Electrical conductivity meter

Mita eletrik.

Mita EC eletrik (EC mita) na-atụle conductivity eletrik na ngwọta. Ọ nwere ọtụtụ ngwa na nyocha na injinia, yana ojiji a na-ejikarị eme ihe na hydroponics, aquaculture, aquaponics, na usoro Mmiri dị ọcha iji nyochaa ọnụọgụ nke ihe oriri, nnu ma ọ bụ adịghị ọcha na mmiri.

Ụkpụrụ

Mmetụta conductivity nke ụlọ nyocha na-eji usoro potentiometric na electrodes anọ. Ọtụtụ mgbe, electrodes bụ cylindrical ma hazie ya n'ụzọ concentric .  A na-ejikarị ọla platinum eme electrodes. A na-etinye ọkụ eletrik na-agbanwe agbanwe na mpụga abụọ nke electrodes. A na-atụle ikike dị n'etiti abụọ dị n'ime .  Enwere ike ikpebi conductivity site na iji anya dị n'etiti electrodes na mpaghara elu ha site na iji Iwu Ohm mana n'ozuzu, maka izi ezi, a na-eji electrolytes nke conductivity a ma ama.

Nnyocha conductivity nke ụlọ ọrụ na-ejikarị usoro inductive, nke nwere uru na mmiri ahụ anaghị eme ka akụkụ eletrik nke ihe mmetụta ahụ dị mmiri. N'ebe a, a na-eji coils abụọ jikọtara ọnụ. Otu bụ coil na-akwọ ụgbọala na-emepụta oghere magnet ma na-enye ya voltaji a maara nke ọma. Nke ọzọ na-emepụta coil nke abụọ nke transformer. Mmiri ahụ na-agafe n'otu ọwa dị na ihe mmetụta ahụ na-eme otu ntụgharị na ntụgharị nke abụọ nke transformer. Igwe eletrik a na-akpali bụ mmepụta nke ihe mmetụta ahụ.

Ụzọ ọzọ bụ iji ihe mmetụta eletrọniki anọ nke e ji ihe ndị na-eguzogide corrosion mee. Uru nke ihe mmetụta conductivity anọ na-eji ya tụnyere ihe mmetụta inductive bụ ịkwụ ụgwọ [nkọwa dị mkpa] na ikike ịlele obere (n'okpuru 100 μS / cm) conductivities (ihe dị mkpa karịsịa mgbe ị na-atụle ihe dị nso na-100% hydrofluoric acid). 

Ịdabere na okpomọkụ

Conductivity nke ngwọta na-adabere na okpomọkụ nke ukwuu, n'ihi ya, ọ dị mkpa ma ọ bụ iji ngwá ọrụ na-akwụ ụgwọ okpomọkụ, ma ọ bụ ịhazi ngwá ọrụ ahụ n'otu okpomọkụ ahụ a na-atụle. N'adịghị ka ọla, conductivity nke electrolytes nkịtị na-abawanye na okpomọkụ na-arịwanye elu.

N'ime oke okpomoku nwere oke, etu okpomọkụ si emetụta conductivity nke ihe ngwọta nwere ike ịdezi usoro n'usoro site na iji usoro a:

$\sigma _{T}={\sigma _{T_{cal}}[1+\alpha (T-T_{cal})]}$

ebe

T bụ okpomọkụ nke ihe nlele ahụ,

T_cal bụ okpomọkụ calibration,

σT bụ conductivity eletrik na okpomọkụ T,

σ_Tcal bụ conductivity eletrik na okpomọkụ calibration T_cal,

α bụ gradient nkwụghachi ụgwọ okpomọkụ nke ihe ngwọta ahụ.

Mgbanwe nkwụghachi ụgwọ okpomọkụ maka ọtụtụ ihe nlele mmiri na-apụta bụ ihe dịka 2% / ° C; Otú ọ dị, ọ nwere ike ịdị n'etiti 1 na 3% / ° C. A na-edepụta gradients nkwụghachi ụgwọ maka ụfọdụ ngwọta mmiri nkịtị na tebụl dị n'okpuru.

Mmiri na-agbapụta 25 °C	Ọnụ ọgụgụ (pasentị ịdị arọ)	α (%/°C)
HCl	10	1.56
KCl	10	1.88
H2SO<sub id="mwWQ">4</sub>	50	1.93
NaCl	10	2.14
HF	1.5	7.20
HNO<sub id="mwaQ">3</sub>	31	31

Ntinye aka na njikwa conductivity

Nleta arụmọrụ bụ ngwa ọrụ dị iche iche na njikwa usoro. Ntụle dị mfe na ngwa ngwa, na ọtụtụ sensọ dị elu chọrọ naanị obere mmezi. Enwere ike iji ọgụgụ conductivity a tụrụ atụ mee echiche dị iche iche na ihe na-eme na usoro a. N'ọnọdụ ụfọdụ ọ ga-ekwe omume ịmepụta ihe nlereanya iji gbakọọ ntinye nke mmiri mmiri.

Enwere ike ịgbakọ ntinye uche nke mmiri mmiri dị ọcha mgbe a na-atụle conductivity na okpomọkụ. Usoro agbagoro agbagoro maka acid na ntọala dị iche iche dị na azụmaahịa. Dịka ọmụmaatụ, mmadụ nwere ike ịlele nleba anya nke hydrofluoric acid dị ọcha site na iji ihe nleba anya dabere na conductivity [Zhejiang Quhua Fluorchemical, China Valmet Concentration 3300]. Uru nke nleba anya- na nha nha dabere na ọnọdụ okpomọkụ bụ ọsọ kachasị elu nke nha inline ma e jiri ya tụnyere onye nyocha ịntanetị.

Ntụle nke njikwa na-adabere na conductivity nwere njedebe. Ntinye aka na-adabere na njikwa nke ọtụtụ acid na bases abụghị ahịrị. Nlele nke dabeere na conductivity enweghị ike ikpebi n'akụkụ nke ọnụ ọnụ ahụ, ya mere, nha ahụ ga-ekwe omume naanị na akụkụ ahịrị nke curve.    Kraft pulp mills na-eji conductivity-based concentration measurement iji chịkwaa alkali mgbakwunye na ọkwa dị iche iche nke onye na-esi nri. Nlele conductivity agaghị ekpebi oke nke alkali, mana ọ bụ ezigbo ihe na-egosi na oke alkali dị irè (NaOH + Na2S dị ka NaOH ma ọ bụ Na2O) ma ọ bụ alkali na-arụ ọrụ (NaOH+ Na2S dịka NaOH maọ bụ Na2 O) na mmanya na-esi nri.  Ihe mejupụtara mmanya ahụ dịgasị iche n'etiti ọkwa dị iche iche nke onye na-esi nri. Ya mere, ọ dị mkpa ịmepụta otu usoro maka ebe ọ bụla a na-atụle ma ọ bụ iji ngwaahịa ndị dị na ahịa.

Nrụgide dị elu na ọnọdụ okpomọkụ nke usoro nri, jikọtara ya na ihe dị elu nke alkali components, na-etinye nrụgide siri ike na ihe mmetụta conductivity nke arụnyere na usoro. Ekwesịrị iburu n'uche ihe ncha na electrodes, ma ọ bụghị ya, nha conductivity na-ebugharị, na-achọ mmụba na mmezi..

Hụkwa

• Ihe na-eme ka mmadụ na-eduzi
• Salinometer
• Ngụkọta nke ihe ndị a gbazere agbaze
• Mita TDS

Njikọ mpụga

• ASTM D1125-23 Ụzọ Nnyocha Standard maka Conductivity Eletrik na Resistivity nke Mmiri
• ASTM D5682
• DIN 55667