few seconds, st ar ts an Au t o-t est

including the det ect ion of t he probe connect ed t o the input, and sets the inst rum ent

ready for norm al m easurem ent .

MIN

min s

>>>

•AUTO/ OFF: the Au t oPow e r Off funct ion can be disabled by sim ult aneously

pressing this key and the "HOLD" key when t urning t he inst rum ent on.

During t urning on, should no probes be connect ed, the "N O_ PRBE_ SER_ N UM"

m essage is displayed in t he line for sym bols for a few seconds, and in t he m ain line a

series of dashes appears while t he "ERR" m essage replaces t he tem perat ure.

When t he probe is inserted int o a funct ioning inst rum ent , t he " NEW _ PROB_ DET"

( New pr obe det ect ed) m essage appears: as t he dat a are captur ed upon t ur ning t he

inst rum ent on, it is necessary to turn it off and on again.

Caution! Replace the probes when the inst rum ent is off.

ON - OFF a nd AUTO- OFF

HD2301 - 7 - V1.7

The inst rum ent has an AutoPowerOff funct ion t hat aut om at ically turns t he inst rum ent

off aft er about 8 m inutes if no key is pressed during the intervening t im e.

Press sim ult aneously the ON / OFF key and the HOLD key t o disable t h is f unct ion.

I n this case, rem em ber t o t urn t he inst rum ent off using t he ON / OFF key: disabling of

t he aut om at ic turning off is shown by the blinking bat tery sym bol.

The CLR key has t wo funct ions:

•CLEAR ( CLR) : allows t o reset t he m axim um ( MAX) , m inim um ( MI N) and average

( AVG) value of t he capt ur ed m easurem ent s;

•ESC: once t he MENU has been opened with t he D ATA+ UN I T keys, the CLR key

will allow to cancel the param eters set using the and arrows.

The DATA key is used for the following funct ions:

•DATA: during norm al m easurem ent, by pressing t his key once t he m axim um

( MAX) value of t he m easurem ent s capt ur ed by t he probe connect ed t o t he

inst rum ent is displayed, updat ing it w it h t he acquisit ion of new sam ples;

- by pressing t his key again the m inim um ( MI N) value is displayed;

- by pressing t his key a t hird t im e t he average ( AVG) v alue is display ed.

The acquisit ion frequency is once a second.

The MAX, MI N and AVG values rem ain in t he m em ory until t he inst rum ent is on,

ev en aft er exit ing t he DATA display funct ion. When t he inst rum ent is off, t he

previously m em orized data are cleared. Upon turning on, t he inst rum ent

autom atically st art s m em orizing the MAX, MI N and AVG values.

To reset the previous values and st art wit h a new measurem ent session, press

CLR unt il t he FUNC_ CLRD m essage appears.

•EN TER: once t he MENU has been opened with the D ATA+ UN I T keys, t he DATA

key will perform the ENTER funct ion and t he MENU can be browsed and the

displayed param et er confirm ed.

The H OLD key is used for t he following funct ions:

•HOLD: by pressing t his key t he current m easurem ent updat e is st opped and t he

"HOLD" m essage will appear in the upper left -hand corner of the display. To return

t o t he current m easurem ent , press t he key again.

D ATA/ EN TER k ey

HOLD/ 

D isa blin g of t he a ut om a t ic t u rnin g off

CLR/ ESC k e y

HD2301 - 8 - V1.7

•: once t he MENU has been opened wit h the D ATA+ U N I T keys, t he key will

allow t o increase t he value of the select ed param et er.

Pressed toget her with t he ON / OFF key, during turn on, t he Aut oPowerOff funct ion is

disabled (see t he descript ion of t he ON/ OFF key).

The UN I T key is used for the following functions:

•UN I T: by pr essing t his key t he unit of m easurem ent of t he m ain input quant it y is

select ed: t he unit of m easurem ent will appear in t he upper par t of t he display; t he

m easured value will be displayed in t he cent ral line. By repeat edly pressing t he

UN I Tkey, t he desired unit of m easurem ent can be select ed bet ween t he

follow ing:

1. % RH % of relat ive hum idit y

2. g/ m 3Gram s of vapour in a cubic m eter of dry air

3. hPA Part ial vapour pr essur e ( hPa)

4. Td Dew point ( ° C or ° F)

By now pressing UNI T, t he % RH unit of m easurem ent is displayed again in t he

com m ent line and, sim ult aneously, t he unit of t em perat ure m easurem ent blinks.

Use the and arrows, if you w ish t o change t he t em perature display from

degrees Celsius ( ° C) to degrees Fahreneit ( ° F), or vice-versa. Confirm by pressing

the UNI T key or wait for the unit of m easurem ent t o st op blinking ( about 15

seconds t im eout ) .

•M EN U : in the m enu t wo it em s can be set :

1. Probe t ype

2. Probe ca librat ion

- t he m enu is opened by pressing sim ult aneously D ATA+ U N I T: t he first it em of t he

inst rum ent program m ing m enu will appear;

- use t he and arrows ( r espect ively locat ed above t he HOLD and REL keys) t o

m odify t he display ed value;

- press D ATA/ ENTER to confir m t he m odification and go onto the next it em ;

- press CLR/ ESC to cancel t he m odificat ion;

- to e x it t he m enu, press t he U N I T/ M EN U key again.

The " REL" key is used for the following funct ions:

•REL: it displays t he difference bet ween t he current value and t hat m easured on

pressing the key. The "REL" m essage is displayed on t he left . To ret urn t o t he

norm al m easurem ent , press t he key again.

•: once the MENU has been opened wit h t he D ATA+ UN I T keys, t he key will

allow t o decrease t he value of t he select ed param eter .

REL/ key

UN I T/ M EN U

HD2301 - 9 - V1.7

THE PROGRAM M I N G M EN U

To access t o t he m enu press sim ult aneously the following keys:

The it em s t o be set are list ed in t his order:

1 . Pr obe t ype :the "PRBE_ TYPE" m essage is displayed in t he com m ent line. The

m ain line in t he cent er of t he display shows t he t ype of probe connect ed t o t he

inst rum ent. The following probes can be connect ed t o t he input :

•hum idit y/ t em perat ure com bined probes wit h " Pt100" sensor com plet e w it h

SI CRAM m odule

•t em perat ure probes " Pt100" com plet e wit h SI CRAM m odule

•direct 4 w ir e "Pt 100" probes com plet e wit h TP47 m odule

•2 or 4 wire " Pt 1000" probes com plet e wit h TP47 m odule

N OTE: The probes fit ted w it h SI CRAM m odule are autom at ically det ect ed by t he

inst rum ent upon t urning on. The type of probe is configured by t he inst rum ent and

cannot be m odified by t he user.

I f the direct 4 wire "Pt100" probes and the " Pt 1000" pr obes that are not

m anufact ured by Delta OHM are connect ed t o the inst rum ent , t he

N O_ PRBE_ SER_ NUM m essage is displayed. I n t his case t he probe t ype m ust be

ent ered m anually by t he user:

•use t he and ar row s ( respect ively locat ed above t he HOLD and REL keys)

to m odify t he type of probe;

•press D ATA/ EN TER t o confir m t he m odificat ion and go ont o t he next it em ;

•press CLR/ ESC to cance l t he m odificat ion;

•to e x it t he m enu, press t he UN I T/ M EN U key again.

2 . Use r calibr a t ion procedure of th e com bine d h um id it y / t e m p er at ure

probe: t he probes are calibrated in our laboratory at 23 ° C at t he relat iv e

hum idit y point s of 75% RH, 33% RH and 11.4% RH. On request , t he probes

can be checked at different isot herm s.

For t h e Ca librat ion se que nce , se e par agr a ph ‘Ca libr at ion of t he com bined

hum idit y/ t e m peratu r e probe’ a t page 1 1 .

HD2301 - 10 - V1.7

PROBES AN D M EASUREM EN TS

The inst rum ent HD2 3 0 1 .0 works by using com bined hum idit y/ t em perat ur e probes

( tem perat ure with a Pt 100 sensor) and wit h t em perat ure only probes w it h 4 w ir e

Pt 100, or 2 or 4 wire Pt 1000.

The com bined hum idity/ t em perat ure probes are fit t ed w it h SI CRAM m odule t hat act s

as an interface between the sensor on t he probe and t he inst rum ent . There is a

m icroprocessor circuit wit h a perm anent m em or y inside t he m odule t hat enables t he

inst rum ent to recognize t he type of probe connected and t o read its calibrat ion

inform at ion.

The Delt a OHM Pt1000 probes ar e aut om at ically det ect ed while t he dir ect 4 wir e Pt 100

t em perat ure probe is not aut om at ically detect ed by t he inst rum ent and m ust be set

up in the Pr obe t y pe m enu it em ( please see the m enu descript ion on prev ious

chapt er) .

The probe is detect ed durin g turn on, and this cannot be perform e d w hen the

in st r um e nt is a lr e ady on, t h e refor e if a p rob e is connect ed and t he

instrum ent is on, it is necessary to turn it off and on.

MEASU REM EN T O F RELATI VE H UM I DI TY

The hum idit y probes are "hum idity and tem perat ure" com bined pr obes:

•t he hum idit y sensor is a capacit at iv e t ype sensor ;

•the t em perat ure sensor is a Pt 100.

The inst rum ent m easures relat ive hum idit y % RH and t em perat ur e, and st ar t ing fr om

t he fixed barom et ric pressure value of 1013.25 m bar it calculates t he following

result ing quant it ies:

1. g/ m 3gram s of vapour in a cubic m eter of dry air

2. hPa Part ial vapour pressure ( hPa)

3. Td Dew point ( ° C or ° F)

PERFORM I N G TH E M EASUREM EN T

To perform t he m easurem ent , proceed as follow s:

1. introduce the probe in the area of whose param eters you wish t o m easure.

Ca u t ion!Keep the probe far from elem ents that m ight interfere wit h m easurem ent

such as: heat or sources of cooling, walls, air-st ream s, et c

Avoid t em pe r a t ure drops that m igh t ca u se condensation.

2. a reading taken when no heat drop occurs is pract ically im m ediat e;

N OTE: in condit ions involv in g he a t drops, it is necessary t o wait until the probes and

their housing have reached a therm al equilibrium in order to prevent heat irradiat ion

or absorpt ion on t he relative hum idit y sensor which would cause a fau lt y

m easure m en t .

3. since tem perat ure affect s relat ive hum idit y; m ove the probe like a fan in order to

speed t he response t im e in t he presence of heat drops.

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